diff --git a/libavcodec/alpha/simple_idct_alpha.c b/libavcodec/alpha/simple_idct_alpha.c
index 7c4a0d578e24bfdc65778853584a6fda381dd226..c1d47082a13edb060b7c9120c688170c9b2f69f0 100644
--- a/libavcodec/alpha/simple_idct_alpha.c
+++ b/libavcodec/alpha/simple_idct_alpha.c
@@ -3,6 +3,12 @@
  *
  * Copyright (c) 2001 Michael Niedermayer <michaelni@gmx.at>
  *
+ * based upon some outcommented C code from mpeg2dec (idct_mmx.c
+ * written by Aaron Holtzman <aholtzma@ess.engr.uvic.ca>)
+ *
+ * Alpha optimizations by Måns Rullgård <mru@users.sourceforge.net>
+ *                     and Falk Hueffner <falk@debian.org>
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -18,12 +24,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * based upon some outcommented c code from mpeg2dec (idct_mmx.c
- * written by Aaron Holtzman <aholtzma@ess.engr.uvic.ca>)
- *
- * Alpha optimiziations by Måns Rullgård <mru@users.sourceforge.net>
- *                     and Falk Hueffner <falk@debian.org>
  */
 
 #include "asm.h"
diff --git a/libavcodec/armv4l/simple_idct_arm.S b/libavcodec/armv4l/simple_idct_arm.S
index b5a20f6da0ab12211df4c0347cbc875ac737c9d5..40b017ff0b05330ce21dc25e4ab89c80e764ebf4 100644
--- a/libavcodec/armv4l/simple_idct_arm.S
+++ b/libavcodec/armv4l/simple_idct_arm.S
@@ -5,6 +5,9 @@
  *
  * Author: Frederic Boulay <dilb@handhelds.org>
  *
+ * The function defined in this file is derived from the simple_idct function
+ * from the libavcodec library part of the FFmpeg project.
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -20,9 +23,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * The function defined in this file, is derived from the simple_idct function
- * from the libavcodec library part of the ffmpeg project.
  */
 
 /* useful constants for the algorithm, they are save in __constant_ptr__ at */
diff --git a/libavcodec/bitstream.c b/libavcodec/bitstream.c
index 271a393b22eb120db02e463e14d78edf9fd82794..8e5d15acebf0eb707195a6a511926f5d03ae20a0 100644
--- a/libavcodec/bitstream.c
+++ b/libavcodec/bitstream.c
@@ -3,6 +3,8 @@
  * Copyright (c) 2000, 2001 Fabrice Bellard.
  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
  *
+ * alternative bitstream reader & writer by Michael Niedermayer <michaelni@gmx.at>
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -18,8 +20,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * alternative bitstream reader & writer by Michael Niedermayer <michaelni@gmx.at>
  */
 
 /**
diff --git a/libavcodec/cyuv.c b/libavcodec/cyuv.c
index b607da0a2953a18188802294c5518ae07093026e..a1a750902e5b3de44d8ab1d21d36b05c01428cfe 100644
--- a/libavcodec/cyuv.c
+++ b/libavcodec/cyuv.c
@@ -1,4 +1,8 @@
 /*
+ * Creative YUV (CYUV) Video Decoder
+ *   by Mike Melanson (melanson@pcisys.net)
+ * based on "Creative YUV (CYUV) stream format for AVI":
+ *   http://www.csse.monash.edu.au/~timf/videocodec/cyuv.txt
  *
  * Copyright (C) 2003 the ffmpeg project
  *
@@ -17,12 +21,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Creative YUV (CYUV) Video Decoder
- *   by Mike Melanson (melanson@pcisys.net)
- * based on "Creative YUV (CYUV) stream format for AVI":
- *   http://www.csse.monash.edu.au/~timf/videocodec/cyuv.txt
- *
  */
 
 /**
diff --git a/libavcodec/dsputil.c b/libavcodec/dsputil.c
index 838edd07f015209a7722238183ed8b23d1b953c7..cf089572033b226729a0d8bc1a11058f90a07f44 100644
--- a/libavcodec/dsputil.c
+++ b/libavcodec/dsputil.c
@@ -3,6 +3,8 @@
  * Copyright (c) 2000, 2001 Fabrice Bellard.
  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
  *
+ * gmc & q-pel & 32/64 bit based MC by Michael Niedermayer <michaelni@gmx.at>
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -18,8 +20,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * gmc & q-pel & 32/64 bit based MC by Michael Niedermayer <michaelni@gmx.at>
  */
 
