quicktime...

[kvs]

may I ask why there is so little talk about
quicktime here.. ? and why it isn't included
in doom's great codec comparison? is there
something really really bad about this format
that I ought to know of :sly:

dunno.. it can't be all bad as the trailers I
have downloaded in this format look okay, but
can't really conclude anything from that, heh..

version 6 will probably come soon, if the lisence
thing gets sorted, and well... it's gonna be mpeg-4
and all, and kind of looks interesting... if I first
have to pay 30 bucks for divx, I might as well look
at quicktime 6 when (if:rolleyes: ) it arrives...

comments?

[Koepi]

Yupp, I have comments.

Quicktime never a good and flexible format. And it always needs an extra player on every platform.

Too bad that mp4 is quicktime.

Koepi

[kvs]

but it can't be worse than microsoft's offering,
at least when it comes to flexibily? :devil:

mmm... anyone tried ripping a dvd with quicktime?

anyway, thought it was odd - a search on quicktime
gave me like nothing. I had at least expected that
someone had discussed this before? but maybe it's
just another bad search engine (although it seems
to be good, at least a lot better than some other
search engines I've tried ehem :rolleyes: )

one more thing... is it a codec u can use within
virtualdub? I can agree it's limiting if it can't...

edit: it won't probably need a seperate player in the
future if it is like fully mpeg-4 compatible, right??

[Neo Neko]

The trick is Quicktime is not a codec. It is a format. A format that up untill recently did not have any codecs capable of really ripping DVDs. Quicktime is not to bad, but right now it is just behind the curve. I am anxiously awaiting the release of QT6 myself. I can't wait to play with it.

[yokem55]

I thought that the sorensen codec (quicktimes primary video codec) was the first major mpeg-4 codec to be implemented....

[maguirer]

The Sorenson codec(s) that come with QuickTime are actually called "Sorenson Video" and "Sorenson Video 3", and no they're not mpeg-4. Sorenson does have an MPEG-4 codec, but it's completely separate and I don't know that much more about it.

[Neo Neko]

I think the main lack of flexibility in quicktime is that the main codecs of choice were only avalible in quicktime. Codecs like sorrenson. WMP and many other players can open and read QT. And as long as there is a VFW counterpart of the quicktime codec used then it can be played. There is no Sorrenson VFW codecs though. Hence all videos coded with it are only playable in QT. QT6 is gonna be heavy in MPEG4. And guess what! We have MPEG4 VFW codecs! So once again it will become more useable like in the days of Indeo Quick Time!

[maguirer]

Yes, you're right about that. It's definitely going to be exciting times once QT6 rolls around. I have a feeling MP4 is going to be the format of choice across the board...

[Neo Neko]

Indeed! But this only increases the urgency and need to stop using codecs like Divx3. QT6 will be one of the first apps, but tons more in the future will be comming down the pipleine supporting ISO-MPEG4(Not Divx3). It should have no problem with Divx4/5 and Xvid as well as their own MPEG4 codec.

The only wa arround this I could see is if someone could write an app that would go through a Divx3 encoded video and take out all the nonstandard Microsoft crap and bring it back to ISO.

[movmasty]

maybe m$ mpg4 wasnt ISO-comp cause,really, avi cant be ISO-comp ??

[Neo Neko]

MSMPEG4 was never meant for use in AVI. Gej and the others hacked it for that. But Microsoft made it and restricted it for ASF and WMV support. So AVI had nothing to do with it. It is simply because everything that Microsoft makes must break as many standards as possible. That way you are tied to their infrastructure and the company. You don't need Microsoft to start out with. But if you give em a chance they will make you dependant on them for better or mostly worse.

[maguirer]

I admit it's probably still too early to tell, and probably won't know until QT6 comes out when things will hopefully be solidified, but what determines whether an MP4 file is ISO-compliant or not?

Is it up to the codec, the encoding software, or the user, to make ISO compliant MP4s?

Anxiously awaiting the arrival of QT6...

[Neo Neko]

ISO - International Standards Organisation
Based in Sweeden. They along with the IETF IEEE and several other standards boddies set computer and technology standards. They describe what something does and how it should do it. That way everything that adhers to the standards will work flawlessly with anything else that uses those standards. Standards mean that anyone can do it and Microsoft can not control it. If Microsoft can not control it that means that competition and constantly improving implementations will be present. If this were the case Microsoft could not survive. That is why Microsoft always rushes to be the first with a buggy non-standard implmentation. That way you start using their stuff, and come to rely on it. Microsoft products over all are never as good as most other products. But they use that strategy to crush superior products and standards time and again.

[maguirer]

Was there an answer to my question in there, 'cause I must've missed it... :)

I'll put it differently. Let's say I have an ISO-compliant MP4 file. What changes can be made to file, while still maintaining its ISO-compliant status, or what changes to the file would make it cease to by an ISO-compliant MP4?

Conversely, say I have a non ISO-compliant MP4 file (if there is/will be such a thing, and believe me with all the hackers around it won't take long for such files to be floating around), what can I do to it to make it ISO-compliant?

Do you, or anyone else know the answers to these questions, or is it still too early to know for sure...?