summaryrefslogtreecommitdiff
path: root/README.rst
blob: f6f179640779fe1e951a17d966d609743b890ab7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
.. vim: tw=120 sw=4 et

python-mpv
==========

python-mpv is a ctypes-based python interface to the mpv media player. It gives you more or less full control of all
features of the player, just as the lua interface does.

Installation
------------

.. code:: bash

    pip install python-mpv


...though you can also realistically just copy `mpv.py`_ into your project as it's all nicely contained in one file.

Requirements
~~~~~~~~~~~~

libmpv
......
``libmpv.so`` either locally (in your current working directory) or somewhere in your system library search path. This
module is somewhat lenient as far as ``libmpv`` versions are concerned but since ``libmpv`` is changing quite frequently
you'll only get all the newest features when using an up-to-date version of this module. The unit tests for this module
do some basic automatic version compatibility checks. If you discover anything missing here, please open an `issue`_ or
submit a `pull request`_ on github.

On Windows you can place libmpv anywhere in your ``%PATH%`` (e.g. next to ``python.exe``) or next to this module's
``mpv.py``.  Before falling back to looking in the mpv module's directory, python-mpv uses the DLL search order built
into ctypes, which is different to the one Windows uses internally. Consult `this stackoverflow post
<https://stackoverflow.com/a/23805306>`__ for details.

Python >= 3.5 (officially)
..........................
The ``master`` branch officially only supports recent python releases (3.5 onwards), but there is the somewhat outdated
but functional `py2compat branch`_ providing Python 2 compatibility.

.. _`py2compat branch`: https://github.com/jaseg/python-mpv/tree/py2compat
.. _`issue`: https://github.com/jaseg/python-mpv/issues
.. _`pull request`: https://github.com/jaseg/python-mpv/pulls

Supported Platforms
...................

**Linux**, **Windows** and **OSX** all seem to work mostly fine. For some notes on the installation on Windows see
`this comment`__. Shared library handling is quite bad on windows, so expect some pain there. On OSX there seems to be
some bug int the event logic. See `issue 36`_ and `issue 61`_ for details. Creating a pyQT window and having mpv draw
into it seems to be a workaround (about 10loc), but in case you want this fixed please weigh in on the issue tracker
since right now there is not many OSX users.

.. __: https://github.com/jaseg/python-mpv/issues/60#issuecomment-352719773
.. _`issue 61`: https://github.com/jaseg/python-mpv/issues/61
.. _`issue 36`: https://github.com/jaseg/python-mpv/issues/36

Usage
-----

.. code:: python

    import mpv
    player = mpv.MPV(ytdl=True)
    player.play('https://youtu.be/DOmdB7D-pUU')
    player.wait_for_playback()

python-mpv mostly exposes mpv's built-in API to python, adding only some porcelain on top. Most "`input commands <https://mpv.io/manual/master/#list-of-input-commands>`_" are mapped to methods of the MPV class. Check out these methods and their docstrings in `the source <https://github.com/jaseg/python-mpv/blob/master/mpv.py>`__ for things you can do. Additional controls and status information are exposed through `MPV properties <https://mpv.io/manual/master/#properties>`_. These can be accessed like ``player.metadata``, ``player.fullscreen`` and ``player.loop_playlist``.

Threading
~~~~~~~~~

The ``mpv`` module starts one thread for event handling, since MPV sends events that must be processed quickly. The
event queue has a fixed maxmimum size and some operations can cause a large number of events to be sent.

If you want to handle threading yourself, you can pass ``start_event_thread=False`` to the ``MPV`` constructor and
manually call the ``MPV`` object's ``_loop`` function. If you have some strong need to not use threads and use some
external event loop (such as asyncio) instead you can do that, too with some work. The API of the backend C ``libmpv``
has a function for producing a sort of event file descriptor for a handle. You can use that to produce a file descriptor
that can be passed to an event loop to tell it to wake up the python-mpv event handler on every incoming event.

All API functions are thread-safe. If one is not, please file an issue on github.

