This very quickly produces a separate audio file from the video soundtrack. Video:0kB audio:1373kB global headers:0kB muxing overhead 6.596438% Please use avconv instead.īut it’s here for now and remains the Swiss-army knife of digital audio-video. This program is only provided for compatibility and will be removed in a future release. Using the venerable ffmpeg, which is a command-line tool, copy the original dirty audio as-is to a lossless. Don’t trim either one separately or you’ll no longer have sound synced to the pictures!įirst step is to lift the dirty audio track from the source video. Note: if you are going to edit any video for length or sequence, either do it before or after you clean the audio. I believe in using the right tool for the job, so I lifted out and cleaned the audio track in Audacity, then put it back with the original visuals using Openshot. But it is possible to clean up the sound track using a sound editor. You can chop it, splice it, remove it – but clean it? No.
Most video editors (certainly on Linux) have limited capability for sound. I’m not planning to broadcast this in HD any time soon, but as it’s educational material, it would be good if folks could hear what the instructor has to say. Let’s say I have some HD video shot on my Samsung Galaxy SII: for a phone it’s a good video camera and ordinarily picks up pretty good sound, but, thanks to the venue (your typical tin-shed sports centre) and the other activities (toddlers on bouncy castle, bless ’em) the sound quality was terrible.