I'm confused, how much data can a 74 min CDR hold? 650? 700?

[DBR]

My 74 minute CDRs are stamped "650mb" on them. My 80 min CDRs are stamped "700mb" on them. But I've seen referenced to burning 700 and even more onto a regular CDR, without overburning.

I think it relates to the format you use ISO, UDF, type 1, type 2, ... but I don't understand the implications of choosing these options.

Which options gives the most storage on a CDR, without requiring Direct CD or something similar installed on the computer?

Thanks for any information demystifying this.

[lattedfw]

74 min/650MB CD-Rs will hold 74 minutes of CD-audio or video-CD format video. Those formats have a less robust error correction, so more space is available to store video/audio data. They will hold 650 MB of data with stronger error correction. If your data were a program, you can't risk having any errors in it (the program may not work). Video and audio is more forgiving and the players themselves have compensation built-in for missing or garbled data. The same applies for 80/700MB CD-Rs.

A ripped audio CD track is about 10 megabytes per minute of audio. A 74-minute audio CD would have about 740 megabytes of audio data, which won't fit in the 650MB data format, but will fit in the audio CD format where strong error correction is traded for less correction and more space.

That's how I understand it; I'm sure others can give much more detailed information on the differences in error-checking techniques/theory, etc.

[DBR]

Thank you , that helps a bit. If anyone can add more details re: what settings result in what CDR capacity, that would be helpful.

For example, does anyone know what settings to use in Nero to put a 720mb DivX movie onto a 74 minute CDR?