manpage: merge new manpage

About a year ago, ubitux converted most of the old manpage from the
hard to maintain nroff format to reStructuredText. This was not merged
back into the master repository immediately. The argument was that the
new manpage still required work to be done. However, progress was very
slow. Even worse: the old manpage wasn't updated, because it was
scheduled for deletion, and updating it would have meant useless work.

Now the situation is that the new manpage still isn't finished, and the
old manpage is grossly out of sync with the player. This is not helpful
for users. Additionally, keeping the new manpage in a separate branch,
while the normal development repository for code had the old manpage,
was very inconvenient, because you couldn't just update the
documentation in the same commit as the code.

Even though the new manpage isn't finished yet, merging it now seems to
be the best course of action. Squash-merge the manpage development
branch [1], revision e89f5dd3f2, which branches from the mplayer2
master branch after revision 159102e0cb.

Committers:

* Clément Bœsch <ubitux@gmail.com> (Initial conversion to RST.)
* Uoti Urpala <uau@mplayer2.org> (Many updates.)
* Myself (Minor edits.)

Most text of the manpage has been directly taken from the old manpage,
because this is a conversion, not a complete rewrite.

[1] http://git.mplayer2.org/uau/mplayer2.git/log/?h=man

1 files changed, 1452 insertions, 0 deletions

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+.. _video_filters:
+
+VIDEO FILTERS
+=============
+
+Video filters allow you to modify the video stream and its properties. The
+syntax is:
+
+--vf=<filter1[=parameter1:parameter2:...],filter2,...>
+    Setup a chain of video filters.
+
+Many parameters are optional and set to default values if omitted. To
+explicitly use a default value set a parameter to '-1'. Parameters w:h means
+width x height in pixels, x:y means x;y position counted from the upper left
+corner of the bigger image.
+
+*NOTE*: To get a full list of available video filters, see ``--vf=help``.
+
+Video filters are managed in lists. There are a few commands to manage the
+filter list.
+
+--vf-add=<filter1[,filter2,...]>
+    Appends the filters given as arguments to the filter list.
+
+--vf-pre=<filter1[,filter2,...]>
+    Prepends the filters given as arguments to the filter list.
+
+--vf-del=<index1[,index2,...]>
+    Deletes the filters at the given indexes. Index numbers start at 0,
+    negative numbers address the end of the list (-1 is the last).
+
+--vf-clr
+    Completely empties the filter list.
+
+With filters that support it, you can access parameters by their name.
+
+--vf=<filter>=help
+    Prints the parameter names and parameter value ranges for a particular
+    filter.
+
+--vf=<filter=named_parameter1=value1[:named_parameter2=value2:...]>
+    Sets a named parameter to the given value. Use on and off or yes and no to
+    set flag parameters.
+
+Available filters are:
+
+crop[=w:h:x:y]
+    Crops the given part of the image and discards the rest. Useful to remove
+    black bands from widescreen movies.
+
+    <w>,<h>
+        Cropped width and height, defaults to original width and height.
+    <x>,<y>
+        Position of the cropped picture, defaults to center.
+
+cropdetect[=limit:round[:reset]]
+    Calculates necessary cropping parameters and prints the recommended
+    parameters to stdout.
+
+    <limit>
+        Threshold, which can be optionally specified from nothing (0) to
+        everything (255) (default: 24).
+    <round>
+        Value which the width/height should be divisible by (default: 16). The
+        offset is automatically adjusted to center the video. Use 2 to get
+        only even dimensions (needed for 4:2:2 video). 16 is best when
+        encoding to most video codecs.
+    <reset>
+        Counter that determines after how many frames cropdetect will reset
+        the previously detected largest video area and start over to detect
+        the current optimal crop area (default: 0). This can be useful when
+        channel logos distort the video area. 0 indicates never reset and
+        return the largest area encountered during playback.
+
+rectangle[=w:h:x:y]
+    Draws a rectangle of the requested width and height at the specified
+    coordinates over the image and prints current rectangle parameters to the
+    console. This can be used to find optimal cropping parameters. If you bind
+    the ``input.conf`` directive 'change_rectangle' to keystrokes, you can
+    move and resize the rectangle on the fly.
+
+    <w>,<h>
+        width and height (default: -1, maximum possible width where boundaries
+        are still visible.)
