ffmpeg-python/ffmpeg/tests/test_ffmpeg.py at extra-examples2 · root-master/ffmpeg-python · GitHub

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from __future__ import unicode_literals

from builtins import bytes

from builtins import range

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_FILE1 = os.path.join(SAMPLE_DATA_DIR, 'in1.mp4')

TEST_OVERLAY_FILE = os.path.join(SAMPLE_DATA_DIR, 'overlay.png')

TEST_OUTPUT_FILE1 = os.path.join(SAMPLE_DATA_DIR, 'out1.mp4')

TEST_OUTPUT_FILE2 = os.path.join(SAMPLE_DATA_DIR, 'out2.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)

assert concat1 == concat2

assert concat1 != concat3

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_node_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.node) == "input(filename={!r}) <{}>".format('dummy.mp4', in_file.node.short_hash)

assert repr(trim1.node) == "trim(end_frame=20, start_frame=10) <{}>".format(trim1.node.short_hash)

assert repr(trim2.node) == "trim(end_frame=40, start_frame=30) <{}>".format(trim2.node.short_hash)

assert repr(trim3.node) == "trim(end_frame=60, start_frame=50) <{}>".format(trim3.node.short_hash)

assert repr(concatted.node) == "concat(n=3) <{}>".format(concatted.node.short_hash)

assert repr(output.node) == "output(filename={!r}) <{}>".format('dummy2.mp4', output.node.short_hash)

def test_stream_repr():

in_file = ffmpeg.input('dummy.mp4')

assert repr(in_file) == "input(filename={!r})[None] <{}>".format('dummy.mp4', in_file.node.short_hash)

split0 = in_file.filter_multi_output('split')[0]

assert repr(split0) == "split()[0] <{}>".format(split0.node.short_hash)

dummy_out = in_file.filter_multi_output('dummy')['out']

assert repr(dummy_out) == "dummy()[{!r}] <{}>".format(dummy_out.label, dummy_out.node.short_hash)

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():

split = (ffmpeg

.input(TEST_INPUT_FILE1)

.vflip()

.split()

)

split0 = split[0]

split1 = split[1]

overlay_file = ffmpeg.input(TEST_OVERLAY_FILE)

overlay_file = ffmpeg.crop(overlay_file, 10, 10, 158, 112)

return (ffmpeg

.concat(

split0.trim(start_frame=10, end_frame=20),

split1.trim(start_frame=30, end_frame=40),

)

.overlay(overlay_file.hflip())

.drawbox(50, 50, 120, 120, color='red', thickness=5)

.output(TEST_OUTPUT_FILE1)

.overwrite_output()

)

def test_get_args_complex_filter():

out = _get_complex_filter_example()

args = ffmpeg.get_args(out)

assert args == ['-i', TEST_INPUT_FILE1,

'-i', TEST_OVERLAY_FILE,

'-filter_complex',

'[0]vflip[s0];' \

'[s0]split=2[s1][s2];' \

'[s1]trim=end_frame=20:start_frame=10[s3];' \

'[s2]trim=end_frame=40:start_frame=30[s4];' \

'[s3][s4]concat=n=2[s5];' \

'[1]crop=158:112:10:10[s6];' \

'[s6]hflip[s7];' \

'[s5][s7]overlay=eof_action=repeat[s8];' \

'[s8]drawbox=50:50:120:120:red:t=5[s9]',

'-map', '[s9]', TEST_OUTPUT_FILE1,

'-y'

]

def _get_complex_filter_asplit_example():

split = (ffmpeg

.input(TEST_INPUT_FILE1)

.vflip()

.asplit()

)

split0 = split[0]

split1 = split[1]

return (ffmpeg

.concat(

split0.filter_("atrim", start=10, end=20),

split1.filter_("atrim", start=30, end=40),

)

.output(TEST_OUTPUT_FILE1)

.overwrite_output()

)

def test_filter_asplit():

out = _get_complex_filter_asplit_example()

args = out.get_args()

assert args == [

'-i',

TEST_INPUT_FILE1,

'-filter_complex',

'[0]vflip[s0];[s0]asplit=2[s1][s2];[s1]atrim=end=20:start=10[s3];[s2]atrim=end=40:start=30[s4];[s3]'

