Is CVD really an XSVCD?

[davy19]

Whenever I try to open my cvd mpeg2 file into Ulead DVD Moveifactory, it asks me this does not meet the standards, would you like to make an XSVCD instead?

If I say yes, everything works, and it plays in my home dvd player, but I am worried that other dvdplayers might think it is an XSVCD instead of a CVD, and wont be compatible?

[sammie]

A lot of subtle differences, but probably the key one is the audio frequency. SVCD is 44 kHz and DVD 48. I guess the answer to your question is "depends". The xSVCD should play on most SVCD compliant players (I've noticed that even commercial SVCDs don't play on all SVCD compatible players so.....). CVD's ~ 1/2D1 DVDs and therefore should play on virtually all players (assuming the recognize the DVD +/- R media. I've read that the standard may drop the requirement for CVD/ 1/2D1 support outside of Asia so who knows how long that will work. But I presume quite a while, since almost all players come from Asia.

Actually, you probably need to check further what the error message means? Is your program's definition of xSVCD simply anything other than fully compliant SVCD? What does the final directory and file structure look like? A DVD or an SVCD? So far I haven't had problems with any of the authoring programs accepting CVD files (Ok, except those programs that insist on re-encoding everything!!)

[caish5]

Simple answer... YES
Long Answer....
CVD was a format developed around the same time as SVCD with identical specifications except for 352x576/480 resolution istead of the 480x576/480 of SVCD. SVCD became the standard and so therefore CVD is an xSVCD of sorts. There is no software that specifically deals with CVD so xSVCD will be fine. If a settop player can play SVCD then there should be no trouble playing CVD as I believe the SVCD standard included support for CVD as CVD was fairly well developed by this stage and some palyers had actually been made in china.

[Spicuzza]

davy19,

sammie has it exactly correct, CVD is an XSVCD at 44 khz audio and it is a DVD at 48 khz audio.

Just for fun render a short clip at 48 khz audio then go to burn it and see if the DVD box isn't highlighted!

Great topic!

[davy19]

OK thanks everyone for info


If I change it to 48 khz it does not recognize it as an svcd anymore only as a DVD.

So then when I go to burn it, it gives me an error message some players might not recognize a cd/rw with 48khz, do you still want to do it.

When I clik yes and burn I notice when I put it in my dvd player, it recognizes it as a miniDVD, and it still plays.


So since it works for SVCD as 44 khz, and DVD at 48khz, what do you recommend I do for future compatibility? If I did it at 44 khz that would mean I would need space since it will be a bigger file?


btw, cvd really loookcs so much better then svcd, for my converstion of vhs tapes what a difference.

[adam]

The audio frequency does not affect size. The reason one would use 48kHz, at the expense of making their CVD non-standard, is so that you can later transfer the movie over to dvd. Your current player seems to support 48kHz, so there are no present compatibility issues so if you have any intentions of ever transferring your CVD's to dvd, then I would use 48kHz, but realize that your movie may not play on all CVD/SVCD compatible dvd players.

From the sound of your post it seems your source is 4410kHz, so quality really isn't a factor either way. Converting to 48kHz definitely won't help, and it probably won't hurt any either.

In regards to CVD being an xSVCD, really its not. Even though SVCD is far more recognized worldwide, CVD is still a set standard with hardware support, its just that its been orphaned by/adopted into the SVCD standard as far as hardware players are concerned. A compliant CVD cannot be considered a non-compliant SVCD, simply because it doesnt adhere to that standard, anymore than a DVD can be considered a non-compliant SVCD for the same reason.

The reason authoring programs will view your CVD compliant mpg as being in non-compliance with the SVCD standard is simply because those authoring programs do not recognize the existence of the CVD standard. The only thing you need to be concerned with, however, is the fact that your your dvd player DOES recognize that standard, or at least should.

[davy19]

Thanks everyone for the info.


I have to say that using my hauppuage PVR-250 and making CVD, from my old VHS tapes, the quality is incredible, some tapes actually look much better then it was on VHS, but my biggest concern was not to loose too much qaulity. Which with CVD format I have not. No tlike SVCD. The settings I am using is CBR 2520, 44 khz/224. I actually wanted to use 44 khz/128 but ran into some wierd sound problems so just stuck with 224.


I was about to give up on this PVR-250 but now that I have it working pretty good, I am happy with it.


Btw, the player I am using is the Initial 9510 for $200 which I got at walmrt, so far it has played everything I threw at it, from vcd/svcd/cvd/xvcd/xsvcd/miniDVD

I really cant complain.

[valterroque]

Hi can someone email me a CVD Pal template for TMPG.
Thanks

[vitualis]

As what adam said.

To add on, since essentially none of the authoring programs actually knows of the CVD standard, you are in fact making an XSVCD of sorts when you make a "CVD".

The closest thing you could come to making a real CVD is probably with ?I-Author.

There are differences in the disc structure between SVCD and CVD but I doubt this will really affect any stand-alone player (unless you happen to own a very strict stand-alone CVD player of course).

Regards.