+    <x>,<y>
+        top left corner position (default: -1, uppermost leftmost)
+
+expand[=w:h:x:y:osd:aspect:round]
+    Expands (not scales) movie resolution to the given value and places the
+    unscaled original at coordinates x, y. Can be used for placing
+    subtitles/OSD in the resulting black bands.
+
+    <w>,<h>
+        Expanded width,height (default: original width,height). Negative
+        values for w and h are treated as offsets to the original size.
+
+        *EXAMPLE*:
+
+        `expand=0:-50:0:0`
+            Adds a 50 pixel border to the bottom of the picture.
+
+    <x>,<y>
+        position of original image on the expanded image (default: center)
+
+    <osd>
+        OSD/subtitle rendering
+
+        :0: disable (default)
+        :1: enable
+
+    <aspect>
+        Expands to fit an aspect instead of a resolution (default: 0).
+
+        *EXAMPLE*:
+
+        `expand=800:::::4/3`
+            Expands to 800x600, unless the source is higher resolution, in
+            which case it expands to fill a 4/3 aspect.
+
+    <round>
+        Rounds up to make both width and height divisible by <r> (default: 1).
+
+flip
+    Flips the image upside down. See also ``--flip``.
+
+mirror
+    Mirrors the image on the Y axis.
+
+rotate[=<0-7>]
+    Rotates the image by 90 degrees and optionally flips it. For values
+    between 4-7 rotation is only done if the movie geometry is portrait and
+    not landscape.
+
+    :0: Rotate by 90 degrees clockwise and flip (default).
+    :1: Rotate by 90 degrees clockwise.
+    :2: Rotate by 90 degrees counterclockwise.
+    :3: Rotate by 90 degrees counterclockwise and flip.
+
+scale[=w:h[:interlaced[:chr_drop[:par[:par2[:presize[:noup[:arnd]]]]]]]]
+    Scales the image with the software scaler (slow) and performs a YUV<->RGB
+    colorspace conversion (see also ``--sws``).
+
+    <w>,<h>
+        scaled width/height (default: original width/height)
+
+        *NOTE*: If ``--zoom`` is used, and underlying filters (including
+        libvo) are incapable of scaling, it defaults to d_width/d_height!
+
+        :0:      scaled d_width/d_height
+        :-1:     original width/height
+        :-2:     Calculate w/h using the other dimension and the prescaled
+                 aspect ratio.
+        :-3:     Calculate w/h using the other dimension and the original
+                 aspect ratio.
+        :-(n+8): Like -n above, but rounding the dimension to the closest
+                 multiple of 16.
+
+    <interlaced>
+        Toggle interlaced scaling.
+
+        :0: off (default)
+        :1: on
+
+    <chr_drop>
+        chroma skipping
+
+        :0: Use all available input lines for chroma.
+        :1: Use only every 2. input line for chroma.
+        :2: Use only every 4. input line for chroma.
+        :3: Use only every 8. input line for chroma.
+
+    <par>[:<par2>] (see also ``--sws``)
+        Set some scaling parameters depending on the type of scaler selected
+        with ``--sws``.
+
+        | --sws=2 (bicubic):  B (blurring) and C (ringing)
+        |     0.00:0.60 default
+        |     0.00:0.75 VirtualDub's "precise bicubic"
+        |     0.00:0.50 Catmull-Rom spline
+        |     0.33:0.33 Mitchell-Netravali spline
+        |     1.00:0.00 cubic B-spline
+
+        --sws=7 (gaussian): sharpness (0 (soft) - 100 (sharp))
+
+        --sws=9 (lanczos):  filter length (1-10)
+
+    <presize>
+        Scale to preset sizes.
+
+        :qntsc: 352x240 (NTSC quarter screen)
+        :qpal:  352x288 (PAL quarter screen)
+        :ntsc:  720x480 (standard NTSC)
+        :pal:   720x576 (standard PAL)
+        :sntsc: 640x480 (square pixel NTSC)
+        :spal:  768x576 (square pixel PAL)
+
+    <noup>
+        Disallow upscaling past the original dimensions.
+
+        :0: Allow upscaling (default).
+        :1: Disallow upscaling if one dimension exceeds its original value.
+        :2: Disallow upscaling if both dimensions exceed their original values.
+
+    <arnd>
+        Accurate rounding for the vertical scaler, which may be faster or
+        slower than the default rounding.
+
+        :0: Disable accurate rounding (default).
+        :1: Enable accurate rounding.