 /**
diff --git a/libavcodec/faandct.c b/libavcodec/faandct.c
index 6f73ee5e974dbb8fd6a4c59d20fb71e60305852a..772c8f2ca73341bd62a1de831fcdcd5e32fbfb99 100644
--- a/libavcodec/faandct.c
+++ b/libavcodec/faandct.c
@@ -2,6 +2,8 @@
  * Floating point AAN DCT
  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
  *
+ * this implementation is based upon the IJG integer AAN DCT (see jfdctfst.c)
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -17,8 +19,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * this implementation is based upon the IJG integer AAN DCT (see jfdctfst.c)
  */
 
 /**
diff --git a/libavcodec/h263.c b/libavcodec/h263.c
index 18b385690959423456164901492a43277d93e329..7a57ae964526a7d2df72d48e2cb100f3897ffd3f 100644
--- a/libavcodec/h263.c
+++ b/libavcodec/h263.c
@@ -5,6 +5,10 @@
  * Copyright (c) 2001 Juan J. Sierralta P.
  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
  *
+ * ac prediction encoding, B-frame support, error resilience, optimizations,
+ * qpel decoding, gmc decoding, interlaced decoding
+ * by Michael Niedermayer <michaelni@gmx.at>
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -20,10 +24,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * ac prediction encoding, b-frame support, error resilience, optimizations,
- * qpel decoding, gmc decoding, interlaced decoding,
- * by Michael Niedermayer <michaelni@gmx.at>
  */
 
 /**
diff --git a/libavcodec/huffyuv.c b/libavcodec/huffyuv.c
index ac91db213dc67b3c22f1d2bb4ad7b5d7cc81d06d..d48c1e1df29513b4cbc0142f2b0fd06ba5f9c636 100644
--- a/libavcodec/huffyuv.c
+++ b/libavcodec/huffyuv.c
@@ -3,6 +3,9 @@
  *
  * Copyright (c) 2002-2003 Michael Niedermayer <michaelni@gmx.at>
  *
+ * see http://www.pcisys.net/~melanson/codecs/huffyuv.txt for a description of
+ * the algorithm used
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -18,9 +21,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * see http://www.pcisys.net/~melanson/codecs/huffyuv.txt for a description of
- * the algorithm used
  */
 
 /**
diff --git a/libavcodec/i386/dsputil_mmx_avg.h b/libavcodec/i386/dsputil_mmx_avg.h
index ec5d2b5906469c2061989db593129704378ae997..d37d3006464420d85e6c1a45b4054f87ad3e0b7a 100644
--- a/libavcodec/i386/dsputil_mmx_avg.h
+++ b/libavcodec/i386/dsputil_mmx_avg.h
@@ -3,6 +3,10 @@
  * Copyright (c) 2000, 2001 Fabrice Bellard.
  * Copyright (c) 2002-2004 Michael Niedermayer
  *
+ * MMX optimization by Nick Kurshev <nickols_k@mail.ru>
+ * mostly rewritten by Michael Niedermayer <michaelni@gmx.at>
+ * and improved by Zdenek Kabelac <kabi@users.sf.net>
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -18,10 +22,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * MMX optimization by Nick Kurshev <nickols_k@mail.ru>
- * mostly rewritten by Michael Niedermayer <michaelni@gmx.at>
- * and improved by Zdenek Kabelac <kabi@users.sf.net>
  */
 
 /* XXX: we use explicit registers to avoid a gcc 2.95.2 register asm
diff --git a/libavcodec/i386/dsputil_mmx_qns.h b/libavcodec/i386/dsputil_mmx_qns.h
index d0030d80360e0d9c67d4e64e848bbd4412e78e64..06bcb6d7ba467f975e861e8413dcc43d395405ba 100644
--- a/libavcodec/i386/dsputil_mmx_qns.h
+++ b/libavcodec/i386/dsputil_mmx_qns.h
@@ -2,6 +2,9 @@
  * DSP utils : QNS functions are compiled 3 times for mmx/3dnow/ssse3
  * Copyright (c) 2004 Michael Niedermayer
  *
+ * MMX optimization by Michael Niedermayer <michaelni@gmx.at>
+ * 3DNow! and SSSE3 optimization by Zuxy Meng <zuxy.meng@gmail.com>
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -17,9 +20,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * MMX optimization by Michael Niedermayer <michaelni@gmx.at>
- * 3DNow! and SSSE3 optimization by Zuxy Meng <zuxy.meng@gmail.com>
  */
 
