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1

Could you tell me your input specifics. Because if the input was 60fps, there may be some problems if you render with standard settings, I once had this problem. If you want to solve that, just click on save movie and scroll down till you see "create custom settings", then set the frame rate to 30fps, or whatever you want.


0

Don't transcode your video, there shouldn't be any need to do that. You might be able to concat the two ogm videos into a single ogm, or mkv, without transcoding, just remuxing. (e.g. with ffmpeg's concat filter, and -codec copy) http://www.nikse.dk/SubtitleEdit has a split feature. You'll have to edit the 2nd file after splitting, since the split dialog ...


2

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 ...


1

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 ...


1

i think MPEG Streamclip can do this. It's free on mac and pc.


2

I was encountering audio sync issues when trying to do this with Avidemux, but I came upon a two-step process that keeps the audio in sync: Concatenate files using MKVToolNix (I used version 7.4.0 for Mac). This results in a Matroska video (.mkv) file. Remux the .mkv file to MP4 format using Avidemux (I used verison 2.6 for Mac). I chose the MP4v2muxer ...


0

My best guess (and it is a total guess) is that things are actually lagging when you are viewing it unrendered. If the video is playing out on a delay from when the audio should actually be playing, you would have aligned it wrong and then when you output and if makes an accurate playback, you find that the audio is coming before the video. Most probably ...



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