openshot.developers team mailing list archive

[Jonathan Thomas <jonathan.oomph@xxxxxxxxx>]

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.

Thanks!
-Jonathan

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-+
>