Selur's Little Message Board

Hi,

I am trying to change the speed of the audio file in an mkv.

I have done the manipulation like this :
BASE -> Video : Ignore
         -> Audio : Custom
AUDIO -> Speed Change : 25000 to 24000
           -> Adjust Speed
Output -> Format MKV
           -> Destination : Hybrid/Test.mkv
Job -> Start

Evereything seems to be fine. No error message.

I have this text in the debug text :

mkvextract started...
starting 2022-02-24@11_28_33_9210_01_audio@11:28:33.981 - /Users/alphaomegasprl/Movies/Hybrid/Test.mkv
"/Applications/Hybrid.app/Contents/MacOS/Mkvtoolnix.app/Contents/MacOS/mkvextract" tracks "/Volumes/Introuvables 2/Criterion/The Innocents (1961) Criterion VO (1080p x264 AC3).mkv" 1:"/Users/alphaomegasprl/Movies/Hybrid/iId_2_aid_0_lang_it_DELAY_-43ms_2022-02-24@11_28_33_9210_01.ac3"
2022-02-24@11_28_33_9210_01_audio finished after 00:00:03.221
finished...

created /Users/alphaomegasprl/Movies/Hybrid/iId_2_aid_0_lang_it_DELAY_-43ms_2022-02-24@11_28_33_9210_01.ac3 (109.971 MB)
ffmpeg started...
starting 2022-02-24@11_28_33_9210_02_audio@11:28:37.219 - /Users/alphaomegasprl/Movies/Hybrid/Test.mkv
"/Applications/Hybrid.app/Contents/MacOS/ffmpeg" -y -threads 8 -f sox -i - -c:a aac -strict -2 -b:a 128k -ar 48000 -channel_layout stereo "/Users/alphaomegasprl/Movies/Hybrid/iId_2_aid_0_lang_it_DELAY_-43ms_2022-02-24@11_28_33_9210_02.aac"
2022-02-24@11_28_33_9210_02_audio finished after 00:02:12.182
finished...

created /Users/alphaomegasprl/Movies/Hybrid/iId_2_aid_0_lang_it_DELAY_-43ms_2022-02-24@11_28_33_9210_02.aac (94.0273 MB)

The point is that I don't find this aac file of 94.0273 MB in the folder nor the Test.mkv file.

Thx for your help

Quote:I am trying to change the speed of the audio file in an mkv.

I have done the manipulation like this :
BASE -> Video : Ignore
-> Audio : Custom

That makes no sense you should set "Base->Processing->Video" to "passthrough" unless you only want the audio and not the video.

Quote:AUDIO -> Speed Change : 25000 to 24000
-> Adjust Speed

hmmm,... there is no 'adjust speed' option and 'Adjust pitch' is usually not what folks want, but you probably read the tool-tip and hopefully know what you want.

Can't really say more without a proper debug output. Read the sticky if you don't know how to create one.

I tried recreating your problem, by:

• starting Hybrid
  
• loading an mkv source
  
• setting 'Base->Processing->Video' to 'Ignore'
  
• setting 'Base->Processing->Audio' to 'Custom'
  
• enabling 'Audio->Base->Audio Encoding Options' (not changing the encoder since you didn't write anything about it)
  
• enabling 'Audio->Base->Audio Encoding Options->Filtering->Speed Change'
  
• changing 'Audio->Base->Audio Encoding Options->Filtering->Speed Change->to' to '24'
  
• enabling 'Audio->Base->Audio Encoding Options->Filtering->Adjust pitch' (even when I think it's a mistake, but that's what you wrote)
  
• adding the setting to the 'Audio Queue' by pressing 'Audio->Base->Add Current' (the '+'-sign)
  
• settings an .mkv output file under 'Base->Output File'
  
• generating the jobs for these settings by pressing 'Base->Add to queue'
  
• starting the processing by pressing 'Jobs->Queue->Start'
  

As a result, I got an .mkv file with an adjusted audio only stream in it.

Quote:I have this text in the debug text :

No this is some part of the log in the 'Log'-tab which starts with:
This log is only intended for user information. It should not be part of a bug/problem report!!

-> No clue what you really did,...

Cu Selur

Hi again !

 

I only wanted to change the speed of the soundtrack and not the images of the movies then I will remux the audio file with the movies.

Maybe it's quite stupid to do like that but with MKVToolNiw, I only arrive to change the FPS and not the the track file !

Feel free to suggest me another of doing it more cleverly !

I could do with an mka file from mkvtoolnix.

The sound is in aac.



What you desribe it's exactly what I did !

• starting Hybrid
  
• loading an mkv source
  
• setting 'Base->Processing->Video' to 'Ignore'
  
• setting 'Base->Processing->Audio' to 'Custom'
  
• enabling 'Audio->Base->Audio Encoding Options' (not changing the encoder since you didn't write anything about it)
  
• enabling 'Audio->Base->Audio Encoding Options->Filtering->Speed Change'
  
• changing 'Audio->Base->Audio Encoding Options->Filtering->Speed Change->to' to '24'
  
• enabling 'Audio->Base->Audio Encoding Options->Filtering->Adjust pitch' (even when I think it's a mistake, but that's what you wrote)
  
• adding the setting to the 'Audio Queue' by pressing 'Audio->Base->Add Current' (the '+'-sign)
  
• settings an .mkv output file under 'Base->Output File'
  
• generating the jobs for these settings by pressing 'Base->Add to queue'
  
• starting the processing by pressing 'Jobs->Queue->Start'
  

As a result, I got an .mkv file with an adjusted audio only stream in it.


And As a result I have nothing ! I am a little bit Clumsy !



I Have attached the debug log

Quote:I only wanted to change the speed of the soundtrack and not the images of the movies then I will remux the audio file with the movies.

Which is what video passthrough would do it would pass through the video from the input to the output,...

I see the problem. Hybrids job processing stumbles over the title of you audio stream.
-> Remove the pipe symbol ( | ) in the audio title and Hybrid should be able to process the file correctly.

Hybrid sees:
and wrongly splits the call at the pipe symbol since it assumes what it sees are two calls.

I will try to find some time over the weekend to fix this until I create a fix for this renaming the title is the only way to use Hybrid on such files.
(I know how and where I need to fix it, I just need the time to do it and compile a new dev version. )

Cu Selur

It is perfectly Working now !!!!
THANKS A LOT for your help andd for this program !