How big an mpg file fits on a 700mb CD-R?

[telemike]

I now that the mpeg-I file can exceed 700mb and still fit on a cd-r. How large is that? 740mb? Any formulas? thanks.

[Treebeard]

700mb cd-r will hold approx 800mb when burned as a VCD or SVCD (mode2) can overburn to 815mb depending on media.

[puertorican138]

This guide can help you:

http://www.vcdhelp.com/forum/viewtopic.php?t=135642

Hope That Helps!!! :P

[furball6969]

700 / 2048 * 2332 = 797

[Betamax]

700 / 2048 * 2332 = 797

Euh, wouldn't it be something like this :
700 / 2048 * 2352 = ...

Motivation:
For each written 2048bytes of an Mpeg, a CD-sector of 2352bytes will be used.
Even if one creates a cd-image with 2336byte-alignement (cue/bin in special cases, nero's nrg), the final cd will have always 2352byte-alignment.

To get the real figure, one should take care of (5 * 2352)MB which is used by the ISO-track of a S/VCD..

I usually can fit about 799MB movie onto a S/VCD, without having to overburn.

[energy80s]

795Mb without overburning. Once Nero adds the extra "overhead" files this comes up to 802Mb the standard capacity of a 700Mb CDR disc.

[furball6969]

Betamax:

This infromation is quite conclusive: http://www.vcdhelp.com/forum/viewtopic.php?t=135642&highlight=

[Treebeard]

700mb cd-r will hold approx 800mb when burned as a VCD or SVCD (mode2) can overburn to 815mb depending on media.

This is why i said approx & depending on media.

Lets stop beating a dead horse here.

[Betamax]

This infromation is quite conclusive: http://www.vcdhelp.com/forum/viewtopic.php?t=135642&highlight=

Thanks, didn't found that information before .

[sunmanking]

Hi,

I was wondering about it and...

700 MB (data) * 104*1024=734.003.200 bytes (data)

2048 bytes data = 2324 bytes (s/vcd)

( 734.003.200 bytes (data) * 2324 bytes (vcd) )/ 2048 bytes (data) =
832.921.600 bytes (vcd)

832.921.600 bytes (vcd) / (1024*1024) = 794,34 MB (vcd)

There you have it!

Now... what matters is not the MB but the minutes!
So let's have a look at the minutes then...

an 80min cd-r can ACTUALLY MORE THAN 700 MB. It holds
703,13 MB (data) which is 797,88 MB (vcd). THAT is what
REALLY counts. You can have a look at the how-to guide.

Greetings,

sunmanking

[stalker11]

I have a video that is almost 81 minutes, and the filesize is 748mb. It is not a standard VCD file, but instead, it has 128kbps audio and 1150 kbps variable bitrate video. I understand that it depends on the length of the video, which is 80:54.03, and when I try toasting it onto a disc, both with VCDEasy and Nero the image comes out over 85 minutes, I know i can't overburn that much. However, in the past, i fit over two hours of video on a VCD using lower bitrates. Since the filesize is 748mb, it should be like recording a 75 minute video. Also, I have in the past successfully recorded and played this type of video using VCD as my DVD players plays non standard discs just fine.

[sunmanking]

hi,

taking into account your video is 81m long... i think you
have two options basically:

1.- lower down the bitrate (and loose some quality)
2.- use 99m cd-r !! at first i was reluctant to use
these cd-r since i had heard they give lot of trouble.
not at all! after a few burnts i made myself up and
now whenever i want to put anything that won't
fit with a high bitrate on a 80m cd-r goes directly
to 99m. that easy.

sunmanking

[BMzx]

You can use Ulead DVD Studio 2.0 to make a VCD from a very large mpg.
It seems to go by the play length of the video rather than the size.
I can put a 1400 mb mpg on one cs since the play lenght is only 70 mins.
It seems to convert to about 10mb per min of video.

[sunmanking]

hi BMzx,

that seems to be one of the most discussed problems
with MF2 by Ulead, that it will reencode the mpeg file
to make it vcd standard compliant... but there's an
option to make non-standard vcd's too, i think.

greetings,

sunmanking

[stalker11]

I would prefer the route of higher compression, becuase to fit an extra minute wouldn't require a high decrease in bitrate, so the video quality wouldn't decrease noticably. However, when I encode the video on automatic mpeg stream, the filesize is correct taking into account the bitrate used. However, if the bitrate is lower than the standard VCD bitrate of 1150 and it is encoded as a VCD compliant mpeg or VCD non-standard (in TMPGEnc), the file will end up approx 10mb per minute, like a standard VCD. I also encoded a standard auto mpeg with the decreased bitrate (81min was 746mb) and tried the header change trick (used for changing SVCD files so they are compliant with VCD) and the file ended up 807mb. I could overburn the extra couple of mbs, but the image file that both VCDEasy and Nero make end up being 861mb. This happens regardless of whether I try to burn the disc using the 746mb file or the VCD standard 807mb.

(All files by the way were encoded using TMPGEnc)

[stalker11]

Alright, the problem is under control, I ended up re-encoding the video using TMPGEnc 2.53, previously I was using 2.59. For some reason, 2.59 cannot make VCD mpegs smaller than 10mb/m; not for me anyway. However, I encoded the same video using 1150 variable and 128 audio, the filesize is correct and the 81 minute video fits on 650mb cd, with overburn. And my dvd player plays it fine.

[bax2097]

The answer to the problem is to use KVCD templates. Find them here.

http://www.kvcd.net/guides/kguide/kvcdguide.htm#_Step_3._Encoding_1

By varying the CQ (Constant Quality) value in Tmpgenc you can encode as much video onto a standard CDR as you like. If you use the Ultra Low Bit Rate template 3 hours can be acheived in under 740 Mb.

As for playing on stand alone DVD player, I have to use VCD headers (Sony NS400D), but the player seems to play anything then.

Bax