diff --git a/libav/asf.c b/libav/asf.c
index 23a2cb3471bff81b1e7edc32b2e1edfb37b1f9f4..74ab4596880adccaa6f12522d8079dc513f0d202 100644
--- a/libav/asf.c
+++ b/libav/asf.c
@@ -124,8 +124,8 @@ static const GUID my_guid = {
 };
 
 CodecTag codec_asf_bmp_tags[] = {
-    { CODEC_ID_H263, MKTAG('U', '2', '6', '3') },
-    { CODEC_ID_H263P, MKTAG('U', '2', '6', '3') },
+    { CODEC_ID_H263, MKTAG('H', '2', '6', '3') },
+    { CODEC_ID_H263P, MKTAG('H', '2', '6', '3') },
     { CODEC_ID_H263I, MKTAG('I', '2', '6', '3') }, /* intel h263 */
     { CODEC_ID_MJPEG, MKTAG('M', 'J', 'P', 'G') },
     { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') },
diff --git a/libav/avienc.c b/libav/avienc.c
index 52fdea237e6500490521e37266eee2675c9757ac..43482d0914fcfe8f23c495b0cd3426635799207f 100644
--- a/libav/avienc.c
+++ b/libav/avienc.c
@@ -56,8 +56,8 @@ void end_tag(ByteIOContext *pb, offset_t start)
 /* Note: when encoding, the first matching tag is used, so order is
    important if multiple tags possible for a given codec. */
 CodecTag codec_bmp_tags[] = {
-    { CODEC_ID_H263, MKTAG('U', '2', '6', '3') },
-    { CODEC_ID_H263P, MKTAG('U', '2', '6', '3') },
+    { CODEC_ID_H263, MKTAG('H', '2', '6', '3') },
+    { CODEC_ID_H263P, MKTAG('H', '2', '6', '3') },
     { CODEC_ID_H263I, MKTAG('I', '2', '6', '3') }, /* intel h263 */
     { CODEC_ID_MJPEG, MKTAG('M', 'J', 'P', 'G') },
     { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') },
diff --git a/libav/grab.c b/libav/grab.c
index 992236ab03598cc22b04eacd0ba78128a8cc8040..9c299daf83729e78a8b8ed74c2fdd5ae0510ac04 100644
--- a/libav/grab.c
+++ b/libav/grab.c
@@ -238,8 +238,9 @@ static int grab_read_header(AVFormatContext *s1, AVFormatParameters *ap)
 static int v4l_mm_read_picture(VideoData *s, UINT8 *buf)
 {
     UINT8 *ptr;
-    struct timeval tv_s, tv_e;
-    int delay;
+    struct timeval tv_s;
+    //struct timeval tv_e;
+    //int delay;
 
     /* Setup to capture the next frame */
     gb_buf.frame = (gb_frame + 1) % gb_buffers.frames;