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Old 25th November 2010, 19:10   #1  |  Link
Transcoder Transponder
Join Date: Apr 2008
Location: Galloway, GA, USA
Posts: 1
MKV - Slowing file down?

Hey all -
Happy Turkey Day for those in the US.

Have a question. Somehow, during an encode of a video file, the video and audio got sped up. i.e. It should be playing at 23.976, but both are sped up playing at 25fps.

To avoid re-encoding both files, is there a way I can re-mux them and slow the audio down?

What I've tried -
Using MKVMerge, specifying the framerate as 23.976 - this works fine. However, when I put in .95904xxx for the stretch (to slow it down, 23.976/25), it seems to stretch the audio a little too much. What should be the proper value for the audio in there? Or am I stuck and have to run the audio through a processor?

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Old 25th November 2010, 20:29   #2  |  Link
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Join Date: Aug 2005
Posts: 16,270
Try using "23.976/25" (without quotation marks) instead...
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