All output files have an .mp4.lock extension

[sdesmedt123]

Everything runs fine but when checking the output folder all of the files are 0kb and have an .mp4.lock extension.

This is what the terminal shows me:

Scanning Panopto:
Found 5 videos for "Ringvorlesung"

--------------------

Starting downloads:
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/multiprocessing/spawn.py", line 122, in spawn_main
Traceback (most recent call last):
Traceback (most recent call last):
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "<string>", line 1, in <module>
  File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/multiprocessing/spawn.py", line 122, in spawn_main
  File "<string>", line 1, in <module>
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/multiprocessing/spawn.py", line 122, in spawn_main
  File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/multiprocessing/spawn.py", line 122, in spawn_main
  File "<string>", line 1, in <module>
  File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/multiprocessing/spawn.py", line 122, in spawn_main
    exitcode = _main(fd, parent_sentinel)
    exitcode = _main(fd, parent_sentinel)
    exitcode = _main(fd, parent_sentinel)
    exitcode = _main(fd, parent_sentinel)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/multiprocessing/spawn.py", line 132, in _main
               ^^^^^^^^^^^^^^^^^^^^^^^^^^
               ^^^^^^^^^^^^^^^^^^^^^^^^^^
    exitcode = _main(fd, parent_sentinel)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/multiprocessing/spawn.py", line 132, in _main
  File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/multiprocessing/spawn.py", line 132, in _main
  File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/multiprocessing/spawn.py", line 132, in _main
               ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/multiprocessing/spawn.py", line 132,    self = reduction.pickle.load(from_parent)
 in _main
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/multiprocessing/synchronize.py", line 115, in __setstate__
    self = reduction.pickle.load(from_parent)
    self = reduction.pickle.load(from_parent)
    self = reduction.pickle.load(from_parent)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/multiprocessing/synchronize.py", line 115, in __setstate__
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/multiprocessing/synchronize.py", line 115, in __setstate__
  File "/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/multiprocessing/synchronize.py", line 115, in __setstate__
    self = reduction.pickle.load(from_parent)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File     self._semlock = _multiprocessing.SemLock._rebuild(*state)
    self._semlock = _multiprocessing.SemLock._rebuild(*state)
    self._semlock = _multiprocessing.SemLock._rebuild(*state)
    self._semlock = _multiprocessing.SemLock._rebuild(*state)
"/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/multiprocessing/synchronize.py", line 115, in __setstate__
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
FileNotFoundError: [Errno 2] No such file or directory
FileNotFoundError: [Errno 2] No such file or directory
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
FileNotFoundError: [Errno 2] No such file or directory
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
FileNotFoundError: [Errno 2] No such file or directory
    self._semlock = _multiprocessing.SemLock._rebuild(*state)
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
FileNotFoundError: [Errno 2] No such file or directory

[dakennguyen]

I have the same problem. My current workaround is to remove Process/Semaphore usage in file src/downloader.py

[sdesmedt123]

Thanks! The errors in the terminal are gone but I still end up with all .mp4.lock files. According to the terminal the downloads are being started but then the script just stops running:

Scanning Panopto:
Found 5 videos for "Ringvorlesung"

--------------------

Starting downloads:

[dakennguyen]

@sdesmedt123 there may be a good chance that it is downloading because one video could be around 500 MB. In the meantime, the lock files are generated.

You can try again by deleting 1 lock file out of 5, then rerun the command. That way we can try to download 1 video only instead of 5.

[Valentin-Metz]

I've provided a Docker container that should make the process more reproducible. This seems to be a problem with your python setup. You should be able to simply run the Docker container now and it'll take care of everything. Please report back if the problem persists.