What program can batch convert JUST audio of .mp4 files then re-mux?

[Whitezombie455]

Okay, so I made a mistake and I need some help. I have a bunch of .mp4 video files with an incorrect audio format. I need the audio portion of all the files to be converted to a different format. Unfortunately, I no longer have the source files so this is the only option.

Which program can I use to batch convert just the audio portions of .mp4 files then re-mux with the video streams without re-encoding the video?

P.S. I know I could just do this manually but there are a lot of files...

[racer-x]

ffmpeg

[Baldrick]

And a guide https://forum.videohelp.com/threads/356314-How-to-batch-convert-multiplex-any-files-with-ffmpeg

[transporterfan]

If you want a gui

xmediarecode
Drag files in
Select each individually and:
video>copy
Audio>convert

[TorBru]

What audio format do you need?

You could use ffmpeg with ffqueue (setup first). Copy preset block below:

//8RAQAAeNpFjc1qw0AMhO8Gv4MfQDSyifMHOmySW6GHhp5CMJ
u14iyJva7/qN++8hITECPQjL451w233F3CwOZ0+loMx592r9T+
UxdKGRRRRGFQ6ZLpm8v+Lxpszg4ipQ4RV8blHOk+ty4MvJFNF0
PG1WMYPHjMbo28tgQACEucU7+9ftpuJIR1KsZqO7lLkS36nEgs
YU9+IZ/2OrhMayOts9PojilONhALfz6+2RtBdPe+vLbkiVBXhd
8pQjLtBFLpAcSdnw9E/AdzrlCA

Paste it into ffqueue's preset manager. Now drag & drop your files to the main window, batch make opens. Tick audio & video, define a destination folder for converted videos, select "Remux video, AAC encode audio" under preset (the preset you copy-pasted from above), and click Make jobs. FFQ will now create jobs for your files and send you back to the main window. Now you can click start and conversion begins!

Video will be remuxed and audio will be encoded in 128k AAC.

[Whitezombie455]

I need it be .aac codec with AAC-LC setting. I'll give xmediarecode a try first and if not I'll give ffmpeg a try. I'll let you know if I can get it to work. Thank you for the replies!

[Whitezombie455]

What audio format do you need?

You could use ffmpeg with ffqueue (setup first). Copy preset block below:

//8RAQAAeNpFjc1qw0AMhO8Gv4MfQDSyifMHOmySW6GHhp5CMJ
u14iyJva7/qN++8hITECPQjL451w233F3CwOZ0+loMx592r9T+
UxdKGRRRRGFQ6ZLpm8v+Lxpszg4ipQ4RV8blHOk+ty4MvJFNF0
PG1WMYPHjMbo28tgQACEucU7+9ftpuJIR1KsZqO7lLkS36nEgs
YU9+IZ/2OrhMayOts9PojilONhALfz6+2RtBdPe+vLbkiVBXhd
8pQjLtBFLpAcSdnw9E/AdzrlCA

Paste it into ffqueue's preset manager. Now drag & drop your files to the main window, batch make opens. Tick audio & video, define a destination folder for converted videos, select "Remux video, AAC encode audio" under preset (the preset you copy-pasted from above), and click Make jobs. FFQ will now create jobs for your files and send you back to the main window. Now you can click start and conversion begins!

Video will be remuxed and audio will be encoded in 128k AAC.

Well I couldn't figure out xmediarecode so I gave ffmpeg with ffqueue a try and so far it is working perfectly! Very easy to understand and use. It was a lot easier then what is above here. I couldn't find anywhere to paste the preset block so I just went in and created a preset and it was really easy to make one. Thanks for the help!

I'll post back if I encounter any problems.

[TorBru]

Great that it went smoothly! The copy-paste preset is quite simple - just select the whole base64 block (from "//" to "CA" - both inclusive) , and press [CTRL]+[C] to copy. Open ffqueue, open preset manager and click the "Paste" button. But since you had no problems creating a preset yourself it does not matter

[Joshua_Gomeh]

What audio format do you need?

You could use ffmpeg with ffqueue (setup first). Copy preset block below:

//8RAQAAeNpFjc1qw0AMhO8Gv4MfQDSyifMHOmySW6GHhp5CMJ
u14iyJva7/qN++8hITECPQjL451w233F3CwOZ0+loMx592r9T+
UxdKGRRRRGFQ6ZLpm8v+Lxpszg4ipQ4RV8blHOk+ty4MvJFNF0
PG1WMYPHjMbo28tgQACEucU7+9ftpuJIR1KsZqO7lLkS36nEgs
YU9+IZ/2OrhMayOts9PojilONhALfz6+2RtBdPe+vLbkiVBXhd
8pQjLtBFLpAcSdnw9E/AdzrlCA

Paste it into ffqueue's preset manager. Now drag & drop your files to the main window, batch make opens. Tick audio & video, define a destination folder for converted videos, select "Remux video, AAC encode audio" under preset (the preset you copy-pasted from above), and click Make jobs. FFQ will now create jobs for your files and send you back to the main window. Now you can click start and conversion begins!

Video will be remuxed and audio will be encoded in 128k AAC.

Thank you.

Can you please post a preset to remux the audio into uncompressed wav?

[TorBru]

That is not remux, but convert.. Use preset above, double-click it in the preset manager, go to audio page, select "pcm_s16le" as codec, clear bit-rate field, and you're done.

