Hi,

this is my first post here and I'm also a newbie with respect to video editing. I find Kdenlive so convincing that I purchased a video editing machine and setup Linux+KDE+Kdenlive in order to edit my dirt-diving footage.

I've noticed problems with rendering to the H.264 output format on a installation from sunab's ppa repository. Note: I need to install from this bleeding edge repository, as the stock Kubuntu 11.10 beta2 64bit installation is broken beyond repair; it won't even really start due to problems with the MLT version and setup.

Okay, now for my bug: whenever I try to render with the stock MP4 and H.264 profiles some video, it takes exactly 2 or 4 seconds (regardless of overall length, what a renderer!) and I endup with an unusable .mp4 file which is just barely a hundred bytes in size.

Only after I switch on two-pass operation, the video will be rendered properly.

Any help on how to properly render to H.264 in single pass?
Many thanks!

I'm using same set up as yourself except Ubuntu, not that it has any bearing, kdenlive crashes after about 10% - 15% trying to render to h264 in 1 pass. But if I select the first frame and last as in and out and then render the selection it works fine, just doesn't like rendering the project as a whole, you could try that as a test.

Ah, thank you very much for this workaround! That way it works.

Getting stranger and stranger ... rendering the whole project also works most of the time now after I upgraded to the newer bleeding edge. Albeit audio is now a problem: either I get video and no audio or no video but audio in the MPEG-4 and H.264 profiles. Something's broken here it seems.

Sigh.