[FFmpeg-user] Drop frames during framemd5 calculation of DPX files

Carl Eugen Hoyos ceffmpeg at gmail.com
Tue Mar 31 09:36:33 EEST 2020

> Am 31.03.2020 um 08:19 schrieb Matthew Yang <matthew at asianfilmarchive.org>:
> vsync drop worked well for me.

> can you explain what causes misdetected
> frame rates?

The dpx files store a frame rate that is ignored by the demuxer (and therefore unused for the default output frame rate) but used to calculate timestamps on decoding, leading to frame drops.
(This is at least my working hypothesis.)
You should be able to force the correct framerate with the input option “-framerate”.

Please find out what top-posting means and avoid it here.

Carl Eugen

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