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ReStructuredText
518 lines
22 KiB
ReStructuredText
VIDEO OUTPUT DRIVERS
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====================
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Video output drivers are interfaces to different video output facilities. The
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syntax is:
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``--vo=<driver1,driver2,...[,]>``
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Specify a priority list of video output drivers to be used.
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If the list has a trailing ``,``, mpv will fall back on drivers not contained
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in the list.
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.. note::
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See ``--vo=help`` for a list of compiled-in video output drivers.
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The recommended output driver is ``--vo=opengl``, which is the default. All
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other drivers are for compatibility or special purposes. If the default
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does not work, it will fallback to other drivers (in the same order as
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listed by ``--vo=help``).
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Available video output drivers are:
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``xv`` (X11 only)
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Uses the XVideo extension to enable hardware-accelerated display. This is
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the most compatible VO on X, but may be low-quality, and has issues with
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OSD and subtitle display.
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.. note:: This driver is for compatibility with old systems.
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The following global options are supported by this video output:
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``--xv-adaptor=<number>``
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Select a specific XVideo adapter (check xvinfo results).
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``--xv-port=<number>``
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Select a specific XVideo port.
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``--xv-ck=<cur|use|set>``
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Select the source from which the color key is taken (default: cur).
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cur
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The default takes the color key currently set in Xv.
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use
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Use but do not set the color key from mpv (use the ``--colorkey``
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option to change it).
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set
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Same as use but also sets the supplied color key.
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``--xv-ck-method=<none|man|bg|auto>``
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Sets the color key drawing method (default: man).
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none
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Disables color-keying.
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man
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Draw the color key manually (reduces flicker in some cases).
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bg
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Set the color key as window background.
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auto
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Let Xv draw the color key.
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``--xv-colorkey=<number>``
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Changes the color key to an RGB value of your choice. ``0x000000`` is
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black and ``0xffffff`` is white.
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``--xv-buffers=<number>``
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Number of image buffers to use for the internal ringbuffer (default: 2).
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Increasing this will use more memory, but might help with the X server
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not responding quickly enough if video FPS is close to or higher than
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the display refresh rate.
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``x11`` (X11 only)
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Shared memory video output driver without hardware acceleration that works
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whenever X11 is present.
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.. note:: This is a fallback only, and should not be normally used.
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``vdpau`` (X11 only)
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Uses the VDPAU interface to display and optionally also decode video.
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Hardware decoding is used with ``--hwdec=vdpau``.
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.. note::
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Earlier versions of mpv (and MPlayer, mplayer2) provided sub-options
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to tune vdpau post-processing, like ``deint``, ``sharpen``, ``denoise``,
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``chroma-deint``, ``pullup``, ``hqscaling``. These sub-options are
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deprecated, and you should use the ``vdpaupp`` video filter instead.
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The following global options are supported by this video output:
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``--vo-vdpau-sharpen=<-1-1>``
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(Deprecated. See note about ``vdpaupp``.)
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For positive values, apply a sharpening algorithm to the video, for
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negative values a blurring algorithm (default: 0).
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``--vo-vdpau-denoise=<0-1>``
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(Deprecated. See note about ``vdpaupp``.)
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Apply a noise reduction algorithm to the video (default: 0; no noise
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reduction).
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``--vo-vdpau-deint=<-4-4>``
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(Deprecated. See note about ``vdpaupp``.)
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Select deinterlacing mode (default: 0). In older versions (as well as
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MPlayer/mplayer2) you could use this option to enable deinterlacing.
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This doesn't work anymore, and deinterlacing is enabled with either
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the ``d`` key (by default mapped to the command ``cycle deinterlace``),
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or the ``--deinterlace`` option. Also, to select the default deint mode,
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you should use something like ``--vf-defaults=vdpaupp:deint-mode=temporal``
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instead of this sub-option.
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0
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Pick the ``vdpaupp`` video filter default, which corresponds to 3.
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1
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Show only first field.
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2
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Bob deinterlacing.
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3
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Motion-adaptive temporal deinterlacing. May lead to A/V desync
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with slow video hardware and/or high resolution.
