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slow down playback for speech sync in animation

Gingerling
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Hi, I am (probably) getting funded to make a series of animations about free software using free software. They are stop motion using paper dolls. I am struggling to sync the speech (speech is recorded and then I syc the right facial expression to the right sound using image clips). I am not convinced that kdenlive is the right software for this at all - but I can't seem to find an alternative. I am having issues with how accuracy of playback. It would help if I could slow down playback substantially. Is this possible? I don't want to use speed effects or anything - just literally slow down the playback in the project viewer. Anyone have any thoughts, ideas, solutions etc?

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Anna
Gingerling
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found a semi solution

1) slow down speech clip by 50% in audactiy
2) render/export as lossles flack (lossless is important)
3) timed mouth shape speech iamges to it in kdenlive
4) render with no sound as lossless video
5) import the lossless clip into main kdenlive project and speed up to 200% - line up next to normal speed audio (I used a proxy clip to enable playback etc)
6) result - very good! Bit flickery and stuff

 
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