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  1. Member
    Join Date: Jul 2007
    Location: United Kingdom
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    Hi,

    Is it possible to remove a single channel from a 5.1 ac3 file? I have a file I would like to remove 1 track (probably centre track) from the file. Im not worried about the output being 5.1 or 2Ch or whatever, long as it is not Mono I don't really mind to much
    Im sure someone told me it could be done with Canopus Procoder, but I have not found the option.
    Any tools that can be suggested would be great, also maybe a brief guide on what to do, in case I get stuck, hope thats' not to much trouble.

    Thankyou in advance
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  2. Member hech54's Avatar
    Join Date: Jul 2001
    Location: Yank in Europe
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    You can demux the audio from the video and use BeSweet's "6 Waves" output. That's how I do it. You'll need BeSweet GUI as well.
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  3. I'm a Super Moderator johns0's Avatar
    Join Date: Jun 2002
    Location: canada
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    An easier way to do that is with audacity with the ffmpeg addon and export as ac3 and deselect the center channel and save.
    I think,therefore i am a hamster.
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  4. Member
    Join Date: Jul 2007
    Location: United Kingdom
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    i gave besweet a try but couldn't find the 6wave option mentioned. i will have a go with audacity when i get home and see if i have any luck i did already try importing the file into audacity earlier but it didn't work but that was without the addon mentioned so hopefully that will be the case
    thanks for taking the time to reply.
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  5. Originally Posted by johns0 View Post
    An easier way to do that is with audacity with the ffmpeg addon and export as ac3 and deselect the center channel and save.
    Have to watch not to save as a mono track though. Be sure to mark tracks as left or right to get stereo output.
    press 'play' to test it first.
    Last edited by transporterfan; 21st Mar 2012 at 15:39.
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  6. I'm a Super Moderator johns0's Avatar
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    Originally Posted by transporterfan View Post
    Originally Posted by johns0 View Post
    An easier way to do that is with audacity with the ffmpeg addon and export as ac3 and deselect the center channel and save.
    Have to watch not to save as a mono track though. Be sure to mark tracks as left or right to get stereo output.
    press 'play' to test it first.
    You can export as 6 channel ac3 and disable the center,not as stereo since the op wants to edit the 5.1 ac3.
    I think,therefore i am a hamster.
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  7. I know just a warning really. jonhso, I don't want to hijack the thread but can you answer me question while you're here?
    If I import 5.1 from an original source I get 10 minutes of silence added to the beginning of the track. Do you have any idea why that is?
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  8. I'm a Super Moderator johns0's Avatar
    Join Date: Jun 2002
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    The only time i had problem with ac3 files is that they were improperly encoded,when you load the file do you see 10 minutes of silence?If you do just delete that part.
    I think,therefore i am a hamster.
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  9. Yes I do. Exactly 10 minutes from an original .vob file. What you said sounds about right...it was the end titles only...wanted the soundtrack from the end credits. Forgot about that. Split .vob maybe. And yes did a silence scan and cut at the flags. All sorted. Thanks for the reply.
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  10. Member
    Join Date: Jul 2007
    Location: United Kingdom
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    I seem to have done that successfully with Audacity Thanks very much for the guidance and tool advice
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