[FFmpeg-user] Frame rate doubled when using video copy codec (m2ts->mp4)

Carl Eugen Hoyos ceffmpeg at gmail.com
Sun Jan 8 14:25:34 EET 2017

2017-01-08 12:24 GMT+01:00 Paul Atkins <pdatkins at btinternet.com>:

> This works and produces a video which plays OK but there are some
> very odd things with the frame rate, and other aspects that make it very

> hard to believe the video has just been copied into the new container
> unchanged.

(No, this analysis does not really make sense.)

> Despite this the movie plays at correct rate!

Then a fix is not very likely.

> I'm sure it's not re-encoding
> the video as its quick (e.g. video stream is processed at roughly 15x
> realtime), but it is doing something odd to change frame rate, and size
> bit/rates as well.

Feel free to provide a short input sample.

For future questions, please remember to always test current FFmpeg
git head before posting here.

Carl Eugen

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