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KeepWalking
15th June 2004, 17:40
Is possible to convert a SVCD (.mpg) To DVD with dvd2svcd?

How can I do that?

r6d2
15th June 2004, 19:47
Originally posted by KeepWalking
Is possible to convert a SVCD (.mpg) To DVD with dvd2svcd?AFAIK it is not. But even if it was, IMHO it would probably not be recommended, useful or needed.

1. Not recommended, because reencoding from VCD/SVCD to DVD frame size is likely to deteriorate quality considerably.

2. Not useful, since your standalone player may be able to play SVCD already.

3. Not needed, because if you player supports SVCD it is very likely to support SVCD frame-sized encodes on DVD media too.

You may want to take a look at the guides section on www.doom.org for directions on how to fit SVCDs/VCDs on DVD media without reencoding.

Nick
15th June 2004, 19:48
You don't need to in most cases. :)

VCD resolution is within DVD specifications, although VCD audio is not. However, if you author from VCD MPEG streams to DVD using TMPGEnc DVD Author, it will convert the audio for you.

SVCD resolution is not supported, but most DVD players which will play SVCD (including software players for PC) will play SVCD-on-DVD/

DVDLab will author SVCD directly but give you a warning about resolution and you have to use "relaxed compliance" mode. TMPGDA will not author directly from SVCD but if you prefer this program you can use DVDPatcher (see doom9.org software page) to patch your mpeg stream to fool TMPGDA into beleiving they are compliant resolution, then repatch the authored VOB files back to SVCD resolution before burning. Thee Guides section on the main site has a guide for this.

HTH
Nick

EDIT - Beaten to it by R6D2 :)

johns0
16th June 2004, 04:18
I convert svcd mpg files all the time with svcd2dvd,what i do is load an ifo that doesnt have any vobs and dvd2svcd will ask me to add files,i then browse to where my mpg2 is and i load that in and choose frameserve(352x480/576) for dvd.Works all the time.

guru1968
16th June 2004, 11:33
...don't you want to get rid of the 2 seconds overlap on the second/third CD!?

just a few easy steps:[list=1]
extract the mpegs from the (S)VCDs (real or image file), best with VCDGear
demux video/audio, best with ProjectX
join (+remove overlaps) the parts into one big video + one big audio, best with Cuttermaran
convert the audio from mp2/44.1kHz into ac3/48kHz, best with beSweet
author the DVD with your favourite DVD-prog, using the audio from 4) and the video from 3) -- no need to convert video
burn, have fun
[/list=1]

that's the short form, all the guides to all those steps might be found here in the Guides (http://www.doom9.org/guides.htm) section...

gr33tz,
guru

Nick
16th June 2004, 13:36
@ guru1968

Without wishing to get embroiled in a Rule 12 "What's best" type debate I can't see the merit in recompressing the audio. This can only be done at the expense of quality. I know a DVD without an AC3 stream is technically not compliant but if your player can play SVCD video from a DVD I'd be flabbergasted if it choked on SVCD audio!

Again, DVDLab lets you author DVD's using SVCD audio streams or indeed muxed SVCD streams. You can even cut out the overlap, although there is a slight pause (0.25sec about) on playback between streams. So cropping the overlap and joining the streams manually beforehan remains the best way really, albeit considerably less convenient!

The only reasons I can see for converting either video or audio is to reduce filesize to get more movie per media, or to achieve standard compliance if you have a really fussy player. It can only possibly degrade quality so if your player will play them "as is" this must surely be preferable.

As a side note, this is even worth a try if your player will not play SVCDs! My friend's player will not play (S)VCD but will play SVCD on DVD. It is because the decoder chipset in the player supports SVCD but the manufacturers have not utilised this feature in the firmware to allow SVCD playback from CD(R). However, once the player recognises the disc as DVD-Video it decodes it at that resolution without problem.

Cheers
Nick

guru1968
16th June 2004, 14:19
well thanks - I should have said "I recommend" instead of "best", sorry, again...

And for the audio:
although most of the players do not have any problems playing DVDs with SVCD VIDEO, there indeed are standalone Players that refuse to play mpeg-AUDIO!

furthermore, the DVD authoring prog which I use was successfully patched to accept SVCD-video but still refuses to accept 44.1kHz audio, it insists upon 48kHz!

With the little list from above You can almost always be sure, that this SVCD-on-DVD can be played-back on almost any standalone DVD-player out there (I have quite some friends with all kinds and brands of different Players and the Discs created such can be played-back anywhere)...

gr33tz,
guru

Nick
16th June 2004, 17:16
Sorry if my last post came off bad - it was not intended to. :)

I didn't mean to accuse you of breaking rules. The point I was trying to make was that I did not want my own post to start this thread degenarating into a "my way's better than your way" situation.

