can VCD be different bit rate other than 1150?

[scorpiots]

hello. one of my friend's dvd player doesnt support svcd but do support vcd. I wanted to check if vcd can support higher bit rate than 1150. when I use TMPGenc for VCD format the bit rate selection is grayed out. so Im wondering if it is possible to change vcd to higher bit rates.

if anyone has done this please post. thank you.

 

[Adul]

prob not. but i guess one of the VCD experts will tell you otherwise.

 

[Diable]

Most DVD players that cant play SVCD's probably cant play high bit rate VCD's either but to change the bit rate just load the VCD template first then load the unlock template located in the Extra's directory. Ater that you alter the bitrate as you please.

 

[Sugadaddy]

What Diable said...

vcdhelp.com used to have a list of all DVD players and their maximum supported bitrates, but I think they took it down... The main reason why a player wouldn't support it is because they can't spin the CD fast enough. (DVD has higher density, so it doesn't spin as fast)


My Pioneer DV-333 supports up to 2500kbps for both VCD and SVCD, that's one of the reason why I got it.

 

[Pabster]

Answer: Yes. Going above 1150, you aren't making a standard VideoCD. You're creating an eXtended VideoCD, oft referred to as XVCD.

Many standalone players are capable of playing high-bitrate MPEG1.

 

[scorpiots]

great I found out how to change bit rate for VCD. Just need to open the unlock.mcf in TMPGenc and you can set to different bit rates. thanks again everyone!

also after playing around w/ SVCD and VCD. I looked at the quality and filesize from both, and they turned out to be about the same. I was using 1800 bit rate to fit either 2 VCD or 2 SVCDs.
to give you an example..

30 secs of movie on 1800 bit rate

SVCD = 7.7 MB
VCD = 7.6 MB

and both quality are about the same, I cant tell the difference really. I know that mpeg2 for SVCD should give better quality. But in this case, both CBR = 1800

can anyone give opinion on this matter? I would rather stay with VCD and use same bit rate since it more compatible with other DVD players.

thanks for everyone's input!

 

[Sugadaddy]

If you're using the same bitrate, the files will be the same size. (there might be a small difference because encoding at a certain bitrate isn't 100% accurate)


On a TV, SVCD will look much better than VCD mainly because the vertical resolution is 2 times the res. of VCD. If your DVD player supports it, then I'd definitely use SVCD. (and 2-pass VBR would be even better...)

Of course, it also depends on your source file. Encoding from a DVD source isn't the same as encoding from a low-bitrate DivX you downloaded.

 

[Diable]

Did you use CBR or VBR to encode the SVCD? To get the best quality SVCD's out of TMPGenc use 2pass VBR, the settings you should try are 1800-2495-0.

 

[scorpiots]

yes my source is from dvd, and ripping to HD to .vob files. I have tried both ways again. both files turns out to be 7.61 and 7.62 meg long. and for some reason vcd gets little bit better quality than svcd vbr-2pass.

the setting I have is
vcd 1800 rate cbr
svcd vbr-2 pass, and like diable suggested, max 2495, avg 1800, min 0.

some how I have feeling I might be doing something else wrong. any idea why they would end up same file size? also both are 'interlace' if that makes differences.

 

[Sugadaddy]

<< yes my source is from dvd, and ripping to HD to .vob files. I have tried both ways again. both files turns out to be 7.61 and 7.62 meg long. and for some reason vcd gets little bit better quality than svcd vbr-2pass.

the setting I have is
vcd 1800 rate cbr
svcd vbr-2 pass, and like diable suggested, max 2495, avg 1800, min 0.

some how I have feeling I might be doing something else wrong. any idea why they would end up same file size? also both are 'interlace' if that makes differences. >>




You're using the same bitrate, it's normal that they're the same size. (think about it... )

Here's what the 2 settings windows in TMPG should look like: looky here

All you need to adjust is the source aspect ratio and field order. (I think top field is the right one, but it might vary depending on the DVD) If you set the wrong field order, you'll get wierd scan lines when something on the screen moves fast...