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import os
from fractions import Fraction
import pytest
import av
from .common import fate_suite
class TestStreams:
@pytest.fixture(autouse=True)
def cleanup(self):
yield
for file in ("data.ts", "out.mkv"):
if os.path.exists(file):
os.remove(file)
def test_stream_tuples(self) -> None:
for fate_name in ("h264/interlaced_crop.mp4",):
container = av.open(fate_suite(fate_name))
video_streams = tuple([s for s in container.streams if s.type == "video"])
assert video_streams == container.streams.video
audio_streams = tuple([s for s in container.streams if s.type == "audio"])
assert audio_streams == container.streams.audio
def test_loudnorm(self) -> None:
container = av.open(
fate_suite("amv/MTV_high_res_320x240_sample_Penguin_Joke_MTV_from_WMV.amv")
)
audio = container.streams.audio[0]
stats = av.filter.loudnorm.stats("i=-24.0:lra=7.0:tp=-2.0", audio)
assert isinstance(stats, bytes) and len(stats) > 30
assert b"inf" not in stats
assert b'"input_i"' in stats
def test_selection(self) -> None:
container = av.open(
fate_suite("amv/MTV_high_res_320x240_sample_Penguin_Joke_MTV_from_WMV.amv")
)
video = container.streams.video[0]
video.thread_type = av.codec.context.ThreadType.AUTO
assert video.thread_type == av.codec.context.ThreadType.AUTO
video.thread_type = 0x03
assert video.thread_type == av.codec.context.ThreadType.AUTO
video.thread_type = "AUTO"
assert video.thread_type == av.codec.context.ThreadType.AUTO
audio = container.streams.audio[0]
assert [video] == container.streams.get(video=0)
assert [video] == container.streams.get(video=(0,))
assert video == container.streams.best("video")
assert audio == container.streams.best("audio")
container = av.open(fate_suite("sub/MovText_capability_tester.mp4"))
subtitle = container.streams.subtitles[0]
assert subtitle == container.streams.best("subtitle")
container = av.open(fate_suite("mxf/track_01_v02.mxf"))
data = container.streams.data[0]
assert data == container.streams.best("data")
def test_printing_video_stream(self) -> None:
input_ = av.open(
fate_suite("amv/MTV_high_res_320x240_sample_Penguin_Joke_MTV_from_WMV.amv")
)
container = av.open("out.mkv", "w")
video_stream = container.add_stream("h264", rate=30)
encoder = video_stream.codec.name
video_stream.width = input_.streams.video[0].width
video_stream.height = input_.streams.video[0].height
video_stream.pix_fmt = "yuv420p"
for frame in input_.decode(video=0):
container.mux(video_stream.encode(frame))
break
repr = f"{video_stream}"
assert repr.startswith(f"<av.VideoStream #0 {encoder}, yuv420p 160x120 at ")
assert repr.endswith(">")
container.close()
input_.close()
def test_printing_video_stream2(self) -> None:
input_ = av.open(fate_suite("h264/interlaced_crop.mp4"))
input_stream = input_.streams.video[0]
container = av.open("out.mkv", "w")
video_stream = container.add_stream_from_template(input_stream)
encoder = video_stream.codec.name
for frame in input_.decode(video=0):
container.mux(video_stream.encode(frame))
break
repr = f"{video_stream}"
assert repr.startswith(f"<av.VideoStream #0 {encoder}, yuv420p 640x360 at ")
assert repr.endswith(">")
container.close()
input_.close()
def test_data_stream(self) -> None:
# First test writing and reading a simple data stream
container1 = av.open("data.ts", "w")
data_stream = container1.add_data_stream()
test_data = [b"test data 1", b"test data 2", b"test data 3"]
for i, data_ in enumerate(test_data):
packet = av.Packet(data_)
packet.pts = i
packet.stream = data_stream
container1.mux(packet)
container1.close()
# Test reading back the data stream
container = av.open("data.ts")
# Test best stream selection
data = container.streams.best("data")
assert data == container.streams.data[0]
# Test get method
assert [data] == container.streams.get(data=0)
assert [data] == container.streams.get(data=(0,))
# Verify we can read back all the packets, ignoring empty ones
packets = [p for p in container.demux(data) if bytes(p)]
assert len(packets) == len(test_data)
for packet, original_data in zip(packets, test_data):
assert bytes(packet) == original_data
# Test string representation
repr = f"{data_stream}"
assert repr.startswith("<av.DataStream #0") and repr.endswith(">")
container.close()
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