.mkv AUDIO conversion 25 > 23.976 fps

[ukb008]

Hi

Please tell me how to convert an .mkv AUDIO file demuxed from a 25 fps source for muxing with a 23.976 fps video.

BeSweet does not accept matroshka audio as input.

Regards.

[kartikoli]

Hi

Please tell me how to convert an .mkv AUDIO file demuxed from a 25 fps source for muxing with a 23.976 fps video.

BeSweet does not accept matroshka audio as input.

Regards.

convert audio to mp3/aac format and use audecity to change the length of the audio

chk this post for more detail instructions

http://forum.doom9.org/showthread.php?p=1405794#post1405794

[ACrowley]

Hi

Please tell me how to convert an .mkv AUDIO file demuxed from a 25 fps source for muxing with a 23.976 fps video.

BeSweet does not accept matroshka audio as input.

Regards.

You can mux the Video to 25fps with mkvmerge using Timecode. Create a .txt File with :
# timecode format v1
assume 25

So you can use your Audio File untouched

[ukb008]

Hi, Mr kartikoli

Thanks for your time and reply. Now that you've mentioned it, the process does not seem all that difficult!

Regards.

* * * * * * * * * *

You can mux the Video to 25fps with mkvmerge using Timecode. Create a .txt File with :

# timecode format v1
assume 25

So you can use your Audio File untouched

Hello Mr Crowley:

It's interesting, and appears quite safe and easy. MKVmerge Help, however, says this:

Tags: Normally mkvmerge will derive the timecodes for each frame from the source file, but it can also read and use timecodes from an external text file whose name you can specify here. This feature is a very advanced feature. Almost all users should leave this entry empty.

Maybe you can elaborate the method a wee little bit into a mini-tuto? A lot of people will be benefited, I'm sure.

Thanks and regards.

[sekininsha]

For audio, with eac3to and command "slowdown", you can use one of the gui

http://forum.doom9.org/showthread.php?t=125966

http://forum.doom9.org/showthread.php?t=145574



It's interesting, and appears quite safe and easy. MKVmerge Help, however, says this:
otherwise if the video 23,976 is mkv,load the mkv in mkvmerge with "add", and separately in a text file type:

# timecode format v1
assume 25.000

Then in the "tracks" of the program select the video stream and the option "timecodes" loaded the text file created, disable the original audio mkv and and save the new mkv with "start muxing".

[ukb008]

RESULTS!

I did exactly what ACrowley and sekininsha has advised. The result was GOOD, although not entirely what I had subconsciously expected!

I had an audio track (taken from a 25 fps movie) and a 23.976 video track. The process actually changed the 23.976 video track to a 25 fps video track and muxed it with the audio. My subconscious expectation was wrong, and I should have known, and Mr Crowley had said this ("So you can use your Audio File untouched").

But now, to learn how to do this keeping the video fps intact, I need to do what kartikoli has advised ("convert audio to mp3/aac format and use audecity to change the length of the audio").

I'll report back.

All of you have my regards.

[sekininsha]

But now, to learn how to do this keeping the video fps intact, I need to do what kartikoli has advised ("convert audio to mp3/aac format and use audecity to change the length of the audio").


try changing the audio from 25 to 23.976 with eac3to and the GUI UsEac3to ..

For audio, with eac3to and command "slowdown", you can use one of the gui

http://forum.doom9.org/showthread.php?t=125966

http://forum.doom9.org/showthread.php?t=145574

[ACrowley]

try changing the audio from 25 to 23.976 with eac3to and the GUI UsEac3to ..

but now its a Timestretch/Resampling+reencoding

He ca simply mux the Audio to the matching Video Framerate with mkvmerge and Timecodes .txt, so no reencoding is required. Thats what i mean.
Ofcourse the VideoFramerate is not original anymore. Otherwise use eac3to s Timestretch