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4
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Motion-adaptive temporal deinterlacing with edge-guided spatial
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interpolation. Needs fast video hardware.
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``--vo-vdpau-chroma-deint``
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(Deprecated. See note about ``vdpaupp``.)
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Makes temporal deinterlacers operate both on luma and chroma (default).
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Use no-chroma-deint to solely use luma and speed up advanced
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deinterlacing. Useful with slow video memory.
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``--vo-vdpau-pullup``
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(Deprecated. See note about ``vdpaupp``.)
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Try to apply inverse telecine, needs motion adaptive temporal
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deinterlacing.
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``--vo-vdpau-hqscaling=<0-9>``
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(Deprecated. See note about ``vdpaupp``.)
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0
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Use default VDPAU scaling (default).
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1-9
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Apply high quality VDPAU scaling (needs capable hardware).
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``--vo-vdpau-fps=<number>``
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Override autodetected display refresh rate value (the value is needed
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for framedrop to allow video playback rates higher than display
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refresh rate, and for vsync-aware frame timing adjustments). Default 0
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means use autodetected value. A positive value is interpreted as a
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refresh rate in Hz and overrides the autodetected value. A negative
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value disables all timing adjustment and framedrop logic.
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``--vo-vdpau-composite-detect``
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NVIDIA's current VDPAU implementation behaves somewhat differently
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under a compositing window manager and does not give accurate frame
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timing information. With this option enabled, the player tries to
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detect whether a compositing window manager is active. If one is
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detected, the player disables timing adjustments as if the user had
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specified ``fps=-1`` (as they would be based on incorrect input). This
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means timing is somewhat less accurate than without compositing, but
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with the composited mode behavior of the NVIDIA driver, there is no
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hard playback speed limit even without the disabled logic. Enabled by
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default, use ``--vo-vdpau-composite-detect=no`` to disable.
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``--vo-vdpau-queuetime-windowed=<number>`` and ``queuetime-fs=<number>``
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Use VDPAU's presentation queue functionality to queue future video
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frame changes at most this many milliseconds in advance (default: 50).
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See below for additional information.
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``--vo-vdpau-output-surfaces=<2-15>``
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Allocate this many output surfaces to display video frames (default:
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3). See below for additional information.
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``--vo-vdpau-colorkey=<#RRGGBB|#AARRGGBB>``
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Set the VDPAU presentation queue background color, which in practice
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is the colorkey used if VDPAU operates in overlay mode (default:
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``#020507``, some shade of black). If the alpha component of this value
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is 0, the default VDPAU colorkey will be used instead (which is usually
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green).
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``--vo-vdpau-force-yuv``
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Never accept RGBA input. This means mpv will insert a filter to convert
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to a YUV format before the VO. Sometimes useful to force availability
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of certain YUV-only features, like video equalizer or deinterlacing.
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Using the VDPAU frame queuing functionality controlled by the queuetime
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options makes mpv's frame flip timing less sensitive to system CPU load and
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allows mpv to start decoding the next frame(s) slightly earlier, which can
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reduce jitter caused by individual slow-to-decode frames. However, the
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NVIDIA graphics drivers can make other window behavior such as window moves
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choppy if VDPAU is using the blit queue (mainly happens if you have the
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composite extension enabled) and this feature is active. If this happens on
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your system and it bothers you then you can set the queuetime value to 0 to
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disable this feature. The settings to use in windowed and fullscreen mode
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are separate because there should be no reason to disable this for
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fullscreen mode (as the driver issue should not affect the video itself).
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You can queue more frames ahead by increasing the queuetime values and the
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``output_surfaces`` count (to ensure enough surfaces to buffer video for a
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certain time ahead you need at least as many surfaces as the video has
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frames during that time, plus two). This could help make video smoother in
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some cases. The main downsides are increased video RAM requirements for
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the surfaces and laggier display response to user commands (display
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changes only become visible some time after they're queued). The graphics
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driver implementation may also have limits on the length of maximum
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queuing time or number of queued surfaces that work well or at all.