 #define MAX_ABS (512 >> (SCALE_OFFSET>0 ? SCALE_OFFSET : 0))
diff --git a/libavcodec/i386/dsputil_mmx_rnd.h b/libavcodec/i386/dsputil_mmx_rnd.h
index d706bef1861239cd1333688bd4ebbc13e3954905..601800a9e09b8e00fd81483db55e14d98fdd97a2 100644
--- a/libavcodec/i386/dsputil_mmx_rnd.h
+++ b/libavcodec/i386/dsputil_mmx_rnd.h
@@ -3,6 +3,10 @@
  * Copyright (c) 2000, 2001 Fabrice Bellard.
  * Copyright (c) 2003-2004 Michael Niedermayer <michaelni@gmx.at>
  *
+ * MMX optimization by Nick Kurshev <nickols_k@mail.ru>
+ * mostly rewritten by Michael Niedermayer <michaelni@gmx.at>
+ * and improved by Zdenek Kabelac <kabi@users.sf.net>
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -18,10 +22,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * MMX optimization by Nick Kurshev <nickols_k@mail.ru>
- * mostly rewritten by Michael Niedermayer <michaelni@gmx.at>
- * and improved by Zdenek Kabelac <kabi@users.sf.net>
  */
 
 // put_pixels
diff --git a/libavcodec/i386/idct_mmx_xvid.c b/libavcodec/i386/idct_mmx_xvid.c
index 1e7ea3e7faeceef627a6265315a80eee22706c10..179defdd1a6156f62c2b1436e3916fa3fc2ede2c 100644
--- a/libavcodec/i386/idct_mmx_xvid.c
+++ b/libavcodec/i386/idct_mmx_xvid.c
@@ -1,53 +1,43 @@
-///****************************************************************************
-// *
-// *  XVID MPEG-4 VIDEO CODEC
-// *  - MMX and XMM forward discrete cosine transform -
-// *
-// *  Copyright(C) 2001 Peter Ross <pross@xvid.org>
-// *
-// * This file is part of FFmpeg.
-// *
-// * FFmpeg is free software; you can redistribute it and/or
-// * modify it under the terms of the GNU Lesser General Public
-// * License as published by the Free Software Foundation; either
-// * version 2.1 of the License, or (at your option) any later version.
-// *
-// * FFmpeg is distributed in the hope that it will be useful,
-// * but WITHOUT ANY WARRANTY; without even the implied warranty of
-// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// * Lesser General Public License for more details.
-// *
-// * You should have received a copy of the GNU Lesser General Public License
-// * along with FFmpeg; if not, write to the Free Software Foundation,
-// * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
-// *
-// * $Id$
-// *
-// ***************************************************************************/
-
-// ****************************************************************************
-//
-// Originally provided by Intel at AP-922
-// http://developer.intel.com/vtune/cbts/strmsimd/922down.htm
-// (See more app notes at http://developer.intel.com/vtune/cbts/strmsimd/appnotes.htm)
-// but in a limited edition.
-// New macro implements a column part for precise iDCT
-// The routine precision now satisfies IEEE standard 1180-1990.
-//
-// Copyright(C) 2000-2001 Peter Gubanov <peter@elecard.net.ru>
-// Rounding trick Copyright(C) 2000 Michel Lespinasse <walken@zoy.org>
-//
-// http://www.elecard.com/peter/idct.html
-// http://www.linuxvideo.org/mpeg2dec/
-//
-// ***************************************************************************/
-//
-// These examples contain code fragments for first stage iDCT 8x8
-// (for rows) and first stage DCT 8x8 (for columns)
-//
-
-// conversion to gcc syntax by michael niedermayer
-
+/*
+ * XVID MPEG-4 VIDEO CODEC
+ * - MMX and XMM forward discrete cosine transform -
+ *
+ * Copyright(C) 2001 Peter Ross <pross@xvid.org>
+ *
+ * Originally provided by Intel at AP-922
+ * http://developer.intel.com/vtune/cbts/strmsimd/922down.htm
+ * (See more app notes at http://developer.intel.com/vtune/cbts/strmsimd/appnotes.htm)
+ * but in a limited edition.
+ * New macro implements a column part for precise iDCT
+ * The routine precision now satisfies IEEE standard 1180-1990.
+ *
+ * Copyright(C) 2000-2001 Peter Gubanov <peter@elecard.net.ru>
+ * Rounding trick Copyright(C) 2000 Michel Lespinasse <walken@zoy.org>
+ *
+ * http://www.elecard.com/peter/idct.html
+ * http://www.linuxvideo.org/mpeg2dec/
+ *
+ * These examples contain code fragments for first stage iDCT 8x8
+ * (for rows) and first stage DCT 8x8 (for columns)
+ *
+ * conversion to gcc syntax by Michael Niedermayer
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpeg; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
 
