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You can use pretty much any movie editor that allows the import of single frames. First line up your audio, work out where you want the key frames to be (eg for reversing the movement when shaking the head) and then fill in the other frames. If your editor allows interpolation between frames, then you can use this to make the movie less jerky. Or you can ...


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A/V sync problems are noticeable at about +/- 0.1 sec. The samplerate clock in your phone and camera would have to be exactly the same speed to within 0.1 sec over 10 mins, or however long your clips are, for you to be able align at only one point. 0.1 / (10 * 60) = .0001. That's about 1 part in 10k. Wikipedia says quartz clocks are often as good as 6 ...


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I tried kdenlive, so I'll post my findings about it as an answer. It didn't quite do the job, so I'm not going to mark this as the accepted solution. kdenlive easily imports my clips in mjpeg+pcm, and flac. And looks like it can export through ffmpeg, which is what I want. It has a feature to "set audio reference", and for other tracks, "align audio to ...


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Try Blender's Video Editing. If Video and audio where recorded at the same time it will be easy to sync them, just be sure your video frame rate is correctly set in Blender and that you check synced in the video editor (at the bottom beside the time line and play, stop, etc... buttons. Don't be scared by Blender's complexity, you are not going to use any ...


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In the question sync separate audio to video+bad-camera-audio, free NLE recommendations I detailed how I manually did A/V sync for audio recorded separately from the video, with audacity and ffmpeg. 44.1kHz vs 48kHz has nothing to do with the drift. The problem is that the camera's clock isn't exactly the same speed as the laptop's clock, so even though ...



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