openshot.developers team mailing list archive

[Dan Dennedy <dan@xxxxxxxxxxx>]

On Fri, Feb 19, 2010 at 12:13 PM, Jonathan Thomas
<jonathan.oomph@xxxxxxxxx> wrote:
> Dan,
>
> We do not use melt for rendering, only to determine which audio and
> video codecs are installed.  We have a single video thread, that
> either hooks up to a sdl consumer for previewing or a avformat
> producer for rendering.  So, I'm not sure if I need to add the
> NO_VDPAU flag.  What would you suggest?

No, do not worry about it unless you want to give users a preference
setting to turn it off to aid with troubleshooting or workaround
incompatibility.

> We have a bug report on LaunchPad explaining how to upgrade
> libsdl1.2debian to version 1.2.14.  Other than that, we do not have
> much recommending that users upgrade.

OK, just wondering as a result of a Kdenlive support issue.

> I was unaware that the sdl_preview consumer existed. =)  You might
> have told me before, now that you mention it, but that sounds much
> better than the sdl consumer.  I had noticed that sdl just never lets
> up on the CPU.  I will see if I can't integrate the sdl_preview into
> version 1.1 of OpenShot, before we release it.

Yeah just .set('refresh', 1) when needed when paused and seeking or
adjusting effect param.

> Thanks for the feedback!
> -Jonathan
>
> On Fri, Feb 19, 2010 at 12:02 PM, Dan Dennedy <dan@xxxxxxxxxxx> wrote:
>> Are you running melt or a separate child process to render? If so, did
>> you heed my warning and set the MLT_NO_VDPAU environment variable?
>>
>> Finally, how are you recommending Ubuntu 9.10 users get the
>> libsdl1.2debian v1.2.14 from the luci repo that fixes the video
>> display issues on some systems?
>>
>> I will try to get around to some testing myself. One thing I noticed
>> recently is that you are using the sdl consumer and not the
>> sdl_preview. sdl_preview is not a perfect drop-in replacement - you
>> will need to add set-property calls to tell it when to refresh.
>> Basically, when you are paused, sdl continually updates the frame
>> using CPU during what appears to be an idle state, but sdl_preview
>> does not. sdl_preview also gets off of the XVideo port when paused so
>> another media player can obtain it for better quality video playout
>> making it more friendly in a multi-tasking desktop environment
>> overall.
>>
>> --
>> +-DRD-+
>>
>



-- 
+-DRD-+