diff options
Diffstat (limited to 'DOCS')
| -rw-r--r-- | DOCS/man/options.rst | 26 |
1 files changed, 20 insertions, 6 deletions
diff --git a/DOCS/man/options.rst b/DOCS/man/options.rst index 399701115f..295b3c6d56 100644 --- a/DOCS/man/options.rst +++ b/DOCS/man/options.rst @@ -5183,18 +5183,29 @@ The following video options are currently all specific to ``--vo=gpu`` and ``--interpolation-threshold=<0..1,-1>`` Threshold below which frame ratio interpolation gets disabled (default: - ``0.0001``). This is calculated as ``abs(disphz/vfps - 1) < threshold``, + ``0.01``). This is calculated as ``abs(disphz/vfps - 1) < threshold``, where ``vfps`` is the speed-adjusted video FPS, and ``disphz`` the display refresh rate. (The speed-adjusted video FPS is roughly equal to the normal video FPS, but with slowdown and speedup applied. This matters if you use ``--video-sync=display-resample`` to make video run synchronously to the display FPS, or if you change the ``speed`` property.) - The default is intended to almost always enable interpolation if the - playback rate is even slightly different from the display refresh rate. But - note that if you use e.g. ``--video-sync=display-vdrop``, small deviations - in the rate can disable interpolation and introduce a discontinuity every - other minute. + The default is intended to enable interpolation in scenarios where + retiming with the ``--video-sync=display-*`` cannot adjust the speed of + the video sufficiently for smooth playback. For example if a video is + 60.00 FPS and your display refresh rate is 59.94 Hz, interpolation will + never be activated, since the mismatch is within 1% of the refresh + rate. The default also handles the scenario when mpv cannot determine the + container FPS, such as during certain live streams, and may dynamically + toggle interpolation on and off. In this scenario, the default would be to + not use interpolation but rather to allow ``--video-sync=display-*`` to + retime the video to match display refresh rate. See + ``--video-sync-max-video-change`` for more information about how mpv + will retime video. + + Also note that if you use e.g. ``--video-sync=display-vdrop``, small + deviations in the rate can disable interpolation and introduce a + discontinuity every other minute. Set this to ``-1`` to disable this logic. @@ -6581,6 +6592,9 @@ Miscellaneous multiple of the display FPS, as long as the speed change does not exceed the value set by ``--video-sync-max-video-change``. + See ``--interpolation-threshold`` for how this option affects + interpolation. + This is mostly for testing, and the option may be randomly changed in the future without notice. |