I made a video using a couple of hundred images, with output set to 1fps so that each image had a duration of several seconds. The video works perfectly on my laptop, but the TV would not play the video due to "unsupported video format". The problem is the 1fps output. (I know this because I ran a test video with 25fps output, which displayed perfectly on TV but each image lasted only a fraction of a second.)
How can I keep 25fps (for TV compatibility) while "slowing down" the video so that each image remains displayed for a few seconds? Can Avidemux do this?