openshot.developers team mailing list archive

[Dan Dennedy <dan@xxxxxxxxxxx>]

On Fri, Feb 19, 2010 at 6:56 PM, Jonathan Thomas
<jonathan.oomph@xxxxxxxxx> wrote:
> Dan,
> Thanks for the suggestions.  The "sdl_preview" worked fine.  However,
> I was unable to figure out the consumer.set('refresh', 1).  For
> example, if the video is paused for a few seconds, any resize to the
> screen will make the video area disappear (not redraw).  I figure the
> .set('refresh', 1) method is supposed to tell the consumer to draw a
> frame of video back to the sdl window?  Are we sure that "refresh" is
> the correct setting?  It does not appear to have any effect.

Yes, refresh is correct. Are you telling the consumer to stop or
setting the speed to 0 to pause it?

>
> On Fri, Feb 19, 2010 at 3:59 PM, Dan Dennedy <dan@xxxxxxxxxxx> wrote:
>> 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-+
>>
>



-- 
+-DRD-+