[FFmpeg-user] Using the "select" filter

[Tim Nicholson]

The examples of using the select filter given at:-

http://ffmpeg.org/ffmpeg.html#select

suggest, for example,

# select only I-frames
select='eq(pict_type\,I)'


However when I tried this I got an error.

ffmpeg -i in.mp4 -vf "select='eq(pict_type\,I)', showinfo" -f mp4 -y 
/dev/null
[..]
Missing ')' or too many args in 'eq(pict_type\,I)'


Removing the "\" which I assume is there to "escape" the comma solved 
the problem, thus:-

ffmpeg -i in.mp4 -vf "select='eq(pict_type,I)', showinfo" -f mp4 -y 
/dev/null

This looks like a small error in the docs.

-- 
Tim

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