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``direct3d`` (Windows only)
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Video output driver that uses the Direct3D interface.
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.. note:: This driver is for compatibility with systems that don't provide
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proper OpenGL drivers, and where ANGLE does not perform well.
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.. note:: Before to 0.21.0, ``direct3d_shaders`` and ``direct3d`` were
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different, with ``direct3d`` not using shader by default. Now
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both use shaders by default, and ``direct3d_shaders`` is a
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deprecated alias. Use the ``--vo-direct3d-prefer-stretchrect``
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or the ``--vo-direct3d-disable-shaders`` options to get the old
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behavior of ``direct3d``.
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The following global options are supported by this video output:
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``--vo-direct3d-prefer-stretchrect``
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Use ``IDirect3DDevice9::StretchRect`` over other methods if possible.
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``--vo-direct3d-disable-stretchrect``
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Never render the video using ``IDirect3DDevice9::StretchRect``.
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``--vo-direct3d-disable-textures``
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Never render the video using D3D texture rendering. Rendering with
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textures + shader will still be allowed. Add ``disable-shaders`` to
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completely disable video rendering with textures.
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``--vo-direct3d-disable-shaders``
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Never use shaders when rendering video.
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``--vo-direct3d-only-8bit``
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Never render YUV video with more than 8 bits per component.
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Using this flag will force software conversion to 8-bit.
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``--vo-direct3d-disable-texture-align``
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Normally texture sizes are always aligned to 16. With this option
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enabled, the video texture will always have exactly the same size as
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the video itself.
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Debug options. These might be incorrect, might be removed in the future,
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might crash, might cause slow downs, etc. Contact the developers if you
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actually need any of these for performance or proper operation.
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``--vo-direct3d-force-power-of-2``
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Always force textures to power of 2, even if the device reports
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non-power-of-2 texture sizes as supported.
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``--vo-direct3d-texture-memory=<mode>``
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Only affects operation with shaders/texturing enabled, and (E)OSD.
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Possible values:
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``default`` (default)
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Use ``D3DPOOL_DEFAULT``, with a ``D3DPOOL_SYSTEMMEM`` texture for
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locking. If the driver supports ``D3DDEVCAPS_TEXTURESYSTEMMEMORY``,
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``D3DPOOL_SYSTEMMEM`` is used directly.
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``default-pool``
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Use ``D3DPOOL_DEFAULT``. (Like ``default``, but never use a
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shadow-texture.)
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``default-pool-shadow``
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Use ``D3DPOOL_DEFAULT``, with a ``D3DPOOL_SYSTEMMEM`` texture for
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locking. (Like ``default``, but always force the shadow-texture.)
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``managed``
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Use ``D3DPOOL_MANAGED``.
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``scratch``
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Use ``D3DPOOL_SCRATCH``, with a ``D3DPOOL_SYSTEMMEM`` texture for
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locking.
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``--vo-direct3d-swap-discard``
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Use ``D3DSWAPEFFECT_DISCARD``, which might be faster.
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Might be slower too, as it must(?) clear every frame.
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``--vo-direct3d-exact-backbuffer``
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Always resize the backbuffer to window size.
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``opengl``
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OpenGL video output driver. It supports extended scaling methods, dithering
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and color management.
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See `OpenGL renderer options`_ for options specific to this VO.
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By default, it tries to use fast and fail-safe settings. Use the
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``opengl-hq`` profile to use this driver with defaults set to high
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quality rendering. (This profile is also the replacement for
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``--vo=opengl-hq``.) The profile can be applied with ``--profile=opengl-hq``
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and its contents can be viewed with ``--show-profile=opengl-hq``.
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Requires at least OpenGL 2.1.
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Some features are available with OpenGL 3 capable graphics drivers only
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(or if the necessary extensions are available).
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OpenGL ES 2.0 and 3.0 are supported as well.
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Hardware decoding over OpenGL-interop is supported to some degree. Note
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that in this mode, some corner case might not be gracefully handled, and
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color space conversion and chroma upsampling is generally in the hand of
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the hardware decoder APIs.
