I need a codec which support multiple PCM audio rec and can open in adobe Premiere

Dihelson Mendonca

Dihelson Mendonca

Member
Hello, folks,

I´m trying ti record multitrack audio on OBS, to simplify the process of recording a musical group. I know MP4 can run multitrack, and can be opened in Adobe Premiere, but Mp4 doesn´t support WAV ( PCM ) a lossless codec to the recording, so, there´s a very perceptible loss when recording in Mp4. I tried Matroska ( MKV ), it records audio in PCM, but it doesn´t record in multiple tracks, or if it records, it can´t be opened in Premiere, because adobe premiere does´t deal with MKV files. So, I need a codec that I can record multiple wav audio tracks, and can be opened in Adobe Premiere. Now, what would be ?

Thanks !
 
Tomasz Góral said:
hmm,
Copy from mkv to mp4 - only video, copy all track to separate wav file. For all this i use ffmpeg (is free, working from command line).
Click to expand...

Interesting. Thank you for this answer. I don´t know how to use FFMPEG yet, but looks like a solution. I tried to use MOV files, which allows audio multitracks also, but don´t know why, when I open in adobe premiere, there´s only one audio track, not two ones. When I open in VLC, I can see there´s two audio tracks.

I tried to use Demux feature from OBS itself to transform MKV to MP4 and separated audio tracks, but whenever I try to use this Demux feature, I always get an error message, kind of "the file may be not complete", I change directory, no solution. It does nothing.

Thanks !
 
Why not run a DAW/multi-track recorder and have that record your audio cleanly? You then take the stereo mix inside the video file from OBS and sync your DAW recorded audio to the video file's audio stream in post, which is *REALLY* easy to do. Recording in a DAW doesn't take up much CPU (esp. at the higher latencies) and it would give you all the flexibility you're looking for.
 
With ffmpeg, you can extract each audio track from whatever video format you used with OBS and directly import the resulting audio file in your video editor:

ffmpeg -i input.mkv -map 0:a:0 -vn -c copy "audio track0.wav"
ffmpeg -i input.mkv -map 0:a:1 -vn -c copy "audio track1.wav"
ffmpeg -i input.mkv -map 0:a:2 -vn -c copy "audio track2.wav"

-map 0:a:2 means: 0 is for input file 0 (we have only one input file), a is for audio and 2 means audio track 2. Starts counting from 0.
-c copy means copying the audio data and not re-encoding, so the resulting file format (in the example: *.wav) has to support the codec. In case of PCM audio, *.wav is ok.
-vn means to drop any video. Required if you want to extract audio from a video file.
 
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