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View Full Version : complex process made easy ? Really ??? (long post)


BroKnBones
14th May 2002, 13:08
Dear reader,

I hope I have read the various FAQs, Guides and past posts concerning various problems I have had with DVD2SVCD, and this post is only here to illustrate what a "noobie" has to go through, since many people don't remember how it feels to be a beginner.

I discovered I could rip DVDs to SVCDs, keeping much of the quality of the original movie, but in a format that would allow me to take movies with me on 2 CDs while travelling, so I could watch them on my laptop.

Since then, it has become more a freetime-eating obsession than a night-time automated job. In the meantime, we bought a standalone player for the house, and playing SVCDs has not really been "easy".

In a nutshell, my P4 1.8GHz, 512 MB DDR-RAM 1 gazillion GB HDD space has been crunching VOB files for hundreds of hours under WinXP Pro, and still I only have a few nice MPG2 files here and there, without even one working SVCD image with menus, subtitles,...

This illustrates I hope the fact that :

1) I am most certainly incompetent
2) there is so much to read and learn that even "easy" automated tasks can be like hell.

Example Shrek, region2, or Unbreakable, region2. DVD2svcd 1.09 build 1. When selecting the IFO to start the whole conversion process, windows makes me wait, telling me "requesting information from disk". I used smart ripper to extract successfully all the files to the HDD, so let's move on. Other movies work fine, go figure.

DVD2AVI, Audio and Frameserver tabs, all is well explained in the guides, and seems to work like it should.

Bitrate: it seems from what I read here and there that the min bitrate has to be higher than 300 for some standalone players, like my Philips DVD951. Moreover, I also read that bitrate bursts might be higher than the SVCD specs and the indicated max BR in DVD2SVCD, which can cause problems of stu-stu-stu-stuttering.

Encoder: I use CCESP 2.50. VBR will reduce file size compared with CBR if the lower limit is set low enough, but bitrate settings have to be well chosen, since sound is also to be taken into account. Any suggestion for anything else than the DVD2SVCD defaults ? I have been disappointed in the quality of the MPG2 file produced for Disney's Tarzan, which has quite a lot of blockiness as soos as there is some action for example. Is there any use of modifying the settings (image quality, antinoise, number of passes...). From 3 to 4 passes I notice no difference, with or without antinoise: no difference...

bbMPEG: this mixes the extracted/encoded sound with the extracted/encoded video, right ? Is also the moment where permanent subtitles are inserted ? This seems to be the only technique for me.

Subtitles: oh my... Between all techniques, I have found none that makes subs that can be turned on/off during play on my standalone player. Standalone player issue ? I don't know, as apparently the subs won't work when the movie is played on a computer either.

CD Image: I hears I-author was the best and easiest... well the first times I used it, it would open tens of instances of itself, reporting all kinds of errors, which turned out to be related to too high bitrate settings. When finally I got it to make .cif files for me, it took me a little while to burn them correctly, and to my great joy, I could play them in PowerDVD4.

But... in my Philips DVD951, I only got the cover image, then the "change disc" logo, and nothing else. When I play the same disc in Heresoft's SthSVCD2001, the content movie is ok, but I don't get a menu ... I can just jump from one DVD chapter to another.

I think I am close to having a few usable movies, but the path was steep. Many thank to all who have taken the time to make DVD2SVCD, to write FAQs and guides, and who answer so friendly to posts from people who don't have a clue, and don't have much freetime to spend reading all the available documentation, and doing experiments.

BroKnBones

mrbass
14th May 2002, 16:27
Don't be so discouraged...it was rougher for me when I started. I hadn't a freakin clue about frameserving, encoding, etc. It's true back in the old days you could ask more freely many questions. However, the thing that has changes is there are so many faqs, guides, books, q&a that so many redudant questions aren't necessary anymore. (in response to what a noobie has to go through)

shrek uncheck anti-noise filter

tarzan try field B or ivtc (one chapter at a time to find which one is correct)

permanent subtitles are encoded in the video stream

subtitles never have worked for my pioneer 434 ...no complaints though

have a look at these bitrates for SVCD here
http://www.dvd2svcd.net/svcd/

gerti67
14th May 2002, 16:35
Hello BroKnBones,

This illustrates I hope the fact that :

1) I am most certainly incompetent
2) there is so much to read and learn that even "easy" automated tasks can be like hell. It's definitively 2) ;)

It really takes some time to fully understand the whole process and the traps in it. So don't worry abaout it (yet).

