From: "Gurpratap Virdi" <[EMAIL PROTECTED]>
Subject: Back-To-Back Capture
Hi,
I am using the Real Producer Plus ActiveX control in my application to
capture and encode files in real-time from my capture card. I need to
capture video in chunks of 30 minutes however there must not be any time gap
between the two files eg. if I have one capture from 6-6:30 this capture
should stop precisely at 6:30 and the next one should begin at exactly 6:30
so I can later paste these clips together without loosing any time I have a
few questions about this:
- At the moment when I call the stop function in the Real Producer Control,
it takes about 13 seconds for it to stop before it can start capturing
again. I believe this delay is caused because it is writing data from the
temp file to the destination file. Is there any way I can get around this
problem?
- To get around the start-stop overhead I set the capture time to a large
value (say 5 hours) and every half an hour I make a copy of the temp file. I
then paste a header from an existing rm file (without this real player does
not recognize the file) to the beginning of the temp file. When I play this
file in Real Player it works great, however when I try to cut out the
segment I need using rmeditor, rmeditor gives me the error: "The specified
input file is invalid" Why does rm editor fail to open the file even though
real player can play it fine?
- Assuming I can get around the 13 sec gap problem, when I try to paste 2
files together, at the junction the audio starts immediately however there
is a lag before the video appears. I believe this is because real player
waits for a key frame. Is there a way to get around this interruption in
video?
- Is the rm file format public? Where can I get it from?
Thanks in advance!!
Gurpratap Virdi
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