'[s4]concat=n=2[s5]',

'-map',

'[s5]',

TEST_OUTPUT_FILE1,

'-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', '[s0]', 'out']

match = re.match(r'\[0\]drawtext=font=a((.|\n)*)b:text=test\[s0\]', 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 list(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', '[s0]', 'out']

match = re.match(r'\[0\]drawtext=text=a((.|\n)*)b\[s0\]', 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 list(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_compile():

out_file = ffmpeg.input('dummy.mp4').output('dummy2.mp4')

assert out_file.compile() == ['ffmpeg', '-i', 'dummy.mp4', 'dummy2.mp4']

assert out_file.compile(cmd='ffmpeg.old') == ['ffmpeg.old', '-i', 'dummy.mp4', 'dummy2.mp4']

def test_run():

stream = _get_complex_filter_example()

ffmpeg.run(stream)

def test_run_multi_output():

in_ = ffmpeg.input(TEST_INPUT_FILE1)

out1 = in_.output(TEST_OUTPUT_FILE1)

out2 = in_.output(TEST_OUTPUT_FILE2)

ffmpeg.run([out1, out2], overwrite_output=True)

def test_run_dummy_cmd():

stream = _get_complex_filter_example()

ffmpeg.run(stream, cmd='true')

def test_run_dummy_cmd_list():

stream = _get_complex_filter_example()

ffmpeg.run(stream, cmd=['true', 'ignored'])

def test_run_failing_cmd():

stream = _get_complex_filter_example()

with pytest.raises(subprocess.CalledProcessError):

ffmpeg.run(stream, cmd='false')

def test_custom_filter():

stream = ffmpeg.input('dummy.mp4')

stream = ffmpeg.filter_(stream, 'custom_filter', 'a', 'b', kwarg1='c')

stream = ffmpeg.output(stream, 'dummy2.mp4')

assert stream.get_args() == [

'-i', 'dummy.mp4',

'-filter_complex', '[0]custom_filter=a:b:kwarg1=c[s0]',

'-map', '[s0]',

'dummy2.mp4'

]

def test_custom_filter_fluent():

stream = (ffmpeg

.input('dummy.mp4')

.filter_('custom_filter', 'a', 'b', kwarg1='c')

.output('dummy2.mp4')

)

assert stream.get_args() == [

'-i', 'dummy.mp4',

'-filter_complex', '[0]custom_filter=a:b:kwarg1=c[s0]',

'-map', '[s0]',

'dummy2.mp4'

]

def test_merge_outputs():

in_ = ffmpeg.input('in.mp4')

out1 = in_.output('out1.mp4')

out2 = in_.output('out2.mp4')

assert ffmpeg.merge_outputs(out1, out2).get_args() == [

'-i', 'in.mp4', 'out1.mp4', 'out2.mp4'

]

assert ffmpeg.get_args([out1, out2]) == [

'-i', 'in.mp4', 'out2.mp4', 'out1.mp4'

]

def test__input__start_time():

assert ffmpeg.input('in', ss=10.5).output('out').get_args() == ['-ss', '10.5', '-i', 'in', 'out']

assert ffmpeg.input('in', ss=0.0).output('out').get_args() == ['-ss', '0.0', '-i', 'in', 'out']

def test_multi_passthrough():

out1 = ffmpeg.input('in1.mp4').output('out1.mp4')

out2 = ffmpeg.input('in2.mp4').output('out2.mp4')

out = ffmpeg.merge_outputs(out1, out2)

assert ffmpeg.get_args(out) == [

'-i', 'in1.mp4',

'-i', 'in2.mp4',

'out1.mp4',

'-map', '[1]', # FIXME: this should not be here (see #23)

'out2.mp4'

]

assert ffmpeg.get_args([out1, out2]) == [

'-i', 'in2.mp4',

'-i', 'in1.mp4',

'out2.mp4',

'-map', '[1]', # FIXME: this should not be here (see #23)

'out1.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[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)

assert out_data == in_data[start_frame*frame_size:]

def test_ffprobe():

data = ffmpeg.probe(TEST_INPUT_FILE1)

assert set(data.keys()) == {'format', 'streams'}

assert data['format']['duration'] == '7.036000'

ffmpeg-python/ffmpeg/tests/test_ffmpeg.py at extra-examples2 · root-master/ffmpeg-python · GitHub

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