Optimum Quality From VCD?

[ShorN]

Dear all,

First, what a great website! I am now addicted to Video Conversion!!



Well here is my situation:

Im in the UK, and have many videos in avi format,

The videos are nearly all 23.976fps, and 700mb

I have been trying to convert them to vcds for some time now with varied success. As most of the videos are dvd rips and are good quality I want to keep the optimum quality I can when converted to VCD.

So far I have been using TMPGNc to convert the vids after extracting the audio in a wav format. I have converted to pal format but jerkyness occurs, so ive tried keeping the frame rate at 23.976fps. im sure my tv and dvd have no problems with ntsc as they are both brand new.
What I would like to do is convert the avi's to vcd at the best quality possible.
I would like to fit the vids onto two 80min cd-rs.
I have only ever used a constant bit rate nut as on of the vids i have has several fight scenes i think maybe a varible bitrate would be best? But how do you calculate the size of the mpeg file when the bitrate varies?

If anyone can help in anyway at all i shall be most thankful!!

[Buffist]

Hi ShorN,
maybe you take a look to the "HOW TO"s on the left side... ;-)
This helped me a lot on getting closer to ripping, (re)encoding and so on.
Sorry for the short reply.
Best regards
Buffist

[digitalmaster]

Go to www.kvcd.net. They have a forum for a program called FitCD.

[mats.hogberg]

It's pretty much like calculating what bitrate to use for CBR. Just use the CBR bitrate value (that would fill a CD) as VBR average bitrate and you'll end up with an mpeg filling your CD. What you use as max and min bitrate doesn't affect the size of the final mpeg.If you don't have a bitrate calculator, I recoomend this!
/Mats

[kwag]

Go to www.kvcd.net. They have a forum for a program called FitCD.

MovieStacker
http://kvcd.net/forum/viewforum.php?f=35&sid=c02f96f8f0b6706220b451b9150e8958

-kwag

[DEmberton]

So far I have been using TMPGNc to convert the vids after extracting the audio in a wav format. I have converted to pal format but jerkyness occurs, so ive tried keeping the frame rate at 23.976fps. im sure my tv and dvd have no problems with ntsc as they are both brand new.

The way to get rid of the judder is to check the "Do not frame rate conversion" option in TMPEng. This has the effect of speeding up video (which is what they usually do for films and some TV shown on UK TV). You then need to treat the audio in a seperate program to speed that up too. Instructions on this site somewhere.

If you're converting to VCD, you may find sticking with NTSCFilm (23.976 fps) format causes very jerky playback on your DVD player (just been saying this in a different thread). They playback very badly on mine anyway. SVCD doesn't suffer from this limitation, and gives much better results anyway, so perhaps you should consider going for SVCD instead.

Dave

[ShorN]

Hi thanks for advice so far. I have had a go with the kvcd templates and the picture quality is a lot better, the only thing is that i cant get the audio to sync up. I have been converting to wav but no joy?

Can any one help?

[mats.hogberg]

In what way are you experiencing sync problems?
Off by a specific amount thruout the movie?
Progressively worse sync?
Fine for a while, then suddenly off?
What format is the audio in the AVI in?

/Mats

[ShorN]

ive gone for a diff method using progs called TOK and Movie =stacker in conjunction with kvcd and its sorted out

Thanks for help people!!!