Thanks Evert, <div id="yMail_cursorElementTracker_1593358673120">I have not used proxies, but as I understand from your comment, it would not do much good for me here. </div><div id="yMail_cursorElementTracker_1593358855784"><br></div><div id="yMail_cursorElementTracker_1593358857083">One more thing Camille, do you mean MLT does make zero use of GPU for video processing? If so, this seems quite a drawback, but then adding GPU might be extra work on different platforms like mobile, Desktop, etc. because of different GPU architectures. </div><div id="yMail_cursorElementTracker_1593359021555">Any thoughts? </div><div id="yMail_cursorElementTracker_1593359030494"><br id="yMail_cursorElementTracker_1593358660059"><br><div id="ymail_android_signature">- mehdi</div> <br> <blockquote style="margin: 0 0 20px 0;"> <div style="font-family:Roboto, sans-serif; color:#6D00F6;"> <div>On Sun, Jun 28, 2020 at 19:18, Evert Vorster</div><div><evorster@gmail.com> wrote:</div> </div> <div style="padding: 10px 0 0 20px; margin: 10px 0 0 0; border-left: 1px solid #6D00F6;"> <div id="yiv7519495314"><div><div dir="ltr">Hi there, Mehdi.<div><br clear="none"></div><div>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.</div><div><br clear="none"></div><div>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. </div><div><br clear="none"></div><div>Kind regards,</div><div><div><div class="yiv7519495314gmail_signature" dir="ltr"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>Evert Vorster<br clear="none">Awesome Chapters Tours</div><div><a rel="nofollow" shape="rect" target="_blank" href="http://www.awesomechapters.com">http://www.awesomechapters.com</a></div><div>Tel: +264 (0) 811477690<br clear="none"></div></div></div></div></div></div></div></div></div></div></div></div><br clear="none"></div></div><br clear="none"><div class="yiv7519495314yqt0068135565 yQTDBase" id="yiv7519495314yqt81475"><div class="yiv7519495314gmail_quote"><div class="yiv7519495314gmail_attr" dir="ltr">On Sun, 28 Jun 2020 at 14:24, Camille Moulin <<a rel="nofollow" shape="rect" ymailto="mailto:camille.moulin@free.fr" target="_blank" href="mailto:camille.moulin@free.fr">camille.moulin@free.fr</a>> wrote:<br clear="none"></div><blockquote class="yiv7519495314gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex;">
<div>
<div>Hi Mehdi, <br clear="none">
</div>
<div><br clear="none">
</div>
<div>Thanks for the kind words about
kdenlive :-).</div>
<div>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.</div>
<div>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.</div>
<div>Cheers,</div>
<div>Camille <br clear="none">
</div>
<div> <br clear="none">
</div>
<div><br clear="none">
</div>
<div>On 28/06/2020 13:05, Mehdi Haghgoo
wrote:<br clear="none">
</div>
<blockquote type="cite">
[...]
<div id="yiv7519495314gmail-m_7045233675553400879yMail_cursorElementTracker_1593341740210">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.</div>
<div id="yiv7519495314gmail-m_7045233675553400879yMail_cursorElementTracker_1593342000403">Is there a way
to improve the performance in future versions or are there any
plans? </div>
<div id="yiv7519495314gmail-m_7045233675553400879yMail_cursorElementTracker_1593342112904">I have not
tried kdenlive with a discrete graphics. Maybe, these issues are
not present on powerful systems. <br clear="none">
</div>
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<p><br clear="none">
</p>
<blockquote type="cite">
<div id="yiv7519495314gmail-m_7045233675553400879yMail_cursorElementTracker_1593342181136"><br clear="none">
</div>
<div id="yiv7519495314gmail-m_7045233675553400879yMail_cursorElementTracker_1593342147838"><br clear="none">
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<div id="yiv7519495314gmail-m_7045233675553400879yMail_cursorElementTracker_1593342148326">Again thank you
for your great work. I would love this message to be seen as a
query and suggestion at its best. </div>
<div id="yiv7519495314gmail-m_7045233675553400879yMail_cursorElementTracker_1593342243204"><br clear="none">
</div>
<div id="yiv7519495314gmail-m_7045233675553400879yMail_cursorElementTracker_1593342243808">Looking forward
to hearing your thoughts. </div>
<div id="yiv7519495314gmail-m_7045233675553400879yMail_cursorElementTracker_1593342257726"><br clear="none">
</div>
<div id="yiv7519495314gmail-m_7045233675553400879yMail_cursorElementTracker_1593342257827"><br clear="none">
</div>
<div id="yiv7519495314gmail-m_7045233675553400879yMail_cursorElementTracker_1593342257959">Best regards</div>
<div id="yiv7519495314gmail-m_7045233675553400879yMail_cursorElementTracker_1593342261795">- mehdi</div>
<div id="yiv7519495314gmail-m_7045233675553400879yMail_cursorElementTracker_1593342052722"><br clear="none">
</div>
</blockquote>
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</blockquote></div></div></div></div> </div> </blockquote></div>