Advanced Usage
~~~~~~~~~~~~~~

Logging, Properties, Python Key Bindings, Screenshots and youtube-dl
....................................................................

.. code:: python

    #!/usr/bin/env python3
    import mpv

    def my_log(loglevel, component, message):
        print('[{}] {}: {}'.format(loglevel, component, message))

    player = mpv.MPV(log_handler=my_log, ytdl=True, input_default_bindings=True, input_vo_keyboard=True)

    # Property access, these can be changed at runtime
    @player.property_observer('time-pos')
    def time_observer(_name, value):
        # Here, _value is either None if nothing is playing or a float containing
        # fractional seconds since the beginning of the file.
        print('Now playing at {:.2f}s'.format(value))

    player.fullscreen = True
    player.loop_playlist = 'inf'
    # Option access, in general these require the core to reinitialize
    player['vo'] = 'gpu'

    @player.on_key_press('q')
    def my_q_binding():
        print('THERE IS NO ESCAPE')

    @player.on_key_press('s')
    def my_s_binding():
        pillow_img = player.screenshot_raw()
        pillow_img.save('screenshot.png')

    player.play('https://youtu.be/DLzxrzFCyOs')
    player.wait_for_playback()

    del player

Video overlays
..............

.. code:: python

    #!/usr/bin/env python3
    import time
    from PIL import Image, ImageDraw, ImageFont
    import mpv

    player = mpv.MPV()

    player.loop = True
    player.play('test.webm')
    player.wait_until_playing()

    font = ImageFont.truetype('DejaVuSans.ttf', 40)

    while not player.core_idle:

        time.sleep(0.5)
        overlay = player.create_image_overlay()

        for pos in range(0, 500, 5):
            ts = player.time_pos
            if ts is None:
                break

            img = Image.new('RGBA', (400, 150),  (255, 255, 255, 0))
            d = ImageDraw.Draw(img)
            d.text((10, 10), 'Hello World', font=font, fill=(0, 255, 255, 128))
            d.text((10, 60), f't={ts:.3f}', font=font, fill=(255, 0, 255, 255))

            overlay.update(img, pos=(2*pos, pos))
            time.sleep(0.05)

        overlay.remove()


Playlist handling
.................

.. code:: python

    #!/usr/bin/env python3
    import mpv

    player = mpv.MPV(ytdl=True, input_default_bindings=True, input_vo_keyboard=True)

    player.playlist_append('https://youtu.be/PHIGke6Yzh8')
    player.playlist_append('https://youtu.be/Ji9qSuQapFY')
    player.playlist_append('https://youtu.be/6f78_Tf4Tdk')

    player.playlist_pos = 0

    while True:
        # To modify the playlist, use player.playlist_{append,clear,move,remove}. player.playlist is read-only
        print(player.playlist)
        player.wait_for_playback()

Directly feeding mpv data from python
.....................................

.. code:: python

    #!/usr/bin/env python3
    import mpv

    player = mpv.MPV()
    @player.python_stream('foo')
    def reader():
        with open('test.webm', 'rb') as f:
            while True:
                yield f.read(1024*1024)

    player.play('python://foo')
    player.wait_for_playback()

Using external subtitles
........................

The easiest way to load custom subtitles from a file is to pass the ``--sub-file`` option to the ``loadfile`` call:

.. code:: python

    #!/usr/bin/env python3
    import mpv

    player = mpv.MPV()
    player.play('test.webm', sub_file='test.srt')

Note that you can also pass many other options to ``loadfile``. See the mpv docs for details.

If you want to add subtitle files or streams at runtime, you can use the ``sub-add`` command. ``sub-add`` can only be
called once the player is done loading the file and starts playing. An easy way to wait for this is to wait for the
``core-idle`` property.

.. code:: python

    #!/usr/bin/env python3
    import mpv

    player = mpv.MPV()
    player.play('test.webm')
    player.wait_until_playing()
    player.sub_add('test.srt')
    player.wait_for_playback()

Using MPV's built-in GUI
........................

python-mpv is using mpv via libmpv. libmpv is meant for embedding into other applications and by default disables most
GUI features such as the OSD or keyboard input. To enable the built-in GUI, use the following options when initializing
