From 5fe03e3837516732df41c339ebe471a86b6e8bd5 Mon Sep 17 00:00:00 2001
From: Roman Shaposhnik <roman@shaposhnik.org>
Date: Tue, 29 Apr 2003 19:46:08 +0000
Subject: [PATCH] * making it possible to override aspect ratio from the
command line
Originally committed as revision 1828 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
ffmpeg.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/ffmpeg.c b/ffmpeg.c
index a004ab825d7..d758e39fd91 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -1685,6 +1685,29 @@ static void opt_frame_size(const char *arg)
}
}
+static void opt_frame_aspect_ratio(const char *arg)
+{
+ int x = 0, y = 0;
+ double ar = 0;
+ const char *p;
+
+ p = strchr(arg, ':');
+ if (p) {
+ x = strtol(arg, (char **)&arg, 10);
+ if (arg == p)
+ y = strtol(arg+1, (char **)&arg, 10);
+ if (x > 0 && y > 0)
+ ar = (double)x / (double)y;
+ } else
+ ar = strtod(arg, (char **)&arg);
+
+ if (!ar) {
+ fprintf(stderr, "Incorrect aspect ratio specification.\n");
+ exit(1);
+ }
+ frame_aspect_ratio = ar;
+}
+
static void opt_gop_size(const char *arg)
{
gop_size = atoi(arg);
@@ -2677,6 +2700,7 @@ const OptionDef options[] = {
{ "r", HAS_ARG, {(void*)opt_frame_rate}, "set frame rate (in Hz)", "rate" },
{ "re", OPT_BOOL|OPT_EXPERT, {(void*)&rate_emu}, "read input at native frame rate" },
{ "s", HAS_ARG, {(void*)opt_frame_size}, "set frame size (WxH or abbreviation)", "size" },
+ { "aspect", HAS_ARG, {(void*)opt_frame_aspect_ratio}, "set aspect ratio (4:3, 16:9 or 1.3333, 1.7777)", "aspect" },
{ "croptop", HAS_ARG, {(void*)opt_frame_crop_top}, "set top crop band size (in pixels)", "size" },
{ "cropbottom", HAS_ARG, {(void*)opt_frame_crop_bottom}, "set bottom crop band size (in pixels)", "size" },
{ "cropleft", HAS_ARG, {(void*)opt_frame_crop_left}, "set left crop band size (in pixels)", "size" },
--
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