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  1. Does anyone know how I can use ffmpegx to convert a mp2 file to an ac3? I for the life of me can't figure it out. Is it even possible? Thanks to anyone who can lend me a hand.

    saltydog4791
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  2. Member
    Join Date
    Jul 2001
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    usa
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    off hand i'm not sure, but would going from mp2 to aiff or wave then to ac3 help???
    pants on, pants off, pants the floor.
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  3. that'll work too. basically I just need some way to do mp2 to ac3 all from the command line to include in a shell script that I am working on. there must be a way. windoze has besweet. what do we have? batch encoding in A.Pack stinks. it's not very convenient. I need something I can shell script. does anyone out there know the way?

    saltydog4791
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  4. Member Thargok's Avatar
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    Nov 2001
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    United States
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    ffmpegx
    videoassthrough video; deselect encode video
    audio: AC3

    Select file, run
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  5. well, I have tried that and it didn't work for me, but I did do some investigating. I echoed the command line to see what the terminal was doing.

    It would run the following command--

    printf "Encoding started on " ; date ; /Applications/ffmpegX.app//Contents/Resources/ffmpeg -i /Volumes/XXXXXX/test.wav -y -vn -f ac3 -acodec ac3 -ab 192 -ar 48000 -ac 2 -map 0.1:0.0 -benchmark /Volumes/XXXXXX/test1.ac3 ; printf "Encoding completed on " ; date ; printf "\a\n"

    This resulted in a bus error for some reason, but when I took out the -map 0.1:0.0 the encoding worked. Can anyone explain this map parameter because I don't understand what it is and why it would cause the command to fail.

    I am getting close to figuring this thing out.

    saltydog4791
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  6. Member
    Join Date
    Jan 2003
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    The Dark Side of the Moon
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    Well, at least you did more than I would have been able to. I would have had no clue to delete -map out of the command.

    That's pretty cool there.

    Sorry! That didn't really answer any question!
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