On Mon, 11 Apr 2022, Anton Khirnov wrote:
Quoting Marton Balint (2022-04-10 20:11:59)
60 fps content have "Number of Frames" set to 30 in the tmcd atom, but the
frame duration / timescale reflects the original video frame rate.
Therefore we multiply the frame count with the quotient of the rounded timecode
frame rate and the "Number of Frames" per second to get a frame count in the
original
(higher) frame rate.
Note that the frames part in the timecode will be in high frame rate which will
make the timecode different to e.g. MediaInfo which seems to show the 30 fps
timecode even for 120 fps content.
Regression since 428b4aacb1a91a267650de644519882a5f700388.
Fixes ticket #9710.
Fixes ticket #9492.
Sounds like there should be a test for this.
The smallest file I managed to find which is affected by this is
mov/canon_6d/mvi_9114.mov, but that is still 12 MB, therefore probably not
fit for addition to fate-samples.
With our muxer, the issue is not reproducible, so remuxing is not an
option.
Regards,
Marton
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