How to Batch Process 768kbps DTS .m4a Audio Files to AC3 5.1ch 640Kbps

[askfriends]

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?

[KNON]

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

[sekininsha]

try this:

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

regards

[askfriends]

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.

[BartZLederman]

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/

[sekininsha]

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