[Ffmpeg-devel] Differences between H.263 and H.263i and H.263p in FFMPEG

[Guillaume Poirier]

Tobias Marx wrote:
> I have checked out ffmpeg and compiled it.
> 
> I tried to run the watermark module and I got the following error:
> 
> undefined symbol: sws_getCachedContext
> 
> The whole output was:
> 
> p15201909:/home/ffmpeg/ffmpeg # ffmpeg -i sample.mpg -vhook '/usr/local/lib/vhook/watermark.so -f logo.gif' -an out.mov
> FFmpeg version SVN-r6708, Copyright (c) 2000-2006 Fabrice Bellard, et al.
>   configuration:
>   libavutil version: 49.0.1
>   libavcodec version: 51.20.0
>   libavformat version: 50.6.0
>   built on Oct 16 2006 14:44:13, gcc: 3.3.5 20050117 (prerelease) (SUSE Linux)
> Input #0, mpeg, from 'sample.mpg':
>   Duration: 00:00:00.0, start: 0.500000, bitrate: 49971 kb/s
>   Stream #0.0[0x1e0]: Video: mpeg1video, yuv420p, 320x240, 104857 kb/s, 25.00 fps(r)
> /usr/local/lib/vhook/watermark.so: undefined symbol: sws_getCachedContext
> Failed to add video hook function: /usr/local/lib/vhook/watermark.so -f logo.gif
> 
> Have you got any idea whats going wrong?

./configure --enable-swscaler && make dep && make

Guillaume