Zipfunk Posted February 16 Share Posted February 16 I've been given an MP4 video file that I need to extract dialogue from. Its surround so the stems are clean. I can play it on VLC (not a shock) but not QT and Logic won't let me import it. I tried using Handbrake to change it but even though the file still seems to be surround the stems are not surround when I try to import into Logic (They are stereo) Is there a way to re-encode the MP4 to get Logic to import it but retain the 6 channels? (If I right click on the file and get info I see it says 'Audio:6 channels' but after encoding it it doesn't say anything.) Drew Quote Link to comment Share on other sites More sharing options...
wonshu Posted February 16 Share Posted February 16 Perhaps you can get Handbrake to only export the audio and only export the video, then you have 2 files and hopefully they're still in sync when you bring them into Logic. If Logic can open the video then... Quote Link to comment Share on other sites More sharing options...
Zipfunk Posted February 16 Author Share Posted February 16 1 hour ago, wonshu said: Perhaps you can get Handbrake to only export the audio and only export the video, then you have 2 files and hopefully they're still in sync when you bring them into Logic. If Logic can open the video then... Handbrake won’t export audio only. I checked on that. maybe there’s another reasonably priced program that takes audio stems from video files? Quote Link to comment Share on other sites More sharing options...
wonshu Posted February 16 Share Posted February 16 If you're technically inclined and not afraid, you could install homebrew and ffmpeg - that should definitely be able to de-mux the audio and extract those channels. But you have to be comfortable with the terminal... 1 Quote Link to comment Share on other sites More sharing options...
Zipfunk Posted February 16 Author Share Posted February 16 1 minute ago, wonshu said: If you're technically inclined and not afraid, you could install homebrew and ffmpeg - that should definitely be able to de-mux the audio and extract those channels. But you have to be comfortable with the terminal... I can be comfortable if I can make it happen. I’ll look for them. I’ve seen ffmpeg but I’ve not seen homebrew Quote Link to comment Share on other sites More sharing options...
wonshu Posted February 16 Share Posted February 16 Perhaps you can get a binary of ffmpeg otherwise, I had to install it using homebrew. 2 Quote Link to comment Share on other sites More sharing options...
Zipfunk Posted February 17 Author Share Posted February 17 18 hours ago, wonshu said: Perhaps you can get a binary of ffmpeg otherwise, I had to install it using homebrew. I downloaded ffmpeg and homebrew. I need to have the Xtools and started downloading with terminal but that failed each time. Is there another way to do this? Quote Link to comment Share on other sites More sharing options...
Solution Zipfunk Posted February 17 Author Solution Share Posted February 17 So I figured it out. I'm posting this here in case anyone is in the same boat. First off, thank you @wonshu for trying to help. I clearly don't know what to do with home-brew and ffmpeg but you helped and I appreciate that. This is how I did it (all with freeware) I dropped the mp4 into MediaHuman Audio Converter and selected WAV/24bit and 5.1/48000Hz This dumped out a surround file that I needed to split into the separate stems so I dropped it into Audacity and exported them as multiple. This gave me wavs 24bit that I can use and send to post house after I'm done. I hope this helps anyone in the future. Drew 2 Quote Link to comment Share on other sites More sharing options...
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