Vob to compliant SVCD format without re-encoding?

[duckboy2k]

I want to know if it's possible to burn a compliant svcd without re-encoding using the following vob files.
Here are the specs of my vob files using AVICodec
Video: bitrate 9496 Kbps, 29.970 fps, 352*480 (16:9), MPG2 = MPEG 2 (SVCD/DVD),
Audio: 256 Kbps, 48000 Hz, 2 channels, 0x2000 = AC3 DVM [0x80]
Compliant svcd require 480x480 resolution, 224kbps cbr 44.1khz, so i guess i'm out of luck?
It's a raw vob file, meaning no chapters/menu, I intend to cut it up, and convert to svcd. If i end up having to re-encode the whole file, which guide is the best for converting VOB to svcd without losing quality?

[jimmalenko]

You'll have to re-encode because you're changing the resolution.

[Abond]

I would say you have to reencode for changing the bitrate and aspect ratio (SVCD is 4:3)

[Hyper Shinchan]

I would say you have to reencode for changing the bitrate and aspect ratio (SVCD is 4:3)

It's not right. SVCD support anaphormic video, I'm sure about it (also if my DVD player show the SVCD 16:9 like 4:3 and I have to correct the format on the TV).

[mats.hogberg]

Yes, the problem is the bitrate. 352*480 is 1/2 D1, not SVCD, but CVD, which besides resolution is the same as SVCD.
Audio has to be decoded to wav, and reencoded to mp2 - keep it 48 kHz even if SVCD says 44.1 kHz. I've never heard of a DVD player that refuses to play 48 kHz audio correctly as SVCD/CVD audio.

So, I'd:
Demux a & v with ReJig to m2v + ac3
Reencode m2v to 18-1900 kbps (not all players handles max bitrate SVCD gracefully) m2v
Extract audio to wav (headac3he) and encode to mp2 toolame
Multiplex a+v with TMPGEnc MPEG Tools to svcd mpg
Author with VCDEasy.


/Mats

[jman98]

I wanted to point out that AC3 is not valid for SVCD.

[Cornucopia]

Realizing, of course, that 99.999% of players wouldn't be able to play it, it might be a kick to apply a reverse of the usual SVCD-to-DVD header trick, just to see if it'll make it to the burning stage.
Hint: you would need to re-patch after making a bin/cue, using CDMage or a HexEditor or something--would be especially hard to do with the AC3 audio.
Plus, what DVDplayer supports CD spin speeds high enough to support 9Mbps? Ah, nevermind. Go with the standard tools. Remember to SRC the audio to 44.1kHz, outputting mp2.

Scott

>>>
edit: that's really unusual that you've got 1/2D1 with such a high bitrate!?

[mats.hogberg]

Remember to SRC the audio to 44.1kHz, outputting mp2.

OK, if you're anxious about std compliance, but in reality, 99.9% of all players (very unscientific) play VCD and SVCD with 48 kHz audio without any problem, and it makes the transit to DVD more streamlined, come that day you want your old collection of VCD/SVCD on DVD.

/Mats