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Maver
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divx videos? VCD?
Jun 1st, 2006, 4:44pm
 
A long time back when i was a member i had made a comparason of all the divx size compressions and all that but now i can't seem to find my chart anywhere, or even info on divx for that reson, the net seems to hold it no longer. I haven't been able to find any good divx tutorials, and i haven't been able to find any VCDs tutorials, i have a disc that will play vcd but i hear there was a better one where the pain was it didn't have disc sawping but you could fast foward and rewind using the joystick. are those tutorials still around.
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Curtiss Grymala
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Re: divx videos? VCD?
Reply #1 - Jun 1st, 2006, 7:20pm
 
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Re: divx videos? VCD?
Reply #2 - Jun 2nd, 2006, 5:46pm
 
what the divx version that i have to install? what does it work best with, because i doupt that divx 6 is gona work here.
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Curtiss Grymala
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Re: divx videos? VCD?
Reply #3 - Jun 2nd, 2006, 7:11pm
 
DivX 5.0.2 was the last version that worked properly with DCDivX, I believe.  You should be able to get that from http://www.oldversion.com/
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Re: divx videos? VCD?
Reply #4 - Jun 2nd, 2006, 11:17pm
 
thank you, what about VCD?
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Curtiss Grymala
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Re: divx videos? VCD?
Reply #5 - Jun 3rd, 2006, 10:01am
 
GypPlay is the only homebrew VCD player I know of, and it requires WinCE libraries (which are illegal to distribute).

Basically, you copy the DAT file from your VCD into the folder with GypPlay, and make your disc (I'm pretty sure there's a special filename you have to give your DAT file, but I'm not 100% sure, as I've never tried it, since I don't have the WinCE libraries).
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Re: divx videos? VCD?
Reply #6 - Sep 30th, 2006, 4:30pm
 
Just out of curiosity is divx basically the same as VCD? Because I've come across video files which supposedly fit on to a regular CD and have probably been split into two files to spread onto two CD-Rs.  I noticed once in Nero when I did this that such a file effortlessly converted to VCD format for divx and I think it looked the same sort of quality.  Is divx exactly the same quality as VCD and does it just have better compression, that's all? Thnx.
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Re: divx videos? VCD?
Reply #7 - Oct 1st, 2006, 2:24am
 
Curtiss Grymala wrote on Jun 3rd, 2006, 10:01am:
GypPlay is the only homebrew VCD player I know of

There's one by Bero and another one by 138, but those tend to skip sound. GypPlay is the way to go.

Mark_Thompson wrote on Sep 30th, 2006, 4:30pm:
Just out of curiosity is divx basically the same as VCD?

Not at all. DivX has a better compression of files, which means better quality in a smaller filesize compared to VCD. But when it comes to Dreamcast playback, I prefer VCD because the DivX player doesn't support "high quality" (actually just some poor) DivX videos.
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Re: divx videos? VCD?
Reply #8 - Oct 2nd, 2006, 3:37am
 
there is also VC/DC by OneThirty8

also i found  uDCdivx to be better than dcdivx.
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Mark_Thompson
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Re: divx videos? VCD?
Reply #9 - Nov 18th, 2009, 8:43am
 
Okay I haven't been here for a while, but I remember this place and I have a question and that question is so better compression at the same or better quality is going to need better processing power in order to playback; that's why VCD didn't have that then even if one format is comparable to another there's still going to be pixellation until you get up to dual layer or HD format? So if your format is anything less than that then you'll lose something by way of digital artifacts if you convert it to a different format even if it's got better compression and is better quality? Even if one format's the same as another digital artifacts may appear in another area of picture owing to the different compressions adding more?
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Re: divx videos? VCD?
Reply #10 - Nov 21st, 2009, 9:21pm
 
Mark_Thompson wrote on Nov 18th, 2009, 8:43am:
Okay I haven't been here for a while, but I remember this place and I have a question and that question is so better compression at the same or better quality is going to need better processing power in order to playback; that's why VCD didn't have that then even if one format is comparable to another there's still going to be pixellation until you get up to dual layer or HD format? So if your format is anything less than that then you'll lose something by way of digital artifacts if you convert it to a different format even if it's got better compression and is better quality? Even if one format's the same as another digital artifacts may appear in another area of picture owing to the different compressions adding more?