Here are some hints to your questions:

1) Please always use the internal routines for the ripping step - they work in 99% of all conversions - so no need to use Smartripper - in fact this can cause some problems.

2) You're right with the bitrate issue - try to set it to 1000 (Min) if you encounter stuttering.

3) With the bitrate settings - hmm - the defaults are usually pretty good but if you want more quality try to raise the Max. avg. bitrate to 2400 instead. So there's more room for the encoder but this will produce higher peaks also - so be careful. In general Anime is a hard task for the encoder so you need a higher bitrate especially when the source is in 4:3 fullscreen format - a higher noise filtering might help as well as the BilinearResize and a lower Image quality priority.

You know it's hard to say: this is the best setting - for those low bitrates that are used with a SVCD you can't say that - it really depends on the source movie. But you will get a feeling for it if you've done some test with different settings on the same movie.

4) bbMPEG: You'r quite right it muxes audio/video and non-permanent subtitles together. Permanent subtitles are encoded into the movie by AviSynth.

5) Subtitles: do a search on "philips subtitles" - seems they have some issues with selectable subtitles - you will get many hits on that.

6) CD Image: You can try to use VCDXBuild instead and burn the "foolproof way" (see the stickies above) or use VCDEasy - for me they work like a charm.

So to sum it up - don't give up. ;) It's worth the time you have to invest and do a seach in the forums on "philips SVCD" - it might give you more hints.

HTH,
Gerti

Labersack
16th May 2002, 04:45
as apparently the subs won't work when the movie is played on a computer either
Until now there is no software-player which can show non-permanent subtitles on the PC.

but I don't get a menu ... I can just jump from one DVD chapter to another
What kind of menu do you mean? With DVD2SVCD you won't get any menu, only title-screen, change-Cd-picture and chapters. You also can add selectable subs and different audio streams (languages), but no menu.

...don't give up, you're on the right way...

mrbass
16th May 2002, 06:43
Until now there is no software-player which can show non-permanent subtitles on the PC.

I think you meant 'Even now' or 'There still isn't a software-player which can show non-permanent subtitles on the PC.'
correct?

BroKnBones
16th May 2002, 10:06
Well thx everyone for your valuable support and comments.

I understand now that I won't get any menu, I had done a few SVCDs with my own home video footage in Nero 5.5, and I found the menus very cool, displaying whatever frame I chose from each inserted clip...

Now back to the movie. I finally have encoded Unbreakable but I guess I will have to work more with the bitrate settings. I chose min 300, max 2400 and min avg 1600, which made a movie of 2.5 GB, in four 80 min CDs. Hmpff.

I guess the min avg is a bit high, but the visual quality is almost perfect (=DVD-like), with permanent subtitles.

http://kotisivu.raketti.net/brokenbone/unbreakable.jpg

I used I-author to make images, that were converted with CDmage, and mounted in Daemontools for viewing (SthSVCD) and burning the first CD (CDRWin5).

Now (aaaaarghhh...), I can't believe it. SthSVCD plays the image just fine, but the visual quality is not as good as PowerDVD. However, PowerDVD4 crashes when I try to play from the mounted image. If I insert the burned CD, I can play it in PowerDVD, with a perfect image, but the sound is out of synch, and the same is true when I play it on my standalone DVD player.

Why is the sound out of synch on the CD when it is correct on the CD image and in SthSVCDs... sounds like a medieval mystery to me.

BroKnBones

smiller667
16th May 2002, 21:12
Check the sthsvcd video settings. Mine had some really strange defaults (including echo on the audio?!) - you would have to check the "SuperVCD Display Settings", "frame display" seems to give the best results.
Also just to clarify the role of bbmpeg - it just multiplexes the audio and video (if applicable, the video already contains "burnt-in" permanent subtitles), not the selectable subs. The latter is done either by Winsubmux or the I-Author multiplexer ...

Labersack
17th May 2002, 03:22
@mrbass
You're correct, that's what I want to say. Sorry, English is a foreign language to me...