Bad preview of 4k video

[farid abdelnour]

Hi

To third Camille's suggestion I also recommend to reduce the preview
resolution. Ever since that feature was introduced I stopped using proxies.
I can't recall a bad experience with proxies besides the disk space,
fortunately for 20.08 JBM added an interface to manage the generated
proxies. (See attachment)

Cheers




Em dom., 28 de jun. de 2020 às 11:48, Evert Vorster <evorster at gmail.com>
escreveu:

> 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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