Many thanks to Sascha for the clarification and useful information.

1 ffmpeg could be used to create FLV video from a wide range of formats
2 FLEX, ming(PHP), openlaszlo (LZX compareable to FLEX) could be used to create 
swf on the fly. 
3 AJAX/Flash front end.

>> there is also a java api for that i think.andy may u could make a 
>> containerclip thats able to handle your commands,

I'm sorry, but what do you mean here by a java api? based on openlaszlo  to 
handle commands to create swf on the fly?

4 It seems that Red5 is not suitable for our needs. How to delivery the FLV 
files? a normal file?

Thank you!


-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Sascha
Sent: 2006年9月5日 17:23
To: [email protected]
Subject: Re: [Red5] Red5 possible for a simple online author system?


MCG GU Xiangguo schrieb:

hi see my comments marked by ######
> Hi there,
>  
> We are planning to delivery a simple online authoring system,
> which allows users to upload pictures and videos and place the uploads 
> along the timeline. The server is either to composite a swf file 
> according user commands collected by a AJAX Client or a Flash Client 
> frontend, or to compiste the picutures and videos together to build a 
> FLV file. Some SDKs are availabe to composite FLV from a wide range of 
> video formats and pictures, such as On2 SDK. But On2 SDK is not free :((
###### ffmpeg is free u only need to compile it and ffmpeg is able to 
create flv from a wide range of formats.

>  
> To summary, the features are:
>  
> Frontend:
> 1 upload pictures and video
> 2 place them along the timeline(different layers??)
> 3 maybe some transform effects(using SWF file??, impossible in FLV?
> cuepoint helps?)
###### what u whant is FLEX, ming(PHP), openlaszlo (LZX compareable to 
FLEX) .... eg. create swf on the fly
there is also a java api for that i think.andy may u could make a 
containerclip thats able to handle your commands,
i did that once for cms like flash, its a bounch of work but  that has 
nothing to do with rtmp or remoting.

>  
> Server:
> 1 Build a FLV or SWF file. ( a room for one composite session??)
###### red5 does not transcode for that u whant to install ffmpeg and 
convert the medias

> 2 Delivery the files to users as FLV stream or SWF file. (SharedObject
> for FLV in a Red5 Room??)
>
###### uhm, may i get you wrong but:
flv= flash video format
swf=shockwave flash
shared Obeject = object that has been saved localy or on the server as a 
file using conected with AMF from WITHIN a awf
this shared object can "jold" arrays, strings, numbers, objects, xml but 
no medias, eg movieclips, sounds or pictures.

> Could Red5 help us implement the server side features in an easier
> way? I mean the interactions between the AJAX/Flash frontend.
###### yes and no, red5 alone> no
> For the composition of pictures and videos,
###### no
> is it possible to implement the Scope/Room Handlers to build SWF/FLV
> files using some open source libraries?
###### yes, if you know how to build in a c programm(ffmpeg) into a 
javascoource it is possible, but as i mentioned u could also make a red5 
application
call advising the ffmpeg to convert a source.
>  

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