How do I fit 800 mb on an 80 minute CD??

[scrapper01]

Hey guys and Gals,

Newbie here,

I have been reading that I can fit 800 - 820 MB on a 80 minute CD. Well I can't figure it out. I am trying to burn 799 MB with the latest version of nero and it keeps telling me I don't have enough space. Am I supposed to do something special??


Thanks in advance for any help

[pinoy2201]

you have too enable the option to overburn

[scrapper01]

I tried that, but I still get the space error. Maybe you could post a little step by step.

Does anyone know exactly how many megs I should be able to get on an 80 min CD?


still in need of help.

thanks in advance

[[STV]Cyberdemon]

hi, i had a similar problem, i tried to burn an 710 mb
mpegfile an a 74 min medium. when i dragged my file into
nero (in vcd-mode) the file enlarged to over 80 minutes.
i had my mpeg encoded with tmpeg, it was about 900 mb.
my settings were 880 kb/sec for video and 160 kb/sec for audio, so the size was way more than i exptected (710 mb).
i demultiplexed the streams and multiplexed them again (just video and audio streams, but not the padding stream) and my new filesize was 710 mb.
i think, that when i imported it in nero, nero automatically created a padding-stream, whick kicked the size of the mpg above 710 mb.
maybe this padding-stream also causes your problem, btw. what exactly is a padding-stream ?

[Greg12]

because of CDFS and it's File Allocation Tables, it is not possible to fit 700megs on an 80minute CD.

The CD file system requires space and they way it writes data makes it impossible to "burn to the brime"

This is only possible when using the VCD file system, which can only be used with MPEG files.

[4star]

I just burned a 700 mg file which became a 804 mg file when nero burned it. i turned on over burn and set it to 82 minutes and it let me do it. not sure how much higher to go. it let me get 45 minutes of SVCD. Now to lower the bitrate and see what still looks good on TV. on a computer is acceptabel but on the TV it looks great so far.

[vitualis]

@ Greg12: There are reasons why you can't fit 800 MB on an 80min CD (you can definitely fit 700 MB though) as CD-ROM (i.e., MODE1 or MODE2 Form1) but not your reasons.

@ scrapper and cyberdemon: The MPEG files as written onto a S/VCD must have each "packet" aligned to the sector size used on the disc. If it is not aligned, then it cannot be burnt onto the disc. Now when Nero sees this, it pads (adds zeros) to the stream to force it to fit. This can be a problem, especially if you are using non-standard settings (i.e., cyberdemon) as the padding can significantly add to the filesize.

To prevent this, you should use TMPGEnc "MPEG Tools" to remultiplex your MPEG -- with the setting on "MPEG-1 Video-CD (non-standard)". This will correct the pack size of your source file so that Nero won't mindless pad it when you use it.

Regards.

[Sefy]

Wow wow guys, in Mode2 of course you can fit 800mb on a 80min CD, heck, I do that all the time, and god knows I got loads of CD's like that. and in Mode1 i've burned loads of 700mb into the 80min CD, that's not even overburning.

[[STV]Cyberdemon]

thx, the non-standard option in tmpeg worked for me, my vcd now got the size, i calculated for it, thx

[SiCN]

Aren't VCDs burned with a block size of 2048 bytes per block? And normal data discs at 2353 bytes per block? I think that could explain your problem with not fitting 800MB on a 80 Minute disc. It's quite valid to say that an 80 Minute disc holds 700MB, but as a VCD the block size is smaller and so the disc comes to 800MB. Try burning with Mode 1 (2048 bytes) rather than 2353 bytes (which u use, when you make a backup copy of your favourite game, which you definitily don't wanna lose ).

/Daniel

[vitualis]

<TABLE BORDER=0 ALIGN=CENTER WIDTH=85%><TR><TD><font size=-1>Quote:</font><HR size=1 color=black></TD></TR><TR><TD><FONT SIZE=-1><BLOCKQUOTE>
On 2002-01-08 07:38:14, SiCN wrote:
Aren't VCDs burned with a block size of 2048 bytes per block? And normal data discs at 2353 bytes per block?</BLOCKQUOTE></FONT></TD></TR><TR><TD><HR size=1 color=black></TD></TR></TABLE>

No, its the other way around.

