Posts: 40
Threads: 12
Joined: Jan 2021
Hi Pros and Amateurs!
Need a little help here :
I have a movie in two different versions:
#1: 4K ,23.976 fps ,ac3 384 kbps
#2 : 1080p ,24 fps ,eac3 640 kbps
How can i mux the 640 kbps audio in the 4K mkv container?
I tried a simple mux-in and the audio gets desynced of course...
Any help would be nice!
Posts: 10.981
Threads: 57
Joined: May 2017
Simple remux would only work if:
a. the length of both versions differs by a factor of 24/23.976, and
b. the content of both version (so no different cuts, etc.)
is the same.
Assuming that the content is the same, but the playback length differs by the 24/23.976 and you use .mkv as output container, one could do the remux using MKVToolnix GUI and adjust the length by settings a corresponding 'Strech by' info in the properties of the audio clip.
Assuming that the content is the same, but the playback length differs by the 24/23.976 and you do not use .mkv as output container, the only solution would be to reencode the audio while setting "Audio->Base->Filtering->Speed change" accordingly.
If the content isn't exaclty the same your only option is using a full fledget NLE and and start editing the audio,... (Hybrid can't help there)
Cu Selur
Posts: 40
Threads: 12
Joined: Jan 2021
Thank you!
Will try ASAP!
