adding clip3 for Bob for 60 fps VFR

[realfinder]

Hi

after I read this https://forum.doom9.org/showthread.php?t=173147 I think TFM or TDecimate can be update to have new clip3 to feed with something like qtgmc and base on metrics.txt and matches.txt same as 30 fps but when there are no field to match with instead of using 30 fps with clip2 (half Bob)

[realfinder]

in case someone need samples I find some https://forum.doom9.org/showthread.php?p=1379837#post1379837 all them are 60i but http://www.mediafire.com/file/m0ma5zlvjz0/HT2-1-DHTsample2.m2v/file are mixed 24/60i

edit: I find this https://www.solidfiles.com/v/NVqK6xkYK7ANM it should be all in one case

[realfinder]

with https://github.com/CeppoTools/CTools it possible to do 60 fps VFR now, maybe it possible to take some ideas from it?