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  1. I'm wanting to backup dvd to cd.

    I want 50-55mins on a 80min cd. But with vcd & svcd i get bad quality, and with dvd the file size is huge.

    tried using sefys templates, but the quality suffers. they're real good for getting pornos on one 80min disc :P but not action movies etc.

    Yes I'm a noobie. I'm battling through the forum, but it's heavy going.

    any simple suggestions???

    ps. encoding time is not a big concern. 8-10 hours for 60 mins is ok.

    Athlon 1.4GHz 512Mb RAM IBM 7200ata100 46Gb HDD bla bla bla
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  2. hey e-mail me i will hook you up, you will get the best setting and sound for only 55 min of movie, shit i hope all my movies was 55 min
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  3. Are you using TMpgEnc?

    Use the bitrate calculator on this site to come up with average and high bit rates for the duration you wish to encode (i.e. 55 minutes). Ensure your set to "2-Pass VBR" using those bitrates, and that Motion Estimation = High.

    Do IVTC (tutorials on doom9.org) if the original was shot on film. If it's video camera footage (as some porn is), disregard and just make sure the field ordering is correct.

    Seriously, even CBR SVCD doesn't look THAT bad. But you should get great results with 2-pass VBR and High quality motion estimation.

    VCD is pretty bad at 55 minutes/80min CDR. I would really stick with SVCD when possible.

    Is it possible to define what "bad quality" is? Are you seeing washed out color, lack of fluid-like-motion, garbled sound, stuttering, or artifacting? Defining what "bad" actually is usually answers the question by itself...

    For instance, for fluid like motion, either use HQ Motion estimation or play with the IBPI settings (yuch!). For washed out color, ensure you aren't transcoding YUV->RGB->YUV. For garbled sound, check your codec. For stuttering, lower your bit rate. For artifacting, raise your bit rate.

    People used to be amazed at the quality of VCD (after living with postage stamp computer video). Some people feel the quality of DVD bites and won't settle for less than HDTV. And some feel HDTV is a waste and that everyone should have their own IMAX home theater. There are those that believe anything less than reality is just not good enough. Personally, I am of the '60s mentality: Even REALITY isn't good enough!!!

    So, What does BAD mean?
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  4. by bad i mean really blocky, washed out or too dark colour. a little jerky too sometimes, depending on the settings.

    audio seems to be fine, even down to 128kbps. it doesnt SEEM to make a difference to file size.

    i'm 'testing' one minute of the movie with various codec to get about 13mb file. 13 x 55 is about 700mb ish :).
    thus the movie will be on about 2 cd's, one cd per hour. however, svcd always seems to give 18mb ok quality or less at shitty quality.

    original movie format is usualy from DvD. hollywood type quality. svcd seems to stretch the picture vertically, and i cant seem to get rid of the letterboxing, even when i crop it. vcd has a better fit, but is too small for my taste.

    bitrate calculator. i'm using it, but it seems to be too high a setting. and still gives bad quality. over the whole movie, will the file size be correct?

    i fiddled with IVTC but i notice the loss in framerate. i'll check doom9, as i didnt know what i was doing :)

    what is IBPI? the gop thing? what is that? i dont know what it is or how it works. i have fiddled, and have had some ... interesting ... results.

    i tried to do a YUV 4:2:2 but everything went green. how do i maintain the color?

    also, interlacing is annoying me. seriously bad combing. I tried to de-interlace with the double setting, but got a big file. i tried even frame, but lost frame rate.

    mmm imax. i have a friend determined to buy a projector for his next tv...but i think dvd is fine quality, when done properly - early dvds had like blocky smoke etc, but now they seem much better.

    but i'm a pleb.

    thanks for the help guys, keep it coming.

    ps. i'm using dvdecryptor, dvd2avi, tmpengc cos it seems easy and i dont know any better
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  5. SVCD allows you to fit ~800MB MPG onto a 80 minute CD-R, so you have roughly an additional 100MB (12%) to work with. The reason is it is using a different mode than regular data CDs.

    De-interlacing can (will always?) cause a decrease in vertical resolution, as it's basicly taking an average (theres a bit more too it, but that's a topic for a book).

    If your source is film (as most hollywood stuff is, and even a fair amount of the fun stuff), IVTC is where you want to be spending some time. It decreases the frame rate to 24, but if you do it right, it is the 24 frames per second of the original film. No interlace, no jitter, primo stuff. The only real problem is that TMpgEnc seems a little buggy and when it comes to utilizing source range and IVTC at the same time, so you have to split later on. The DOOM9.ORG toutorials on IVTC are invaluable, I hope to see some here as well soon.

    Before I forget, when using IVTC, select "progressive" vs. Interlaced as the source. It seems (but I haven't measured) to be a little faster.

    If the original DVD played back on a TV is letterboxed (on a 4:3 regular TV), select 16:9 Display as your Source Aspect Ratio. If it is full screen, select 4:3 Display as your Source Aspect Ratio. Always remember to select Full Screen (Maintain Aspect Ratio) as the destination. This will give you the best results. As far as cropping, I've never done it in TMpgEnc.

    Software DVD players seem a little friendlier on bad IBPI (GOP) settings.

    In DVD2AVI, just save the project (a .d2v file). In TMpgEnc, just load the .d2v as your video source. You should get great quality and no transcoding. Be sure to also load the seperate WAV file for the audio.

    VOB2Audio seems to work great for extracting the audio. I'm currently trying one with DVD2AVI doing the audio to save a step. I won't know any results until tommorow (it's a very long batch).

    IVTC to remove the interlaced frames can give you more bandwidth to encode usable frames. DVD players can do a 3:2 pull down on 'em just fine, so there isn't much sense in using your bits for the extra interlaced frames. And well, it looks WAY nicer on the software DVD players or progressive scan DVD players.

    It's impossible to encode information that didn't exists in the original, so even if you had 1 terabit datarate with unlimited storage, the best you could hope for is the original quality. It goes downhill from there. I guess the only trick to any of this is to make the best of the bits you have.

    Using 2 Pass VBR, IVTC, HQ motion estimation, the full 800MB that SVCD gives you, and as little transcoding as possible are going to going to go a long way towards giving as "near dvd quality" as you can get on CD-R media. Other than that, I would defer to the experts (the guys who write the guides).
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  6. thanks for that.

    i've discovered that the most important part of the process is the ripping.

    if i match the settings of the original (DAR, Force Film, etc) then the encode is a piece of cake. and even with CBR or CBQ i'm getting 10.5Mb per minute, at outstanding quality.

    now, i'm getting audio sync problems. but thats a small thing only.

    my biggest concern is that tmpegenc's quality 'stutters' - is real nice then flickers blockiness for a second. I got none of that with CCE but CCE is hard to use...
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  7. 55-60min per disc is perfectly reasonable for a widescreen movie(ivtc, multipass vbr). i'd place full-screen(ivtc, multipass vbr) between 50-55min & ntsc(multipass vbr) between 45-50min
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