+
+dsize[=aspect|w:h:aspect-method:r]
+    Changes the intended display size/aspect at an arbitrary point in the
+    filter chain. Aspect can be given as a fraction (4/3) or floating point
+    number (1.33). Alternatively, you may specify the exact display width and
+    height desired. Note that this filter does *not* do any scaling itself; it
+    just affects what later scalers (software or hardware) will do when
+    auto-scaling to correct aspect.
+
+    <w>,<h>
+        New display width and height.
+
+        Can also be these special values:
+
+        :0:  original display width and height
+        :-1: original video width and height (default)
+        :-2: Calculate w/h using the other dimension and the original display
+             aspect ratio.
+        :-3: Calculate w/h using the other dimension and the original video
+             aspect ratio.
+
+        *EXAMPLE*:
+
+        ``dsize=800:-2``
+            Specifies a display resolution of 800x600 for a 4/3 aspect video,
+            or 800x450 for a 16/9 aspect video.
+
+    <aspect-method>
+        Modifies width and height according to original aspect ratios.
+
+        :-1: Ignore original aspect ratio (default).
+        :0:  Keep display aspect ratio by using <w> and <h> as maximum
+             resolution.
+        :1:  Keep display aspect ratio by using <w> and <h> as minimum
+             resolution.
+        :2:  Keep video aspect ratio by using <w> and <h> as maximum
+             resolution.
+        :3:  Keep video aspect ratio by using <w> and <h> as minimum
+             resolution.
+
+        *EXAMPLE*:
+
+        ``dsize=800:600:0``
+            Specifies a display resolution of at most 800x600, or smaller, in
+            order to keep aspect.
+
+    <r>
+        Rounds up to make both width and height divisible by <r> (default: 1).
+
+yvu9
+    Forces software YVU9 to YV12 colorspace conversion. Deprecated in favor of
+    the software scaler.
+
+yuvcsp
+    Clamps YUV color values to the CCIR 601 range without doing real
+    conversion.
+
+palette
+    RGB/BGR 8 -> 15/16/24/32bpp colorspace conversion using palette.
+
+format[=fourcc[:outfourcc]]
+    Restricts the colorspace for the next filter without doing any conversion.
+    Use together with the scale filter for a real conversion.
+
+    *NOTE*: For a list of available formats see ``format=fmt=help``.
+
+    <fourcc>
+        format name like rgb15, bgr24, yv12, etc (default: yuy2)
+    <outfourcc>
+        Format name that should be substituted for the output. If this is not
+        100% compatible with the <fourcc> value it will crash.
+
+        *EXAMPLE*
+
+        ====================== =====================
+        Valid                  Invalid (will crash)
+        ====================== =====================
+        ``format=rgb24:bgr24`` ``format=rgb24:yv12``
+        ``format=yuyv:yuy2``
+        ====================== =====================
+
+noformat[=fourcc]
+    Restricts the colorspace for the next filter without doing any conversion.
+    Unlike the format filter, this will allow any colorspace except the one
+    you specify.
+
+    *NOTE*: For a list of available formats see ``noformat=fmt=help``.
+
+    <fourcc>
+        format name like rgb15, bgr24, yv12, etc (default: yv12)
+
+pp[=filter1[:option1[:option2...]]/[-]filter2...]
+    Enables the specified chain of postprocessing subfilters. Subfilters must
+    be separated by '/' and can be disabled by prepending a '-'. Each
+    subfilter and some options have a short and a long name that can be used
+    interchangeably, i.e. dr/dering are the same. All subfilters share common
+    options to determine their scope:
+
+    a/autoq
+        Automatically switch the subfilter off if the CPU is too slow.
+    c/chrom
+        Do chrominance filtering, too (default).
+    y/nochrom
+        Do luminance filtering only (no chrominance).
+    n/noluma
+        Do chrominance filtering only (no luminance).
+
+    *NOTE*: ``--pphelp`` shows a list of available subfilters.
+
+    Available subfilters are:
+
+    hb/hdeblock[:difference[:flatness]]
+        horizontal deblocking filter
+
+        :<difference>: Difference factor where higher values mean more
+                       deblocking (default: 32).
+        :<flatness>:   Flatness threshold where lower values mean more
+                       deblocking (default: 39).
+
+    vb/vdeblock[:difference[:flatness]]
+        vertical deblocking filter
+
+        :<difference>: Difference factor where higher values mean more
+                       deblocking (default: 32).
