0000461: Creating a "split screen" video

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Date Submitted

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0000461

Kdenlive

Effects

public

2008-12-13 14:36

2011-11-24 14:33

Reporter

jappel

Assigned To

Priority

normal

Severity

feature

Reproducibility

N/A

Status

acknowledged

Resolution

open

Platform

OS Version

Product Version

Recent git

Target Version

Fixed in Version

Summary

0000461: Creating a "split screen" video

Description

Joining two videos into one screen is difficult to achieve at the moment, and its less than intuitive. An effect that displays two / several scaled videos in one screen would be greatly appreciated.

so far I
1. put three clips on top of each other, the upper and the middle clip will be the clips being displayed, the 3rd clip will form the background.
2. add composite transition to the 2nd clip, so between the 2nd and the 3rd clip, select the transition and choose with the lower left icon "resize=50%". repeat this with the 1st clip, so that there is a transition between the 1st and the 2nd clip. Do the resizing.
3. Change both transitions to AffineComposite. Maybe redo scaling and positioning, switch back to normal Composite.

Sometimes this results in the effect I try to accomplish, sometimes it doesn't. At first it looked like this feature is enabled through a bug when switching from normal composite to Affine and then back to normal results in the "split screen" effect, but atm I am clueless what kind of magic is at work. I tried several times to evaluate a reproduceable way, but I couldnt recognize one.

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No tags attached.

Build/Install Method

Build Wizard

Attached Files

split_screen.kdenlive [^] (7,883 bytes) 2009-01-02 18:34

figur_f_1.kdenlive [^] (35,293 bytes) 2009-01-02 18:34

onlyupperleft.jpeg [^] (40,119 bytes) 2009-01-02 18:48

working_split_screen.kdenlive [^] (6,315 bytes) 2009-02-11 22:31

Relationships

related to	0000458	closed		trying to use the composite effect for displaying to (video-)sources besides each other
related to	0000460	closed		composite transitions crash kdenlive

Notes
(0001659) cinephiliac (updater) 2008-12-15 08:43	Acknowledged as a wishlist to have a simple method of displaying multiple video clips side by side.

(0002004) madsdyd (administrator) 2009-01-02 18:09	jappel: Could you attach the kdenlive "template" file you are writing about in http://www.kdenlive.org/forum/split-screen-effect-kdenlive [^] Thanks.

(0002007) jappel (reporter) 2009-01-02 18:45	madsdyd: avec plaisir. I attached two files: figur_f_1.kdenlive is an unmodified version of what produced with ffmeg: 16078 mlt: 1263 mlt: ++ 1263 kdenlive: 2777 qt: 4.4.3 kde: 4.1.3 something like this: http://www.youtube.com/watch?v=BuSiA1QWrrU [^] the split screen transition is towards the end of the clip. However, with ffmpeg: Revision: 16397 mlt: Revision: 1301 mlt++: Revision: 1301 kdenlive: Revision: 2859 Qt: 4.4.3 KDE: 4.1.85 (KDE 4.1.85 (KDE 4.2 Beta2)) Kdenlive: 0.7.1 the split screen-effect has moved to the upper left, and is no longer fullscreen. I do not know wheather this is related to the fact that I use different program versions than or that i moved around the video-files so that kdenlive no longer finds them and marks them as "invalid clip" in the timeline. The automatic search found them, but the effect is still only visible in the upper left. I ll attach a screenshot soon. split_screen.kdenlive is a cleaned file, where only three color clips and the transitions exist. The kdenlive-file suffers from the "upper left" problem as well with the 0.7.1 version. I'd like to add that I went through a lot of crashes while moving / removing all clips except the transitions from the timeline of figur_f_1.kdenlive, maybe it is interesting for you to look into them as well. Thank you for taking care, Juergen.

(0002413) jappel (reporter) 2009-02-11 22:35	I just added a file that includes a working split screen effect (working_split_screen.kdenlive it is). It works fine with the following revisions: ffmpeg: Revision: 16910 Last Changed Date: 2009-02-01 01:20:45 +0100 (Sun, 01 Feb 2009) mlt: Revision: 1335 Last Changed Date: 2009-02-01 01:45:44 +0100 (Sun, 01 Feb 2009) mlt++: Revision: 1335 Last Changed Date: 2009-01-26 19:32:03 +0100 (Mon, 26 Jan 2009) kdenlive: Revision: 3020 Last Changed Date: 2009-02-01 00:04:00 +0100 (Sun, 01 Feb 2009) Qt: 4.4.3 KDE: 4.2.00 (KDE 4.2.0) Kdenlive: 0.7.1 have fun, J.

Issue History
Date Modified	Username	Field	Change
2008-12-13 14:36	jappel	New Issue
2008-12-13 14:36	jappel	Build/Install Method	=> Build Wizard
2008-12-15 08:42	cinephiliac	Relationship added	related to 0000458
2008-12-15 08:42	cinephiliac	Relationship added	related to 0000460
2008-12-15 08:43	cinephiliac	Note Added: 0001659
2008-12-15 08:43	cinephiliac	Status	new => acknowledged
2009-01-02 18:09	madsdyd	Note Added: 0002004
2009-01-02 18:34	jappel	File Added: split_screen.kdenlive
2009-01-02 18:34	jappel	File Added: figur_f_1.kdenlive
2009-01-02 18:45	jappel	Note Added: 0002007
2009-01-02 18:48	jappel	File Added: onlyupperleft.jpeg
2009-02-11 22:31	jappel	File Added: working_split_screen.kdenlive
2009-02-11 22:35	jappel	Note Added: 0002413