[Bf-committers] Re: Screen dump - OpenGL content

[Toni Alatalo]

Brecht Van Lommel wrote:

> of the times I need it is to show a new feature. And I haven't found
> a fast free screen recording utility either for Mac.

snapz is not free, but i am just abusing this possibility to wonder if 
it works well for opengl capture - it seems to have been good otherwise.

> I modified some async upload code I did earlier to do download
> instead. It uses the pixel buffer object extension, and the idea

hee :)

> http://users.pandora.be/blendix/pixelrecord.zip

cool. i guess both will be good to have, video recording and event log.

so has something happened with the event refactor now?

> Brecht.

~Toni

>
>
> Rui Campos wrote:
>
>> Camstudio works great under Windows, but you don't have a similar 
>> solution
>> in Linux.
>> You do have Wink and Istanbul, but they aren't very good solutions 
>> right now.
>>
>> Istanbul is dead slow when grabbing OpenGL and Wink crashes sometimes 
>> and
>> isn't that fast either.
>> I was hoping to get something faster for recording Blender under 
>> Linux as
>> none of the mentioned options work for me.
>>
>> And yes, I think lukep is recoding the event system, meaning this work
>> would probably be lost. But this isn't done yet, so it might worth the
>> effort and if a good API for python was built it could be reused 
>> later on.
>> On how slow it could be, I don't know, haven't came up with a way to 
>> play
>> the events, only record them.
>>
>> On the OpenGL recording, it would be needed a good machine, yes, and
>> that's why I asked for a faster way to do the screen dump as the 
>> overhead
>> right now is just on the glReadPixels method call.
>>
>> My problem is that even on a Core Duo 1.83Ghz machine, neither Istanbul,
>> nor Wink work fast and reliably.
>>
>>
>>> Congrats for the new baby :)
>>
>> ? I think I missed this one !?
>> Do you know something I don't ....
>>
>>
>> Cheerz,
>>
>>     -- Rui --
>>
>>
>> ----- Original Message -----
>>
>>> Rui Campos wrote:
>>>
>>>> Hi all,
>>>>
>>>> My current knowledge only allows me to do this type of recording.
>>>>
>>>> I'm already able to record most of the keys / mouse events on a 
>>>> stack, but
>>>> my problem is playing them back, moving the mouse and pressing the 
>>>> keys
>>>
>> again, if I could do this I would write a simple Python API and script
>> for
>>
>>>> it.
>>>> The problem is that I didn't find a nice way to move the mouse to a 
>>>> given
>>>> location and issue keyboard commands. If anyone can help me I 
>>>> rather do
>>>
>> this instead.
>>
>>>> -- Rui --
>>>>
>>> Just a couple of questions to take with a grain of salt since they come
>>
>> from a man who knows just enough to be dangerous ;)  :
>>
>>> In the case that you go for and event stack :
>>>    -isn't the event system being recoded by Lukep right now ? If so how
>>> much of your efforts would soon become obsolete if any ?
>>>    -replaying the events, without any undo stack, can take a loog time
>>> can't it ? Much longer than a video sequence.
>>>
>>> In the case you go for OpenGL recording :
>>>    -how much overhead will this add to Blender ? Won't it slow down 
>>> to a
>>> crawl on most machines ?
>>>  A possible solution to this would be to suspend the recording while
>>> Blender is working hard and blocking the user from accessing the UI 
>>> anyway.
>>>
>>> Now can you tell me what is your motivation ?
>>> Until now I just couldn't shake off the impression that yours is a
>>
>> solution in quest for a problem.
>>
>>> I make a lot of tutorial for the company where I work, some are about
>>
>> Blender, and I use Camstudio with its lossless codec (less overhead at
>> recording time) with litterally perfect ease.
>>
>>> Many other solutions exist so why ?
>>>
>>> If nothing else your answers will make my reading this thread a lot 
>>> more
>>
>> comfortable.
>>
>>> Congrats for the new baby :)
>>>
>>> Jean
>>>
>>>
>>>
>>
>>
>>
>> _______________________________________________
>> Bf-committers mailing list
>> Bf-committers at projects.blender.org
>> http://projects.blender.org/mailman/listinfo/bf-committers
>>
>>
>
> _______________________________________________
> Bf-committers mailing list
> Bf-committers at projects.blender.org
> http://projects.blender.org/mailman/listinfo/bf-committers