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Sharc · 4th December 2019, 12:58

.mp4 files have a 'rotation' parameter which ensures that portrait filmed clips (for example from mobile phones) are played back in portrait orientation on TV etc.
When remuxing such files to .mkv the orientation flag seems to get lost and the portrait clip is shown in landscape orientation (90° flipped). Is there an option for keeping the rotation flag in .mkv, or would I have to resize and re-encode the source before remuxing it to .mkv?

4th December 2019, 12:58	#557 \| Link
Sharc Registered User Join Date: May 2006 Posts: 3,997	Portrait / landscape .mp4 files have a 'rotation' parameter which ensures that portrait filmed clips (for example from mobile phones) are played back in portrait orientation on TV etc. When remuxing such files to .mkv the orientation flag seems to get lost and the portrait clip is shown in landscape orientation (90° flipped). Is there an option for keeping the rotation flag in .mkv, or would I have to resize and re-encode the source before remuxing it to .mkv?