[FFmpeg-devel] [PATCH v2 1/2] avfilter/interlace: change lowpass_line function

[Thomas Mundt]

Hi,

this patch set
1) changes the lowpass_line function prototype in vf_interlace and vf_tinterlace as suggested by James Almer.
2) adds a complex (-1 2 6 2 -1) vertical low-pass filter to vf_interlace and vf_tinterlace.
This one slightly less reduces interlace 'twitter' but better retains detail and subjective sharpness impression compared to the linear (1 2 1) filter.
The (-1 2 6 2 -1) filter gave best results tested with several CRT, TFT and OLED monitors, hardware and software deinterlacers.

Patch attached...
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