When I generate a video starting from a sequence of .png snapshots, the output video is black. Here is a minimal working example: I generate the video from these two frames with the following command on Ubuntu 16.04.4 LTS
$ ffmpeg -r 1 -i frame%d.png -pix_fmt yuv420p video.mp4
and obtain a black video.mp4.
Do you know a way around this? I know that a similar question has been asked, for example, here, but the solution does not solve the problem in my case.
Best Answer
Some players don't like low framerate videos. The workaround is to set a high output rate.
5
should be enough, but try 10 if not.