Matroska QuickTime Component has been released

[Kurtnoise]

Any fans of Matroska and QuickTime lovers around here ?

MatroskaQT 0.1 (http://sourceforge.net/projects/matroskaqt/) : Preview release (only audio and video tracks supported).

[Sharktooth]

Any fans of Matroska and QuickTime lovers around here ?
However it's good for MKV to have a quicktime component just coz there are some millions of smarta$$es-wannabes that use quicktime on a daily basis...

[Blue_MiSfit]

No joke... Like every freaking post production house that uses Final Cut Pro... You should hear the zealots I work with talking about how great QuickTime is and how impressive their H.264 codec is.... You shoulda seen their faces when we did a side by side comparison of Apple H.264 (slow as molasses and bad quality) and x264 through ffmpegX (fast as lightning and great quality).

Still... There are some things that QuickTime does really well, just not any better than any other container.

At any rate, nice to be able to open Matroska files on Mac OS X without using a 3rd party player, should I ever need to :D

BTW.. does this quicktime component have an Intel native version, or is it PPC only?

~MiSfit

[Kurtnoise]

At any rate, nice to be able to open Matroska files on Mac OS X without using a 3rd party player, should I ever need to :D
VLC works fine on Mac OS...

BTW.. does this quicktime component have an Intel native version, or is it PPC only?
PPC only I think.



@Sharktooth : remove the "Yes" and the "No" from your quote please...

[bond]

does it include decoders? if yes, which ones?

if it doesnt include decoders, what decoders does it work with? qt's?

[yuvi]

BTW.. does this quicktime component have an Intel native version, or is it PPC only?
It's Universal, but Mac OS X only. If someone who knows how to compile stuff for Windows wants to look at it, I'll offer what support I can.

does it include decoders? if yes, which ones?

if it doesnt include decoders, what decoders does it work with? qt's?
It's just a parser; it uses installed QuickTime decoders for everything (e.g. XiphQT for Vorbis/FLAC, A52Codec for AC3, FFusion/DivX/XviD/3ivx/other for DivX-like codecs, etc.)

[bond]

It's just a parser; it uses installed QuickTime decoders for everything (e.g. XiphQT for Vorbis/FLAC, A52Codec for AC3, FFusion/DivX/XviD/3ivx/other for DivX-like codecs, etc.)ic, does it work with qt's internal codecs?

[SeeMoreDigital]

I thought Apple was moving toward an MPEG-4 AVC/AAC future for it's QuickTime (and iPod) players!

Given it's pretty pointless muxing say Sorenson 3 video and QD2 audio into MKV. What's the point of adding a QuickTime component for MPEG-4 AVC video and AAC audio?

[bond]

qt already includes an avc and aac decoder. my question was whether the mkv component is able to connect to them, so the user doesnt need to install a decoder for playing aac and avc in mkv

[yuvi]

qt already includes an avc and aac decoder. my question was whether the mkv component is able to connect to them, so the user doesnt need to install a decoder for playing aac and avc in mkv
Yes, using built-in decoders for AVC, AAC, MP3, Sorenson 3, etc works (though H.264 shouldn't work as well as it does.) One interesting thing that I've found is that some of QuickTime's problems playing H.264 seem to stem from the MP4 parser; in one case, I demuxed an AVC stream that worked fine in Matroska in QuickTime and remuxed via mp4box to MP4, and QuickTime gave a white screen trying to play the MP4.

Actually, speaking of including decoders, future plans include merging with Perian, which has similar aims as ffdshow for QT.

[Sharktooth]

That's probably due to the fact QuickTime mp4 parser doesnt support 64bit timestamps.

[bond]

That's probably due to the fact QuickTime mp4 parser doesnt support 64bit timestamps.hm iirc qt outputs an error message with such timestamps

[Prettz]

No joke... Like every freaking post production house that uses Final Cut Pro... You should hear the zealots I work with talking about how great QuickTime is and how impressive their H.264 codec is.... You shoulda seen their faces when we did a side by side comparison of Apple H.264 (slow as molasses and bad quality) and x264 through ffmpegX (fast as lightning and great quality).

Still... There are some things that QuickTime does really well, just not any better than any other container.

At any rate, nice to be able to open Matroska files on Mac OS X without using a 3rd party player, should I ever need to :D

BTW.. does this quicktime component have an Intel native version, or is it PPC only?

~MiSfit
Are these the same Mac-using types who were encoding stuff to share on the internet in MPEG-2 still just a couple years ago?

[travisbell]

Just curious, I have noticed .mkv files to play wicked slow compared to playing them in VLC (2.0 Ghz MacBook) and was wondering if there has been any progress on making things faster.

Any updates?

Thanks!

[SeeMoreDigital]

Just curious, I have noticed .mkv files to play wicked slow compared to playing them in VLC (2.0 Ghz MacBook) and was wondering if there has been any progress on making things faster.

Any updates?What stream formats are you referring to.... And what direct-show decoder filters are you using?

[travisbell]

I have a x264 (w/ AC3) .mkv video that plays perfectly fine in VLC, but when I open up QuickTime, plays around 5fps.

I know in the Readme.txt included with the .dmg, David says the following:

This goes into your Library/QuickTime folder.
Note that importing is still very slow.
Only audio and video tracks should work.

Thanks!

[SeeMoreDigital]

I have a x264 (w/ AC3) .mkv video that plays perfectly fine in VLC, but when I open up QuickTime, plays around 5fps.It's slow because QuickTime's AVC decoder is (most probably) the slowest AVC decoder for M$ O/S based PC's out-there....

Only Apple can improve the speed of their decoder. So if you require "decoding speed"... Don't use QuickTimes AVC decoder ;)

[yuvi]

Actually, I've found Apple's H.264 decoder to be slightly faster on my G4 PowerBook than libavcodec's, which afaik is the only alternative for non-x86 machines and is used by VLC. As for the question, Perian SVN can open Matroska files faster than MatroskaQT (though it takes about as long before they're really playable, I'm slowly working against QuickTime on that...) and now uses libavcodec's H.264 decoder instead of Apple's due to high profile support.

[foxyshadis]

Actually, I've found Apple's H.264 decoder to be slightly faster on my G4 PowerBook than libavcodec's,

I wonder if this is partly a PPC vs Intel issue. I know that QT is compiled for intel, but if the optimizations are all Altivec, it won't help.

[travisbell]

It's slow because QuickTime's AVC decoder is (most probably) the slowest AVC decoder for M$ O/S based PC's out-there....

Only Apple can improve the speed of their decoder. So if you require "decoding speed"... Don't use QuickTimes AVC decoder ;)

Ya... tis' true.

What's weird is I can take this, strip her down to a plain' ol' .mp4 and it plays fine in QT.. it's around 8mbps.

I dunno, kinda figured it was something to do with the container.

Thanks guys,