Deinterlace a video to remove combing artifacts

Interlaced footage shows characteristic horizontal combing — fine horizontal lines that appear on moving objects, particularly visible when the video is paused. The combing comes from two video fields (odd and even scan lines) captured at different times being combined into a single frame. Another indicator is if the video description mentions '1080i', '720i', or '576i' — the 'i' suffix means interlaced. 1080p, 720p, and 576p are progressive.

Bob deinterlacing reconstructs each field as a separate full frame by interpolating the missing scan lines, effectively doubling the frame rate (e.g. 25i → 50p). This produces smooth motion but with some softness from field interpolation. Weave deinterlacing combines the two fields back into a single frame (maintaining the original frame rate) using motion-adaptive blending. Weave is recommended for static content; bob is better for high-motion sequences.

Deinterlacing interpolates missing scan lines from adjacent fields, which introduces some softness compared to native progressive capture. This is unavoidable with field-based material — the original data was captured as alternating fields, not full frames. A sharpening pass (sharpen filter in JAD's post-processing options) can partially compensate. The alternative is to use QTGMC, a higher-quality deinterlacer not currently available in the browser WASM build.