[FFmpeg-user] Can FFmpeg create a separate transparent PNG track?

[Carl Eugen Hoyos]

Werner Robitza <werner.robitza <at> gmail.com> writes:

> ffmpeg -loop_input -i input.mp4 -i logo.png -map 0 -map 1 output.mp4
> 
> But since the overlay is converted from PNG to an actual 
> video bitstream, it's not transparent anymore

(Complete, uncut console output missing.)

Both png and qtrle can be put into an isom container and read by 
third party applications.

Carl Eugen