 #include <inttypes.h>
 #include "avcodec.h"
diff --git a/libavcodec/i386/motion_est_mmx.c b/libavcodec/i386/motion_est_mmx.c
index e43cacdcc2f44abeefd29ff393241aa73227e976..3c2239387124955db624782672380e700461aa07 100644
--- a/libavcodec/i386/motion_est_mmx.c
+++ b/libavcodec/i386/motion_est_mmx.c
@@ -3,6 +3,8 @@
  * Copyright (c) 2001 Fabrice Bellard.
  * Copyright (c) 2002-2004 Michael Niedermayer
  *
+ * mostly by Michael Niedermayer <michaelni@gmx.at>
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -18,8 +20,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * mostly by Michael Niedermayer <michaelni@gmx.at>
  */
 #include "dsputil.h"
 #include "x86_cpu.h"
diff --git a/libavcodec/i386/mpegvideo_mmx.c b/libavcodec/i386/mpegvideo_mmx.c
index 112c57cb6afce96064e3efa2787016e382b3a30e..8b7e62c673cfeaaa08c26e6a95279d4d70b5e785 100644
--- a/libavcodec/i386/mpegvideo_mmx.c
+++ b/libavcodec/i386/mpegvideo_mmx.c
@@ -2,6 +2,9 @@
  * The simplest mpeg encoder (well, it was the simplest!)
  * Copyright (c) 2000,2001 Fabrice Bellard.
  *
+ * Optimized for ia32 CPUs by Nick Kurshev <nickols_k@mail.ru>
+ * h263, mpeg1, mpeg2 dequantizer & draw_edges by Michael Niedermayer <michaelni@gmx.at>
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -17,9 +20,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Optimized for ia32 cpus by Nick Kurshev <nickols_k@mail.ru>
- * h263, mpeg1, mpeg2 dequantizer & draw_edges by Michael Niedermayer <michaelni@gmx.at>
  */
 
 #include "dsputil.h"
diff --git a/libavcodec/ljpegenc.c b/libavcodec/ljpegenc.c
index 7c9cde80bb8db1733a61317c96017c8a43358113..0e717397bf38879fde4450aaddfe0ddf93c88c02 100644
--- a/libavcodec/ljpegenc.c
+++ b/libavcodec/ljpegenc.c
@@ -4,6 +4,10 @@
  * Copyright (c) 2003 Alex Beregszaszi
  * Copyright (c) 2003-2004 Michael Niedermayer
  *
+ * Support for external huffman table, various fixes (AVID workaround),
+ * aspecting, new decode_frame mechanism and apple mjpeg-b support
+ *                                  by Alex Beregszaszi
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -19,10 +23,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Support for external huffman table, various fixes (AVID workaround),
- * aspecting, new decode_frame mechanism and apple mjpeg-b support
- *                                  by Alex Beregszaszi
  */
 
 /**
diff --git a/libavcodec/mdec.c b/libavcodec/mdec.c
index 1f63bbd7b7c2e0604c4637cd44053a6ae93e501f..318b3b927bc8984a3de625c177059214e532f9c5 100644
--- a/libavcodec/mdec.c
+++ b/libavcodec/mdec.c
@@ -2,6 +2,8 @@
  * PSX MDEC codec
  * Copyright (c) 2003 Michael Niedermayer
  *
+ * based upon code from Sebastian Jedruszkiewicz <elf@frogger.rules.pl>
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -17,8 +19,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * based upon code from Sebastian Jedruszkiewicz <elf@frogger.rules.pl>
  */
 
