mirror of
https://github.com/kkroening/ffmpeg-python.git
synced 2025-04-06 04:15:44 +08:00
287 lines
8.9 KiB
Python
287 lines
8.9 KiB
Python
from __future__ import unicode_literals
|
|
|
|
import ffmpeg
|
|
import os
|
|
import pytest
|
|
import random
|
|
import re
|
|
import subprocess
|
|
|
|
|
|
TEST_DIR = os.path.dirname(__file__)
|
|
SAMPLE_DATA_DIR = os.path.join(TEST_DIR, 'sample_data')
|
|
TEST_INPUT_FILE = os.path.join(SAMPLE_DATA_DIR, 'dummy.mp4')
|
|
TEST_OVERLAY_FILE = os.path.join(SAMPLE_DATA_DIR, 'overlay.png')
|
|
TEST_OUTPUT_FILE = os.path.join(SAMPLE_DATA_DIR, 'dummy2.mp4')
|
|
|
|
|
|
subprocess.check_call(['ffmpeg', '-version'])
|
|
|
|
|
|
def test_escape_chars():
|
|
assert ffmpeg._utils.escape_chars('a:b', ':') == 'a\:b'
|
|
assert ffmpeg._utils.escape_chars('a\\:b', ':\\') == 'a\\\\\\:b'
|
|
assert ffmpeg._utils.escape_chars('a:b,c[d]e%{}f\'g\'h\\i', '\\\':,[]%') == 'a\\:b\\,c\\[d\\]e\\%{}f\\\'g\\\'h\\\\i'
|
|
assert ffmpeg._utils.escape_chars(123, ':\\') == '123'
|
|
|
|
|
|
def test_fluent_equality():
|
|
base1 = ffmpeg.input('dummy1.mp4')
|
|
base2 = ffmpeg.input('dummy1.mp4')
|
|
base3 = ffmpeg.input('dummy2.mp4')
|
|
t1 = base1.trim(start_frame=10, end_frame=20)
|
|
t2 = base1.trim(start_frame=10, end_frame=20)
|
|
t3 = base1.trim(start_frame=10, end_frame=30)
|
|
t4 = base2.trim(start_frame=10, end_frame=20)
|
|
t5 = base3.trim(start_frame=10, end_frame=20)
|
|
assert t1 == t2
|
|
assert t1 != t3
|
|
assert t1 == t4
|
|
assert t1 != t5
|
|
|
|
|
|
def test_fluent_concat():
|
|
base = ffmpeg.input('dummy.mp4')
|
|
trimmed1 = base.trim(start_frame=10, end_frame=20)
|
|
trimmed2 = base.trim(start_frame=30, end_frame=40)
|
|
trimmed3 = base.trim(start_frame=50, end_frame=60)
|
|
concat1 = ffmpeg.concat(trimmed1, trimmed2, trimmed3)
|
|
concat2 = ffmpeg.concat(trimmed1, trimmed2, trimmed3)
|
|
concat3 = ffmpeg.concat(trimmed1, trimmed3, trimmed2)
|
|
concat4 = ffmpeg.concat()
|
|
concat5 = ffmpeg.concat()
|
|
assert concat1 == concat2
|
|
assert concat1 != concat3
|
|
assert concat4 == concat5
|
|
|
|
|
|
def test_fluent_output():
|
|
(ffmpeg
|
|
.input('dummy.mp4')
|
|
.trim(start_frame=10, end_frame=20)
|
|
.output('dummy2.mp4')
|
|
)
|
|
|
|
|
|
def test_fluent_complex_filter():
|
|
in_file = ffmpeg.input('dummy.mp4')
|
|
return (ffmpeg
|
|
.concat(
|
|
in_file.trim(start_frame=10, end_frame=20),
|
|
in_file.trim(start_frame=30, end_frame=40),
|
|
in_file.trim(start_frame=50, end_frame=60)
|
|
)
|
|
.output('dummy2.mp4')
|
|
)
|
|
|
|
|
|
def test_repr():
|
|
in_file = ffmpeg.input('dummy.mp4')
|
|
trim1 = ffmpeg.trim(in_file, start_frame=10, end_frame=20)
|
|
trim2 = ffmpeg.trim(in_file, start_frame=30, end_frame=40)
|
|
trim3 = ffmpeg.trim(in_file, start_frame=50, end_frame=60)
|
|
concatted = ffmpeg.concat(trim1, trim2, trim3)
|
|