the MPV instance. See `Issue 102`_ for more details

.. _`issue 102`: https://github.com/jaseg/python-mpv/issues/61

.. code:: python

    # Enable the on-screen controller and keyboard shortcuts
    player = mpv.MPV(input_default_bindings=True, input_vo_keyboard=True, osc=True)

    # Alternative version using the old "floating box" style on-screen controller
    player = mpv.MPV(player_operation_mode='pseudo-gui',
                     script_opts='osc-layout=box,osc-seekbarstyle=bar,osc-deadzonesize=0,osc-minmousemove=3',
                     input_default_bindings=True,
                     input_vo_keyboard=True,
                     osc=True)

PyQT embedding
..............

.. code:: python
    
    #!/usr/bin/env python3
    import mpv
    import sys

    from PyQt5.QtWidgets import *
    from PyQt5.QtCore import *

    class Test(QMainWindow):
        def __init__(self, parent=None):
            super().__init__(parent)
            self.container = QWidget(self)
            self.setCentralWidget(self.container)
            self.container.setAttribute(Qt.WA_DontCreateNativeAncestors)
            self.container.setAttribute(Qt.WA_NativeWindow)
            player = mpv.MPV(wid=str(int(self.container.winId())),
                    vo='x11', # You may not need this
                    log_handler=print,
                    loglevel='debug')
            player.play('test.webm')

    app = QApplication(sys.argv)

    # This is necessary since PyQT stomps over the locale settings needed by libmpv.
    # This needs to happen after importing PyQT before creating the first mpv.MPV instance.
    import locale
    locale.setlocale(locale.LC_NUMERIC, 'C')
    win = Test()
    win.show()
    sys.exit(app.exec_())

PyGObject embedding
...................

.. code:: python
    
    #!/usr/bin/env python3
    import gi

    import mpv

    gi.require_version('Gtk', '3.0')
    from gi.repository import Gtk


    class MainClass(Gtk.Window):

        def __init__(self):
            super(MainClass, self).__init__()
            self.set_default_size(600, 400)
            self.connect("destroy", self.on_destroy)

            widget = Gtk.Frame()
            self.add(widget)
            self.show_all()

            # Must be created >after< the widget is shown, else property 'window' will be None
            self.mpv = mpv.MPV(wid=str(widget.get_property("window").get_xid()))
            self.mpv.play("test.webm")

        def on_destroy(self, widget, data=None):
            self.mpv.terminate()
            Gtk.main_quit()


    if __name__ == '__main__':
        application = MainClass()
        Gtk.main()

Using OpenGL from PyGObject via new render context API
......................................................

Just like it is possible to render into a GTK widget through X11 windows, it `also is possible to render into a GTK
widget using OpenGL <https://gist.github.com/jaseg/657e8ecca3267c0d82ec85d40f423caa>`__ through this python API.

Using OpenGL via legacy opengl_cb backend from PyQT
...................................................

Github user cosven_ has managed to `make mpv render into a Qt widget using OpenGL
<https://gist.github.com/cosven/b313de2acce1b7e15afda263779c0afc>`__ through this python API.

Using OpenGL via legacy opengl_cb backend from PyGObject
........................................................

Just like it is possible to render into a Qt widget, it `also is possible to render into a GTK widget
<https://gist.github.com/trin94/a930f2a13cee1c9fd21cab0393bf4663>`__ through this python API.

Using OpenGL from PyQt5/QML via new render context API
......................................................

Robozman_ has mangaed to `make mpv render into a PyQt5/QML widget using OpenGL
<https://gitlab.com/robozman/python-mpv-qml-example>`__ through this python API.

Coding Conventions
------------------

The general aim is `PEP 8`_, with liberal application of the "consistency" section. 120 cells line width. Four spaces.
No tabs. Probably don't bother making pure-formatting PRs except if you think it *really* helps readability or it
*really* irks you if you don't.

.. _`PEP 8`: https://www.python.org/dev/peps/pep-0008/
.. _`mpv.py`: https://raw.githubusercontent.com/jaseg/python-mpv/master/mpv.py
.. _cosven: https://github.com/cosven
.. _Robozman: https://gitlab.com/robozman