Kdenlive/Manual/Effects/Motion/Speed: Difference between revisions

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==== Motion Effects - Speed ====
==== Motion Effects - Speed ====


Make clip play faster or slower.
Make clip play faster or slower. Use of this effect mutes the audio of the clip.


[[File:Kdenlive Motion speed effect.png]]
[[File:Kdenlive Motion speed effect.png]]


The Stroboscope setting defines the number frames the effect skips when playing back. For example, if Stroboscope is set to 5 then the effect will only show every 5th frame but will show these frame for 5 times as long producing a jumpy stroboscope effect.
The ''Stroboscope'' setting defines the number frames the effect skips when playing back. For example, if ''Stroboscope'' is set to 5 then the efect will only show every fifth frame but will show these frames for five times as long, producing a jumpy, stroboscopic effect.


It has been reported that the speed effect does not work very well on  H.264 formatted source video. It is recommended to transcode your source material into DNxHD format and apply the speed effect to that. ([https://forum.kde.org/viewtopic.php?f=270&t=121296&p=311629#p311427 forum post])
It has been reported that the '''Speed''' effect does not work very well on  H.264-formatted source video. It is recommended to transcode your source material into the DNxHD format and apply the '''Speed''' effect to that. ([https://forum.kde.org/viewtopic.php?f=270&t=121296&p=311629#p311427 forum post])


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Latest revision as of 01:10, 10 May 2015

Motion Effects - Speed

Make clip play faster or slower. Use of this effect mutes the audio of the clip.

The Stroboscope setting defines the number frames the effect skips when playing back. For example, if Stroboscope is set to 5 then the efect will only show every fifth frame but will show these frames for five times as long, producing a jumpy, stroboscopic effect.

It has been reported that the Speed effect does not work very well on H.264-formatted source video. It is recommended to transcode your source material into the DNxHD format and apply the Speed effect to that. (forum post)