output = ffmpeg.output(concatted, 'dummy2.mp4')
|
|
assert repr(in_file) == "input(filename={!r})".format('dummy.mp4')
|
|
assert repr(trim1) == "trim(end_frame=20,start_frame=10)"
|
|
assert repr(trim2) == "trim(end_frame=40,start_frame=30)"
|
|
assert repr(trim3) == "trim(end_frame=60,start_frame=50)"
|
|
assert repr(concatted) == "concat(n=3)"
|
|
assert repr(output) == "output(filename={!r})".format('dummy2.mp4')
|
|
|
|
|
|
def test_get_args_simple():
|
|
out_file = ffmpeg.input('dummy.mp4').output('dummy2.mp4')
|
|
assert out_file.get_args() == ['-i', 'dummy.mp4', 'dummy2.mp4']
|
|
|
|
|
|
def _get_complex_filter_example():
|
|
in_file = ffmpeg.input(TEST_INPUT_FILE)
|
|
overlay_file = ffmpeg.input(TEST_OVERLAY_FILE)
|
|
return (ffmpeg
|
|
.concat(
|
|
in_file.trim(start_frame=10, end_frame=20),
|
|
in_file.trim(start_frame=30, end_frame=40),
|
|
)
|
|
.overlay(overlay_file.hflip())
|
|
.drawbox(50, 50, 120, 120, color='red', thickness=5)
|
|
.output(TEST_OUTPUT_FILE)
|
|
.overwrite_output()
|
|
)
|
|
|
|
|
|
def test_get_args_complex_filter():
|
|
out = _get_complex_filter_example()
|
|
args = ffmpeg.get_args(out)
|
|
assert args == [
|
|
'-i', TEST_INPUT_FILE,
|
|
'-i', TEST_OVERLAY_FILE,
|
|
'-filter_complex',
|
|
'[0]trim=end_frame=20:start_frame=10[v0];' \
|
|
'[0]trim=end_frame=40:start_frame=30[v1];' \
|
|
'[v0][v1]concat=n=2[v2];' \
|
|
'[1]hflip[v3];' \
|
|
'[v2][v3]overlay=eof_action=repeat[v4];' \
|
|
'[v4]drawbox=50:50:120:120:red:t=5[v5]',
|
|
'-map', '[v5]', os.path.join(SAMPLE_DATA_DIR, 'dummy2.mp4'),
|
|
'-y'
|
|
]
|
|
|
|
|
|
def test_filter_normal_arg_escape():
|
|
"""Test string escaping of normal filter args (e.g. ``font`` param of ``drawtext`` filter)."""
|
|
def _get_drawtext_font_repr(font):
|
|
"""Build a command-line arg using drawtext ``font`` param and extract the ``-filter_complex`` arg."""
|
|
args = (ffmpeg
|
|
.input('in')
|
|
.drawtext('test', font='a{}b'.format(font))
|
|
.output('out')
|
|
.get_args()
|
|
)
|
|
assert args[:3] == ['-i', 'in', '-filter_complex']
|
|
assert args[4:] == ['-map', '[v0]', 'out']
|
|
match = re.match(r'\[0\]drawtext=font=a((.|\n)*)b:text=test\[v0\]', args[3], re.MULTILINE)
|
|
assert match is not None, 'Invalid -filter_complex arg: {!r}'.format(args[3])
|
|
return match.group(1)
|
|
|
|
expected_backslash_counts = {
|
|
'x': 0,
|
|
'\'': 3,
|
|
'\\': 3,
|
|
'%': 0,
|
|
':': 2,
|
|
',': 1,
|
|
'[': 1,
|
|
']': 1,
|
|
'=': 2,
|
|
'\n': 0,
|
|
}
|
|
for ch, expected_backslash_count in expected_backslash_counts.items():
|
|
expected = '{}{}'.format('\\' * expected_backslash_count, ch)
|
|
actual = _get_drawtext_font_repr(ch)
|
|
assert expected == actual
|
|
|
|
|
|
def test_filter_text_arg_str_escape():
|
|
"""Test string escaping of normal filter args (e.g. ``text`` param of ``drawtext`` filter)."""