///3AAAAeNpFjN0KgkAQhe8F38EHGGoUtR/Yi9XuogiiqwjRdb
Ml/3JV8O0blyQYzsA53zn3tpNa9g/bUjm7ntfj4aYjzqNjWnAu
kIQzZlt1WkkWN+3kjCqXDThumKneucQnJx1y1diW8RPR5FIwQa
BtveWUPDsqagYACD4u1GdIS9VPDGETUBDu5tQn2aHhSFyCzfJv
shVVot2wlIv939gS2r+GKtPMNKGtC/MDBG/+HgS0B4h7cytE/A
LTpUfk

Please note that ffmpeg does not allow PCM in the MP4 container, use MKV instead.

[Joshua_Gomeh]

Thank you, Torben.

What tool to create MKV files with PCM audio?

[TorBru]

FFqueue.. In the job editor you can simply change the extension of the output-file to .mkv instead of .mp4 and you're in business!

[Joshua_Gomeh]

Thanks, however it doesn't work. The 2.4 Gb xxx.ts file was converted in less than a second to 123.7Kb xxx.mkv file, which is unplayable. Probably only a certain mkv header was created. The xxx_log.htm says:

Starting FFMpeg 2015/24/01 21:27:37 with command: -hide_banner -i "D:\Movies\Music\Symphonies\×‘×¨× ×¨×“ ×”×™×™×˜×™× ×§ - ברלין ×¤×™×œ×”×¨×ž×•× ×™×§ - הר×�×©×•× ×” של גוסטב מהלר.ts" -map 0:0 -map 0:1 -c:v copy -c:a copy "D:\Movies\Music\Symphonies\×‘×¨× ×¨×“ ×”×™×™×˜×™× ×§ - ברלין ×¤×™×œ×”×¨×ž×•× ×™×§ - הר×�×©×•× ×” של גוסטב מהלר.mkv"

[h264 @ 00000000002ebe40] mmco: unref short failure Last message repeated 1 times Input #0, mpegts, from 'D:\Movies\Music\Symphonies\×‘×¨× ×¨×“ ×”×™×™×˜×™× ×§ - ברלין ×¤×™×œ×”×¨×ž×•× ×™×§ - הר×�×©×•× ×” של גוסטב מהלר.ts': Duration: 01:02:59.85, start: 10.000000, bitrate: 5591 kb/s Program 1 Stream #0:0[0x1011]: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc Stream #0:1[0x1100]: Audio: ac3 ([6][0][0][0] / 0x0006), 48000 Hz, stereo, fltp, 384 kb/s Output #0, matroska, to 'D:\Movies\Music\Symphonies\×‘×¨× ×¨×“ ×”×™×™×˜×™× ×§ - ברלין ×¤×™×œ×”×¨×ž×•× ×™×§ - הר×�×©×•× ×” של גוסטב מהלר.mkv': Metadata: encoder : Lavf56.15.103 Stream #0:0: Video: h264 (H264 / 0x34363248), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 25 fps, 1k tbn, 90k tbc Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, stereo, 384 kb/s Stream mapping: Stream #0:0 -> #0:0 (copy) Stream #0:1 -> #0:1 (copy) Press [q] to stop, [?] for help [matroska @ 00000000063b06e0] Can't write packet with unknown timestamp av_interleaved_write_frame(): Invalid argument [matroska @ 00000000063b06e0] Can't write packet with unknown timestamp

frame= 5 fps=0.0 q=-1.0 Lsize= 124kB time=00:00:00.04 bitrate=25350.8kbits/s

video:161kB audio:2kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown Conversion failed!

FFMpeg exited 2015/24/01 21:27:37, running time 00:00:00.160

Successfully completed with 1 lines of statistics!

The strange characters are because of the name of the xxx.ts file is in Hebrew.

[TorBru]

You are using a preset that remuxes both audio and video unchanged to the output. If you need to convert audio to PCM, please select the preset provided earlier (you need to select it in the job editor).

[Joshua_Gomeh]

Thanks, however it doesn't work.

I used the first preset, changed audio to PCM:

[preset]

id=SN/vDUsBAABKagAAc0gAAA==

name=Remux video, PCM encode audio

video_codec=copy

key_frames=,,,0,40

video_quality=0,75,0,69,0,44,0,90,0,40,0,10

audio_codec=pcm_s16le

audio_rate=128,1,,,

audio_quality=0,80

thumbs=0,0,1,png,0,1,50,20,1,2,5,10,00:00:00.000

FFQueue gives me an error message:

av_interleaved_write_frame(): Invalid argument

[matroska @ 0000000004cd00a0] Can't write packet with unknown timestamp

frame= 5 fps=0.0 q=-1.0 Lsize= 124kB time=00:00:00.04 bitrate=25367.2kbits/s

video:161kB audio:6kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown

Conversion failed!

FFMpeg exited 2015/24/01 21:53:00, running time 00:00:00.180

Successfully completed with 1 lines of statistics!

[TorBru]

In ffqueue's job editor please try to modify the FFMpeg command line to:

-fflags +genpts <%inputs%><%preset%><%output%>

[Joshua_Gomeh]

Thank you,

I did it but got the same error message.

[TorBru]

Dunno what to do then. Seems like it is a known issue:

https://trac.ffmpeg.org/ticket/1979

[Joshua_Gomeh]

From the above link it seems that it works with ffmpeg in command line.

Can you please suggest a command line for my needs?

Thank you.