[kdenlive, mlt, and ffmpeg libraries self-compiled from today's repositories]

I have some problems understanding the exact logic how the pixel aspect ratio (PAR) exactly works in kdenlive if I overlay a PNG image over a DV video.

My DV video has 720x576 pixels; kdenlive applies a PAR of 1.066667 to compensate the non-rectangular pixels of a normal television screen, which gives 768x576 pixels on my laptop screen. To avoid distortions, I want to compute title images at 720x576 also – the font rasterizer produces better results if you render for different X and Y resolutions instead of squeezing the horizontal axis later on.

However, kdenlive apparently doesn't like this approach; it seems that I can't specify a PAR for PNG images.

Is this a missing feature or am I doing something wrong?

I now believe this is a bug; I've added it as issue #1972.

http://www.kdenlive.org/mantis/view.php?id=1972


Werner

Can you not create your images at 720x576 in your image application but specify differing x & y dpi's to compensate? The multiplication of 1.66667 is correct for PAL 4:3.

Being to set a pixel aspect ratio for images was only recently added in MLT - dunno yet about Kdenlive. Otherwise, it assumes still images are square pixels.