Bug 434545

Summary:	Zoom doesn't work when scaling rendered video
Product:	[Applications] kdenlive	Reporter:	Davide Coppola <vivaladav>
Component:	Rendering & Export	Assignee:	Jean-Baptiste Mardelle <jb>
Status:	RESOLVED FIXED
Severity:	normal	CC:	berndmj
Priority:	NOR
Version First Reported In:	20.12.3
Target Milestone:	---
Platform:	Kubuntu
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Davide Coppola 2021-03-17 13:51:20 UTC

SUMMARY
When I try to use "Position and zoom" or "Zoom pan" effects on a video and then I export it scaled, any zoom/pan is lost in the final rendering.

STEPS TO REPRODUCE
1. Create any 1920x1080 project
2. Add a video clip
3. Apply a "Position and zoom" effect to the clip
4. Render the video as mp4 and rescale to 600x337

OBSERVED RESULT
The rendered video is scaled down to 600x337, but it has no zoom applied to it.

EXPECTED RESULT
A rendered video that's scaled and that keeps all the effects applied to it.

SOFTWARE/OS VERSIONS

Linux/KDE Plasma: Kubuntu 20.04
KDE Plasma Version: 5.18.5
KDE Frameworks Version: 5.68.0
Qt Version: 5.12.8

ADDITIONAL INFORMATION

Comment 1 Bernd 2024-12-23 19:29:59 UTC

Hi and thank you for your patience.

Can you please check whether this issue still exists in the latest version 24.12.0? Please note that the Position and Zoom effect has known issues with artifacts during rendering. It is recommended to use the Transform effect instead.

If yes, please update this report to reflect the new version.

If it works now like you expect it would, you may change the status of this report to RESOLVED - FIXED.

At any rate, this report will be closed if there is no activity for the next 30 days.

Comment 2 Bug Janitor Service 2025-01-07 03:47:36 UTC

🐛🧹 ⚠️ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME.

For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging.

Thank you for helping us make KDE software even better for everyone!

Comment 3 Davide Coppola 2025-01-13 21:50:50 UTC

Tested with Kdenlive 22.04.3 and now the rendered video comes out like expected.