 /**
diff --git a/libavcodec/mjpeg.c b/libavcodec/mjpeg.c
index 4be987b2cf338c98f153ff700afc5a7d8d4e9e70..08ffb95a7c5fef6ea29ebe93990d590233d68429 100644
--- a/libavcodec/mjpeg.c
+++ b/libavcodec/mjpeg.c
@@ -4,6 +4,10 @@
  * Copyright (c) 2003 Alex Beregszaszi
  * Copyright (c) 2003-2004 Michael Niedermayer
  *
+ * Support for external huffman table, various fixes (AVID workaround),
+ * aspecting, new decode_frame mechanism and apple mjpeg-b support
+ *                                  by Alex Beregszaszi
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -19,10 +23,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Support for external huffman table, various fixes (AVID workaround),
- * aspecting, new decode_frame mechanism and apple mjpeg-b support
- *                                  by Alex Beregszaszi
  */
 
 /**
diff --git a/libavcodec/mjpeg.h b/libavcodec/mjpeg.h
index ec14dd459826a73ae56eb85bde9d48629e258a37..e63b314dea36574cb98d4763b223e3bc966a9646 100644
--- a/libavcodec/mjpeg.h
+++ b/libavcodec/mjpeg.h
@@ -4,6 +4,10 @@
  * Copyright (c) 2003 Alex Beregszaszi
  * Copyright (c) 2003-2004 Michael Niedermayer
  *
+ * Support for external huffman table, various fixes (AVID workaround),
+ * aspecting, new decode_frame mechanism and apple mjpeg-b support
+ *                                  by Alex Beregszaszi
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -19,10 +23,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Support for external huffman table, various fixes (AVID workaround),
- * aspecting, new decode_frame mechanism and apple mjpeg-b support
- *                                  by Alex Beregszaszi
  */
 
 /**
diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c
index 81e3cb44c054165848ae7517510e0d0de8735c15..f70d9b262d0d4f27dd25584b3de7a4b7c5c00109 100644
--- a/libavcodec/mjpegdec.c
+++ b/libavcodec/mjpegdec.c
@@ -4,6 +4,10 @@
  * Copyright (c) 2003 Alex Beregszaszi
  * Copyright (c) 2003-2004 Michael Niedermayer
  *
+ * Support for external huffman table, various fixes (AVID workaround),
+ * aspecting, new decode_frame mechanism and apple mjpeg-b support
+ *                                  by Alex Beregszaszi
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -19,10 +23,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Support for external huffman table, various fixes (AVID workaround),
- * aspecting, new decode_frame mechanism and apple mjpeg-b support
- *                                  by Alex Beregszaszi
  */
 
 /**
diff --git a/libavcodec/mjpegenc.c b/libavcodec/mjpegenc.c
index bf780436f1584f14ec09b698d1eb2e063e0612ee..b5e5a827d3ab7757f00a8572a84bd1fcc64d4966 100644
--- a/libavcodec/mjpegenc.c
+++ b/libavcodec/mjpegenc.c
@@ -4,6 +4,10 @@
  * Copyright (c) 2003 Alex Beregszaszi
  * Copyright (c) 2003-2004 Michael Niedermayer
  *
+ * Support for external huffman table, various fixes (AVID workaround),
+ * aspecting, new decode_frame mechanism and apple mjpeg-b support
+ *                                  by Alex Beregszaszi
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -19,10 +23,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Support for external huffman table, various fixes (AVID workaround),
- * aspecting, new decode_frame mechanism and apple mjpeg-b support
- *                                  by Alex Beregszaszi
  */
 
 /**
diff --git a/libavcodec/mjpegenc.h b/libavcodec/mjpegenc.h
index a313eac90777f8379cc2bd5161f2ccd94afb34d3..d6f1ec9d24bbcb2385eee26584f0fb96b0a2072d 100644
--- a/libavcodec/mjpegenc.h
+++ b/libavcodec/mjpegenc.h
@@ -4,6 +4,10 @@
  * Copyright (c) 2003 Alex Beregszaszi
  * Copyright (c) 2003-2004 Michael Niedermayer
  *
+ * Support for external huffman table, various fixes (AVID workaround),
+ * aspecting, new decode_frame mechanism and apple mjpeg-b support
+ *                                  by Alex Beregszaszi
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -19,10 +23,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Support for external huffman table, various fixes (AVID workaround),
- * aspecting, new decode_frame mechanism and apple mjpeg-b support
- *                                  by Alex Beregszaszi
  */
 