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``opengl`` makes use of FBOs by default. Sometimes you can achieve better
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quality or performance by changing the ``--opengl-fbo-format`` option to
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``rgb16f``, ``rgb32f`` or ``rgb``. Known problems include Mesa/Intel not
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accepting ``rgb16``, Mesa sometimes not being compiled with float texture
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support, and some OS X setups being very slow with ``rgb16`` but fast
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with ``rgb32f``. If you have problems, you can also try enabling the
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``--opengl-dumb-mode=yes`` option.
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``sdl``
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SDL 2.0+ Render video output driver, depending on system with or without
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hardware acceleration. Should work on all platforms supported by SDL 2.0.
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For tuning, refer to your copy of the file ``SDL_hints.h``.
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.. note:: This driver is for compatibility with systems that don't provide
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proper graphics drivers, or which support GLES only.
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The following global options are supported by this video output:
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``--sdl-sw``
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Continue even if a software renderer is detected.
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``--sdl-switch-mode``
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Instruct SDL to switch the monitor video mode when going fullscreen.
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``vaapi``
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Intel VA API video output driver with support for hardware decoding. Note
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that there is absolutely no reason to use this, other than compatibility.
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This is low quality, and has issues with OSD.
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.. note:: This driver is for compatibility with crappy systems. You can
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use vaapi hardware decoding with ``--vo=opengl`` too.
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The following global options are supported by this video output:
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``--vo-vaapi-scaling=<algorithm>``
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default
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Driver default (mpv default as well).
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fast
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Fast, but low quality.
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hq
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Unspecified driver dependent high-quality scaling, slow.
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nla
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``non-linear anamorphic scaling``
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``--vo-vaapi-deint-mode=<mode>``
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Select deinterlacing algorithm. Note that by default deinterlacing is
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initially always off, and needs to be enabled with the ``d`` key
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(default key binding for ``cycle deinterlace``).
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This option doesn't apply if libva supports video post processing (vpp).
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In this case, the default for ``deint-mode`` is ``no``, and enabling
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deinterlacing via user interaction using the methods mentioned above
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actually inserts the ``vavpp`` video filter. If vpp is not actually
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supported with the libva backend in use, you can use this option to
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forcibly enable VO based deinterlacing.
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no
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Don't allow deinterlacing (default for newer libva).
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first-field
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Show only first field (going by ``--field-dominance``).
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bob
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bob deinterlacing (default for older libva).
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``--vo-vaapi-scaled-osd=<yes|no>``
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If enabled, then the OSD is rendered at video resolution and scaled to
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display resolution. By default, this is disabled, and the OSD is
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rendered at display resolution if the driver supports it.
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``null``
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Produces no video output. Useful for benchmarking.
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Usually, it's better to disable video with ``--no-video`` instead.
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The following global options are supported by this video output:
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``--vo-null-fps=<value>``
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Simulate display FPS. This artificially limits how many frames the
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VO accepts per second.
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``caca``
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Color ASCII art video output driver that works on a text console.
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.. note:: This driver is a joke.
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``tct``
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Color Unicode art video output driver that works on a text console.
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Depends on support of true color by modern terminals to display the images
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at full color range. On Windows it requires an ansi terminal such as mintty.
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``--vo-tct-algo=<algo>``
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Select how to write the pixels to the terminal.
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half-blocks
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Uses unicode LOWER HALF BLOCK character to achieve higher vertical
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resolution. (Default.)
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plain
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Uses spaces. Causes vertical resolution to drop twofolds, but in
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theory works in more places.
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``--vo-tct-width=<width>`` ``--vo-tct-height=<height>``
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Assume the terminal has the specified character width and/or height.
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These default to 80x25 if the terminal size cannot be determined.
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``--vo-tct-256=<yes|no>`` (default: no)
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Use 256 colors - for terminals which don't support true color.
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``image``
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Output each frame into an image file in the current directory. Each file
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takes the frame number padded with leading zeros as name.
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The following global options are supported by this video output:
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``--vo-image-format=<format>``
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Select the image file format.
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jpg
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JPEG files, extension .jpg. (Default.)
