From: Rob <[EMAIL PROTECTED]>
Subject: RE: Rmbatch questions
Jenaro:
The rm file won't be given its file headers until it is completely
written, so you can't play it in the RealPlayer until then (the same
applies to archive files written out by the RealServer or RealProducer)
- it's a completely different mechanism from playing a live stream. If
you want to be able to view the video immediately, you'll need to pass
the video through a RealServer as well as sending it to the file, so
that the player can connect to the server.
Here's another approach that might work for you - have your
RealProducers (whether you control them through RMBatch or not) stream
the encoded video to a RealServer; you can use its archive capability to
store clips according to file time or file size. Then you have your
3-min clips, _and_ you can view the live stream.
I worked on a project with a setup something like this, using the Osprey
1000's ClearVideo codec (but with only one encoder, so far).
I'd be interested to know what you eventually do. You might be able to
set up a simpler solution using the SDK, if you have the know-how and
time.
~Rob
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Robert Whelan NesTek Development Corp.
Software Engineer 6780 Pittsford-Palmyra Rd.
[EMAIL PROTECTED] Fairport, NY 14450
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> -----Original Message-----
> From: RealForum [mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, September 07, 1999 2:06 PM
> Subject: Rmbatch questions
>
>
> From: Jenaro =?iso-8859-1?Q?=C1lvarez?= <[EMAIL PROTECTED]>
> Subject: Rmbatch questions
>
> Hello. I am developing a system based on two Osprey 1000 video capture
> cards. Both cards must work simultaneously, encoding the real-time
> video introduced through these cards. To utilize the hardware-encoding
> feature of the video cards, a special video codec must be
> selected, one
> that comes with the Osprey 1k software.
>
> I am not using the RealProducer itself, but the rmbatch tool
> which comes
> with it. Thus, I have two .BAT files running in two different MSDOS
> windows, generating clips of a few minutes long.
>
> The problem arises when I try to play the clips as they are being
> generated. I try to do it with RealPlayer, but it won't show anything.
> The funny thing is that, if I have only one session working (i.e. only
> one rmbatch encoding at a time, with one of the cards idle),
> RealPlayer
> does work. There must be some kind of relation between the RealPlayer
> and the encoding process, but I cannot figure it.
>
> Of course, it is possible to visualize a preview screen at
> the same time
> as the encoding process takes place, RealProducer itself does it, but
> how can I accomplish it without using RealProducer? Is it possible?
>
> Thank you in advance, regards,
>
> Jenaro Alvarez
