mencoder -vf help
Available video filters:
| rectangle | draw rectangle
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| bmovl | Read bitmaps from a FIFO and display them in window
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| crop | cropping
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| expand | expanding & osd
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| pp | postprocessing
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| scale | software scaling
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| vo | libvo wrapper
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| format | force output format
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| noformat | disallow one output format
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| yuy2 | fast YV12/Y422p -> YUY2 conversion
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| flip | flip image upside-down
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| rgb2bgr | fast 24/32bpp RGB<->BGR conversion
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| rotate | rotate
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| mirror | horizontal mirror
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| palette | 8bpp indexed (using palette) -> BGR 15/16/24/32 conversion
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| lavc | realtime mpeg1 encoding with libavcodec
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| lavcdeint | libavcodec's deinterlacing filter
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| pp7 | postprocess 7
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| dvbscale | calc Y scaling for DVB card
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| cropdetect | autodetect crop size
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| test | test pattern generator
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| noise | noise generator
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| yvu9 | fast YVU9->YV12 conversion
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| eq | soft video equalizer
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| eq2 | Software equalizer
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| halfpack | yuv planar 4:2:0 -> packed 4:2:2, half height
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| dint | drop interlaced frames
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| 1bpp | 1bpp bitmap -> YUV/BGR 8/15/16/32 conversion
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| 2xsai | 2xSai BGR bitmap 2x scaler
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| unsharp | unsharp mask & gaussian blur
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| swapuv | UV swapper
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| il | (de)interleave
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| fil | fast (de)interleaver
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| boxblur | box blur
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| sab | shape adaptive blur
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| smartblur | smart blur
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| perspective | perspective correcture
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| down3dright | convert stereo movie from top-bottom to left-right field
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| field | extract single field
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| denoise3d | 3D Denoiser (variable lowpass filter)
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| hqdn3d | High Quality 3D Denoiser
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| detc | de-telecine filter
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| telecine | telecine filter
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| tinterlace | temporal field interlacing
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| tfields | temporal field separation
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| ivtc | inverse telecine, take 2
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| ilpack | 4:2:0 planar -> 4:2:2 packed reinterlacer
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| dsize | reset displaysize/aspect
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| decimate | near-duplicate frame remover
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| softpulldown | mpeg2 soft 3:2 pulldown
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| pullup | pullup (from field sequence to frames)
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| filmdint | Advanced inverse telecine filer
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| framestep | Dump one every n / key frames
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| tile | Make a single image tiling x/y images
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| delogo | simple logo remover
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| remove-logo | Removes a tv logo based on a mask image.
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| hue | hue changer
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| spp | simple postprocess
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| uspp | ultra simple/slow postprocess
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| fspp | fast simple postprocess
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| qp | QP changer
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| mcdeint | motion compensating deinterlacer
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| geq | generic equation filter
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| yuvcsp | yuv colorspace converter
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| kerndeint | Kernel Deinterlacer
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| rgbtest | rgbtest
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| phase | phase shift fields
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| divtc | inverse telecine for deinterlaced video
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| harddup | resubmit duplicate frames for encoding
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| softskip | soft (post-filter) frame skipping for encoding
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| screenshot | screenshot to file
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| ass | Render ASS/SSA subtitles
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| yadif | Yet Another DeInterlacing Filter
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| blackframe | detects black frames
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