VCD Bitrate

[kcjohnclark]

Ok Im kinda confused. Everywhere I look, it says for VCD 2.0 compliance, the bitrate must me 1.15mbits/s. Is this true? Or can I up the bitrate to whatever as longs as I keep it under the size restriction? From my personal experience, a few bits more (1.5 or 1.6 mbits/s) really helps the quality of my captures.

Just tell me if I can up the bitrate with ppl still being able to play the VCDs in their players.

Thanks in advance.

[Truman]

VCD NTSC (PAL) is 352x240 (352x288)/ MPEG-1 Video 1150 kbps / MPEG-1 Audio Layer-2 44,1 kHz 224 kbps
Everything else is XVCD, not all players can play that.

<font size=-1>[ This Message was edited by: Truman on 2001-08-13 08:17:56 ]</font>

[Phlexor]

I used to see 1150 kbps and 1152 kbps quoted as the bitrate for VCD, so I did a hell of a lot of looking up on the net and found that the MAXIMUM bitrate is 1151929 bps, which when show as kbps by many programs, is rounded to 1152. So basicly you can have any bitrate i suppose from 600 kbps (the minimum for mpeg1 *ithink*) up to 1151929 bps.

[Fragamon]

The spec for standard VCD compliance is 1150 kbps. Anything else is not to spec. However, most DVD players can handle more. (Check the compatability list for more details). Typically up to 2500 works for me on my Apex. Anything outside of spec is referred to as XVCD.

[Phlexor]

Then does that mean that VCDMUX that comes with the VideoCD 2.0 Toolkit will multiplex an out of spec mpeg1 video into a VCD system stream?

http://www.icdia.org/cdprosupport/vcd/vcd2x/vcd_specs.htm
(second spec from the bottom)

[kinneera]

Some DVD players will do very interesting things with high bitrates. I tried burning an MPEG at 4.6 Mbps to an XVCD once and played in my DVD player...remarkably, it attempted to display the picture, but simply couldn't process the huge chunks of data fast enough. The result? The video played, but it was all choppy.

Even more unbelievable, I burned an MPEG2 (!) stream onto a CD that was in all other aspects a VideoCD 2.0 structured disc, and my DVD player was perfectly willing to play it.

Just goes to show you, it pays poke and prod and test the limits of your DVD player...

[D_Knife]

A lot of DVD players max out at 2600kbps for MPEG 1 / 2 streams, the on-board logic "assumes" that since it's not a DVD or a MPEG 1 VCD it must be SVCD. And the max bitrate for SVCD is 2600kbps.