[Ffmpeg-devel] [PATCH] Attempt image2 in watermark vhook

[Luca Abeni]

Hi,

On Wed, 2006-08-30 at 15:34 +0200, Guillaume POIRIER wrote:
[...]
> > Try this:
> > ./ffmpeg -i \
> > /home/guillaume/Desktop/guillaume/The_Godfather-1972_snow.avi \
> > -vhook '/home/guillaume/Prgm/ffmpeg/vhook/watermark.so -f
> > /home/guillaume/Documents/7.15.gif ' \
> > outfile.avi
> >
> > You must enclose the whole vhook (DLL and parameters) in single
> >  quotes (and keep it in one single line), and probably substitute the ~ by
> > the real path (~ is really
> > interpreted by your shell).
> 
> Ok, it works well without your patch, but with your patch, here's what happens:
> 
> ./ffmpeg -i /home/guillaume/Desktop/guillaume/The_Godfather-1972_x264.avi
> -vhook '/home/guillaume/Prgm/ffmpeg/vhook/watermark.so -f
> /home/guillaume/Documents/7.15.gif' outfile.avi
> FFmpeg version SVN-r6128, Copyright (c) 2000-2004 Fabrice Bellard
>   configuration:  --enable-gpl --enable-swscaler
>   libavutil version: 49.0.0
>   libavcodec version: 51.11.0
>   libavformat version: 50.5.0
>   built on Aug 30 2006 15:23:25, gcc: 4.0.3 (Ubuntu 4.0.3-1ubuntu5)
> Input #0, avi, from
> '/home/guillaume/Desktop/guillaume/The_Godfather-1972_x264.avi':
>   Duration: 00:00:20.0, start: 0.000000, bitrate: 1184 kb/s
>   Stream #0.0: Video: h264, yuv420p, 688x576, 25.00 fps(r)
> /home/guillaume/Prgm/ffmpeg/vhook/watermark.so: undefined symbol: img_convert
> Failed to add video hook function:
> /home/guillaume/Prgm/ffmpeg/vhook/watermark.so -f
> /home/guillaume/Documents/7.15.gif
I think the problem here is that you configured ffmpeg with
--enable-swscaler, but watermark.so has not been ported to swscale yet
(when --enable-swscaler is used, img_convert() is not compiled into
libavcodec, so the hook cannot link it)


				Luca
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