Hello again Mark, I'm not exactly sure what you are asking but I'll take a stab at answering.

Really high quality video playback does require better processing power to an extent, but really it depends on the actual software that is used for playback of the video file, some video software is very resource hungry whilst others are fairly 'light' on processing power. With the Dreamcast it all depends on three main things really:

1 - The Dreamcast itself.
2 - The capacity of a CDR.
3 - The limitations of the software.

HD and BluRay are currently setting the modern standards for visual entertainment, and there is no way in hell that the Dreamcast can compete with anything like that. At best the good old DC can be comparable to VHS, VCD, and near DVD quality for video playback. As for DC software there's quite a few video players available (but all have their own limitations).

All DCEvo releases (wether they are samplers or complete movies) are created for a 'balance' - that means they will play on a Dreamcast, the video sits in the 'safe zone' of the software limitations, and the CD size won't kill the bandwidth. Video playback on the Dreamcast can be better than anything we have released over here, but it takes trial and error to get the absolute best audio and visual data output from the DC without crashing the software that is available.

Modern codecs for video are producing really high quality output with relatively small file sizes, but we do not have the software for the Dreamcast to play those movie files (just imagine how good the quality would be with an MP4 player where you could just download the movie and burn straight to CDR without re-encoding).

The original source video file is important when creating any compressed video from it, you need the source file to have very good quality before you start. Any codec used after that will create some sort of artifact when compression is used, so the better the source to begin with, the less artifacts are present when the file is compressed to the format you want.

Hope that's answered your question Mark, if not, feel free to post back anytime.
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Re: divx videos? VCD?
Reply #11 - Nov 24th, 2009, 8:04pm
 
Mark--I'm not sure if your question is really about encoding video in general, or if you're looking to see what will give you a watchable result on the Dreamcast.  But, assuming you want a watchable result on the Dreamcast...

I have updated VC/DC once or twice since you posted in 2006.  You might find that version 0.2 will give you acceptable playback quality, depending on what you expect out of a player.  I find that most standard VCDs that I have thrown at it are watchable.  SVCD is not going to give a good result because the bitrates and resolution are a bit much for the Dreamcast to handle (and the code could still be made much more efficient, if I ever have the inclination to do another major rewrite).  I also found that the KVCD notch quantization matrix will allow you to compress your videos quite a bit, using much lower bitrates for video, and as long as you use a VCD-standard (or lower) resolution, the result is very watchable on the Dreamcast or on a regular DVD player.  Also, you'll be able to use full-quality audio (44.1 kHz, etc) without a problem.  There are KVCD templates available for TMPGEnc which should make the re-encoding process fairly easy.

Just my two cents.  Take that for what it's worth--I'm obviously going to be biased and want people to find my program useful, but it is much more mature than the version that was available in 2006.

As for DivX, we pretty much have what was available several years ago.  I've often thought about doing another, multi-format video player, but the amount of work it would require to design a new player using different libraries than I used for VC/DC has kept me from really giving it much effort up until now.
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divx videos?
Reply #12 - Jul 13th, 2010, 5:55pm
 
I just downloaded the file , "superman" from the media section and when I try to extract it it says, "CRC failed in superman.cdi. The file is corrupt.
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Re: divx videos? VCD?
Reply #13 - Jul 16th, 2010, 10:47am
 
yungplaya wrote on Jul 13th, 2010, 5:55pm:
I just downloaded the file , "superman" from the media section and when I try to extract it it says, "CRC failed in superman.cdi. The file is corrupt.

Thanks for reporting the problem, I will take a look at the file on the server, I will replace the file for you if it is corrupted.
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Re: divx videos? VCD?
Reply #14 - Jul 16th, 2010, 11:54am
 
Also it was, "The Most Dangerous Game" can you let me know when you replaced both of theses.
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