Andrew,

Trying to keep up with you but expect that I have already lost track and will miss some email. (My advice, be sure to get some exercise and do not spend all of your time on the computer; GG took a solo 1.5 hour bike ride yesterday).

Anyway, from March 15, I could not reproduce this "0 frames". Which format did you use for the render? My test below your output is from ffmpeg and then tiff and testing for exr and jpeg sequence also showed 1 frame. In my render menu, I specifically selected "One frame" and I tested using a x.mov and a x.png file. Any suggestions for me to reproduce ?

Also, a bit of nipicking (?) but Cinelerra doesn' show single-frame rendering correctly in stats:

** rendered 0 frames in 14.170 secs, 0.000 fps
Render::render_single: Session finished.
** rendered 355 frames in 249.619 secs, 1.422 fps
Render::render_single: Session finished.
** rendered 0 frames in 3.640 secs, 0.000 fps

Shouldn't it be 1 frame, at least?

Render::render_single: Session finished.
** rendered 1 frames in 0.121 secs, 8.264 fps
[Detaching after vfork from child process 163845]
Render::render_single: Session finished.
** rendered 1 frames in 0.079 secs, 12.658 fps
[Detaching after vfork from child process 164058]