[Ffmpeg-devel] Cropping and resizing
Luca Abeni
lucabe72
Fri Mar 17 11:11:59 CET 2006
Hi Harald,
On Fri, 2006-03-17 at 10:00 +0100, Harald Milz wrote:
[...]
> > of ffmpeg when you type this command line? Also, what's the size of your
> > input video?
>
> ffmpeg -i vdrsync.mpv -croptop 84 -cropbottom 84 -aspect 16:9 -b 15000
> -s 720x576 -f rawvideo -vcodec mpeg2video -ilme -ildct -y vdrsync1.mpv
> ffmpeg version 0.4.9-pre1, build 4718, Copyright (c) 2000-2004 Fabrice
> Bellard
> built on Feb 27 2005 17:54:09, gcc: 3.3.4 (pre 3.3.5 20040809)
> Input #0, mpegvideo, from 'vdrsync.mpv':
> Duration: N/A, bitrate: N/A
> Stream #0.0: Video: mpeg2video, 720x576, 25.00 fps
> Output #0, rawvideo, to 'vdrsync1.mpv':
> Stream #0.0: Video: mpeg2video, 720x576, 25.00 fps, q=2-31, 15000 kb/s
> Stream mapping:
> Stream #0.0 -> #0.0
I tried the very same command line with a 720x576 mpeg2 test video I
have here, and I cannot reproduce the problem with current CVS (cropping
& rescaling seem to work fine).
I see that you are using an ffmpeg built on Feb 27... I committed a fix
for ffmpeg cropping on Mar 9, so I think you are hitting the bug fixed
by such committ... Can you try updating to current CVS (or applying the
attached patch)?
If that does not work, you'll need to make a piece of your input video
available somewhere, so that I can reproduce the problem.
Thanks,
Luca
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Date: Thu, 9 Mar 2006 16:27:25 +0100 (CET)
From: lucabe at mplayerhq.hu (Luca Abeni CVS)
Subject: [Ffmpeg-cvslog] CVS: ffmpeg ffmpeg.c,1.370,1.371
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Update of /cvsroot/ffmpeg/ffmpeg
In directory mail:/var2/tmp/cvs-serv5810
Modified Files:
ffmpeg.c
Log Message:
Fix crop & pad + rescaling
Index: ffmpeg.c
===================================================================
RCS file: /cvsroot/ffmpeg/ffmpeg/ffmpeg.c,v
retrieving revision 1.370
retrieving revision 1.371
diff -u -d -r1.370 -r1.371
--- ffmpeg.c 28 Feb 2006 11:32:31 -0000 1.370
+++ ffmpeg.c 9 Mar 2006 15:27:22 -0000 1.371
@@ -1729,8 +1729,8 @@
} else if ((codec->width == icodec->width -
(frame_leftBand + frame_rightBand)) &&
(codec->height == icodec->height -
- (frame_topBand + frame_bottomBand)))
- {
+ (frame_topBand + frame_bottomBand)) &&
+ (frame_rightBand + frame_leftBand + frame_topBand + frame_bottomBand)) {
ost->video_resample = 0;
ost->video_crop = 1;
ost->topBand = frame_topBand;
@@ -1738,7 +1738,8 @@
} else if ((codec->width == icodec->width +
(frame_padleft + frame_padright)) &&
(codec->height == icodec->height +
- (frame_padtop + frame_padbottom))) {
+ (frame_padtop + frame_padbottom)) &&
+ (frame_padright + frame_padleft + frame_padtop + frame_padbottom)) {
ost->video_resample = 0;
ost->video_crop = 0;
ost->video_pad = 1;
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