Tips for Rendering NTSC 640×480 Video from Kdenlive with No Borders and at 29.97 fps
For some reason Kdenlive has a major rendering bug when it comes to handling NTSC video (as confirmed buy other frustrated users in the Kdenlive forums here and here), which is really a shame because at the moment Kdenlive is probably the closet thing to Apple’s iMovie that’s a free open-source non-linear video editor under Linux. But as the saying goes, “Where there’s a will there’s a way.” And thankfully, yes, I have found a way around this issue.
Be warned it’s not pretty, but it only requires two steps.
Step 1
Launch Kdenlive via Terminal using MLT_NORMALISATION=NTSC kdenlive at the command line. This will get Kdenlive and MLT one the same page for timeline playback and rendering NTSC video at 29.97 fps, instead of the default 25 fps PAL.
Step 2
Create a CUSTOM rendering option setting and include the parameter: aspect_ratio=1 aspect=4:3
Here’s a custom video setting I’m currently using to create MP4 Xvid video:
format=mp4 video_rc_min_rate=0 video_bit_rate=1800000 audio_bit_rate=64000 frequency=22050 size=640×480 vcodec=xvid aspect_ratio=1 aspect=4:3 frame_rate=30 mbd=2 trell=1 v4mv=1 progressive=1
* For those who curious, I use “Square NTSC” for my project settings to handle NTSC 640×480 video clips from my digital camera.
That’s it! Hopes this helps until the bug gets squashed by the development team (who are no doubt PAL users ;))
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Want to learn more about Kdenlive and how to use it? Check out the Quickstart Guide and view the following instructional videos (Format - OGG Theora/Vorbis) :
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About
Alexander Grundner is a San Francisco Peninsula based web publisher who spends most of his time tracking down news stories for eHomeUprade, attending technology events, or working on his next big project.
For fun he likes to stay active outdoors, take photographs, shoot video, hack together PHP/Python code, play with Linux, and test new technologies.
It was great: solved my problem!