default thread type can cause hang(or deadlock?)

[RoggeOhta]

reproduction code:

import av
import av.logging

video_uri = "/path/to/video"
av.logging.restore_default_callback()

def test(thread_id: int):
    print(f"Thread {thread_id} started!")
    container = av.open(video_uri, timeout=(10, 10))
    try:
        video_stream = container.streams.video[0]
        # video_stream.thread_type = "AUTO"
        for frame in container.decode(video_stream):
            print(frame.time)
    finally:
        container.close()
    return f"Thread {thread_id} done!"

for i in range(100):
    test(1)

print("All done!")

Enabling video_stream.thread_type = "AUTO" resolves the issue, but the default thread type often causes a hang at a certain point.
Upon observation with py-spy, it was found that the program gets blocked at the line "for frame in container.decode(video_stream):".

[RoggeOhta]

vid.zip
Here is a video that can reproduce this phenomenon.

[RoggeOhta]

Is there any update?

[js19950276]

I have the same problem, anyone can help?

[quentin-dietz]

Same issue here, no matter the thread mode. Downgraded to pyav 11.4.1 and everything works now (a newer version may work didn't test different ones)

[js19950276]

It works. Thanks Bro