[FFmpeg-user] unable to crop and then resize movie

[Thierry Foucu]

On Fri, Jun 24, 2011 at 2:29 PM, pgoldweic <pgoldweic at northwestern.edu>wrote:

> I am having trouble when I try to resize a movie that is 1920x1080 after
> cropping it.
>
> Here's the command I am using:
>
> ffmpeg -i mymovie.mp4 -vf "crop=in_w-2*240:in_h:240:0" -s 480x360 vcodec
> libx264 -acodec copy mymovie-cropped.mp4
>
> Add the scaler in the filter otherwise the -s is done before the cropping

ffmpeg -i mymovie.mp4 -vf "crop=in_w-2*240:in_h:240:0,scale=480x360"
-vcodec libx264 -acodec copy mymovie-cropped.mp4



> I get the following error:
> [crop @ 0x5eb6fc0] Invalid too big or non positive size for width '0' or
> height '360'
> Error opening filters!
>
> Can somebody suggest how to fix this?
>
> The complete output is:
> ------------------------------------------------------
> ffmpeg version 0.7-rc1, Copyright (c) 2000-2011 the FFmpeg developers
>  built on Jun 14 2011 12:55:59 with gcc 4.1.2 20080704 (Red Hat 4.1.2-50)
>  configuration: --enable-libvpx --enable-libfaac --enable-shared
> --enable-memalign-hack --enable-gpl --enable-libtheora --enable-libmp3lame
> --enable-libvorbis --enable-libx264 --enable-libxvid --enable-nonfree
> --enable-postproc --enable-avfilter --enable-swscale --enable-pthreads
> --enable-libfreetype --arch=x86_64
>  libavutil    50. 40. 1 / 50. 40. 1
>  libavcodec   52.120. 0 / 52.120. 0
>  libavformat  52.108. 0 / 52.108. 0
>  libavdevice  52.  4. 0 / 52.  4. 0
>  libavfilter   1. 77. 0 /  1. 77. 0
>  libswscale    0. 13. 0 /  0. 13. 0
>  libpostproc  51.  2. 0 / 51.  2. 0
>
> Seems stream 0 codec frame rate differs from container frame rate: 59.94
> (60000/1001) -> 29.97 (2997/100)
> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'open.mp4':
>  Metadata:
>    major_brand     : mp42
>    minor_version   : 0
>    compatible_brands: mp42mp41
>    creation_time   : 2011-06-22 16:50:18
>  Duration: 00:00:15.55, start: 0.000000, bitrate: 825 kb/s
>    Stream #0.0(eng): Video: h264 (Main), yuv420p, 1920x1080 [PAR 1:1 DAR
> 16:9], 662 kb/s, 29.97 fps, 29.97 tbr, 29970 tbn, 59.94 tbc
>    Metadata:
>      creation_time   : 2011-06-22 16:50:18
>    Stream #0.1(eng): Audio: aac, 48000 Hz, stereo, s16, 157 kb/s
>    Metadata:
>      creation_time   : 2011-06-22 16:50:18
> File 'opencroppedresized-standard.mp4' already exists. Overwrite ? [y/N] y
> [buffer @ 0x5f90340] w:1920 h:1080 pixfmt:yuv420p
> [scale @ 0x5f908a0] w:1920 h:1080 fmt:yuv420p -> w:480 h:360 fmt:yuv420p
> flags:0xa0000004
> [crop @ 0x5eb6fc0] w:480 h:360 -> w:0 h:360
> [crop @ 0x5eb6fc0] Invalid too big or non positive size for width '0' or
> height '360'
> Error opening filters!
>
>
> ----------------------------------------------------------
> Thanks!
>
>
> --
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