Certified DivX devices

[symonjfox]

In the new version, there are some profiles that let U create a video file compatible with these devices.

My questions are easy:

1- Why should these devices be compatible with divx? If Divx is MPEG4 compatible, these devices should be able to handle MPEG4 files, non JUST DivX.
2- Ok, let's suppose they create DIVX-ONLY compatible devices, what container will they use? AVI? MP4? If they use MP4, the question is the same of the first I made.
3- Which audio should I use to create NOW files that will played with such devices? MP3? AAC? AC3?
4- Why don't they create a standard for those MP4 (DIVX) DISCS (like VCD is for MPEG1, SVCD and DVD for MPEG2)?

I'm sorry for my "fantastic" english ...:eek:

[Acaila]

1) The MPEG standard has several profiles. They each have a different target for use (bitrate, resolution, dis-/allowing QPel/B-frames, etc.). To make a device compatible to more than one profile takes time and money. Something not everyone is prepared to invest in.

DivX is MPEG4 compatible...for certain profiles. Hardware devices like the Kiss player are MPEG4 compatible...for certain profiles.

So by enabling a profile setting it ensures that you will be able to play that video on all devices that are compatible with that particular profile.

2) Probably AVI, because IMO the MP4 format is too young to count on yet. AVI seems to be the most reliable container format from a hardware developer point of view because it has been around for so long and almost everyone knows about it. Whether or not it is the most suitable format is another question entirely...

3) MP3 compatible devices seem to appear more and more lately, but MP3 is in my eyes a dying standard (just like AVI). Nevertheless, it's been around for so long that most devices that are created now will likely support it.
Also AC3 will most likely be supported by every device because of the immense popular demand of DVD. Since all these hardware video players will definately be able to play DVD's, support for AC3 is manditory.
AAC, although getting better and better is not settled down enough to be 100% reliable from a hardware developer point of view. So most players either won't support it, or incompatibilities could arise in the future if the implementation of AAC audio changes.

4) They have. That is what the MPEG4 profiles are for. Even VCD and SVCD are just implementations of certain profiles supported by MPEG1/MPEG2. You already said it yourself with "SVCD and DVD for MPEG2". SVCD is a collection of profiles, DVD is a collection of other (overlapping with SVCD) profiles, but both are implementations of MPEG2.

[symonjfox]

Thanks for the explanation :D

Originally posted by Acaila
1) The MPEG standard has several profiles. They each have a different target for use (bitrate, resolution, dis-/allowing QPel/B-frames, etc.). To make a device compatible to more than one profile takes time and money. Something not everyone is prepared to invest in.

I know about MPEG4 profiles, but I wanted to say that since DivX is at least MPEG4 simple profile compilant, these players should be it too, non just DIVX MP4 compilant. If I encode using Xvid, 3ivX or others? I know it is not easy. I don't want anything. I just want to know why they wrote in their site (http://www.divxnetworks.com/certified/about.php) "In a recent survey, over 67% of DivX users reported that they were "Interested" or better in paying as much as US$160 for a DVD player that could play DivX video." well I don't. I'd pay this money for a DVD player that could play MPEG4 files, not just divx. I am not in hurry for this upgrade ... I have my DVD player and I'm happy so ) :cool:

Originally posted by Acaila
4) They have. That is what the MPEG4 profiles are for. Even VCD and SVCD are just implementations of certain profiles supported by MPEG1/MPEG2. You already said it yourself with "SVCD and DVD for MPEG2". SVCD is a collection of profiles, DVD is a collection of other (overlapping with SVCD) profiles, but both are implementations of MPEG2.

I would say if they are creating any standard for MP4 discs. For example if I create an MPEG2 file and I write it onto a CDR, this file won't be playable if I haven't created it for SVCD, if the resolution, the frame rate and the bitrate are standard compilant, if I created it as SVCD (and not as CD mode 1 for example).

[SenorKaffee]

Just take these "profiles" (a stupid name because you can confuse them with the MPEG4 profiles) as a kind of video disc standard.

If your DIVX complies to the profile that is printed on the sticker of your divX player, it is guaranteed it will play. On every device with this sticker.

You cannot be sure now, PCs play everything, but dedicated hardware can be very picky.

[symonjfox]

Originally posted by SenorKaffee
You cannot be sure now, PCs play everything, but dedicated hardware can be very picky.

It's for this reason that I wrote this post :D

I just wanted to know if someone that created those profiles could help me to create CDs that will surely compatible with these devices.