MODE1 or MODE2 Form1 (CD-ROM) sectors have 2048 bytes of user data per sector.

MODE2 Form2 sectors (as used in S/VCD for the video tracks) have 2324 bytes of user data per sector.

There are 360,000 sectors on an 80min CD. Do the math and you can work out total capacity...

Regards.
_________________
Michael Tam

<font size=-1>[ This Message was edited by: vitualis on 2002-01-08 07:49:21 ]</font>

[SiCN]

Right, sorry. Seems logical.

[davemoore]

HI, can you help - I tried copying a couple of cd's which were only 80 min 700mb, but when I copy it tells me not enough disk space and I am trying to copy to the same size disks. I copied to hard drive and in the mpegav folder was a file avseq01.dat file which was almost 800mb in size.
I'm not much of a tekkie - so any basic help would be appreciated.
I've tried with Adaptec easy cd creator and copier and also windows xp burning software.
I was told by the person who gave me the discs to copy that he did nothing special when he copied - just dragged & dropped in Nero.

thanks

[Craig Tucker]

What is the playtime of the VCD exactly, it may be that the originals are very slightly overburned, as an 80 minute disc can actually only hold 79 minutes and 57.72 seconds. At least the ones I have can. If I wanted to burn 80 minutes exactly I would have to overburn.

[davemoore]

Hi
Play time is just a little over 77 mins - what I can't get my head around is that the file size is just under 800MB but fits on a 700MB disc (although I can't do it). I've heard of overburning but 100MB seems a lot to me.

rgds
Dave

[Craig Tucker]

Fitting (nearly) 800 mb on a 700 mb CD in mode 2 is not overburning. Vitualis has posted many times explaining the differences between mode1 and mode2 and why you can fit more data on a disc using mode2. Search the forum for his posts on mode1 and mode2 burning and all will become clear :P

[davemoore]

Craig

Many thanks for your help - will do.

Rgds
Dave

[wchang99]

kind of on the same note, does tmpgenc work for grossly non vcd-standard mpegs? I'm trying to remultiplex one for burning with nero, and tmpgenc won't open it. It's 320x240, not one of the standard vcd resolutions. it doesn't fit any of the templates in the wizard, of course...

thanks...

You can fit 800 MB on a 700MB CD if you are burning a bin/cue image.

[wchang99]

Thanks mudflap, I looked into creating a bin out of my nonstandard (oversize) mpeg. I found one app, vcdimager, which unfortunately also pads out the mpegs just like nero does, which leads things right back where they started (>800mb)...

Is there any app you know of like tmpgenc that will remultiplex a non-standard mpeg (an xvcd basically)?

Thanks again...

wchang99

[Craig Tucker]

Is there any app you know of like tmpgenc that will remultiplex a non-standard mpeg (an xvcd basically)?

Thanks again...

wchang99

I know of one thats just like TMPGEnc, its called TMPGEnc

[mats.hogberg]

wchang99:

which unfortunately also pads out the mpegs just like nero does, which leads things right back where they started (>800mb)...

This is caused by the fact that the original MPEG is not multiplexed as a VCD MPEG.
Fix this with TMPGEnc:

• Start TMPGEnc and cancel any wizard that starts.
  Go to the File menu, and select MPEG Tools.
  Select the (Simple) Multiplex tab (not sure about the difference between simple and not simple - haven't noticed any difference...).
  Choose MPEG-1 Video-CD (non-standard) for VCD or MPEG-2 Super VideoCD (VBR) in the Type: drop down.
  Click Browse to the right of Video input: and select your MPEG.
  Now, Audio input: shuld be set to the same file automatically.
  Choose/enter output filename.
  Click on Run.
  Have a cup of jolt.

Now, you have a (S)VCD compliant MPEG that wont get padded in the authoring process.

/Mats