[FFmpeg-user] Random repetitions in output

[Carl Eugen Hoyos]

2017-11-06 14:25 GMT+01:00 Moritz Barsnick <barsnick at gmx.net>:
> On Mon, Nov 06, 2017 at 13:46:29 +0100, Carl Eugen Hoyos wrote:
>> > It seems the image2 muxer uses the framerate reported by the
>> > demuxer (but as cfr).
>>
>> This is wrong, the image2 muxer does not know anything about
>> the input frame rate.
>
> Hmm. Even if I avoid testsrc (in case it is not quite a demuxer, but
> rather a filter chain element) and go through an "external file", the
> image2 muxer reports use of the same framerate as the input:

That is because ffmpeg (the application) defaults to the input
framerate for the output file (for all output file types).

Carl Eugen