Size, Time, Or Both

[UechiJ]

I know this has probably been asked about a 1000 times before but I will ask again.

What determines the amount of time than can be put on a vcd?

Is it file size...

or, the length of the file in minutes...

or, whichever exceeds the limit of the cdr first?

Any input would be greatly appreciated, thanx.

[MaDmiZe]

On VCD its file size....For VCD an 80min CDR can hold slightly less than 800mb...but VCD standard is roughly 10mb a minute...so 80min x 10mb/min = 800mb....on non-standard VCD I put 135 to 140minutes on each 80min CDR...but thats non-standard and still only takes up around 775mb of space.

[UechiJ]

MaDmiZe,

Thanks. So I assume that you lower the data rate to get that many minutes on one cdr? If you do how do you get it to play in a stand alone dvd player? I tried experimenting with different rates but the vcd wouldn't play. Well...it would as long as the data rate didn't exceed the standard of complience (I think anyway, it's been awhile now). So if I want to burn a vcd at a higher bit rate then I should proably change the format to a svcd or xvcd?

[MaDmiZe]

Yes...I lower the video and audio bitrate....but I have never had a problem playing any of them.....But I do have a Apex 1500 as a stand alone.
If you are talking about upping the data rates, then you may want to go SVCD...its standard is a max 2748 kbit/s video and audio combined (say the audio was 224kb that would leave 2524kb for video) but you may get only 35-40 minutes per CD. I think xVCD is just non standard VCD.

[UechiJ]

MaDmiZe,


Thanks that clears up a lot for me. I have but one more question. Does the vcd bitrate include audio like the svcd does, or is that only a svcd parameter?

Or like you typed it "its standard is a max 2748 kbit/s video and audio combined (say the audio was 224kb that would leave 2524kb for video) but you may get only 35-40 minutes"

Is this true of vcd as well. Sorry for the unorginization im getting very sleepy. will check back later

[MaDmiZe]

VCD has seperate bitrate requirements for video and audio...one does not affect the other....but for VCD the standard is fixed...change anything and its non-standard.
For SVCD as long as the bitrates stay within the confines mentioned...its still considered standard (as far as bit rates concerned)