FFMPEG and libavfilter

Question

With the currently installed ffmpeg I can't post watermark on converted videos. Can the reason for that be that I have not installed libavfilter library?

Currently # ffmpeg -v looks like:

FFmpeg version SVN-r20374, Copyright (c) 2000-2009 Fabrice Bellard, et al.
built on Oct 26 2009 22:47:01 with gcc 4.1.2 20080704 (Red Hat 4.1.2-46)
configuration: --enable-libmp3lame --enable-libopencore-amrnb --enable-version3 -   enable-libopencore-amrwb --enable-version3 --enable-nonfree --enable-libfaad --enable-gpl - -disable-mmx --enable-shared --enable-libfaac --enable-libvorbis
libavutil     50. 3. 0 / 50. 3. 0
libavcodec    52.37. 1 / 52.37. 1
libavformat   52.39. 2 / 52.39. 2
libavdevice   52. 2. 0 / 52. 2. 0

As you can see I'm missing libavfilter? How can I add that library to FFMPEG and successfully add watermark on videos?

Thanks for any help.

Answer 1

To add watermark on videos, you can try this example to top left corner. It uses videofilter vf link

ffmpeg –i inputvideo.avi -vf "movie=watermarklogo.png [watermark]; [in][watermark] overlay=10:10 [out]" outputvideo.flv

Answer 2

It appears you are missing libavfilter, try installing it using the following:

cd /
svn checkout svn://svn.ffmpeg.org/soc/libavfilter
cd libavfilter
./checkout.sh

You will then have to enable it in ffmpeg:

./configure --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-pthreads --enable-libfaac --enable-libfaad --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libxvid --enable-x11grab --enable-avfilter --enable-avfilter-lavf
make

Verify it has worked using:

ffmpeg -filters

In my experience, installing extensions and codecs after ffmpeg has already been installed does not always work. If it doesn't work, I recommend removing ffmpeg and starting over.