file size big

[Shaorin]

I plan to burn a vcd on a 700mb 80min disc but the file size 771mb but it is 77mins long. Is it okay to overburn? will it like cut some parts off

[jimmalenko]

just burn as per normal - no overburning will be required.

See here - https://www.videohelp.com/faq#740

80 min CD
VCD/SVCD/XVCD mode
Mode2 Form2 = 2324 bytes/sector = 360 000 * 2324 = about 800 MB on a 80 min CD.
Data mode
Mode1 Form1 = 2048 bytes/sector = 360 000 * 2048 = about 700 MB on a 80 min CD.

(a 80min CD has 75 sectors/s = 80min CD * 60 * 75 = 360000)


74 min CD
VCD/SVCD/XVCD mode
Mode2 Form2 = 2324 bytes/sector = 333 000 * 2324 = about 740 MB on a 74 min CD.
Data mode
Mode1 Form1 = 2048 bytes/sector = 333 000 * 2048 = about 650 MB on a 74 min CD.

(a 74min CD has 75 sectors/s = 74min CD * 60 * 75 = 333000)

[Cobra]

When burning data to a disc, your computer lays on a lot of error protection. This eats up the available space for data. VCDs and SVCDs are burned in a way that uses very little or even no error protection - you don't mind a slight glitch in video as much as losing a precious photo or document! This extra space freed up by having to error protection is why you can author more data to an SVCD or VCD than is actually labelled on the CD-R. They just assume it will be used for data.

If you are really unsure, just try it out on a CD-RW! I can guarantee you won't need to overburn though!