Bug 453420 - 4K Video Proxy is smooth on Clip Monitor but super Choppy on Project Monitor
Summary: 4K Video Proxy is smooth on Clip Monitor but super Choppy on Project Monitor
Status: CONFIRMED
Alias: None
Product: kdenlive
Classification: Applications
Component: Video Display & Export (show other bugs)
Version: unspecified
Platform: unspecified All
: NOR normal
Target Milestone: ---
Assignee: Jean-Baptiste Mardelle
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-05-05 12:50 UTC by Vaibhav Dhotre
Modified: 2022-05-10 09:36 UTC (History)
2 users (show)

See Also:
Latest Commit:
Version Fixed In:
fritzibaby: timeline_corruption+


Attachments
attachment-30134-0.html (2.21 KB, text/html)
2022-05-09 17:46 UTC, Vaibhav Dhotre
Details
attachment-12060-0.html (1.10 KB, text/html)
2022-05-10 09:36 UTC, Vaibhav Dhotre
Details

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Description Vaibhav Dhotre 2022-05-05 12:50:07 UTC
I always proxy my video footage before start editing.

When I play the video in Clip Monitor, I find no issues.

But as soon as I add it into the project sequence and play/preview, it will start chopping (15 frames) in the Project Monitor.

Please resolve this in the next update.


Footage : 4K
Using Proxy : Yes
Project Resolution : 4K UHD 2160p
Comment 1 emohr 2022-05-07 08:15:44 UTC
Please make following test: switch "Track Composition" from "High Quality" to "none" (https://docs.kdenlive.org/de/cutting_and_assembling/editing.html?highlight=high%20quality#timeline-toolbar). 

Does the playback fps rise?
Comment 2 Vaibhav Dhotre 2022-05-08 20:05:27 UTC
(In reply to emohr from comment #1)
> Please make following test: switch "Track Composition" from "High Quality"
> to "none"
> (https://docs.kdenlive.org/de/cutting_and_assembling/editing.
> html?highlight=high%20quality#timeline-toolbar). 
> 
> Does the playback fps rise?

Superb. It works really well.

PLEASE MAKE THIS SETTING AS DEFAULT for preview in the next update.
Comment 3 Vaibhav Dhotre 2022-05-08 20:12:49 UTC
(In reply to emohr from comment #1)
> Please make following test: switch "Track Composition" from "High Quality"
> to "none"
> (https://docs.kdenlive.org/de/cutting_and_assembling/editing.
> html?highlight=high%20quality#timeline-toolbar). 
> 
> Does the playback fps rise?

But do I need to switch from None to High Quality every time before render?
I mean, will this action affect my final output if I forget to switch it back to High Quality?
Comment 4 emohr 2022-05-09 14:55:27 UTC
If you have no clip or title with alpha channel on another track in your timeline, yes you can render with "none". If you have clips, title or composition containing alpha channel on another track you have to switch to "High Quality" otherwise you get just a black background where alpha makes it transparent. 

In general, playback with "High Quality" is a performance issue on both side Kdenlive and your PC.
Comment 5 Vaibhav Dhotre 2022-05-09 17:46:21 UTC
Created attachment 148685 [details]
attachment-30134-0.html

Okay. I need to playback with "none" option. And before rendering, I need
to switch back to "High Quality".

Am I right?



Can I set this in settings as follows?
None - For playback and
High quality - For Render.

It will be effortless and easy to use kdenlive.

On Mon, 9 May, 2022, 20:25 emohr, <bugzilla_noreply@kde.org> wrote:

> https://bugs.kde.org/show_bug.cgi?id=453420
>
> emohr <fritzibaby@gmx.net> changed:
>
>            What    |Removed                     |Added
>
> ----------------------------------------------------------------------------
>            Severity|critical                    |normal
>              Status|REPORTED                    |CONFIRMED
>      Ever confirmed|0                           |1
>
> --- Comment #4 from emohr <fritzibaby@gmx.net> ---
> If you have no clip or title with alpha channel on another track in your
> timeline, yes you can render with "none". If you have clips, title or
> composition containing alpha channel on another track you have to switch to
> "High Quality" otherwise you get just a black background where alpha makes
> it
> transparent.
>
> In general, playback with "High Quality" is a performance issue on both
> side
> Kdenlive and your PC.
>
> --
> You are receiving this mail because:
> You are on the CC list for the bug.
> You reported the bug.
Comment 6 emohr 2022-05-09 18:24:58 UTC
First: Yes. 
Second: No, this is not available.
Comment 7 Vaibhav Dhotre 2022-05-10 09:36:34 UTC
Created attachment 148701 [details]
attachment-12060-0.html

Thanks for your satisfactory reply.

I wish I could set up in settings as below.
1. Playback - None
2. Render - High Quality

Please add this important feature in the next roll out update.

On Mon, 9 May, 2022, 23:55 emohr, <bugzilla_noreply@kde.org> wrote:

> https://bugs.kde.org/show_bug.cgi?id=453420
>
> --- Comment #6 from emohr <fritzibaby@gmx.net> ---
> First: Yes.
> Second: No, this is not available.
>
> --
> You are receiving this mail because:
> You are on the CC list for the bug.
> You reported the bug.