The attribute "start_time" in my 48 FPS quicktime is -0.2254, or 14 frames.
RV skips the first 14 frames silently.
I noticed this because I was ripping the frames using ffmpeg with the "-ss" option and I'm getting all 132 frames (14 more at the head.)
Is this one of those "go ahead and write your own handler to do whatever you want, since this isn't something that we or the majority of your customers care about?"
Noticed that FinalCut movies occasionally have this attribute non-zero.
Might be a good idea to at least mention this time value on the F4 info panel?