From 11b9c0f4d34f4f916077697f5796d81a56dec2a6 Mon Sep 17 00:00:00 2001
From: Luca Abeni <lucabe72@email.it>
Date: Mon, 13 Mar 2006 09:47:37 +0000
Subject: [PATCH] Tell the user why video capture is failing
Originally committed as revision 5160 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
libavformat/grab.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/libavformat/grab.c b/libavformat/grab.c
index 8b811833236..e16ea7b875d 100644
--- a/libavformat/grab.c
+++ b/libavformat/grab.c
@@ -68,16 +68,24 @@ static int grab_read_header(AVFormatContext *s1, AVFormatParameters *ap)
const char *video_device;
int j;
- if (ap->width <= 0 || ap->height <= 0 || ap->time_base.den <= 0)
+ if (ap->width <= 0 || ap->height <= 0 || ap->time_base.den <= 0) {
+ av_log(s1, AV_LOG_ERROR, "Bad capture size (%dx%d) or wrong time base (%d)\n",
+ ap->width, ap->height, ap->time_base.den);
+
return -1;
+ }
width = ap->width;
height = ap->height;
frame_rate = ap->time_base.den;
frame_rate_base = ap->time_base.num;
- if((unsigned)width > 32767 || (unsigned)height > 32767)
+ if((unsigned)width > 32767 || (unsigned)height > 32767) {
+ av_log(s1, AV_LOG_ERROR, "Capture size is out of range: %dx%d\n",
+ width, height);
+
return -1;
+ }
st = av_new_stream(s1, 0);
if (!st)
--
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