vcdimager: Video CD 2
1.3.2 Video CD 2.0
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About two years after the Video CD 1.1 specification came out, an
improved Video CD 2.0 standard was published in 1995. This one added
the following items to the features already available in the Video CD
1.1 specification:
* Support for MPEG segment play items ("SPI"), consisting of still
pictures, motion pictures and/or audio (only) streams was added.
Segment Items.
* Support for interactive playback control ("PBC") was added.
* Support for playing related access by providing a scan point index
file was added. ('/EXT/SCANDATA.DAT')
* Support for closed captions.
* Support for mixing NTSC and PAL content.
By adding PAL support to the Video CD 1.1 specification, the following
resolutions became available:
* 352 x 240 @ 29.97 fps (NTSC SIF).
* 352 x 240 @ 23.976 fps (FILM SIF).
* 352 x 288 @ 25 fps (PAL SIF).
For segment play items the following audio encodings became
available:
* Joint stereo, stereo or dual channel audio streams at 128, 192, 224
or 384 kbit/sec bit-rate.
* Mono audio streams at 64, 96 or 192 kbit/sec bit-rate.
Also the possibility to have audio only streams and still pictures(1)
was provided. The bit-rate of multiplex-ed streams should be kept
under(2) 174300 bytes/sec (except for single still picture items) in
order to accommodate single speed drives.
---------- Footnotes ----------
(1) in addition to the resolutions already defined for motion video,
also high resolutions are available for still pictures, which are 704 x
480 (NTSC Full D1) and 704 x 576 (PAL Full D1)
(2) Alas it seems, that for _strict_ Video CD 2.0 compliance, it's
required to pad the stream exactly to 1x muxrate. The Super Video CD
format does not have this flaw.
Info Catalog
vcdimager: Video CD 1
vcdimager: Known Video CD Flavors
vcdimager: Extended Video CD