[Kdenlive-devel] On-monitor effects

[Dan Dennedy]

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.

> 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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