[Matroska] best audio format ?

[Sirber]

Will Real codecs be in standarts? :confused:

[rjamorim]

Originally posted by Sirber
Will Real codecs be in standarts? :confused:

I don't think that is likely, but I'm definitely no Matroska spokesman.

You see, the standards, as I understood them, are mostly a certification for hardware players. MPEG has a very clear hardware licensing portfolio. I don't know of anything like that from Real (I.E, licensing programs for hardware implementations of their codecs). So, using Real codecs in this standard profile would be risky at best.

[ChristianHJW]

Lets be realistic, especially with the ongoing support and usage of OGM, its very unlikely that any hardware player manufacturer might be interested in implementing MKV support in hardware players.

So all the speculation about hardware profiles is not so very much interesting right now IMHO. Our plans for profiles were mainly directed on what next generations hardware units will support anyhow, and that is MPEG4 video and AAC audio from our perspective. If some manufacturers will implement RV9 decoding in their units, we have no problem creating a new profile to serve them best possible.

About profiles with lossless audio, this was mainly targeted onto mf's new, alternative blue laser DVD standard called S-DVD ;) ....

[Tuning]

I think the most suitable lossy audio format would be AAC,Possibly He-AAC.This audio compression has real advantage over most of the lossy ones.U can have great sounding 5.1He-AAC @ 80kbps.

[Lobuz]

So what's the progress with lossless codecs ( APE,FLAC, .. + CUE)? I've heard that Matroska is for all formats but suddenly APE is not good enough? It's getting popular in net so why don't You want to use it?

Regards
Lobuz

[ChristianHJW]

FLAC is working fine now already, thanks to jcsston's FLAC encoder filter. Its a bit of a pain to have to use it from Graphedit, but it definitely works. Dont know about APE, somebody had to clarify if their licensing does allow to make a DShow based encoder filter or not.

I am working on a Guide right now how to pack a complete MusicCD into one single MKA file, but it seems there are some devs in the matroska team who would like to have this feature more standardized ( like what image compression to use for the covers, etc. ) so that players can support it easier. Let's see what the outcome of this discussion will be.

[aaar9800]

There is an APE DS filter

look here:

http://dsp-worx.de/index.php?pg=projects&tid=18

[raistlin2k]

Anybody tried to use two 5.1 Ac3-streams inside an MKV-file?

Did so, the resulting file seems somehow broken:
after changing the audio-stream or jumping around in the timecode the sound is gone!!!:scared:

That's the case with ac3filter.ax & with IVI-Audio-Decoder.
Second one produces moreover noise, I guess because it gets loaded several times, once for each stream.

Please tell me if this is working for you.
I tried already on two machines, same results:o :(

Raist

[Hiro2k]

Originally posted by ChristianHJW

I am working on a Guide right now how to pack a complete MusicCD into one single MKA file, but it seems there are some devs in the matroska team who would like to have this feature more standardized ( like what image compression to use for the covers, etc. ) so that players can support it easier. Let's see what the outcome of this discussion will be.

Neat, I would like to see PNG as the standard for images in mka cd's. Also what audio formats would there be in this standard? Ogg, AAC, FLAC, MP3, DTS?

[mfluder]

Originally posted by raistlin2k
Anybody tried to use two 5.1 Ac3-streams inside an MKV-file?

Did so, the resulting file seems somehow broken:
after changing the audio-stream or jumping around in the timecode the sound is gone!!!:scared:

That's the case with ac3filter.ax & with IVI-Audio-Decoder.
Second one produces moreover noise, I guess because it gets loaded several times, once for each stream.

Please tell me if this is working for you.
I tried already on two machines, same results:o :(

Raist
Just tried this and it works great. Though it was the same 5.1 AC3 file muxed twice as I currently don't have anything else to test with. Switching the streams works great in both MPC and Zoom Player and there hasn't been any problem that you mentioned. For muxing latest mkvmerge (0.7.7) was used and for playback latest MatroskaSplitter and AC3Filter.

mfluder