[FFmpeg-user] null video sink
Carl Eugen Hoyos
cehoyos at ag.or.at
Wed Dec 30 00:02:48 CET 2015
Roger Pack <rogerdpack2 <at> gmail.com> writes:
> I noticed the docs for the "null" video filter say:
> Null video sink: do absolutely nothing with the input video. It is
> mainly useful as a template and for use in analysis / debugging tools.
> Could anyone be kind enough to show me how to use this in a filtergraph?
> When I try to, it seems to still output and encode:
ffmpeg is just greedy but the nullsink filter is
really a nullsink, see also:
ffmpeg -f lavfi -i testsrc -filter_complex vflip,nullsink -t 10 out.avi
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