 /**
diff --git a/libavcodec/motion_est.c b/libavcodec/motion_est.c
index 014e3c5f4487e422d0c5418499948f61ecd64494..16db0f87c9e75511225636b3db4a229dbc8b850e 100644
--- a/libavcodec/motion_est.c
+++ b/libavcodec/motion_est.c
@@ -3,6 +3,7 @@
  * Copyright (c) 2000,2001 Fabrice Bellard.
  * Copyright (c) 2002-2004 Michael Niedermayer
  *
+ * new motion estimation (X1/EPZS) by Michael Niedermayer <michaelni@gmx.at>
  *
  * This file is part of FFmpeg.
  *
@@ -19,8 +20,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * new Motion Estimation (X1/EPZS) by Michael Niedermayer <michaelni@gmx.at>
  */
 
 /**
diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c
index db11d96afcf341502f3b47d8b5daa1038ed010e1..68ee6125d1a4c2e822767f3898c4ffc2caec9773 100644
--- a/libavcodec/mpegvideo.c
+++ b/libavcodec/mpegvideo.c
@@ -3,6 +3,8 @@
  * Copyright (c) 2000,2001 Fabrice Bellard.
  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
  *
+ * 4MV & hq & B-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -18,8 +20,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * 4MV & hq & b-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
  */
 
 /**
diff --git a/libavcodec/mpegvideo_common.h b/libavcodec/mpegvideo_common.h
index 7fc1ee52b786a3ca9bfc37297abc93f6c272448e..5ba4ad1c8d2776d2d6469732126e3a34a6d79911 100644
--- a/libavcodec/mpegvideo_common.h
+++ b/libavcodec/mpegvideo_common.h
@@ -3,6 +3,8 @@
  * Copyright (c) 2000,2001 Fabrice Bellard.
  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
  *
+ * 4MV & hq & B-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -18,8 +20,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * 4MV & hq & b-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
  */
 
 /**
diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c
index 204a51cbbbfb1532b6181a94188d1d49198f84b0..2ac8a6fc68f543468103ced2cd2c99ed9c30ab9c 100644
--- a/libavcodec/mpegvideo_enc.c
+++ b/libavcodec/mpegvideo_enc.c
@@ -3,6 +3,8 @@
  * Copyright (c) 2000,2001 Fabrice Bellard.
  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
  *
+ * 4MV & hq & B-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -18,8 +20,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * 4MV & hq & b-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
  */
 
 /**
diff --git a/libavcodec/msmpeg4.c b/libavcodec/msmpeg4.c
index ba58798e7da0edc2e5bbf444d06f8bf39e6dbb0d..fec804b029bbae80ed92f8ed8592ef85ccc25b6b 100644
--- a/libavcodec/msmpeg4.c
+++ b/libavcodec/msmpeg4.c
@@ -3,6 +3,8 @@
  * Copyright (c) 2001 Fabrice Bellard.
  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
  *
+ * msmpeg4v1 & v2 stuff by Michael Niedermayer <michaelni@gmx.at>
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -18,8 +20,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * msmpeg4v1 & v2 stuff by Michael Niedermayer <michaelni@gmx.at>
  */
 
 /**
diff --git a/libavcodec/msmpeg4data.c b/libavcodec/msmpeg4data.c
index a2cb7f64f88d0cefa8c05a257c590371e76d7cb0..90a8ade83b9ae62e192543b53a0fc752bdce1274 100644
--- a/libavcodec/msmpeg4data.c
+++ b/libavcodec/msmpeg4data.c
@@ -3,6 +3,8 @@
  * copyright (c) 2001 Fabrice Bellard
  * copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
  *
+ * msmpeg4v1 & v2 stuff by Michael Niedermayer <michaelni@gmx.at>
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -18,8 +20,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * msmpeg4v1 & v2 stuff by Michael Niedermayer <michaelni@gmx.at>
  */
 
 /**
diff --git a/libavcodec/msmpeg4data.h b/libavcodec/msmpeg4data.h
index c32fc5dd469f5720e651cfad23b2977a3f542293..24cb47dff5875db968efd91b69d655c39aec4c9b 100644
--- a/libavcodec/msmpeg4data.h
+++ b/libavcodec/msmpeg4data.h
@@ -3,6 +3,8 @@
  * copyright (c) 2001 Fabrice Bellard
  * copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
  *
+ * msmpeg4v1 & v2 stuff by Michael Niedermayer <michaelni@gmx.at>
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -18,8 +20,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * msmpeg4v1 & v2 stuff by Michael Niedermayer <michaelni@gmx.at>
  */
 
