0002595: Clip with any forced frame rate appears in slow motion

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Date Submitted

Last Update

0002595

Kdenlive

Rendering

public

2012-04-29 23:47

2012-12-15 00:01

Reporter

Digitante

Assigned To

Priority

normal

Severity

major

Reproducibility

always

Status

acknowledged

Resolution

open

Platform

64 bit

Debian Linux

OS Version

4.0

Product Version

0.8.2.1

Target Version

Fixed in Version

Summary

0002595: Clip with any forced frame rate appears in slow motion

Description

If I use the advanced tab in "clip properties" on a video clip in my project tree and make use of the "Force frame rate" option and then use the clip in my project, it plays in slow motion (as if the frame rate were set very low).

This happens even if I check the box, but leave the frame rate as it was originally set.

Steps To Reproduce

Load a clip from file (this one was a .MOV file taken from a "Contour HD1080P" digital camcorder).
Click on the clip in the Project Tree.
Select the advanced tab.
Click the "Force frame rate" option (it is not necessary to change the value)
Add the clip to the project.
Play using the project monitor.
Playback is slow motion.
I'm not certain, but I also think that playback starts at the beginning of the clip no matter where in the pasted clip you start the playback.

Additional Information

Currently, there seems to be no good option for correcting a video if it is accidentally recorded at a different frame rate than advertised in the codec (e.g. if the video is actually recorded at 29.97fps while claiming 30fps or vice-versa). This can create problems when trying to synchronize separate sound recordings.

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Notes
(0008774) ptitmain (developer) 2012-12-13 21:43	I can confirm this bug in kdenlive 0.9.2. Activating the "force frame rate" option in expert area of a clip gives me a fixed image of the clip. Even rendering the project gives me a fixed image (sound seems ok). I tested with .mov file with framerate 29.97.

Issue History
Date Modified	Username	Field	Change
2012-04-29 23:47	Digitante	New Issue
2012-12-13 21:43	ptitmain	Note Added: 0008774
2012-12-15 00:01	ptitmain	Assigned To	=> ptitmain
2012-12-15 00:01	ptitmain	Status	new => acknowledged
2012-12-15 00:01	ptitmain	Assigned To	ptitmain =>