[HOW-TO] CONVERT AUDIO and CONTAINER
Currently our players have trouble playing 5.1 AAC and MP4 files so here is a quick "fix" from me
NOTE: keep the original files if you are uncertain if the new is OK
AAC to AC3Needed tools:
Getting ready:
- Have Nero AAC Encoder, mkvmerge and yamb installed
- Create a new folder for extracting audio and extract eac3to to it
- Create a new shorcut to CMD.exe in it and change the execute in parameter to your folder location
Extracting the audio:
execute the cmd shortcut and in command line do:
- neroaacenc -if <DRAG AND DROP FILE HERE> -of <NAME FOR THE AUDIO EX: audio.WAV>
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Notes:
it takes tome time, and space (3GB / hour)
it will extract the first audio track, multiple audio files will need to repack
must extract to wav
bad files will give errors, you will need to repack them
Converting it to ac3
still in command line do:
- eac3to <THE PREVIOUSLY AUDIO FILE EX: audio.wav> <NEW AUDIO FILE EX: AUDIO.AC3> -448
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Notes:
This will force the bitrate to 448 deppending on your option, otherwise will do 640
Audio channels can also be swapped, but no need to do that
Muxing the new audio and video to MKV:
Now in the desktop
- Open mkvmergegui
- Drag and drop the video file in it
- Drag and drop the new audio file to it
- Uncheck the old audio track to ignore it
- Change the language from undetermined to the propper source (optional)
- Change the new file name
- Press start muxing
Your file is DONE, test it an if ok delete the old files, and the "audio.wav" and "audio.ac3"If you cant extract the audio with neroaccenc do thisRepacking a file:
- open mkvmergegui for mkv or yamb for mp4(select 1st option)
- drag and drop the bad file
- guive the new name
- start muxing
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You can skip the video stream only if you need the audio for extraction otherwise keep it
- open mkvmergegui
- drag and drop the old file
- start muxing
