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Fix ffmpeg/tests/test_ffmpeg.py: test_pipe() (v2: recalculate PTS) #737

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Fix ffmpeg/tests/test_ffmpeg.py: test_pipe() (v2: recalculate PTS) #737

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25 changes: 21 additions & 4 deletions ffmpeg/tests/test_ffmpeg.py
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Original file line number Diff line number Diff line change
Expand Up @@ -688,8 +688,8 @@ def test_pipe():
width = 32
height = 32
frame_size = width * height * 3 # 3 bytes for rgb24
frame_count = 10
start_frame = 2
frame_count = 15
start_frame = 3

out = (
ffmpeg.input(
Expand All @@ -700,6 +700,7 @@ def test_pipe():
framerate=10,
)
.trim(start_frame=start_frame)
.setpts('N-{}+1'.format(start_frame))
.output('pipe:1', format='rawvideo')
)

Expand All @@ -716,9 +717,9 @@ def test_pipe():
'-i',
'pipe:0',
'-filter_complex',
'[0]trim=start_frame=2[s0]',
'[0]trim=start_frame={}[s0];[s0]setpts=N-{}+1[s1]'.format(start_frame, start_frame),
'-map',
'[s0]',
'[s1]',
'-f',
'rawvideo',
'pipe:1',
Expand All @@ -739,9 +740,25 @@ def test_pipe():
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 :]

return

if start_frame > 0 and len(out_data) < len (in_data):
# ffmpeg 4.x removes trimmed frames
assert len(out_data) == frame_size * (frame_count - start_frame)
assert out_data == in_data[start_frame * frame_size :]
else:
# ffmpeg 5.x duplicates trimmed frames
assert len(out_data) == len(in_data)

for fn in range(0, start_frame):
assert out_data[fn*frame_size] == in_data[start_frame * frame_size]

assert out_data[start_frame * frame_size :] == in_data[start_frame * frame_size :]


def test__probe():
data = ffmpeg.probe(TEST_INPUT_FILE1)
Expand Down