On 1/7/2018 12:38 PM, Jim DeLaHunt wrote:
Those examples lack a `-f image2` option. I would expect that option to
be there; after all, isn't the image2 format exactly what this section
is trying to explain?
FFmpeg probes the input to determine its format. Adding the `-f` option
for an input forces the use of that demuxer e.g.
with a MKV renamed to MP4, running
ffmpeg -i in.mp4
will still result in FFmpeg recognizing it as a Matroska file.
but
ffmpeg -f mp4 -i in.mp4
will force the MP4 demuxer, and FFmpeg will throw an error.
Regards,
Gyan
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