2/24/2023 0 Comments Avidemux audio out of sync![]() So the best thing to do is: demux your V and your A to separate streams, fix your V, then accordingly fix your A (using separate tools) and then remux them together again. Some of them are more processor intensive in order to avoid non-musical artifacts. That is often not possible with general-purpose apps, but with audio-specific apps there are a number of pitch-correcting duration/tempo change options. While there might be some apps that do BOTH kinds of speedup/slowdown, the better tools work specifically with one media type or the other (A or V).įor example, with audio, most people prefer that when speeding up/slowing down that the pitch remain the same. Make sure Video output is set to Copy Audio output is set to. Changing video's FPS changes its duration, so you'd have to change audio's duration the same percentage as was done to the video to keep it in sync with the video. Shift audio with Avidemux Open up Avidemux, and load the video file that you want to work with. Otherwise your audio will be out of sync. Too much and you have silly "chipmunk" voices.įor them to maintain sync, they have to start at the same time and keep the same duration. If you are editing a file with variable bitrate audio, run AudioBuild VBR Time Map before you do any editing. A similar thing happens with audio: if you speed up the audio, the pitch & tempo changes. An Alternative Solution: Align the Audio Tracks That makes it easy to identify the moment of the 'clap' within both the video and audio tracks,nd then carry out the necessary realignment. Too much and you have silly "keystone cops" type of motion. With the video paused, place a check in the box labelled Shift, which can be found in the Audio Output section. ![]() Use the timeline slider (see screenshot below) to move the video forward a bit. If you speed up the video, the rate of motion changes. Navigate to the video file that’s out of sync, select it and then click Open After a few moments the video will open up in Avidemux. Multi-channel/multi-track audio is fairly common, while multi-track video is relatively rare (stereo 3d most common exception). ![]() Audio is (usually) sample-accurate, while Video is frame-accurate. While multimedia containers may make it look to average users that V+A are combined, they are different beasts with different requirements. ![]()
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