The same resolution as the M4V video — a 1080p M4V produces 1920×1080 JPG frames; a 4K M4V produces 3840×2160 JPG frames. Use the resize utility after extraction if you want smaller thumbnails or social-media-sized crops.
קען איך אױסשטעלן װײַל װיפֿל ראָמען פֿון M4V װי JPG?
Almost always motion blur baked into the M4V source — the camera or subject was moving when the frame was captured. Pick timestamps from static scenes, or extract adjacent frames and choose the sharpest. The pipeline does not synthesize detail that was not there.
