Playing Mpeg 1 And Mpeg2 Files Back To Back - Visual Circuits ReelTime 2 User Manual

Playing MPEG 1 and MPEG2 files back to back: The
resolution switch from MPEG 1 files (342X240) to MPEG2
files (720X480) causes a "latent image" or a "quadrant
display" of the last played file's image. The only way to
perform seamless playback when using a playlist of files is
to insert an encoded "black file" with blank audio track,
between MPEG 1 and MPEG 2 files. The black MPEG file
preceding the playback file should be of the same standard.
In other words, prior to an MPEG 1 file the "black file",
with a blank audio track, should be MPEG 1 and vice versa.
Changing the driver parameter "InitOnOpen" to "1" may
also remedy this problem, as long as back to back
"seamless" playback is not desired. Each file must be
"loaded" individually prior to playing. (You can use the
Visual Circuits Driver editing utility "VccReg.exe" for
changing this parameter.) However, testing should be done
with this driver setting, as with all parameter changes, to
verify the overall effect on the presentation. Testing is
especially important in regards to cross-channel
synchronization. Incorporating a delay between files or
calling the "mpgblack" command, which is actually a
function call on the decoder card, will not solve the
problem.