+        :<flatness>:   Flatness threshold where lower values mean more
+                       deblocking (default: 39).
+
+    ha/hadeblock[:difference[:flatness]]
+        accurate horizontal deblocking filter
+
+        :<difference>: Difference factor where higher values mean more
+                       deblocking (default: 32).
+        :<flatness>:   Flatness threshold where lower values mean more
+                       deblocking (default: 39).
+
+    va/vadeblock[:difference[:flatness]]
+        accurate vertical deblocking filter
+
+        :<difference>: Difference factor where higher values mean more
+                       deblocking (default: 32).
+        :<flatness>:   Flatness threshold where lower values mean more
+                       deblocking (default: 39).
+
+    The horizontal and vertical deblocking filters share the difference and
+    flatness values so you cannot set different horizontal and vertical
+    thresholds.
+
+    h1/x1hdeblock
+        experimental horizontal deblocking filter
+
+    v1/x1vdeblock
+        experimental vertical deblocking filter
+
+    dr/dering
+        deringing filter
+
+    tn/tmpnoise[:threshold1[:threshold2[:threshold3]]]
+        temporal noise reducer
+
+        :<threshold1>: larger -> stronger filtering
+        :<threshold2>: larger -> stronger filtering
+        :<threshold3>: larger -> stronger filtering
+
+    al/autolevels[:f/fullyrange]
+        automatic brightness / contrast correction
+
+        :f/fullyrange: Stretch luminance to (0-255).
+
+    lb/linblenddeint
+        Linear blend deinterlacing filter that deinterlaces the given block by
+        filtering all lines with a (1 2 1) filter.
+
+    li/linipoldeint
+        Linear interpolating deinterlacing filter that deinterlaces the given
+        block by linearly interpolating every second line.
+
+    ci/cubicipoldeint
+        Cubic interpolating deinterlacing filter deinterlaces the given block
+        by cubically interpolating every second line.
+
+    md/mediandeint
+        Median deinterlacing filter that deinterlaces the given block by
+        applying a median filter to every second line.
+
+    fd/ffmpegdeint
+        FFmpeg deinterlacing filter that deinterlaces the given block by
+        filtering every second line with a (-1 4 2 4 -1) filter.
+
+    l5/lowpass5
+        Vertically applied FIR lowpass deinterlacing filter that deinterlaces
+        the given block by filtering all lines with a (-1 2 6 2 -1) filter.
+
+    fq/forceQuant[:quantizer]
+        Overrides the quantizer table from the input with the constant
+        quantizer you specify.
+
+        :<quantizer>: quantizer to use
+
+    de/default
+        default pp filter combination (hb:a,vb:a,dr:a)
+
+    fa/fast
+        fast pp filter combination (h1:a,v1:a,dr:a)
+
+    ac
+        high quality pp filter combination (ha:a:128:7,va:a,dr:a)
+
+    *EXAMPLE*:
+
+    ``--vf=pp=hb/vb/dr/al``
+        horizontal and vertical deblocking, deringing and automatic
+        brightness/contrast
+
+    ``--vf=pp=de/-al``
+        default filters without brightness/contrast correction
+
+    ``--vf=pp=default/tmpnoise:1:2:3``
+        Enable default filters & temporal denoiser.
+
+    ``--vf=pp=hb:y/vb:a``
+        Horizontal deblocking on luminance only, and switch vertical
+        deblocking on or off automatically depending on available CPU time.
+
+spp[=quality[:qp[:mode]]]
+    Simple postprocessing filter that compresses and decompresses the image at
+    several (or - in the case of quality level 6 - all) shifts and averages
+    the results.
+
+    <quality>
+        0-6 (default: 3)
+
+    <qp>
+        Force quantization parameter (default: 0, use QP from video).
+
+    <mode>
+
+        :0: hard thresholding (default)
+        :1: soft thresholding (better deringing, but blurrier)
+        :4: like 0, but also use B-frames' QP (may cause flicker)
+        :5: like 1, but also use B-frames' QP (may cause flicker)
+
+uspp[=quality[:qp]]
+    Ultra simple & slow postprocessing filter that compresses and decompresses
+    the image at several (or - in the case of quality level 8 - all) shifts
+    and averages the results.
+
+    The way this differs from the behavior of spp is that uspp actually
+    encodes & decodes each case with libavcodec Snow, whereas spp uses a
+    simplified intra only 8x8 DCT similar to MJPEG.
