Thank you very much Nikfreak. Respect. English is not my native langage, please forgive my faults.
I'm completely discovering M.L. thanks to you. I try to master video capabilities to use it for astronomy : the 100D is quite light to couple it with a telescope.
For sure, I don't yet master it and I'm not understanding all i'm doing with M.L. (prefer testing than reading thousand pages of M.L. forum). I try to get the max. resolution video with the higher fps possible (higher fps necessary because a lot of frames are bad due to these dreadfull atmospheric fluctuation + the video duration must be shorter as possible... and if you want enough pictures to stack...). I see now that I have to make compromises.
Currently, my tests make me say that :
* It's a very nice laboratory !!! Could spend many hours on it
* I wasn't able to write on the card higher than 39.2 MB/s (or Mo/s) or it skips frames. My card is faster indeed : probably the limit of the EOS is reached;
* the fps/resolution configuration of video with M.L. is only possible with a RAW module enabled : impossible to try a "not RAW"/normal firmware full HD video at 45 - 50 - 60 fps. It's how it is. By the way, RAW is good to catch some creazy details ;
* I'm quite stuck with the 14 bits of the RAW because large data makes me reduce the resolution to keep 50 or 60 fps with continous frame recording ;
* one of my best compromis is 60fps / 960 X 432 (or 720
=> in brief, aspect ratio 4:3) / MLV mod.;* how can I avoid these awfull green dots on my video/dng files ? I'm still looking at it
.In brief, you opened a new area for me. THANKS !!!