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  1. Member Vchat20's Avatar
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    Ok. so today was my first run-in with miniDVD's. I had just finished a small music video I had been working on. roughly 4 minutes long and in DV format (premiere export). I was going to run it through tmpgenc like I usually do and get an SVCD compatible file out of it. my curiosity got the best of me, and I encoded it in dvd format. so in the end I had myself an 8mbit m2v file and a pure wav file. found a tutorial on here for dvd authoring and used ifoedit to get the nexessary ifo,vob,etc. files. took those and burned them as a minidvd in nero.

    this works just fine. powerdvd plays it fine and whatnot. even my set-top dvd player (off-brand "craig" player) reads it as a "minidvd". the problem is that I think it cant read the cd-r fast enough because the video is very choppy as well as the audio.

    My simple question is if anyone knows what the max. usable bitrate is for minidvd's? or is it all dependant on the dvd player?


    P.S. I should also add, after further searching on the subject, that this is a CD-R that I burned, but with dvd-video content on it in the form of vob/ifo files.
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  2. Member ZippyP.'s Avatar
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    Originally Posted by Vchat20
    My simple question is if anyone knows what the max. usable bitrate is for minidvd's? or is it all dependant on the dvd player?
    Absolutely dependant on the player. Many (most?) won't play them at all. With DVD's being so affordable, my question is...why bother?
    "Art is making something out of nothing and selling it." - Frank Zappa
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  3. Member Vchat20's Avatar
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    #1: currently dont have the personal finances to get a dvd burner (yes. Im cheap. sorry if that annoys anyone. )
    #2: with the size of these videos, a dvd would be a major waste. with the 8mbit video I mentioned above, it barely used half a cd
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  4. Serene Savage Shadowmistress's Avatar
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    I'm not sure if there is a mini-dvd max biterate, but the max biterate for any normal dvd would be around the 9000-10,000 kbps mark, depending on the player. That's audio and video combined. If it goes higher than that the dvd player may choke.

    You mentioned that your 4 minute video takes up half the disk so I'm guessing it's really good quality with a high biterate for audio and video. What's the biterate of your m2v? What's the biterate of your pcm? Add them up and what do you get per second? If it's more than 9000 kbps, that's your problem.
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  5. Member mats.hogberg's Avatar
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    I'd think max bitrate would be SVCD-ish. The problem is, that most drives in players are single or double spin - which is far too slow for getting 8000 kbps from a CD!

    /Mats
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  6. VH Veteran jimmalenko's Avatar
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    Originally Posted by Shadowmistress
    You mentioned that your 4 minute video takes up half the disk so I'm guessing it's really good quality with a high biterate for audio and video. What's the biterate of your m2v? What's the biterate of your pcm?
    Sorry to be the grammar / spelling police, but the word is bitrate (as in, the rate of bits being used) and it really gets my goat to see it desecrated in this manner

    "Biterate" is probably a term to describe the speed at which pacman moves or something

    Originally Posted by Vchat20
    so in the end I had myself an 8mbit m2v file and a pure wav file.
    = 8000kbps video, 1536kbps audio I'm guessing.

    Originally Posted by Shadowmistress
    Add them up and what do you get per second? If it's more than 9000 kbps, that's your problem.
    I think everyone is on the right track re: data rates. AFAIK the max SVCD bitrates were derived from assuming that a drive capable of reading these could sustain a minimum of at least 2X in CD-speed lingo (about 3000kbps IIRC).
    If in doubt, Google it.
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  7. Member Vchat20's Avatar
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    thanks. that pretty much confirmed it I guess. this was merely a curiosity on my part anyhow. As it is now, im fine with SVCD. But I may very well upgrade to a dvd burner in the future and then Ill have access to these higher bitrates.
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  8. Serene Savage Shadowmistress's Avatar
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    Well, Excuuuuuuuuuuse Me!


    @Vchat20: I'm glad you got your biterate problems sorted. I'd suggest encoding just the audio to an AC3 file with a smaller biterate so that you're under the 9000 total, and try burning it onto a CD-RW to test on your dvd player to see if you truly need the low SVCD biterate or if you can use the higher DVD biterate.



    Yeah, that's right... I'm just a rebel. 8) :P
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  9. Banned
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    Look at all those posts, none of which really answered the original question.

    As Mats pointed out, the thing to watch out for here is the speed of the drive. I had an old Apex player that with hacked firmware would play miniDVD, but the bit rate had to be 4500 Kbps or less. Anything higher and it couldn't spin fast enough to play it correctly. So what you need to do for best compatibility is to keep the bit rate on miniDVD to 4500 or less. If you exceed this bit rate, the odds of success go down. I have a miniDVD that I made for testing purposes with a bit rate of about 8000 Kbps or so and it caused my Apex to have all kinds of problems. I remember seeing a post once on another forum where someone did the calculations and basically anything over 4500 requires the drive to spin more than 2x.

    Not to state the obvious, but most standalone players won't support miniDVD at any bit rate. Players that can play raw MPEG files (players that play DivX seem to usually support this) can play this format, although they probably won't recognize it as a DVD and you'll have to play it as a raw MPEG file. My Philips DVP-642 plays my old miniDVDs this way.
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  10. Member wulf109's Avatar
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    The maximum bitrate a miniDVD can play without "chop" is player dependant' My expierence is that 5000 is the maximum miniDVD will play reliably on standalone DVD players that support miniDVD playback. 5000 maximum bitrate would need an average bitrate of 3000-4000.
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