Problem
Interlaced camera output is fed into a progressive broadcast pipeline and creates motion artifacts.
Solution
Root Cause / Diagnostic:
Legacy camcorders and broadcast cameras often default to interlaced output formats (such as 1080i50 or 1080i59.94) where frames consist of alternating even and odd scan lines. Feeding an interlaced signal into a progressive (1080p) web streaming pipeline without hardware or software deinterlacing results in severe comb-like motion artifacts during fast movements. This jagged horizontal tearing noticeably degrades visual fidelity on modern digital displays.
Actionable Fix:
1. Enter the camera's video output menu and change the clean HDMI format from 1080i to 1080p (progressive).
2. If the camera only supports interlaced output, right-click the video source in OBS, select 'Deinterlacing', enable it, and select the 'Yadif 2x' deinterlacing algorithm.
3. Visually inspect fast hand or head movements on the OBS preview to verify that horizontal jagged line artifacts are completely eradicated.
Pro Tip:
Modern streaming platforms like YouTube encode strictly for progressive screens; delivering native progressive signals eliminates the latency and sharpness loss caused by software deinterlacing filters.
Legacy camcorders and broadcast cameras often default to interlaced output formats (such as 1080i50 or 1080i59.94) where frames consist of alternating even and odd scan lines. Feeding an interlaced signal into a progressive (1080p) web streaming pipeline without hardware or software deinterlacing results in severe comb-like motion artifacts during fast movements. This jagged horizontal tearing noticeably degrades visual fidelity on modern digital displays.
Actionable Fix:
1. Enter the camera's video output menu and change the clean HDMI format from 1080i to 1080p (progressive).
2. If the camera only supports interlaced output, right-click the video source in OBS, select 'Deinterlacing', enable it, and select the 'Yadif 2x' deinterlacing algorithm.
3. Visually inspect fast hand or head movements on the OBS preview to verify that horizontal jagged line artifacts are completely eradicated.
Pro Tip:
Modern streaming platforms like YouTube encode strictly for progressive screens; delivering native progressive signals eliminates the latency and sharpness loss caused by software deinterlacing filters.