 /**
diff --git a/libavcodec/msmpeg4tab.h b/libavcodec/msmpeg4tab.h
index 6a1c3c38cd31defe472fa6d297d60f926fa1eb22..19d4753ee49a36d2593ee52d40cc20a7f080fbc7 100644
--- a/libavcodec/msmpeg4tab.h
+++ b/libavcodec/msmpeg4tab.h
@@ -3,6 +3,8 @@
  * copyright (c) 2001 Fabrice Bellard
  * copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
  *
+ * msmpeg4v1 & v2 stuff by Michael Niedermayer <michaelni@gmx.at>
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -18,8 +20,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * msmpeg4v1 & v2 stuff by Michael Niedermayer <michaelni@gmx.at>
  */
 
 /**
diff --git a/libavcodec/ps2/dsputil_mmi.c b/libavcodec/ps2/dsputil_mmi.c
index 22ee5cea86a088792fd469dc5524cdfc085ce054..6a0582fe4469b0359cf90702f8d8683187ddd3b3 100644
--- a/libavcodec/ps2/dsputil_mmi.c
+++ b/libavcodec/ps2/dsputil_mmi.c
@@ -2,6 +2,9 @@
  * MMI optimized DSP utils
  * Copyright (c) 2000, 2001 Fabrice Bellard.
  *
+ * MMI optimization by Leon van Stuivenberg
+ * clear_blocks_mmi() by BroadQ
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -17,9 +20,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * MMI optimization by Leon van Stuivenberg
- * clear_blocks_mmi() by BroadQ
  */
 
 #include "dsputil.h"
diff --git a/libavcodec/ps2/mpegvideo_mmi.c b/libavcodec/ps2/mpegvideo_mmi.c
index dff8be7fd0079da5424b00caf62293ff0a322984..7f62e6e6d2382cef18026c1728ade63729ed7fb4 100644
--- a/libavcodec/ps2/mpegvideo_mmi.c
+++ b/libavcodec/ps2/mpegvideo_mmi.c
@@ -1,6 +1,8 @@
 /*
  * Copyright (c) 2000,2001 Fabrice Bellard.
  *
+ * MMI optimization by Leon van Stuivenberg
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -16,8 +18,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * MMI optimization by Leon van Stuivenberg
  */
 
 #include "dsputil.h"
diff --git a/libavcodec/s3tc.c b/libavcodec/s3tc.c
index 544ee42b2555a1bfc968cda962a5dc0e8b26c433..bc8e3d26568261086f1b47912d5347fafef5bb76 100644
--- a/libavcodec/s3tc.c
+++ b/libavcodec/s3tc.c
@@ -2,6 +2,8 @@
  * S3 Texture Compression (S3TC) decoding functions
  * Copyright (c) 2007 by Ivo van Poorten
  *
+ * see also: http://wiki.multimedia.cx/index.php?title=S3TC
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -17,8 +19,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * See also: http://wiki.multimedia.cx/index.php?title=S3TC
  */
 
 #include "avcodec.h"
diff --git a/libavcodec/svq1.c b/libavcodec/svq1.c
index 3414264105d4c00f2d6792ea8cfa326699f4854a..7d709f38018879acee37f928c2aec3565f907744 100644
--- a/libavcodec/svq1.c
+++ b/libavcodec/svq1.c
@@ -1,8 +1,13 @@
 /*
+ * SVQ1 decoder
+ * ported to MPlayer by Arpi <arpi@thot.banki.hu>
+ * ported to libavcodec by Nick Kurshev <nickols_k@mail.ru>
  *
  * Copyright (C) 2002 the xine project
  * Copyright (C) 2002 the ffmpeg project
  *
+ * SVQ1 Encoder (c) 2004 Mike Melanson <melanson@pcisys.net>
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -18,12 +23,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * (SVQ1 Decoder)
- * Ported to mplayer by Arpi <arpi@thot.banki.hu>
- * Ported to libavcodec by Nick Kurshev <nickols_k@mail.ru>
- *
- * SVQ1 Encoder (c) 2004 Mike Melanson <melanson@pcisys.net>
  */
 
 /**
diff --git a/libavcodec/svq1_cb.h b/libavcodec/svq1_cb.h
index a0e74952d9996f9b99b7c30245c10b35810cd1d5..bd2f98d10fdfcf2a19625e7174558678aec1f5ce 100644
--- a/libavcodec/svq1_cb.h
+++ b/libavcodec/svq1_cb.h
@@ -1,4 +1,7 @@
 /*
+ * SVQ1 decoder
+ * ported to MPlayer by Arpi <arpi@thot.banki.hu>
+ * ported to libavcodec by Nick Kurshev <nickols_k@mail.ru>
  *
  * Copyright (C) 2002 the xine project
  * Copyright (C) 2002 the ffmpeg project
@@ -18,10 +21,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Ported to mplayer by Arpi <arpi@thot.banki.hu>
- * Ported to libavcodec by Nick Kurshev <nickols_k@mail.ru>
- *
  */
 
