==> Starting build()... running build running build_py creating build creating build/lib creating build/lib/ffmpeg copying ffmpeg/_view.py -> build/lib/ffmpeg copying ffmpeg/_filters.py -> build/lib/ffmpeg copying ffmpeg/_probe.py -> build/lib/ffmpeg copying ffmpeg/_utils.py -> build/lib/ffmpeg copying ffmpeg/dag.py -> build/lib/ffmpeg copying ffmpeg/_run.py -> build/lib/ffmpeg copying ffmpeg/_ffmpeg.py -> build/lib/ffmpeg copying ffmpeg/__init__.py -> build/lib/ffmpeg copying ffmpeg/nodes.py -> build/lib/ffmpeg ==> Starting check()... =========================================================================== test session starts =========================================================================== platform linux -- Python 3.10.2, pytest-6.2.5, py-1.11.0, pluggy-0.13.1 rootdir: /home/chibo/.cache/yay/python-ffmpeg/src/ffmpeg-python-0.2.0, configfile: pytest.ini, testpaths: ffmpeg/tests plugins: mock-3.7.0 collected 60 items ffmpeg/tests/test_ffmpeg.py .....................................................F...... [100%] ================================================================================ FAILURES ================================================================================= ________________________________________________________________________________ test_pipe ________________________________________________________________________________ def test_pipe(): width = 32 height = 32 frame_size = width * height * 3 # 3 bytes for rgb24 frame_count = 10 start_frame = 2 out = ( ffmpeg.input( 'pipe:0', format='rawvideo', pixel_format='rgb24', video_size=(width, height), framerate=10, ) .trim(start_frame=start_frame) .output('pipe:1', format='rawvideo') ) args = out.get_args() assert args == [ '-f', 'rawvideo', '-video_size', '{}x{}'.format(width, height), '-framerate', '10', '-pixel_format', 'rgb24', '-i', 'pipe:0', '-filter_complex', '[0]trim=start_frame=2[s0]', '-map', '[s0]', '-f', 'rawvideo', 'pipe:1', ] cmd = ['ffmpeg'] + args p = subprocess.Popen( cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE ) in_data = bytes( bytearray([random.randint(0, 255) for _ in range(frame_size * frame_count)]) ) p.stdin.write(in_data) # note: this could block, in which case need to use threads p.stdin.close() out_data = p.stdout.read() > assert len(out_data) == frame_size * (frame_count - start_frame) E AssertionError: assert 30720 == (3072 * (10 - 2)) E + where 30720 = len(b'\xe1\xb7\xc8hT\x7fN\x87\xfe\xf7\xda\x16\x14\x1b26H\xb6\xc2\xddm\x00\xac\xbeRa\x98\x9c(\x05\n\xddl\xec0\xbc+}\x0bv\t\...9\xe2\xc8L\x829\xd5\xa4-w\\\xb6l\x88`\xa3is\xa1\x91\x97~\xb4\x85\xee\xc9F\xdb\xba\xe2\t\xd0\x85$\xfc\x16\xe6\xb9\x97eG') ffmpeg/tests/test_ffmpeg.py:699: AssertionError ============================================================================ warnings summary ============================================================================= ../../../../../../../usr/lib/python3.10/site-packages/past/builtins/misc.py:45 /usr/lib/python3.10/site-packages/past/builtins/misc.py:45: DeprecationWarning: the imp module is deprecated in favour of importlib and slated for removal in Python 3.12; see the module's documentation for alternative uses from imp import reload  ffmpeg/tests/test_ffmpeg.py:31 /home/chibo/.cache/yay/python-ffmpeg/src/ffmpeg-python-0.2.0/ffmpeg/tests/test_ffmpeg.py:31: DeprecationWarning: invalid escape sequence '\:' assert ffmpeg._utils.escape_chars('a:b', ':') == 'a\:b'  ffmpeg/tests/test_ffmpeg.py::test__get_filter_complex_input ffmpeg/tests/test_ffmpeg.py::test__multi_output_edge_label_order /home/chibo/.cache/yay/python-ffmpeg/src/ffmpeg-python-0.2.0/ffmpeg/tests/test_ffmpeg.py:722: FutureWarning: Possible nested set at position 20 m = re.search(r'\[([^]]+)\]{}(?=[[;]|$)'.format(name), flt)  -- Docs: https://docs.pytest.org/en/stable/warnings.html ========================================================================= short test summary info ========================================================================= FAILED ffmpeg/tests/test_ffmpeg.py::test_pipe - AssertionError: assert 30720 == (3072 * (10 - 2)) ================================================================ 1 failed, 59 passed, 4 warnings in 0.59s ================================================================= ==> ERROR: A failure occurred in check(). Aborting... -> error making: python-ffmpeg