I am trying to edit footage captured with Canon HF10. The original AVCHD files were transcoded with mencoder. I did NOT try to edit AVCHD files in Kdenlive - I transcoded them first with mencoder.

Kdenlive can import the clip and Kdenlive can play it. When I pause the clip and press rewind, the picture remains frozen (displays the last frame after pressing pause). Whem I move the triangle time pointer, the picture remains frozen. When I click the Play button again, the picture remains frozen but I can hear the correct sound.

If I transcode the high definition file into standard definition or smaller, this problem disappears.

Exactly same behaviour for Kdenlive 0.6.0-svn (Kubuntu 8.04) and Kdenlive 0.7.5 (Kubuntu 9.10).

Kdenlive 0.6.0-svn runs on Dual-Core E7200 at 2.53GHz. Kdenlive 0.7.5 runs on Pentium-M.

I can post info displayed by mplayer and I can publish the video clip. Just ask.

"Me too"

I've tried both my AVCHD originals, and high-bitrate mpeg2 files that I manually converted with ffmpeg, and in both cases, playback inside kdenlive stutters badly, and then stops completely within about 5 seconds. After that, none of the playback buttons work, and scrolling the mousewheel in the time thing doesn't seek either. I've tried with the default kdenlive, ffmpeg, melt, etc that comes with Ubuntu 9.10, and also tried building ffmpeg, melt & x264 from svn source. No luck.

I'm just a regular user, but for me reading both posts, its very difficult to tell exactly what bit rate and resolution you are using.

How about typing:

ffmpeg -i yourvideo.mts
or
ffmpeg -i yourvideo.mpg
or what ever file name your video might be.

and post here the output.

Or if you have the program "tovid" installed, type:

idvid yourvideo.mts

and post here the output.

Without knowing the exact resolution and bit rate, my guess is it would be very difficult for any developer to comment.

Why don't you use the Kdenlive Transcode function or at least use the same format (DNxHD)?