+
+    <quality>
+        0-8 (default: 3)
+
+    <qp>
+        Force quantization parameter (default: 0, use QP from video).
+
+fspp[=quality[:qp[:strength[:bframes]]]]
+    faster version of the simple postprocessing filter
+
+    <quality>
+        4-5 (equivalent to spp; default: 4)
+
+    <qp>
+        Force quantization parameter (default: 0, use QP from video).
+
+    <-15-32>
+        Filter strength, lower values mean more details but also more
+        artifacts, while higher values make the image smoother but also
+        blurrier (default: 0 - PSNR optimal).
+
+    <bframes>
+        0: do not use QP from B-frames (default)
+        1: use QP from B-frames too (may cause flicker)
+
+pp7[=qp[:mode]]
+    Variant of the spp filter, similar to spp=6 with 7 point DCT where only
+    the center sample is used after IDCT.
+
+    <qp>
+        Force quantization parameter (default: 0, use QP from video).
+
+    <mode>
+        :0: hard thresholding
+        :1: soft thresholding (better deringing, but blurrier)
+        :2: medium thresholding (default, good results)
+
+qp=equation
+    quantization parameter (QP) change filter
+
+    <equation>
+        some equation like ``2+2*sin(PI*qp)``
+
+geq=equation
+    generic equation change filter
+
+    <equation>
+        Some equation, e.g. ``p(W-X\,Y)`` to flip the image horizontally. You
+        can use whitespace to make the equation more readable. There are a
+        couple of constants that can be used in the equation:
+
+        :PI:      the number pi
+        :E:       the number e
+        :X / Y:   the coordinates of the current sample
+        :W / H:   width and height of the image
+        :SW / SH: width/height scale depending on the currently filtered plane,
+                  e.g. 1,1 and 0.5,0.5 for YUV 4:2:0.
+        :p(x,y):  returns the value of the pixel at location x/y of the current
+                  plane.
+
+test
+    Generate various test patterns.
+
+rgbtest[=width:height]
+    Generate an RGB test pattern useful for detecting RGB vs BGR issues. You
+    should see a red, green and blue stripe from top to bottom.
+
+    <width>
+        Desired width of generated image (default: 0). 0 means width of input
+        image.
+
+    <height>
+        Desired height of generated image (default: 0). 0 means height of
+        input image.
+
+lavc[=quality:fps]
+    Fast software YV12 to MPEG-1 conversion with libavcodec for use with
+    DVB/DXR3/IVTV/V4L2.
+
+    <quality>
+        :1-31: fixed qscale
+        :32-:  fixed bitrate in kbits
+
+    <fps>
+        force output fps (float value) (default: 0, autodetect based on height)
+
+dvbscale[=aspect]
+    Set up optimal scaling for DVB cards, scaling the x axis in hardware and
+    calculating the y axis scaling in software to keep aspect. Only useful
+    together with expand and scale.
+
+    <aspect>
+        Control aspect ratio, calculate as ``DVB_HEIGHT*ASPECTRATIO`` (default:
+        ``576*4/3=768``), set it to ``576*(16/9)=1024`` for a 16:9 TV.
+
+    *EXAMPLE*:
+
+    ``--vf=dvbscale,scale=-1:0,expand=-1:576:-1:-1:1,lavc``
+        FIXME: Explain what this does.
+
+noise[=luma[u][t|a][h][p]:chroma[u][t|a][h][p]]
+    Adds noise.
+
+    :<0-100>: luma noise
+    :<0-100>: chroma noise
+    :u:       uniform noise (gaussian otherwise)
+    :t:       temporal noise (noise pattern changes between frames)
+    :a:       averaged temporal noise (smoother, but a lot slower)
+    :h:       high quality (slightly better looking, slightly slower)
+    :p:       mix random noise with a (semi)regular pattern
+
+denoise3d[=luma_spatial:chroma_spatial:luma_tmp:chroma_tmp]
+    This filter aims to reduce image noise producing smooth images and making
+    still images really still (This should enhance compressibility.).
+
+    <luma_spatial>
+        spatial luma strength (default: 4)
+    <chroma_spatial>
+        spatial chroma strength (default: 3)
+    <luma_tmp>
+        luma temporal strength (default: 6)
+    <chroma_tmp>
+        chroma temporal strength (default:
+        ``luma_tmp*chroma_spatial/luma_spatial``)
+
+hqdn3d[=luma_spatial:chroma_spatial:luma_tmp:chroma_tmp]
+    High precision/quality version of the denoise3d filter. Parameters and
+    usage are the same.
