Scene filter does not export all frames on the slow PCs

[Eugeny]

Hello, I need every frame to be exported into the image files. On slow PC, it keeps video running in realtime even with option --vout=dummy (when it is not required), and does not write all the frames. It writes less frames, depending on the --scene-ratio set. If I set this option to 1, it writes 4000 frames, if I set it to 2, it writes 6000 frames, if I set it to 3 it writes all 8000 frames (I count frames not by number of files, but by frame # in file name).

On another, faster PC, I can achieve needed 8000 frames with ratio 1.

Is there any option to tell to VLC not to keep realtime video processing, but rather give priority to processing images into the disk so that I have all the frames with ratio option equal to 1?
Thank you.

[mederi]

Perhaps
--no-drop-late-frames
--no-skip-frames

[Rémi Denis-Courmont]

By design, a video filter cannot control the pipeline speed.

You would need to write a stream output plugin.