mirror of https://github.com/mpv-player/mpv
222 lines
6.0 KiB
ReStructuredText
222 lines
6.0 KiB
ReStructuredText
STATS
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=====
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This builtin script displays information and statistics for the currently
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played file. It is enabled by default if mpv was compiled with Lua support.
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It can be disabled entirely using the ``--load-stats-overlay=no`` option.
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Usage
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-----
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The following key bindings are active by default unless something else is
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already bound to them:
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==== ==============================================
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i Show stats for a fixed duration
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I Toggle stats (shown until toggled again)
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==== ==============================================
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While the stats are visible on screen the following key bindings are active,
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regardless of existing bindings. They allow you to switch between *pages* of
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stats:
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==== ==================
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1 Show usual stats
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2 Show frame timings (scroll)
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3 Input cache stats
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4 Internal stuff (scroll)
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==== ==================
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On pages which support scroll, these key bindings are also active:
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==== ==================
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UP Scroll one line up
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DOWN Scroll one line down
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==== ==================
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Font
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~~~~
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For optimal visual experience, a font with support for many font weights and
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monospaced digits is recommended. By default, the open source font
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`Source Sans Pro <https://github.com/adobe-fonts/source-sans-pro>`_ is used.
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Configuration
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-------------
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This script can be customized through a config file ``script-opts/stats.conf``
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placed in mpv's user directory and through the ``--script-opts`` command-line
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option. The configuration syntax is described in `ON SCREEN CONTROLLER`_.
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Configurable Options
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~~~~~~~~~~~~~~~~~~~~
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``key_oneshot``
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Default: i
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``key_toggle``
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Default: I
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Key bindings to display stats.
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``key_page_1``
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Default: 1
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``key_page_2``
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Default: 2
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``key_page_3``
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Default: 3
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``key_page_4``
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Default: 4
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Key bindings for page switching while stats are displayed.
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``key_scroll_up``
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Default: UP
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``key_scroll_down``
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Default: DOWN
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``scroll_lines``
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Default: 1
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Scroll key bindings and number of lines to scroll on pages which support it.
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``duration``
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Default: 4
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How long the stats are shown in seconds (oneshot).
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``redraw_delay``
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Default: 1
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How long it takes to refresh the displayed stats in seconds (toggling).
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``persistent_overlay``
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Default: no
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When `no`, other scripts printing text to the screen can overwrite the
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displayed stats. When `yes`, displayed stats are persistently shown for the
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respective duration. This can result in overlapping text when multiple
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scripts decide to print text at the same time.
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``plot_perfdata``
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Default: yes
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Show graphs for performance data (page 2).
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``plot_vsync_ratio``
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Default: yes
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``plot_vsync_jitter``
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Default: yes
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Show graphs for vsync and jitter values (page 1). Only when toggled.
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``flush_graph_data``
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Default: yes
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Clear data buffers used for drawing graphs when toggling.
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``font``
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Default: Source Sans Pro
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Font name. Should support as many font weights as possible for optimal
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visual experience.
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``font_mono``
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Default: Source Sans Pro
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Font name for parts where monospaced characters are necessary to align
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text. Currently, monospaced digits are sufficient.
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``font_size``
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Default: 8
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Font size used to render text.
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``font_color``
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Default: FFFFFF
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Font color.
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``border_size``
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Default: 0.8
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Size of border drawn around the font.
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``border_color``
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Default: 262626
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Color of drawn border.
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``alpha``
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Default: 11
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Transparency for drawn text.
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``plot_bg_border_color``
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Default: 0000FF
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Border color used for drawing graphs.
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``plot_bg_color``
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Default: 262626
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Background color used for drawing graphs.
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``plot_color``
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Default: FFFFFF
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Color used for drawing graphs.
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Note: colors are given as hexadecimal values and use ASS tag order: BBGGRR
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(blue green red).
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Different key bindings
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~~~~~~~~~~~~~~~~~~~~~~
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A different key binding can be defined with the aforementioned options
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``key_oneshot`` and ``key_toggle`` but also with commands in ``input.conf``,
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for example::
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e script-binding stats/display-stats
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E script-binding stats/display-stats-toggle
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Using ``input.conf``, it is also possible to directly display a certain page::
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i script-binding stats/display-page-1
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e script-binding stats/display-page-2
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Internal stuff page
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~~~~~~~~~~~~~~~~~~~
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Most entries shown on this page have rather vague meaning. Likely none of this
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is useful for you. Don't attempt to use it. Forget its existence.
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Selecting this for the first time will start collecting some internal
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performance data. That means performance will be slightly lower than normal for
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the rest of the time the player is running (even if the stats page is closed).
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Note that the stats page itself uses a lot of CPU and even GPU resources, and
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may have a heavy impact on performance.
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The displayed information is accumulated over the redraw delay (shown as
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``poll-time`` field).
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This adds entries for each Lua script. If there are too many scripts running,
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parts of the list will simply be out of the screen, but it can be scrolled.
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If the underlying platform does not support pthread per thread times, the
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displayed times will be 0 or something random (I suspect that at time of this
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writing, only Linux provides the correct via pthread APIs for per thread times).
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Most entries are added lazily and only during data collection, which is why
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entries may pop up randomly after some time. It's also why the memory usage
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entries for scripts that have been inactive since the start of data collection
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are missing.
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Memory usage is approximate and does not reflect internal fragmentation.
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JS scripts memory reporting is disabled by default because collecting the data
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at the JS side has an overhead. It can be enabled by exporting the env var
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``MPV_LEAK_REPORT=1`` before starting mpv, and will increase JS memory usage.
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If entries have ``/time`` and ``/cpu`` variants, the former gives the real time
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(monotonic clock), while the latter the thread CPU time (only if the
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corresponding pthread API works and is supported).
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