+
+ow[=depth[:luma_strength[:chroma_strength]]]
+    Overcomplete Wavelet denoiser.
+
+    <depth>
+        Larger depth values will denoise lower frequency components more, but
+        slow down filtering (default: 8).
+    <luma_strength>
+        luma strength (default: 1.0)
+    <chroma_strength>
+        chroma strength (default: 1.0)
+
+eq[=brightness:contrast] (OBSOLETE)
+    Software equalizer with interactive controls just like the hardware
+    equalizer, for cards/drivers that do not support brightness and contrast
+    controls in hardware.
+
+    <-100-100>
+        initial brightness
+    <-100-100>
+        initial contrast
+
+eq2[=gamma:contrast:brightness:saturation:rg:gg:bg:weight]
+    Alternative software equalizer that uses lookup tables (very slow),
+    allowing gamma correction in addition to simple brightness and contrast
+    adjustment. Note that it uses the same MMX optimized code as ``--vf=eq``
+    if all gamma values are 1.0. The parameters are given as floating point
+    values.
+
+    <0.1-10>
+        initial gamma value (default: 1.0)
+    <-2-2>
+        initial contrast, where negative values result in a negative image
+        (default: 1.0)
+    <-1-1>
+        initial brightness (default: 0.0)
+    <0-3>
+        initial saturation (default: 1.0)
+    <0.1-10>
+        gamma value for the red component (default: 1.0)
+    <0.1-10>
+        gamma value for the green component (default: 1.0)
+    <0.1-10>
+        gamma value for the blue component (default: 1.0)
+    <0-1>
+        The weight parameter can be used to reduce the effect of a high gamma
+        value on bright image areas, e.g. keep them from getting overamplified
+        and just plain white. A value of 0.0 turns the gamma correction all
+        the way down while 1.0 leaves it at its full strength (default: 1.0).
+
+hue[=hue:saturation]
+    Software equalizer with interactive controls just like the hardware
+    equalizer, for cards/drivers that do not support hue and saturation
+    controls in hardware.
+
+    <-180-180>
+        initial hue (default: 0.0)
+    <-100-100>
+        initial saturation, where negative values result in a negative chroma
+        (default: 1.0)
+
+halfpack[=f]
+    Convert planar YUV 4:2:0 to half-height packed 4:2:2, downsampling luma
+    but keeping all chroma samples. Useful for output to low-resolution
+    display devices when hardware downscaling is poor quality or is not
+    available. Can also be used as a primitive luma-only deinterlacer with
+    very low CPU usage.
+
+    <f>
+        By default, halfpack averages pairs of lines when downsampling. Any
+        value different from 0 or 1 gives the default (averaging) behavior.
+
+        :0: Only use even lines when downsampling.
+        :1: Only use odd lines when downsampling.
+
+ilpack[=mode]
+    When interlaced video is stored in YUV 4:2:0 formats, chroma interlacing
+    does not line up properly due to vertical downsampling of the chroma
+    channels. This filter packs the planar 4:2:0 data into YUY2 (4:2:2) format
+    with the chroma lines in their proper locations, so that in any given
+    scanline, the luma and chroma data both come from the same field.
+
+    <mode>
+        Select the sampling mode.
+
+        :0: nearest-neighbor sampling, fast but incorrect
+        :1: linear interpolation (default)
+
+decimate[=max:hi:lo:frac]
+    Drops frames that do not differ greatly from the previous frame in order
+    to reduce framerate. The main use of this filter is for very-low- bitrate
+    encoding (e.g. streaming over dialup modem), but it could in theory be
+    used for fixing movies that were inverse-telecined incorrectly.
+
+    <max>
+        Sets the maximum number of consecutive frames which can be dropped (if
+        positive), or the minimum interval between dropped frames (if
+        negative).
+    <hi>,<lo>,<frac>
+        A frame is a candidate for dropping if no 8x8 region differs by more
+        than a threshold of <hi>, and if not more than <frac> portion (1
+        meaning the whole image) differs by more than a threshold of <lo>.
+        Values of <hi> and <lo> are for 8x8 pixel blocks and represent actual
+        pixel value differences, so a threshold of 64 corresponds to 1 unit of
+        difference for each pixel, or the same spread out differently over the
+        block.