 /**
diff --git a/libavcodec/txd.c b/libavcodec/txd.c
index 454e412955aede1e1fab22bbb7103b8f0d3ca5eb..9c60b4c03fece850fcd113b35644a1e93833050a 100644
--- a/libavcodec/txd.c
+++ b/libavcodec/txd.c
@@ -2,6 +2,8 @@
  * Renderware TeXture Dictionary (.txd) image decoder
  * Copyright (c) 2007 Ivo van Poorten
  *
+ * See also: http://wiki.multimedia.cx/index.php?title=TXD
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -17,8 +19,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * See also: http://wiki.multimedia.cx/index.php?title=TXD
  */
 
 #include "avcodec.h"
diff --git a/libavcodec/vp6.c b/libavcodec/vp6.c
index 065b9ff305231946178833a602970d0aa701ec6b..cfa7589d355f1b6fb6ed53c6f21717a4a7d3a210 100644
--- a/libavcodec/vp6.c
+++ b/libavcodec/vp6.c
@@ -4,6 +4,10 @@
  *
  * Copyright (C) 2006  Aurelien Jacobs <aurel@gnuage.org>
  *
+ * The VP6F decoder accepts an optional 1 byte extradata. It is composed of:
+ *  - upper 4bits: difference between encoded width and visible width
+ *  - lower 4bits: difference between encoded height and visible height
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -18,12 +22,7 @@
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- *
- *
- * The VP6F decoder accept an optional 1 byte extradata. It is composed of:
- *  - upper 4bits: difference between encoded width and visible width
- *  - lower 4bits: difference between encoded height and visible height
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #include <stdlib.h>
diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c
index 1f8035d8592a81b9ef3a2bfb6a79888e66ee1f7d..676bb27169b0593eec9a934523ff06659da40fce 100644
--- a/libavformat/flvdec.c
+++ b/libavformat/flvdec.c
@@ -2,6 +2,11 @@
  * FLV demuxer
  * Copyright (c) 2003 The FFmpeg Project.
  *
+ * This demuxer will generate a 1 byte extradata for VP6F content.
+ * It is composed of:
+ *  - upper 4bits: difference between encoded width and visible width
+ *  - lower 4bits: difference between encoded height and visible height
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -17,12 +22,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- *
- * This demuxer will generate a 1 byte extradata for VP6F content.
- * It is composed of:
- *  - upper 4bits: difference between encoded width and visible width
- *  - lower 4bits: difference between encoded height and visible height
  */
 #include "avformat.h"
 #include "flv.h"
diff --git a/libavutil/md5.c b/libavutil/md5.c
index 96c3d25707750dbaeea679d48d41b9425863929f..6c23ed642f57ef554287112375af17580d371dc7 100644
--- a/libavutil/md5.c
+++ b/libavutil/md5.c
@@ -2,6 +2,17 @@
  * Copyright (C) 2006 Michael Niedermayer (michaelni@gmx.at)
  * Copyright (C) 2003-2005 by Christopher R. Hertel (crh@ubiqx.mn.org)
  *
+ * References:
+ *  IETF RFC 1321: The MD5 Message-Digest Algorithm
+ *       Ron Rivest. IETF, April, 1992
+ *
+ * based on http://ubiqx.org/libcifs/source/Auth/MD5.c
+ *          from Christopher R. Hertel (crh@ubiqx.mn.org)
+ * Simplified, cleaned and IMO redundant comments removed by michael.
+ *
+ * If you use gcc, then version 4.1 or later and -fomit-frame-pointer is
+ * strongly recommended.
+ *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
@@ -17,17 +28,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * References:
- *  IETF RFC 1321: The MD5 Message-Digest Algorithm
- *       Ron Rivest. IETF, April, 1992
- *
- * based on http://ubiqx.org/libcifs/source/Auth/MD5.c
- *          from Christopher R. Hertel (crh@ubiqx.mn.org)
- * simplified, cleaned and IMO redundant comments removed by michael
- *
- * if you use gcc, then version 4.1 or later and -fomit-frame-pointer is
- * strongly recommended
  */
 
 #include "common.h"