[Red5] Streaming real-time generated content (not capturedvideo)

Atulesh MORE atuleshrao at gmail.com
Tue Apr 1 08:19:40 PST 2008 

Hello I m Atulesh
     I hace successfully implement Java RTMP client, Kindly please tell me
that, is it possible to get stream data from this RTMP java client. I havae
connected to Red5 server through this RTMP client and also getting response
.

On Tue, Apr 1, 2008 at 6:41 AM, Rui Pereira <rfapereira at gmail.com> wrote:

> @Ignacio: yes, that would work - but then you are not using any video
> codec, which means less compression and higher bandwidth requirements on the
> connections. Right?
>
> @Andy: the second approach was more in the line of what I was thinking.
> But like I said, is there a (ready to use) Java RTMP client available? I see
> a RTMPClient class on Red5 0.7, but as far as I can see, it can only be
> used for remoting....
>
>
>
> On Tue, Apr 1, 2008 at 3:22 PM, Ignacio Lopez <ignacio.lopez at gmail.com>
> wrote:
>
> > Another approach would be to "record" a binary representation of the
> > drawings that your app is generating (ie a binary array of pixels, or
> > something like that), and then transmit that binary representation one by
> > one in the correct sequence to a Flash Player using red5....more like and
> > event notification system. But then, the Flash player should be capable of
> > regenerating the drawing using the binary representation....
> >
> >
> >
> > On Mon, Mar 31, 2008 at 8:41 PM, Andy <bowljoman at hotmail.com> wrote:
> >
> > >  Hello,
> > >
> > >
> > > 'But how do you "draw" on it from, let's say, Java? (or even AS3 for
> > > that matter). Won't the output always go the standard graphical output (the
> > > screen?).'
> > >
> > > I use interprocess communication, either named pipes, shared memory,
> > > or simple socket and loop back connection.
> > >
> > > AS3 can connect to local host sockets. Java , I believe, can use both
> > > named pipes and sockets.
> > >
> > > Basically, think outside of the box for this....
> > >
> > > Your virtual device device will call you for an image, and you can
> > > choose whatever you want to convert to raw ARGB pixel bytes, and copy the
> > > buffer over to the other process.
> > >
> > > From what I understand, making a device driver for this in Linux is
> > > easier, but I do not know where to even begin.
> > >
> > > VFL 'video for Linux , from what I can tell, is probably 10 years
> > > behind Directshow.
> > >
> > > VFW 'video for windows' and ActiveMovie are no longer used for new
> > > applications by anyone and was replaced by Directshow long ago.
> > > It may be noted that the new windows API for multi-media does not nor
> > > will it replace 'capture drivers' in Directshow any time soon, or in any
> > > foreseeable future.
> > >
> > > Now, to provide you with a cross platform solution idea......
> > >
> > > 1. Create Java client that can connect to red5 and publish a stream.
> > > 2. Create a means to compress raw pixel buffers to a flash/red5
> > > compatible format.
> > > 3. Using a timer, make as accurate nano-resolution-clock as you can
> > > make.
> > > 4. Using this timer, trigger image acquisition, compression , and then
> > > start issuing Video and Audio Events over rtmp.
> > >
> > > 5. Play the stream in a regular flash subscriber.
> > >
> > >
> > >
> > >   -----Original Message-----
> > > *From:* red5-bounces at osflash.org [mailto:red5-bounces at osflash.org] *On
> > > Behalf Of *Rui Pereira
> > >  *Sent:* Monday, March 31, 2008 4:08 PM
> > > *To:* red5 at osflash.org
> > >  *Subject:* Re: [Red5] Streaming real-time generated content (not
> > > capturedvideo)
> > >
> > >   Andy, thanks for the suggestion.
> > > I'm going to read a bit more into it to get the details, but at first
> > > thought, one thing I don't get: using a virtual capture device as a video
> > > source of a Flash broadcaster app is clear. But how do you "draw" on it
> > > from, let's say, Java? (or even AS3 for that matter). Won't the output
