more speed improvements coming

[Evert Vorster]

The idea behind monitor scaling was to aid in deep effect stacks,
especially when transforming or transparency.

Up to this point, the effects were applied to the full resolution video,
then scaled down to be displayed in the monitor. As this is very much a
single threaded CPU bound feature, it was a great bottleneck for deep
effect stacks. I was correcting 4K drone footage for fisheye and color, and
adding a title clip on top of that was... well, horrible for performance.

The speedup on normal clip playback is a bit unexpected, but might make
proxy clips almost obsolete.

I have not tested it yet, but that was the general idea. :)

Evert Vorster
Awesome Chapters Tours
http://www.awesomechapters.com
Tel: +264 (0) 811477690


On Wed, 15 Jan 2020 at 23:43, farid abdelnour <snd.noise at gmail.com> wrote:

>
>
> Em qua., 15 de jan. de 2020 às 16:42, Alistair Riddoch <
> alriddoch at googlemail.com> escreveu:
>
>
>> I have tested it with a 45 minute project, and there is a
>> noticeable performance improvement. It's not a massive improvement for me,
>> but I'm not using proxy clips yet, so I'm probably not getting the best
>> case improvement. The feature clearly works, as the resolution reduction is
>> obvious in the monitor.
>>
>
> I have noticed a drastic improvement in my initial test. I added two luts
> and a blur effect and at 1/4 resolution it plays smoothly without proxies.
>
>>
>> No sign of any issues.
>>
>> Thanks for this! Any performance improvement is much appreciated!
>>
>>
>>>
>>> [1]
>>> https://cgit.kde.org/kdenlive.git/commit/?id=31c339ff90d4796b7dfaa36896a21a989d146212
>>>
>>> [2] https://bugs.kde.org/show_bug.cgi?id=369080
>>>
>>> --
>>> 1111.1010.r.i.1101|n.o.i.s.1110|i.m.1010.g.1110|مقاومة
>>> fsf member #5439
>>> usuario GNU/Linux #471966
>>> |_|0|_|
>>> |_|_|0|
>>> |0|0|0|
>>> <a href="http://www.gunga.com.br">gunga</a>
>>> <a href="http://www.tempoecoarte.com.br">tempoecoarte</a>
>>> <a href="http://www.atelier-labs.org">atelier-labs</a>
>>> <a href="http://www.mocambos.net">rede mocambos</a>
>>>
>>
>>
>> --
>> Alistair Riddoch
>> alriddoch at googlemail.com
>> http://alistairriddoch.org/
>>
>
>
> --
> 1111.1010.r.i.1101|n.o.i.s.1110|i.m.1010.g.1110|مقاومة
> fsf member #5439
> usuario GNU/Linux #471966
> |_|0|_|
> |_|_|0|
> |0|0|0|
> <a href="http://www.gunga.com.br">gunga</a>
> <a href="http://www.tempoecoarte.com.br">tempoecoarte</a>
> <a href="http://www.atelier-labs.org">atelier-labs</a>
> <a href="http://www.mocambos.net">rede mocambos</a>
>
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