|
|
def _get_drawtext_text_repr(text):
|
|
"""Build a command-line arg using drawtext ``text`` param and extract the ``-filter_complex`` arg."""
|
|
args = (ffmpeg
|
|
.input('in')
|
|
.drawtext('a{}b'.format(text))
|
|
.output('out')
|
|
.get_args()
|
|
)
|
|
assert args[:3] == ['-i', 'in', '-filter_complex']
|
|
assert args[4:] == ['-map', '[v0]', 'out']
|
|
match = re.match(r'\[0\]drawtext=text=a((.|\n)*)b\[v0\]', args[3], re.MULTILINE)
|
|
assert match is not None, 'Invalid -filter_complex arg: {!r}'.format(args[3])
|
|
return match.group(1)
|
|
|
|
expected_backslash_counts = {
|
|
'x': 0,
|
|
'\'': 7,
|
|
'\\': 7,
|
|
'%': 4,
|
|
':': 2,
|
|
',': 1,
|
|
'[': 1,
|
|
']': 1,
|
|
'=': 2,
|
|
'\n': 0,
|
|
}
|
|
for ch, expected_backslash_count in expected_backslash_counts.items():
|
|
expected = '{}{}'.format('\\' * expected_backslash_count, ch)
|
|
actual = _get_drawtext_text_repr(ch)
|
|
assert expected == actual
|
|
|
|
|
|
#def test_version():
|
|
# subprocess.check_call(['ffmpeg', '-version'])
|
|
|
|
|
|
def test_run():
|
|
node = _get_complex_filter_example()
|
|
ffmpeg.run(node)
|
|
|
|
|
|
def test_run_dummy_cmd():
|
|
node = _get_complex_filter_example()
|
|
ffmpeg.run(node, cmd='true')
|
|
|
|
|
|
def test_run_dummy_cmd_list():
|
|
node = _get_complex_filter_example()
|
|
ffmpeg.run(node, cmd=['true', 'ignored'])
|
|
|
|
|
|
def test_run_failing_cmd():
|
|
node = _get_complex_filter_example()
|
|
with pytest.raises(subprocess.CalledProcessError):
|
|
ffmpeg.run(node, cmd='false')
|
|
|
|
|
|
def test_custom_filter():
|
|
node = ffmpeg.input('dummy.mp4')
|
|
node = ffmpeg.filter_(node, 'custom_filter', 'a', 'b', kwarg1='c')
|
|
node = ffmpeg.output(node, 'dummy2.mp4')
|
|
assert node.get_args() == [
|
|
'-i', 'dummy.mp4',
|
|
'-filter_complex', '[0]custom_filter=a:b:kwarg1=c[v0]',
|
|
'-map', '[v0]',
|
|
'dummy2.mp4'
|
|
]
|
|
|
|
|
|
def test_custom_filter_fluent():
|
|
node = (ffmpeg
|
|
.input('dummy.mp4')
|
|
.filter_('custom_filter', 'a', 'b', kwarg1='c')
|
|
.output('dummy2.mp4')
|
|
)
|
|
assert node.get_args() == [
|
|
'-i', 'dummy.mp4',
|
|
'-filter_complex', '[0]custom_filter=a:b:kwarg1=c[v0]',
|
|
'-map', '[v0]',
|
|
'dummy2.mp4'
|
|
]
|
|
|
|
|
|
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[v0]',
|
|
'-map', '[v0]',
|
|
'-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)
|
|
assert out_data == in_data[start_frame*frame_size:]
|