[kdenlive] [Bug 356564] New: Proxy clips use an incorrect aspect ratio

[Kubuntiac via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=356564

Bug ID: 356564
Summary: Proxy clips use an incorrect aspect ratio
Product: kdenlive
Version: unspecified
Platform: Kubuntu Packages
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: Video Display & Export
Assignee: ***@kdenlive.org
Reporter: ***@xymail.info

Some clips (not all, thus why I put sometimes reproducible, although the right
clips will always do this) look fine when not proxied, but when they are
proxied, their aspect ratio changes.

Reproducible: Sometimes

Steps to Reproduce:
1. Add a clip to the timeline. Note that it looks correct in the clip /
timeline monitor.
2. Proxy the clip
3. Look at the aspect ratio of the clip in the timeline

Actual Results:
Clip appears distorted (often stretched horizontally)

Expected Results:
Clip appears as normal

[Kubuntiac via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=356564

--- Comment #1 from Kubuntiac <***@xymail.info> ---
Created attachment 96015
--> https://bugs.kde.org/attachment.cgi?id=96015&action=edit
Screen recording video from Telecine

Example clip that distorts when proxied. Recorded with the FOSS Android screen
recording app Telecine.

[Kubuntiac via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=356564

--- Comment #2 from Kubuntiac <***@xymail.info> ---
This is on Kubuntu 15.10 using vpinions PPA packages.

[Kubuntiac via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=356564

Kubuntiac <***@xymail.info> changed:

What |Removed |Added
----------------------------------------------------------------------------
Summary|Proxy clips use an |Proxy clips sometimes use
|incorrect aspect ratio |an incorrect aspect ratio

[Kubuntiac via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=356564

Kubuntiac <***@xymail.info> changed:

What |Removed |Added
----------------------------------------------------------------------------
Summary|Proxy clips sometimes use |Proxy clips sometimes use
|an incorrect aspect ratio |an incorrect aspect ratio
| |(includes example clip)

[Kubuntiac via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=356564

Kubuntiac <***@xymail.info> changed:

What |Removed |Added
----------------------------------------------------------------------------
Summary|Proxy clips sometimes use |Proxy clips sometimes use
|an incorrect aspect ratio |an incorrect aspect ratio
|(includes example clip) |(inc. example test clip)

[Jean-Baptiste Mardelle via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=356564

Jean-Baptiste Mardelle <***@kdenlive.org> changed:

What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Status|UNCONFIRMED |CONFIRMED

--- Comment #3 from Jean-Baptiste Mardelle <***@kdenlive.org> ---
Yes, I also noticed the problem. In fact, it is caused by the proxy profile.
Usually (at least with the default Kdenlive profile), we have a parameter like:

- s 640x480

This forces a frame size on the rendered proxy file without bothering about the
original clip's aspect ratio. I could fix the problem by changing the encoding
proxy profile like this:

-filter:v scale=640:-1

This should replace the '-s 640x480' part of the proxy profile. This means that
FFmpeg will resize original clip width to 640 and automatically set the height
to adjust to original aspect ratio.

Could you please try and confirm if that fixes the problem ?

[Kubuntiac via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=356564

--- Comment #4 from Kubuntiac <***@xymail.info> ---
I created a new profile ( -filter:v scale=640:-1 -g 5 -qscale 6 -ab 128k
-vcodec mpeg2video -acodec mp2 ), restarted Kdenlive and brought in a new clip,
but it's still doing the same thing.

[Jean-Baptiste Mardelle via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=356564

--- Comment #5 from Jean-Baptiste Mardelle <***@kdenlive.org> ---
Are you sure that your newly created profile was active on the new project ?
You can check it from the menu:
Project > Project Settings, the active proxy profile is the one selected in the
"Encoding profile" combobox.

[Kubuntiac via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=356564

--- Comment #6 from Kubuntiac <***@xymail.info> ---
Created attachment 96046
--> https://bugs.kde.org/attachment.cgi?id=96046&action=edit
SCreenshot showing proxy profile settings

Yep. Pretty sure. You can see in this screenshot the new profile I set up, and
that it's being used in the project and that the selected, proxied clip is
still showing up distorted.

[Jean-Baptiste Mardelle via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=356564

--- Comment #7 from Jean-Baptiste Mardelle <***@kdenlive.org> ---
Git commit 95d66037c1a68433438b4c30da5c86d81f066055 by Jean-Baptiste Mardelle.
Committed on 13/12/2015 at 21:50.
Pushed by mardelle into branch 'master'.

Fix reloading bin clip duplicating MLT normalizers, resulting in broken aspect
ratio

M +10 -13 src/mltcontroller/bincontroller.cpp

http://commits.kde.org/kdenlive/95d66037c1a68433438b4c30da5c86d81f066055

[Jean-Baptiste Mardelle via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=356564

--- Comment #8 from Jean-Baptiste Mardelle <***@kdenlive.org> ---
Git commit 0c22012eb2d8e4460a004e5831b5570a900326c4 by Jean-Baptiste Mardelle.
Committed on 14/12/2015 at 19:30.
Pushed by mardelle into branch 'Applications/15.12'.

Fix reloading bin clip duplicating MLT normalizers, resulting in broken aspect
ratio

M +10 -13 src/mltcontroller/bincontroller.cpp

http://commits.kde.org/kdenlive/0c22012eb2d8e4460a004e5831b5570a900326c4

[Kubuntiac via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=356564

--- Comment #9 from Kubuntiac <***@xymail.info> ---
Thanks JB,

I'll test this on the next PPA update.

[Michael G. Hansen via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=356564

Michael G. Hansen <***@mghansen.de> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@yandex.com

--- Comment #10 from Michael G. Hansen <***@mghansen.de> ---
*** Bug 360180 has been marked as a duplicate of this bug. ***

[Michael G. Hansen via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=356564

Michael G. Hansen <***@mghansen.de> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@mghansen.de

--- Comment #11 from Michael G. Hansen <***@mghansen.de> ---
Hello,

I can confirm that changing the scaling argument for ffmpeg in proxy settings
to "-vf scale=1280:-1" and applying the new settings in the "Project settings"
dialog converts the proxy clips with automatic aspect ratio detection.

KDENLIVE version: Version 15.12.3

Best regards,

Michael

[Wegwerf via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=356564

Wegwerf <wegwerf-1-2-***@gmx.de> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |wegwerf-1-2-***@gmx.de
Status|CONFIRMED |RESOLVED
Resolution|--- |FIXED