Creating a CVD

[mattscholey]

Very simple question, but I can't seem to find anywhere on the site which answers it:
[b]What software do i need to create a CVD?
Preferable free software.
Thanks
matt

[Betamax]

TMPGenc generates CVD stylisch MPeG's.
Because the transparanty of CVD and VCD (there both the same except some header bits) you usually can use software which are devoted for VCD to create CVD and vice-versa (VCDimager to name one).

If you _realy_ want to have CVD, then do a 'google'/'yahoo'-search of it, to look for it at Asian sites (the 'C' of CVD stands for Chinese ).

A+

[Treebeard]

Lets clear some things up after that last post.

CVD is closer to SVCD than VCD. Vcd is a mpeg1 format. CVD is mpeg2 format (just like SVCD). Audio is 48khz whereas audio is 44.1 for VCD & SVCD. Resolution is the other difference, CVD is half DVD resolution 352x480 ( i believe). Tmpgenc will do CVD but not the free version you will need full version to create CVD.

there is a CVD template for TMPGenc in the tools section. Or you can just Load a SVCD template and then manually change the audio properties to 48khz and the resolution to 352x480.

hope that is a little clearer information.

[Betamax]

Lets clear some things up after that last post.

Sorry that I saw it wrong...

[Treebeard]

Lets clear some things up after that last post.

Sorry that I saw it wrong...

Not a prob, I've done the same.

[twodogs]

...and don't forget to grab a CVD template from the Tools link if you're unsure of TMPGEnc settings.
I've had success with Puertorican's CVD template, so give it a shot.

edit: sorry treebeard, completely missed you already said this... doh!

[puertorican138]

...and don't forget to grab a CVD template from the Tools link if you're unsure of TMPGEnc settings.
I've had success with Puertorican's CVD template, so give it a shot.

edit: sorry treebeard, completely missed you already said this... doh!

Thanks for supporting my templates, twodogs!!! :P

[Sartori]

As CVD is a DVD legal resolution you can use them in your own DVDs , but as far as a lone CVD is concerned your DVD player might not like the fact that the sound is 48khz , IF this is so then leave the sound option at 44100hz in TMPGenc .

If you then reuse the videos in DVDs at a later date - just convert the sound in TMPGenc or wherever to 48khz . Its best to check in a audio editor that the soundfile is the same size if you do that .

[hwoodwar]

Quote "Audio is 48khz whereas audio is 44.1 for VCD & SVCD"

Wrong! A lot of people have this misconception. CVD, VCD and SVCD are all 44.1 Khz audio. It is just that many people bump it up to 48k audio to make it easier to convert to DVD format later.

[energy80s]

Also make sure that your GOP's are 15 for PAL and 18 for NTSC - TMPGenc doesn't do this by default, so you have to manually enter the number, and it's also worth "closing" them as well.

[puertorican138]

Also make sure that your GOP's are 15 for PAL and 18 for NTSC - TMPGenc doesn't do this by default, so you have to manually enter the number, and it's also worth "closing" them as well.

"Output bitstream for edit (Closed GOP)" can actually lower the quality. I always set my "frames per GOP" to 18 since I live in the U.S.

[Cornucopia]

puertorican138 wrote:

"Output bitstream for edit (Closed GOP)" can actually lower the quality. I always set my "frames per GOP" to 18 since I live in the U.S.

Yes, it can change the proportion of I-frames to B, and P-frames, raising the bar for efficiently displaying the same quality (i.e. usually requires higher bitrate), HOWEVER, there is usually MUCH LESS problems with skipping, FF/RW and sync.
While you can always add a little more NR filtering, finetune the VBR settings, motion search settings, etc. Once you make the choice of GOP for that segment (I say segment because you could have a hardware encoder that does segment-based re-encoding ), you've locked it into a particular level of sync and compatibility/incompatibility with certain players. Keeping it as 15PAL/18NTSC Closed-GOP as per DVD recommendations, will ensure the most compatibility.
Of course, if you're trying to SQUEEEEZE out every last bit of bitrate efficiency, as KWAG does, you may need to keep GOP's open, but then you might as well not stick with the "15/18" rule, or standard DCT/Q matrix values.

BTW, if you ever want to do DVD's with MultiAngle, these aren't just recommendations, they're mandatory (with a few more rules, as well). It's a good idea to get into the habit...

Scott