From: Jeff Ayars <[EMAIL PROTECTED]>
Subject: Re: Standards: RTP, RTSP, MPEG, etc.
At 04:29 PM 8/11/99 -0700, RealForum wrote:
>From: "Jon Mittelhauser" <[EMAIL PROTECTED]>
>Subject: Standards: RTP, RTSP, MPEG, etc.
>
>So I am looking into standards based streaming media and the various
>options. Since Real is one of the main proponents of RTSP, etc I am
>assuming that they have fairly full support. However, I am still a
>little unclear of what the level of support is.
>
>1) It appears that there is only a 0.6 referenence implementation
>available. Are there plans to have an update to this? Is there
>documentation on the changes between 0.6 and 1.0? I can't find a 0.6
>RTSP spec to even compare the protocols.
>
I cannot comment on the reference implementation other than there are no
plans for RealNetworks to do this work at this time.
>2) If somebody was to implement an RTSP embeded server, what would be
>the requirements to use G2 to view the content?
> *) What transports are supported? RTP? Anything else?
RTP and RDT (a proprietary data transport I only mention for completeness)
> *) Does G2 assume the use of SDP?
Not exactly. Media description plug-ins can be written for the client for
other descriptions, though we haven't tested with anything but SDP in 2
years so you are a bit in the dusty attic going there.
> *) What actual file formats can be viewed via this?
Theoretically, any format for which there's a renderer identified by mime
type. In practice, the current SDP plug-in errors out parsing any RTP
payload we don't currently support but we hope to fix that soon.
> If I was to
>stream an MPEG2 video file via RTP over an RTSP url, would I be able to
>do this with G2? E.g. rtsp://foo:8554/bar.mpg
Yes, we intend for this to work. There may be problems currently but we
intend for this to work. Please bring any issues you find to our attention
using our SKD support forum. Visit service.real.com and submit a support
request under the SDK products category.
There is a University in Germany that has a RTSP/RTP server that serves
MPEG that has successfully interoperated with our client, I believe they
are on the forum so they may reply, if not you can search back through the
archives for RTSP/RTP questions to find them.
