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  1. Hello;
    I have got around 100 .m4a audio files having DTS 768kbps but i cant play them in my led tv bcoz it doesnt support it.
    So i want to convert them to 5.1ch 640kbps ac3.
    MeGui only allows to process single file at a time so it will take a lot of time to do so.
    Any way/software to batch process all files at once?
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  2. hi, there are 2 possible solutions,
    [1] convert [dts] .m4a → ac3 "losing quality"
    [2] change container [dts] .m4a → [dts] .mka "without loss of quality"

    using "XMEDIA RECODE"

    I had a similar problem, and it worked for me, just changing container m4a → mka

    but it depends on your tv,

    You could try the method [2] and if it doesn't work, then [1]

    [for the test choose only one file]
    XMR → Method [2] "m4a → mka"
    1.add audio to XMR
    2. "format" tab
    -format = MATROSKA AUDIO
    3. "audio" tab
    -mode = copy
    4.add to queue
    5.encode

    If the MKA file plays on tv, then you would just have to convert all the audios.
    1.add all audios
    2. keyboard shortcut → "CTRL + A"
    and continue steps from "2."

    XMR → Method [1] "m4a → ac3"
    1.add all audios
    2. keyboard shortcut → "CTRL + A"
    3. "format" tab
    -format = AC3
    4. "audio" tab
    -mode = convert
    -channels = 5.1
    -bitrate = 768
    4.add to queue
    5.encode
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  3. try this:

    for %%a in (*.m4a) do ffmpeg -i %%a -c:a ac3 -b:a 640k -center_mixlev 0.707 "%%~na.ac3"

    regards
    責任者-MDX
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  4. Originally Posted by KNON View Post
    hi, there are 2 possible solutions,
    [1] convert [dts] .m4a → ac3 "losing quality"
    [2] change container [dts] .m4a → [dts] .mka "without loss of quality"

    using "XMEDIA RECODE"

    I had a similar problem, and it worked for me, just changing container m4a → mka

    but it depends on your tv,

    You could try the method [2] and if it doesn't work, then [1]

    [for the test choose only one file]
    XMR → Method [2] "m4a → mka"
    1.add audio to XMR
    2. "format" tab
    -format = MATROSKA AUDIO
    3. "audio" tab
    -mode = copy
    4.add to queue
    5.encode

    If the MKA file plays on tv, then you would just have to convert all the audios.
    1.add all audios
    2. keyboard shortcut → "CTRL + A"
    and continue steps from "2."

    XMR → Method [1] "m4a → ac3"
    1.add all audios
    2. keyboard shortcut → "CTRL + A"
    3. "format" tab
    -format = AC3
    4. "audio" tab
    -mode = convert
    -channels = 5.1
    -bitrate = 768
    4.add to queue
    5.encode
    Thank you so much, it will definitely solve my problem.
    BTW first one option will not work for me bcoz i want to downgrade 768kbps to 640kbps or below as DTS is not supported by my LED TV.
    So i just converted it to .mka ac3 codec and changed bitrate to 640kbps, havnt tried in TV yet but im sure will solve the problem.
    Thanks again.
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  5. I also use the FFMPEG solution, but if you don't like command lines look at the post I just did about downloading YouTube videos.

    Any Video Converter has a GUI and will convert audio as well as video.

    https://www.any-video-converter.com/products/for_video_free/
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  6. XMR → Method [1] "m4a → ac3"
    1.add all audios
    2. keyboard shortcut → "CTRL + A"
    3. "format" tab
    -format = AC3
    4. "audio" tab
    -mode = convert
    -channels = 5.1
    -bitrate = 768
    4.add to queue
    5.encode
    責任者-MDX
    Quote Quote  



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