RMVB files converted to MKV container

[Simon88]

RMVB files converted to MKV container does not seem to play correctly. The audio "cook" is incompatible says VLC, but playing the original RMVB works. Converting the file to a AVC loses too much quality, so it's not an option.

Here's the error message:

Code: Select all

No suitable decoder module: VLC does not support the audio or video format "cook". Unfortunately there is no way for you to fix this.

Video plays fine though..
Does MKV change the "cook" audio codec ID to a unrecognizable value? If so, how do I tell VLC to decode it as if it's a RA (cook) stream.

Thanks!

[TypX]

Can you upload a sample?

[VLC_help]

And did you test with VLC 1.2.0 nightly builds?

[Simon88]

I've tested using VLC 1.3.0-git and it's still has the same error message. It appears to be a mkv 5.2.1 issue where the cook audio is NOT interleaved correctly. Converting the cook audio to something else, aac/mp2/ac3/etc fixed it.

Searched the internet and it's a known issue w/ mkv and RA cook files it seems. Apparently the RMVB container interleaves "cook" audio files at very specific points in the audio data stream.

[Jean-Baptiste Kempf]

VLC does not support cook 5.1 in mkv correctly, indeed.

[Simon88]

Logically, I'm thinking VLC should support "cook" audio without issues, since the only thing different is the container. "cook" in a RMVB container works fine but does not work in a MKV container. I'm thinking perhaps the media splitter needs a "very" slight change or so... or perhaps an additional track "id" needs to be added to tell VLC it is simply a cook audio file.

[Jean-Baptiste Kempf]

Sample?

[Simon88]

Hi Jean,

RMVB are REALLY popular in ASIA, I think because they have cheap hardware capture devices that creates it and it provides excellent quality at very low bitrate. Here's an old Chinese series w/ left channel one language and right channel another language.

It's located at:
http://www.filesonic.com/folder/12221501
They are about 100MB a piece/45 min.

I downloaded the 1st one and converted it to MKV and VLC wasn't able to play it. The original RMVB played perfectly, though.

Simon

[TypX]

I'll check that (provided I can download the files).