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import av
import av.datasets
av.logging.set_level(av.logging.VERBOSE)
input_ = av.open(av.datasets.curated("pexels/time-lapse-video-of-night-sky-857195.mp4"))
output = av.open("remuxed.mkv", "w")
# Make an output stream using the input as a template. This copies the stream
# setup from one to the other.
in_stream = input_.streams.video[0]
out_stream = output.add_stream_from_template(in_stream)
for packet in input_.demux(in_stream):
print(packet)
# We need to skip the "flushing" packets that `demux` generates.
if packet.dts is None:
continue
# We need to assign the packet to the new stream.
packet.stream = out_stream
output.mux(packet)
input_.close()
output.close()
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