+
+dint[=sense:level]
+    The drop-deinterlace (dint) filter detects and drops the first from a set
+    of interlaced video frames.
+
+    <0.0-1.0>
+        relative difference between neighboring pixels (default: 0.1)
+    <0.0-1.0>
+        What part of the image has to be detected as interlaced to drop the
+        frame (default: 0.15).
+
+lavcdeint (OBSOLETE)
+    FFmpeg deinterlacing filter, same as ``--vf=pp=fd``
+
+kerndeint[=thresh[:map[:order[:sharp[:twoway]]]]]
+    Donald Graft's adaptive kernel deinterlacer. Deinterlaces parts of a video
+    if a configurable threshold is exceeded.
+
+    <0-255>
+        threshold (default: 10)
+    <map>
+        :0: Ignore pixels exceeding the threshold (default).
+        :1: Paint pixels exceeding the threshold white.
+
+    <order>
+        :0: Leave fields alone (default).
+        :1: Swap fields.
+
+    <sharp>
+        :0: Disable additional sharpening (default).
+        :1: Enable additional sharpening.
+
+    <twoway>
+        :0: Disable twoway sharpening (default).
+        :1: Enable twoway sharpening.
+
+unsharp[=l|cWxH:amount[:l|cWxH:amount]]
+    unsharp mask / gaussian blur
+
+    l
+        Apply effect on luma component.
+
+    c
+        Apply effect on chroma components.
+
+    <width>x<height>
+        width and height of the matrix, odd sized in both directions (min =
+        3x3, max = 13x11 or 11x13, usually something between 3x3 and 7x7)
+
+    amount
+        Relative amount of sharpness/blur to add to the image (a sane range
+        should be -1.5-1.5).
+
+        :<0: blur
+        :>0: sharpen
+
+swapuv
+    Swap U & V plane.
+
+il[=d|i][s][:[d|i][s]]
+    (De)interleaves lines. The goal of this filter is to add the ability to
+    process interlaced images pre-field without deinterlacing them. You can
+    filter your interlaced DVD and play it on a TV without breaking the
+    interlacing. While deinterlacing (with the postprocessing filter) removes
+    interlacing permanently (by smoothing, averaging, etc) deinterleaving
+    splits the frame into 2 fields (so called half pictures), so you can
+    process (filter) them independently and then re-interleave them.
+
+    :d: deinterleave (placing one above the other)
+    :i: interleave
+    :s: swap fields (exchange even & odd lines)
+
+fil[=i|d]
+    (De)interleaves lines. This filter is very similar to the il filter but
+    much faster, the main disadvantage is that it does not always work.
+    Especially if combined with other filters it may produce randomly messed
+    up images, so be happy if it works but do not complain if it does not for
+    your combination of filters.
+
+    :d: Deinterleave fields, placing them side by side.
+    :i: Interleave fields again (reversing the effect of fil=d).
+
+field[=n]
+    Extracts a single field from an interlaced image using stride arithmetic
+    to avoid wasting CPU time. The optional argument n specifies whether to
+    extract the even or the odd field (depending on whether n is even or odd).
+
+detc[=var1=value1:var2=value2:...]
+    Attempts to reverse the 'telecine' process to recover a clean,
+    non-interlaced stream at film framerate. This was the first and most
+    primitive inverse telecine filter to be added to MPlayer. It works by
+    latching onto the telecine 3:2 pattern and following it as long as
+    possible. This makes it suitable for perfectly-telecined material, even in
+    the presence of a fair degree of noise, but it will fail in the presence
+    of complex post-telecine edits. Development on this filter is no longer
+    taking place, as ivtc, pullup, and filmdint are better for most
+    applications. The following arguments (see syntax above) may be used to
+    control detc's behavior:
+
+    <dr>
+        Set the frame dropping mode.
+
+        :0: Do not drop frames to maintain fixed output framerate (default).
+        :1: Always drop a frame when there have been no drops or telecine
+            merges in the past 5 frames.
+        :2: Always maintain exact 5:4 input to output frame ratio.
+
+    <am>
+        Analysis mode.
+
+        :0: Fixed pattern with initial frame number specified by <fr>.
+        :1: aggressive search for telecine pattern (default)
+
+    <fr>
+        Set initial frame number in sequence. 0-2 are the three clean
+        progressive frames; 3 and 4 are the two interlaced frames. The
+        default, -1, means 'not in telecine sequence'. The number specified
+        here is the type for the imaginary previous frame before the movie
+        starts.
