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27th January 2004, 21:08 | #1 | Link | ||||
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3ivx D4 4.5.1 is out and the 3ivx store is open
3ivx D4 4.5.1
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the store offers the following for private/home users: Quote:
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Cu Selur |
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27th January 2004, 21:45 | #2 | Link |
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great news!!!
now we only need support for adding chapters and subs (compliant to the nero way) via the 3ivx muxer
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28th January 2004, 10:23 | #3 | Link | |
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tiki4 P.S.: I will test the new release later today. Good luck to 3ivx. |
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28th January 2004, 11:43 | #4 | Link | |
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hm i never tried the subs (nero simply uses the vobsubs directly from the dvd) but afaik gabests vsfilter already supports decoding these, so it wouldnt be a big problem to decode these in any dshow based player too
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28th January 2004, 12:50 | #5 | Link |
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Hm. O.K. for the chapters then I guess, but AFAIK the subs are just 'attached' in some way to the MP4. Nothing like BIFS. This sounds to me a little like 'circumventing' the standard. I still think such things should be done the 'right' way in the first place in order to get wider acceptance for the format.
The reason for my opinion is, that I still hope for hardware support for MP4. An MPEG4 compliant DVD player that plays only AVI sound to me like a DVD player that only plays MPEG2 elementary streams Well, that's just my opinion... tiki4 |
28th January 2004, 12:57 | #6 | Link | |
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the mpeg-4 standard allows the addition of non mpeg-4 complaint streams to the mp4 container by using so called private track ids (that way its now already possible to add vorbis and vobsubs to mp4) so to say its possible to add non standard complaint streams in a standard compliant way for the chapters nero uses a feature of mp4 called user space, which allows to attach anything you want (ie pictures (cd covers), tags aso...) both ways arent really breaking the mp4 files, they will simply be ignored if a player doesnt explicitely supports them (but everyone is also able to support them if wanted, as 3ivx did with the chapters if i see it right)
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28th January 2004, 14:06 | #7 | Link |
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Unknown audio trackers are not exposed at all by the splitter, so even if someone were to come up with a QDesign Audio Decoder, it simply won't work.
Another nice splitter feature would be to allow disabling of non audio/video/sub tracks (such as still jpeg images used in some trailers). |
28th January 2004, 14:11 | #8 | Link |
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O.K., I got it.
Nevertheless, I think, that such constructs in user space of MP4 will not be supported when it comes to hardware devices. So, sorry for complaining in the first place, but your MP4Menu and the gpac implementation look much more promising to my eyes. I can't really understand why the industry takes so long to come up with some real MP4 solutions (featuring the interactive features of MPEG4). I will be more patient from now on. tiki4 |
28th January 2004, 14:22 | #9 | Link | |
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in contrary i also think that the bifs way is the better one and offers much more possibilities (ie dvd menus) but the problem is that bifs is really hard to implement in dshow (and most players use dshow), enviviotv is still very limited so till someone comes up with an automatic dvd -> mp4 tool (with menus) its maybe too much hassle to support bifs just because of subs and chapters
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28th January 2004, 17:17 | #10 | Link |
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Well, I think companies that sell MPEG4 related software don't try to implement it yet, because there is no hardware support, and companies selling MPEG4 hardware don't support it, because there is no software available. Well, what is to do?
tiki4 Btw. we shouldn't hijack the 3ivx thread with that rather philosophical discussion. So, sorry to the 3ivx fellows. |
28th January 2004, 21:30 | #11 | Link | |
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The big problem is its impossible to programatically automatically map from a QT audio fourcc to a windows WAVE ACM 2cc Essentially, we have to manually pick new 2ccs for each 4cc we choose to support AAC is using 0xFF AMR is using 0xFE
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28th January 2004, 21:38 | #12 | Link | |
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BIFS does not automatically solve the chapter problem, although it may give you a way to implement a chapter menu, it doesn't provide a programatic way that a player can interpret the chapter data. Perhaps MPEG-7 would provide that... but it doesn't right now. PS: I think it would be better if you referred to this information as being in "user data" rather than "user space". The atom they are stored in is 'udta', and the specific atom in the 'udta' atom is a 'chpl' userdata:chapterlist each track ('trak') and the actual video ('moov') (ie the file) can have multiple userdata items. Examples of other userdatas are the copyright, and title metadatas, as well as the iTunes M4A 'id32' ID3v2 data chunk 'chpl' is simply a chapter list format which was first implemented by Ahead. We found the format simple enough, and well designed enough, that we decided to go with it, and implemented it in our Splitter, hopefully this will engender interoperability, for functionality which hasn't actually been satisfactorily specified by ISO/MPEG. We plan to add support for it in our Muxer's later. Perhaps hardware vendors will also add support for it...
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http://www.3ivx.com Last edited by Stux; 28th January 2004 at 21:41. |
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29th January 2004, 09:20 | #13 | Link | |
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By the way, very good work. I think I should invest some bucks into 3ivx. Any chance for b-frames soon? tiki4 |
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29th January 2004, 10:27 | #14 | Link | |
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so to say if you want to give people the chance to create nice and powerfull interactive streaming menus you need to offer much more features than for a (fairly easy) dvd menu for example of course to support chapters and subs you dont need a bifs decoder that supports the whole range of features mpeg-4 systems offers ie for subs, look at my mp4sub script and you will see that there are not that much commands needed to be supported, but of course its easier to define some workaround, which isnt breaking the mp4 file anyways lets hope someone starts writing a nice dvd 2 mp4 (with menu) tool (maybe ahead?) than there will not be a way around bifs
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30th January 2004, 10:43 | #15 | Link |
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btw. did anyone find a way to combine ffdshow and 3ivx so that one get's the anamorphing support of 3ivx and the Postprocessing filters of ffdshow?
(setting ffdshow to support raw video 'combines' ffdshow&3ivx but the anamorphic support doean't work) Cu Selur |
30th January 2004, 11:00 | #16 | Link |
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i guess its because you didnt tick the overlay mixer option in ffdshow, which is needed for anamorphic
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30th January 2004, 13:29 | #18 | Link |
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it works here!
i used latest ffdshow from sourceforge (not the compiles from athos) settings: untick allow unsupported decoders in splitter tick xvid, divx3-5 and ffvfw support in ffdshow + raw video (all supported) + use overlay mixer -> ffdshow is used (with overlay mixer2) and anamorphic gets resized correctly automatically note that athos latest compile offers two possible overlay mixer settings, one resulting in using overlay mixer and one in overlay mixer2 (which is needed for resizing)
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30th January 2004, 14:16 | #19 | Link |
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If you use Nero's ShowTime player, anamorphic encodes resize correctly on playback!
I've put a few examples on my web site. May I ask hy it is that there are so many 'anamorphic' settings to choose from (NTSC 4:3, NTSC 16:9, PAL 4:3, PAL 16:9, 4:3, 16:9, etc) when XviD's codec has just 3No. Cheers
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