I understood that if I check a profile, it will play it, but I'm not sure about the format of audio, container, and other settings but the video. :o

:sly:

[Acaila]

I understood that if I check a profile, it will play it, but I'm not sure about the format of audio, container, and other settings but the video.The container and CD-format you use is actually irrelevant. Once you get a hardware player, you can demux and remux the video/audio and burn it into the correct CD-format that WILL play it. Only the video, audio and subtitle streams are set in stone.

[LeonMcNichol]

Originally posted by Acaila
The container and CD-format you use is actually irrelevant. Once you get a hardware player, you can demux and remux the video/audio and burn it into the correct CD-format that WILL play it. Only the video, audio and subtitle streams are set in stone.

That of course is tedious and I think that's what his point is. He wants to be able to format the MPEG4 video file to what they will use in the future. So he doesn't have to A) waste a disc(s) and B) waste time redoing/re-encoding to the right standard format/container.

Also AC3 will most likely be supported by every device because of the immense popular demand of DVD. Since all these hardware video players will definately be able to play DVD's, support for AC3 is manditory.

But isn't the AC3 in AVI's non standard? And would cause complication on playback in the device?

[symonjfox]

Originally posted by LeonMcNichol
That of course is tedious and I think that's what his point is. He wants to be able to format the MPEG4 video file to what they will use in the future. So he doesn't have to A) waste a disc(s) and B) waste time redoing/re-encoding to the right standard format/container.


Finally someone understood what i mean :D

[Snollygoster]

Symonjfox I have the same nightmare.

I need an ISO container, an ISO video codec, an ISO audio codec and an ISO subtitle format. This is what I need.

I mean I have so many encodings, with various Codecs, Audio Codecs and Containers.

Please somebody enlight us!

[Phobos]

MPEGIP tools have been claiming to support advanced simple profile for almost a year, whenever that comes true, we will be able to do mpeg4 compliand dvd rips using iso compliant video like divx, audio like aac and mp4 as a container... sigh i cant w8

[dTb]

It's hard to say what will and won't work in the future, atm I would look at the Kiss player as the best indicator of what will safely work. Afaik it supports avi with cbr mp3 or ac3, vbr mp3 while supported is problematic as expected. I believe support for GMC was even implemented recently.

It seems to me the main factor with the profiles in the recent release of DivX is the max bitrate. Hardware players can only handle video up to a certain bitrate (you see this with svcd, different players with different max bitrates) so by locking a max bitrate down for different profiles the chip makers can make sure their chip will handle it.

[Phobos]

any chance the kiss would ever support aac or ogg??? Like OGM or ISO MP4 streams respectively. I dont like mp3 personaly since it takes too much space for 1cd rips to have reasonable quality

[Mango Madness]

a simple solution: get a video out cable :)

[Top_Cat]

any chance the kiss would ever support aac or ogg???

I believe that the Kiss Player supports ogg format now, with the latest Firmware upgrade.

I would really like to get a Kiss Player (I know I could get a TV-out cable) but I need a new DVD Player and if it supports Divx 3.11alpha (new firmware) it looks like a pretty good deal.

I am waiting to see what people say about the Divx 3.11 support before I buy

[Phobos]

Originally posted by Mango Madness
a simple solution: get a video out cable :)

you are right, i do have the stuff to output my computer signal to a tv, but a mid tower case is kinda bulky, and i dont have my main tv set close to the computer.

Top Cat, i assume that the new firmware will allow cbr ogg in avi container right?? it would be cool to have ogm support right now. Also what about subtitles??? just putting the srt file named the same like the movie will work or this device doesnt support subtitles at all?

[seewen]

Also what about subtitles???

Subtitles "works" since last firmware update.
But it's really not perfect. You can not show/hide them for the moment.
And Subs are not in the center of the screen. They are on the left.

And *.srt doesn't work very well. But *.SSA and SubViewer (v1 or v2) does.

I'm sure that KISS will improve this feature.
3-5 Month ago MP3-VBR wasn't readable, OGG wasn't readable, MAX bitrate was 3'000, GMC wasn't readable, 3ivX & Dicas weren't readable, Multi-session CD's weren't readable, ETC...


a simple solution: get a video out cable

Quality is better with the KISS than with a TV-out ;-). I don't know about other players, but KISS is a good company.


i assume that the new firmware will allow cbr ogg in avi container right??

OGG is compatible as MUSIC-CD only. Not in AVI. Maybe 1 day... ;-)

[Phobos]

thnx for the infoz, sorry to hear subtitles are still crap. Not on the center what a joke rofl...

[Top_Cat]

The new firmware is out soon though so a few of these problems (subtitles being on the left) might get changed. seewen can you post to let everyone know how well the new firware does with Divx 3.11alpha (when the firmware is released that is).