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jpeg
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JPEG files, extension .jpeg.
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png
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PNG files.
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``--vo-image-png-compression=<0-9>``
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PNG compression factor (speed vs. file size tradeoff) (default: 7)
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``--vo-image-png-filter=<0-5>``
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Filter applied prior to PNG compression (0 = none; 1 = sub; 2 = up;
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3 = average; 4 = Paeth; 5 = mixed) (default: 5)
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``--vo-image-jpeg-quality=<0-100>``
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JPEG quality factor (default: 90)
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``--vo-image-jpeg-progressive=<yes|no>``
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Specify standard or progressive JPEG (default: no).
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``--vo-image-jpeg-baseline=<yes|no>``
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Specify use of JPEG baseline or not (default: yes).
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``--vo-image-jpeg-optimize=<0-100>``
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JPEG optimization factor (default: 100)
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``--vo-image-jpeg-smooth=<0-100>``
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smooth factor (default: 0)
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``--vo-image-jpeg-dpi=<1->``
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JPEG DPI (default: 72)
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``--vo-image-outdir=<dirname>``
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Specify the directory to save the image files to (default: ``./``).
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``wayland`` (Wayland only)
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Wayland shared memory video output as fallback for ``opengl``.
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.. note:: This driver is for compatibility with systems that don't provide
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working OpenGL drivers.
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The following global options are supported by this video output:
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``--vo-wayland-alpha``
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Use a buffer format that supports videos and images with alpha
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information
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``--vo-wayland-rgb565``
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Use RGB565 as buffer format. This format is implemented on most
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platforms, especially on embedded where it is far more efficient then
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RGB8888.
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``--vo-wayland-triple-buffering``
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Use 3 buffers instead of 2. This can lead to more fluid playback, but
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uses more memory.
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``opengl-cb``
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For use with libmpv direct OpenGL embedding; useless in any other contexts.
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(See ``<mpv/opengl_cb.h>``.)
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This also supports many of the options the ``opengl`` VO has.
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``rpi`` (Raspberry Pi)
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Native video output on the Raspberry Pi using the MMAL API.
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This is deprecated. Use ``--vo=opengl`` instead, which is the default and
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provides the same functionality. The ``rpi`` VO will be removed in
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mpv 0.23.0. Its functionality was folded into --vo=opengl, which now uses
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RPI hardware decoding by treating it as a hardware overlay (without applying
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GL filtering). Also to be changed in 0.23.0: the --fs flag will be reset to
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"no" by default (like on the other platforms).
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The following deprecated global options are supported by this video output:
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``--rpi-display=<number>``
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Select the display number on which the video overlay should be shown
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(default: 0).
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``--rpi-layer=<number>``
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Select the dispmanx layer on which the video overlay should be shown
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(default: -10). Note that mpv will also use the 2 layers above the
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selected layer, to handle the window background and OSD. Actual video
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rendering will happen on the layer above the selected layer.
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``--rpi-background=<yes|no>``
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Whether to render a black background behind the video (default: no).
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Normally it's better to kill the console framebuffer instead, which
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gives better performance.
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``--rpi-osd=<yes|no>``
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Enabled by default. If disabled with ``no``, no OSD layer is created.
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This also means there will be no subtitles rendered.
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``drm`` (Direct Rendering Manager)
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Video output driver using Kernel Mode Setting / Direct Rendering Manager.
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Should be used when one doesn't want to install full-blown graphical
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environment (e.g. no X). Does not support hardware acceleration (if you
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need this, check the ``drm`` backend for ``opengl`` VO).
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The following global options are supported by this video output:
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``--drm-connector=[<gpu_number>.]<name>``
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Select the connector to use (usually this is a monitor.) If ``<name>``
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is empty or ``auto``, mpv renders the output on the first available
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connector. Use ``--drm-connector=help`` to get list of available
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connectors. When using multiple graphic cards, use the ``<gpu_number>``
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argument to disambiguate.
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(default: empty)
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``--drm-mode=<number>``
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Mode ID to use (resolution, bit depth and frame rate).
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(default: 0)
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