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azurenights
11th March 2002, 01:12
Hi just wondering if anyone out there knows how to encode a svcd for a movie that plays at 20 frames per second. The movie I am encoding is Chicken Run in PAL. Will a svcd with 20FPS play properly on a standalone player????

one more thing could anyone tell me how to encode four audio streams for an svcd??? thanks

smiller667
11th March 2002, 02:08
I would not recommend to convert a 20fps avi to a 24/25/29.97fps standard-compliant svcd, quality will be substandard and more than likely movements will look choppy. Better get the DVD and re-rip from scratch. Playback of a 20fps mpeg2 stream would most likely be unsatisfactory, if you get it authored into an SVCD, that is.
How to mux 4 audio streams? I am trying to work that out myself atm. You will have to use 4 mono streans if you want to be standard-compliant. Try muxing the fist two streams using bbmpeg and then add two more streams using TMPGEnc. Another user reported that using this method, you can even get two stereo and another two mono tracks into an SVCD stream and it can be played back in a Raite DVD player. No idea about sync issues, though.
I'd be interested in results of your experiments ...

azurenights
11th March 2002, 03:53
Thanks for the tip but what exactly do you want me to do when you say get the dvd and re rip it from scratch??? How is that going to change the fps on the vob files??? or did you mean just to buy the dvd??? Have you ever encountered a movie with 20fps??? If you have how did you encode it to svcd???? What programs should I use to make an svcd from Chicken Run. Is it possible to rip this to svcd or not????

could you give me more details about how to encode a svcd with four audio streams?? you say to use bbmpeg to encode the first two audio mono streams but are you sure the program will encode the two audio streams on the same stereo track?? or will it encode one mono stream to one stereo track and the other audio stram to the other stereo track???

how do you mux in tmpgenc?? thanks

RoopeT
11th March 2002, 09:32
How is that going to change the fps on the vob files???

It isn't going to change the fps on the vob files, the vob files will have an fpss of 25 (PAL) or 29.97 (NTSC). If you have the vobs lying around on your hard disk and DVD2AVI claims it's 20 fps, this has happened to me also when using the DVD2AVI version bundled with Gordian Knot. Using the version with DVD2SVCD gives the correct 25 fps, though.

About 4 audio tracks: you have to create 2 audio tracks, each containing 2 mono tracks (I think CoolEdit can do this, haven't tried). Then just encode to mp2 and mux with BBMPG. I don't see any advantage using TMPGEnc.

azurenights
11th March 2002, 14:22
thanks for the tip roopeT.

Well dvd2avi 1.76 claims it to be 20 fps while dvd2avi 1.85 claims it to be 25 fps. I guess the later version of dvd2avi must have fixed up some bugs in the previous versions.

So does anyone out there know how to create one stereo audio track from two mono audio streams??? do you have to use a wav editor or can you do it with existing programs??? thanks

smiller667
11th March 2002, 15:04
About 4 audio tracks: you have to create 2 audio tracks, each containing 2 mono tracks (I think CoolEdit can do this, haven't tried). Then just encode to mp2 and mux with BBMPG. I don't see any advantage using TMPGEnc.As I said, I am trying to work it out myself :) ... I think I used wavelab for that, but it's basically the same. When encoding, I-Media gives you a "dual mono" (instead of plain stereo) option.
My problem was: I couldn't switch between the four mono tracks using the "language" button - instead I could select between language 1 and 2 only, which were dual-channel tracks (one language left, the other one right).
The method I described was from another user who claimed he could switch between the four tracks just using the "language" button.

About your fps problem: Sometimes asf or divx material has nonstandard framerates like the one you mentioned - and that's a pain to convert to SVCD. Thought you were trying to do that - thus my recommendation to re-rip and start with proper material.

azurenights
11th March 2002, 15:25
so exactly how do you encode an audio stream with two different mono wav files???

you told me that imedia has the option of dual mono, but whenever i extract a wav file from graphedit I can only extract it from one ac3 file, which therefore means one language. So how do I encode a dual mono wave file with two different languages instead of one?? thanks

Pko
11th March 2002, 20:29
Originally posted by azurenights
Hi just wondering if anyone out there knows how to encode a svcd for a movie that plays at 20 frames per second.[B]

Better not do it... I think is simply a bad DVD2AVI processing

[B]The movie I am encoding is Chicken Run in PAL. Will a svcd with 20FPS play properly on a standalone player????

I think that you have mistakenly processed the VOBs with DVD2AVI with "forced film" option activated. Try deactivating it, that option is not applicable to PAL movies, only to FILM NTSC

Chicken Run PAL is 25fps, at least in my version...

one more thing could anyone tell me how to encode four audio streams for an svcd??? thanks

You have two options; one, non-standar, simply multiplex all 4 stereo MP2 files with TMPGEnc, and some players can play it.

Two, standard-compliant, convert the 4 streams to mono (remember that the bitrate in mono should be HALF the bitrate in stereo, so 64 mono is like 128 stereo) and then multiplex them with TMPGEnc.

I have not tried neither of that options, it is simply what I would try if I wanted to put 4 audio streams...

Please, if you do, tell here your results (quality, bitrate, compatibility with players...)