> > > always go the standard graphical output (the screen?).
> > >
> > > Btw, any suggestions for a similar approach in Linux?
> > >
> > > Cheers,
> > > Rui
> > >
> > > On Mon, Mar 31, 2008 at 11:47 PM, Andy <bowljoman at hotmail.com> wrote:
> > >
> > > >              Hello,
> > > >
> > > >
> > > >
> > > >             What I have done is created a windows WDM capture driver
> > > > 'video capture device' which is loaded to flash player for the broadcasting.
> > > >
> > > >
> > > >
> > > >             I then feed it images which I compost in either another
> > > > flash application, c++ or whatever I happen to dream up via cross-process
> > > > communication (named pipe/socket).
> > > >
> > > >
> > > >
> > > >             For instance, I can easily take a 'Video' object in AS3
> > > > and draw the BitmapData into the WDM driver for compression and broadcast.
> > > >
> > > >
> > > >
> > > >             I can point you to the base code that everyone uses for
> > > > the WDM driver if you want...
> > > >
> > > >             'Vcam'
> > > >
> > > >
> > > >
> > > > http://tmhare.mvps.org/
> > > >
> > > >
> > > >
> > > >             In addition to that wonderful resource, I would advise
> > > > seeking answers to WDM programming and Virtual Device Streaming at this
> > > > level to...
> > > >
> > > >
> > > >
> > > >
> > > > http://forums.microsoft.com/MSDN/ShowForum.aspx?ForumID=129&SiteID=1
> > > >
> > > >
> > > >
> > > >             The direct show development forum.
> > > >
> > > >
> > > >
> > > >             Andy Shaules
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > -----Original Message-----
> > > > *From:* red5-bounces at osflash.org [mailto:red5-bounces at osflash.org] *On
> > > > Behalf Of *Rui Pereira
> > > > *Sent:* Monday, March 31, 2008 11:45 AM
> > > > *To:* red5 at osflash.org
> > > > *Subject:* [Red5] Streaming real-time generated content (not
> > > > captured video)
> > > >
> > > >
> > > >
> > > > Hi all,
> > > >
> > > > I just started playing around with Red5, so I apologize in advance
> > > > if I'm missing something...
> > > >
> > > > I went through the docs, got my first sample app running, and I
> > > > understand how to stream FLVs and even the ideas behind publishing a web
> > > > camera video stream from the Flash client to the server (so that others can
> > > > subscribe).
> > > >
> > > > But I have a different scenario in mind, and I'm stuck on how to do
> > > > it. Suppose I have a Java application that generates graphics and sound by
> > > > itself (for instance, using Java2D). I would like to publish this through
> > > > Red5 so that anyone with the Flash client could subscribe and watch it live.
> > > > How would this be achieved?
> > > >
> > > > I figure that there are two possibilities:
> > > >
> > > > 1) The code that generates the graphics and sound is built into the
> > > > Red5 application directly
> > > > 2) Do it on a separate application, and publish it to Red using RTMP
> > > > (same way a Flash client would do using a webcam)
> > > >
> > > > For both approachs, the main problem is how to "video stream"
> > > > something that is not video in the first place (like FLVs or capture cards,
> > > > etc...). For instance, I know that FFMPEG can be used to generate FLV, but
> > > > in this case, I have no file to serve as input. And even if that was
> > > > possible, how to "grab" the output in such a way that could be streamed real
> > > > time in Red5?
> > > >
> > > > For approach 2 (which seems better because it doesn't put extra load
> > > > on Red5 itself), the problem is that I can't seem to find any RTMP client
> > > > (except for Flash itself).
> > > >
> > > > Any tips or ideas would be great.
> > > >
> > > > (Btw, congratulations on Red5 - this is one cool project ;)
> > > >
> > > > Thanks,
> > > > Rui
> > > >
> > > > _______________________________________________
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> > > >
> > > >
> > >
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