Hello,

I am using Kdenlive 0.9.2 on Ubuntu 10.04 LTS. Hardware is a Dell Inspiron 1420 laptop.

My project is using HD 1080p 25 fps clips in MPEG-2 M2T format (video only, no sound) which were generated in Kdenlive from historic WWI-era low-resolution clips and dubbing them with an audio file. The parameters as shown in the Render dialog when creating these clips were as follows:

f=mpegts acodec=mp2 ab=%audiobitrate+'k' ar=48000 vcodec=mpeg2video minrate=0 vb=%bitrate+'k' bf=2 b_strategy=1 trellis=1 aspect=%dar pass=%passes


Now I have reloaded these clips into a new project in order to create effects and to dub the audio. I am trying to use proxy clips due to the high resolution of the project clips, but it isn't working. After activating the "Proxy clips" option in the project settings, saving the project, then reopening, I right-click on a clip in the project tree. The context menu shows "Proxy clip" with a checkbox. The first time, right after I activated the proxy option in the project settings, there appeared a little progress bar saying something like "3 jobs" (I have three clips at the moment in the project tree). But afterwards, all is stil the same as before. In the context menu which appears when right-clicking a clip in the tree, I see "Proxy clip" and the checkbox which is always unchecked, even after I click on it. And in the Project settings, I see "0" next to "Proxy files" under the "Project files" tab.

How can I get these proxy clips to work?

Of course, I can work around this limitation by creating the proxy clips outside of Kdenlive with ffmpeg and adding them to the project as separate clips. Might even be simpler to do it this way...

Try creating a custom proxy profile under config menu option, then assign that custom proxy profile to your project instead, then tick proxy option to get them to build and see if that works for you.

Also not sure but if you're using a 1080P project ie: 1920x1080 1:1 PAR, aren't mpeg2 m2t's usually 1440x1080 4:3 PAR? So are your clips the correct res for your project?