[FFmpeg-user] a q about units

[Jim Shupert]

> It's byte offset from start of data stream.
>
> Gyan

Good info fellas

also I find related info from Gyan at
https://superuser.com/questions/1512575/why-total-frame-count-is-different-in-ffmpeg-than-ffprobe/1512583#1512583

Thanks again Gyan

and
https://stackoverflow.com/questions/3032929/problem-ffmpeg-seeking-with-av-seek-frame-using-byte-positions/11496937

https://stackoverflow.com/questions/13855533/how-to-decode-video-data-from-specific-position-in-byte

in short , as I *understand* it:  one tends to seek to the nearest full 
frame at a given byte position

cheers

jShupert