[FFmpeg-devel] [PATCH v3 1/2] avfilter/interlace: change lowpass_line function prototype

Thomas Mundt tmundt75 at gmail.com
Fri Apr 21 00:53:29 EEST 2017


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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