[Red5] Adobe's private version of Flash supports Accoustic Echo Cancellation and Screen Sharing

[Naicu Octavian]

Hy Aaron  your findings are very interesting. I knew about the
screensharing but not about the echo cancellation.

I've posted your findings on the FlashMedia list too, we have been
discussing Adobe's policy on screen sharing for several years now!


On Sat, May 23, 2009 at 6:48 PM, Aaron Drew <aarond10ster at gmail.com> wrote:
> I can't guarentee the mac version operates in the same manner but I presume
> so. There is code in the launcher for Connect Pro that deals with the mac
> version. It looks like there is some sort of timing issue that only affects
> macs. It may be that the intstall happens in the background on the mac so it
> relies on periodic timer to get the ball rolling.
>
> Does the mac version open up in its own window? Thats the tell-tale sign in
> the PC version. The window itself is the standalone flash player and can
> exist without the browser being open from that point onwards. In any case,
> this is all quite frustrating... Guess this thread is running further off
> topic so I'll quiet it down a bit. Feel free to email me anything directly.
>
> On Sun, May 24, 2009 at 12:13 AM, Daniel Rossi <electroteque at gmail.com>
> wrote:
>>
>> On 24/05/2009, at 12:42 AM, Aaron Drew wrote:
>>
>>> To answer the question about the plugin / download:
>>>
>>> Acrobat Connect Pro runs either in "normal" or "enhanced" modes. The
>>> enhanced mode requires a "plugin" downloaded from within flash. This
>>> "plugin" is just an EXE file that gets executed when the appropriate command
>>> is issued so it could be anything. In this case, its a flash stand-alone
>>> player with lots of extra goodies like screen sharing and echo cancellation
>>> that no-one else is allowed to use.
>>>
>>> My guess is that Acrobat Connect Pro team wanted to use screen sharing
>>> and echo cancellation but flash didn't support it. They forked the flash
>>> code base (evidence of this is that the Acrobat Connect Pro executable
>>> contains references to AMP - Adobe Media Player. This is another "plugin"
>>> that adobe has recently released.) and added what they needed. To avoid get
>>> the thing out without causing security problems, they only allow signed SWFs
>>> to run. I used a hex editor to look at the files in question.
>>>
>>> My issue is that since adobe have already added support for these
>>> features, how can it claim flash is an open platform when the best of its
>>> features are only available to in-house projects it deems as legitimate.
>>>
>>>
>>
>> Ok thanks for the clarification, im guessing there is a mac version for
>> this too ? I have used a adobe connect session before and dont remember
>> seeing this download though ?
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