Am Sa., 27. Feb. 2021 um 06:34 Uhr schrieb Mark Filipak (ffmpeg) <markfilipak at bog.us>: > Question: Why would testsrc.mpg have been created with non-zero timestamp for frame 0? Nothing in the MPEG specification requires the first frame to have a timestamp of 0, so whatever the design decision was, it is not wrong. Carl Eugen