I have yet to come across a player which will play SVCD video on DVD but not SVCD audio - clearly you have encountered such a beast!
Since mp2 audio is within the DVD standard they must choke on the fact that it is (or should be) encoded at 44.1kHz for SVCD, not 48kHz as is the DVD standard.

I certainly agree that re-encoding the audio to 48kHz AC3 will create a DVD closer to the DVD-Video standard. However, I was trying to clarify that this has_to_be at the expense of quality. Therefore if you have software to author untouched SVCD files to DVD and your player will play them, it is preferable to leave both video and audio alone.


Cheers
Nick

guru1968
16th June 2004, 19:13
uops - I never had in mind that You may have meant Your post in any bad way... let's forget about this and concentrate on the real thing :cool:


The one special friend of mine in general has problems with mpeg-audio, also for pure DVDs that have mpeg-audio!
- I think it's not his player but his amplifier that lacks mpeg-audio support altogether...
So I decided to always do an AC3 conversion!

You're certainly right that every conversion has a bad impact on the quality - but I don't have an option here since Spruce's Maestro will not let me use the original SVCD audio track; I don't like DVDLab since I most of the time need more than the one supported audio track there plus I do a lot with that fancy scripting which I never saw in any 'novice' authoring package; I never ever played with scenarist but doubt that this will take the 'illegal' audio-track.

I may can use the AC3/48kHz PLUS the original mp2 audio track -- but the least thing I have to do is an upsampling to 48kHz, no chance without(?)

Normally it takes a lot of time before you produce decent results with any DVD authoring solution - I have this long and stony road w.r.t. Maestro behind me and know now how to ride that bull; IMHO there's nothing comparable and I want to stick to it!
[the only candidate would eventually be scenarist, if any at all]

regards,
guru

p.s.
not to violate any forum rules, so lets try being politically correct:
the SVCDs I am used to convert are usually not of that high audio quality that any one ever will notice a decrease caused by the conversion...:D
doing this whole conversion thing only because of two facts:
A) I am lazy and don't like to have to flip CDs in the middle of the movie...
B) when there are multiple audio tracks 'available' the result won't fit on the CDs (especially together with the language menu, chapter preview, blah, blah...)

p.p.s.
okay, okay - you can now argue that because of the low source audio quality there may not be any conversion to make this even worse; but beSweet does a pretty good job here

ChickenMan
19th June 2004, 13:03
Just for the record, I use DVD2SVCD to re-encode my SVCD's to DVD compliance mpegs all the time. All I do is rename the svcd mpg (true mpg, not one just copied off a CD) to VTS_01_1.VOB, the second mpg to VTS_01_2.VOB, third to ...,etc. Then just copy a VTS_01_0.IFO from any original DVD to the same folder as the renamed mpegs. Load the IFO into DVD2SVCD, ignor the movie length (not used anyway) and encode as usual.

If there are any 2-3 second overlap between mpg files, I either learn to like it, or just use MPEG2VCR to chop the few seconds off the end of the first mpg.

As for audio, you do need to manually recan at 48khz and convert to AC3 for best playback compatability. I use Goldwave to recan to 48khz and save out as a WAV. I find very little, if any, quality loss when converted. I use Sonics AC3Enc to convert the wav to ac3. This assumes the same bitrate of the mp2 used for the ac3.

emdiem
19th June 2004, 19:15
I use (s)vcd2dvd program. it patch the head of the mpeg to 720 and fix the audio...

then i just reauthor with ifoedit and then i have a dvd =)

you really dont need to recode the files, just rewrite the header of the mpeg file, most dvd standalone plaer fix that. this way u can have two movies on a dvd5.

halley_tang
20th March 2006, 08:59
Is possible to convert a SVCD (.mpg) To DVD with dvd2svcd?

How can I do that?

It can be done with three steps:
1. Use TMPGEnc to encode the DAT file to two separate video (m2v) and Audio (mp2) files. (or encode the mpg file)
2. Use IfoEdit to combine the m2v and mp2 to VOB, IFO and BUP files.
3. Use DVD-shrink to compress many VOB's into one DVD and burn. You can combine many title of VCD to one DVD using DVD-Shrink. :)

However, I am looking for any program or batch file that can do all 3-in-1 step. Any idea?

ArchieX
20th March 2006, 16:56
Badgersoft (S)VCD2DVD V1.5 is almost a one click solution.

Point it to your mpgs/dat files, create a simple menu in the app and glick go. Its a bit slow but does work.