Can I have mulitple bitrate stuff on one CD?

[fmctm1sw]

You know, like a tv episode as a standard VCD with 3 of four copies at different bitrates. I would have a menu that looked like this.

1. show @1150 kbs
2. show @1500 kbs
3. show @1800 kbs
etc, etc, etc......

Kind of testing my DVD player at different bitrates.

[adam]

Sure you can do it but technically it won't comply with the VCD standards. The first track, at 1150k, should play regardless but there is no guarantee with the other ones.

[telemike]

If they are all the same MPEG spec. All MPEG-1 for example. I am even just dumped multiple mpegs onto a data cd and I can play it in my apex dvd player. Comes up with folders for mpegs and i can play them albeit with no playback control.

[fmctm1sw]

Sure you can do it but technically it won't comply with the VCD standards. The first track, at 1150k, should play regardless but there is no guarantee with the other ones.

Right, that is pretty much my point. I am going to look into XVCD. I have an old burner, so I'd rather just eat the CD-R cost. Thanks

If they are all the same MPEG spec. All MPEG-1 for example. I am even just dumped multiple mpegs onto a data cd and I can play it in my apex dvd player. Comes up with folders for mpegs and i can play them albeit with no playback control.

Yes, they will all be MPEG-1. Bitrate is mainly the thing I want to check out. I've done what you said with pictures. Boy, there is about a million way to get pictures on your TV. I got the old AD-1100W that plays about anything....

[Nelson37]

Long, long ago, while doing MANY, multiple-file CD-RW test encodes, I found that certain sequences of files would cause errors. Each file would play if first on the disk but some sequences of files would not play correctly. I spent quite some time confirming this as I thought I was going crazy when an encode method I had noted as giving good results failed in a second or third comparison test. I was trying lots of variations but mainly bitrate, GOP, resolution, interlacing, etc., all Mpeg-2 and mostly CVD or above.

These were not burned as VCD, just mpg files on data disk. The same files that played fine 1 -2 -3 would fail if reversed to 3 -2 -1, or 2 - 3 - 1, but the FIRST file would always play OK.

I am sorry I do not remember exactly what caused the issue, as I recall it was using a hi-bitrate 720x480 triggered it but I really can't say for sure.

So if you are doing a lot of short comparison test files, or mixing file types, if one doesn't work try playing in different order.

[EddyH]

My own DVD player was fine with all sorts of nonstandard files in any order (written as a v2.0 VCD), only thing was, you had to make sure they were at least a certain size (i dunno, maybe the equivalent of 10 secs of normal VCD). So, very short, very low bitrate files did odd things, like starting halfway through and having bad picture. Those, and tracks with too high a bitrate, tended to make it crash as well. So go throw a load of 5-minute clips of the same thing at different test rates onto the same VCD, you'll get the results you're after but a few "hard" resets may be in order!

[vitualis]

The answer is "yes", you can put multiple different "X" clips on one disc.

Indeed, the Official VCDHelp.com PAL/NTSC Demo Video-CD has a number of XVCD clips for testing this very thing.

Regards.