AVSEQnn.DATgreenspun.com : LUSENET : Video CD : One Thread
I checked the MPEG Audio/Video Tracks of VCD, that is AVSEQnn.DAT and found that they seem to be RIFF files because the first four bytes of the .dat files are "RIFF". I also found that there are 28 bytes data between two packs of the files. Because these data are not defined in the MPEG specification, I don't know what they mean. I can't find them in VCD v2.0 specification, neigher. Could anyone give me some suggestion? Thanks.
-- Chun-Hung Lin (firstname.lastname@example.org), August 28, 2000
The .dat file includes some additonal bits for error checking --- same way of audio CDs. Therefore, the .dat file is always longer than the original .mpg In other hands, Windows always wrappes the VCD stream in a RIFF/CDXA format.
-- Roberto Maureira (email@example.com), August 30, 2000.
-- esra yC=lmaz (firstname.lastname@example.org), October 31, 2000.
-- bs (email@example.com), December 31, 2000.
There's a useful utility that strips microsoft's RIFF encapsulation so you have a true MPEG file.
It can be found here: http://www.vcdimager.org/pub/vcdimager/contribs/cdxa2mpeg.c
NOTE: Don't send email to the email address above. It goes to /dev/null. Send to: chris^at^digitekdesign^dot^com.
-- Chris Allen (firstname.lastname@example.org), December 22, 2003.