Bad preview of 4k video

[Evert Vorster]

Hi there, Mehdi.

To second Camille's suggestion, the first thing to try would be to lower
the preview resolution. This setting does not affect the rendered video,
but does provide a much smoother editing experience on older hardware. When
editing 4K footage on my machine, I use a resolution of 540p for my
monitor. This is near VHS quality, if you are old enough to remember that
format.

Proxies are lower resolution copies of your original footage that Kdenlive
can create automatically, and represents another level of smoothing of the
editing process on older hardware. Unfortunately proxies create all sorts
of problems in Kdenlive. Drawbacks include extra disk space used as well as
the time it takes to generate. For your own sanity, please avoid using
proxies if you can.

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


On Sun, 28 Jun 2020 at 14:24, Camille Moulin <camille.moulin at free.fr> wrote:

> Hi Mehdi,
>
> Thanks for the  kind words about kdenlive :-).
> About your performance problem, on short term you can try to lower down
> the preview resolution (in the lower left corner of the monitor, see
> picture attached.)or you can enable proxies.
> On the medium/long term, the goal is to be able to use GPU, but this is
> quite a large task and needs also to be implemented at MLT's level.
> Cheers,
> Camille
>
>
> On 28/06/2020 13:05, Mehdi Haghgoo wrote:
>
> [...]
> I have a small problem though, Kdenlive is bad at previewing in-edit
> tracks especially for high-res videos like 4k and when layering multiple
> tracks. It just plays with a lot of hiccups. I have low end laptop: core i5
> 6200u dual core with Intel 520 graphics.
> Is there a way to improve the performance in future versions or are there
> any plans?
> I have not tried kdenlive with a discrete graphics. Maybe, these issues
> are not present on powerful systems.
>
>
>
>
>
> Again thank you for your great work. I would love this message to be seen
> as a query and suggestion at its best.
>
> Looking forward to hearing your thoughts.
>
>
> Best regards
> - mehdi
>
>
>
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