+
+    <t0>, <t1>, <t2>, <t3>
+        Threshold values to be used in certain modes.
+
+ivtc[=1]
+    Experimental 'stateless' inverse telecine filter. Rather than trying to
+    lock on to a pattern like the detc filter does, ivtc makes its decisions
+    independently for each frame. This will give much better results for
+    material that has undergone heavy editing after telecine was applied, but
+    as a result it is not as forgiving of noisy input, for example TV capture.
+    The optional parameter (ivtc=1) corresponds to the dr=1 option for the
+    detc filter, and should not be used with MPlayer. Further development on
+    ivtc has stopped, as the pullup and filmdint filters appear to be much
+    more accurate.
+
+pullup[=jl:jr:jt:jb:sb:mp]
+    Third-generation pulldown reversal (inverse telecine) filter, capable of
+    handling mixed hard-telecine, 24000/1001 fps progressive, and 30000/1001
+    fps progressive content. The pullup filter is designed to be much more
+    robust than detc or ivtc, by taking advantage of future context in making
+    its decisions. Like ivtc, pullup is stateless in the sense that it does
+    not lock onto a pattern to follow, but it instead looks forward to the
+    following fields in order to identify matches and rebuild progressive
+    frames. It is still under development, but believed to be quite accurate.
+
+    jl, jr, jt, and jb
+        These options set the amount of "junk" to ignore at the left, right,
+        top, and bottom of the image, respectively. Left/right are in units of
+        8 pixels, while top/bottom are in units of 2 lines. The default is 8
+        pixels on each side.
+
+    sb (strict breaks)
+        Setting this option to 1 will reduce the chances of pullup generating
+        an occasional mismatched frame, but it may also cause an excessive
+        number of frames to be dropped during high motion sequences.
+        Conversely, setting it to -1 will make pullup match fields more
+        easily. This may help processing of video where there is slight
+        blurring between the fields, but may also cause there to be interlaced
+        frames in the output.
+
+    mp (metric plane)
+        This option may be set to 1 or 2 to use a chroma plane instead of the
+        luma plane for doing pullup's computations. This may improve accuracy
+        on very clean source material, but more likely will decrease accuracy,
+        especially if there is chroma noise (rainbow effect) or any grayscale
+        video. The main purpose of setting mp to a chroma plane is to reduce
+        CPU load and make pullup usable in realtime on slow machines.
+
+filmdint[=options]
+    Inverse telecine filter, similar to the pullup filter above. It is
+    designed to handle any pulldown pattern, including mixed soft and hard
+    telecine and limited support for movies that are slowed down or sped up
+    from their original framerate for TV. Only the luma plane is used to find
+    the frame breaks. If a field has no match, it is deinterlaced with simple
+    linear approximation. If the source is MPEG-2, this must be the first
+    filter to allow access to the field-flags set by the MPEG-2 decoder.
+    Depending on the source MPEG, you may be fine ignoring this advice, as
+    long as you do not see lots of "Bottom-first field" warnings. With no
+    options it does normal inverse telecine. When this filter is used with
+    MPlayer, it will result in an uneven framerate during playback, but it is
+    still generally better than using pp=lb or no deinterlacing at all.
+    Multiple options can be specified separated by /.
+
+    crop=<w>:<h>:<x>:<y>
+        Just like the crop filter, but faster, and works on mixed hard and
+        soft telecined content as well as when y is not a multiple of 4. If x
+        or y would require cropping fractional pixels from the chroma planes,
+        the crop area is extended. This usually means that x and y must be
+        even.
+
+    io=<ifps>:<ofps>
+        For each ifps input frames the filter will output ofps frames. This
+        could be used to filter movies that are broadcast on TV at a frame
+        rate different from their original framerate.
+
+    luma_only=<n>
+        If n is nonzero, the chroma plane is copied unchanged. This is useful
+        for YV12 sampled TV, which discards one of the chroma fields.
+
+    mmx2=<n>
+        On x86, if n=1, use MMX2 optimized functions, if n=2, use 3DNow!
+        optimized functions, otherwise, use plain C. If this option is not
+        specified, MMX2 and 3DNow! are auto-detected, use this option to
+        override auto-detection.
+
+    fast=<n>
+        The larger n will speed up the filter at the expense of accuracy. The
+        default value is n=3. If n is odd, a frame immediately following a