[Kdenlive-devel] On-monitor effects

[Dan Dennedy]

On Sat, Aug 14, 2010 at 12:22 PM, Dan Dennedy <dan at dennedy.org> wrote:
> 2010/8/14 Hugh Tebby <hugh.tebby at gmail.com>:
>> I've tested it quite a bit, and it doesn't crash like it did previously.
>> Seems to be as stable as the previous red rectangle. One thing that is a bit
>> bothering is that when playing the timeline, there's a little "jump" when it
>> get's to a clip with pan&zoom effect. Other than that, seems perfectly fine.
>> Great job !
>
> First of all, yes, it is a great thing to have; good job. It works
> great on Linux, but still crashing on OS X. I will try to debug that.

I fixed the crash on OS X, but the on-monitor effects do not work on
OS X because I have not yet integrated a MonitorRefresh. I will take a
look at this, but it might be a while. In the meantime, I am OK with
you enabling on-monitor effects by default #ifndef Q_WS_MAC and
perhaps disabling the option in preferences #ifdef Q_WS_MAC.

>> There also seems to have been a massive slowdown recently, but I don't think
>
> This might be due to the way frame updates are delivered to the
> scopes. Unfortunately, it is an overhead whether scopes are visible
> and for each frame displayed in the monitor. This is somewhat
> complicated by the fact that Mlt::Frame is not a QObject; so it can
> not be queued between signal and slot on separate threads. So, I
> immediately convert it to a QImage, which can be queued. Other factors
> include the fact that it may need to convert YUV to RGB and then swap
> bytes to convert ABGR to ARGB.
>
>> it has anything to do with that. I can't play a simply DV file fluidly
>> anymore in Kdenlive (fine when playing with melt though...). It might
>> because of my computer, I've been fiddling around with graphics drivers and
>> such recently. Anyway, I'll check that more in detail when I come back from
>> my holidays in two weeks.
>> Cheers,
>> Hugh
>>
>> 2010/8/14 Dan Dennedy <dan at dennedy.org>
>>>
>>> On Fri, Aug 13, 2010 at 3:07 PM, Till Theato <root at ttill.de> wrote:
>>> > -----BEGIN PGP SIGNED MESSAGE-----
>>> > Hash: SHA1
>>> >
>>> > Hi,
>>> > as you might have noticed I added an alternative for editing geometries.
>>> > Instead of doing it with the little red rectangle it can now be done
>>> > directly on the monitor. While this is still work in progress everything
>>> > that could be done using our current GUI should also be possible using
>>> > the new one. Stability should also be OK now.
>>> > Is it okay for you guys if I change this new way to default (still
>>> > keeping the old one as a fallback)?
>>>
>>> last time I tried it on OS X, it was causing crashes, which I did not
>>> investigate (to avoid distraction). That was from an svn update made
>>> Oct 9. Please wait a few days, and I will give feedback from OS X and
>>> my i7 workstation running 64-bit as I have been eager to see this
>>> improvement.
>>>
>>> > regards till
>>>
>>> --
>>> +-DRD-+
>>>
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>
>
>
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