ffmpeg does not work/load

[pivtom]

Hi, trying to run my script that uses pyglet to play a video, and am getting errors about the avutil library.

Am on M1 Mac, Python 3.11.6 pyglet==2.0.14 ffmpeg==1.4 ffmpeg-python==0.2.0 python-ffmpeg==2.0.10

pyglet.media.have_ffmpeg() says False although latest ffmpeg installed and in path

And when trying to do this import, it gives the error below. Thanks for any help in advance! TP

from pyglet.media.codecs.ffmpeg import FFmpegDecoder

ImportError Traceback (most recent call last) Cell In[3], line 1 ----> 1 from pyglet.media.codecs.ffmpeg import FFmpegDecoder

File /Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/pyglet/media/codecs/ffmpeg.py:15 13 from .base import AudioData, SourceInfo, StaticSource 14 from .base import StreamingSource, VideoFormat, AudioFormat ---> 15 from .ffmpeg_lib import * 16 from ..exceptions import MediaFormatException 19 class FileInfo:

File /Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/pyglet/media/codecs/ffmpeg_lib/init.py:2 1 """FFmpeg wrapping""" ----> 2 from .libavcodec import 3 from .libavutil import 4 from .libavformat import *

File /Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/pyglet/media/codecs/ffmpeg_lib/libavcodec.py:11 9 from pyglet.util import debug_print 10 from . import compat ---> 11 from . import libavutil 13 _debug = debug_print('debug_media') 15 avcodec = pyglet.lib.load_library( 16 'avcodec', 17 win32=('avcodec-60', 'avcodec-59', 'avcodec-58'), 18 darwin=('avcodec.60', 'avcodec.59', 'avcodec.58') 19 )

File /Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/pyglet/media/codecs/ffmpeg_lib/libavutil.py:13 9 from . import compat 11 _debug = debug_print('debug_media') ---> 13 avutil = pyglet.lib.load_library( 14 'avutil', 15 win32=('avutil-58', 'avutil-57', 'avutil-56'), 16 darwin=('avutil.58', 'avutil.57', 'avutil.56') 17 ) 19 avutil.avutil_version.restype = c_int 20 compat.set_version('avutil', avutil.avutil_version() >> 16)

File /Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/pyglet/lib.py:135, in LibraryLoader.load_library(self, *names, **kwargs) 132 if _debug_lib: 133 print(f"Unexpected error loading library {name}: {str(o)}") --> 135 raise ImportError(f'Library "{names[0]}" not found.')

ImportError: Library "avutil" not found.

[Square789]

You might have followed https://ffmpeg.org//download.html to the unofficial mac builds, it's possible you installed a prerelease version (pseudo-7.x.x) whose set of libraries are too recent. Try installing ffmpeg 6.1.1, which should be the latest available ffmpeg release right now. That one includes avutil/avcodec etc. at versions supported by pyglet. And fwiw the python packages are all bindings that do not contain the ffmpeg libraries, so you may want to uninstall those again.

[pivtom]

Hi, thanks. No, I actually have ffmpeg 6.1.1. installed. I tried to install pyglet-1.5.28, there the problem with avutil does not occur. But when I reinstall the current version, either with pip3 or if I compile it, there is still the same issue.

when I want to do this:

from pyglet.media.codecs.ffmpeg import FFmpegDecoder

I get this:

File ~/Library/Python/3.11/lib/python/site-packages/pyglet-2.0.14-py3.11.egg/pyglet/media/codecs/ffmpeg.py:15
     13 from .base import AudioData, SourceInfo, StaticSource
     14 from .base import StreamingSource, VideoFormat, AudioFormat
---> 15 from .ffmpeg_lib import *
     16 from ..exceptions import MediaFormatException
     19 class FileInfo:

File ~/Library/Python/3.11/lib/python/site-packages/pyglet-2.0.14-py3.11.egg/pyglet/media/codecs/ffmpeg_lib/__init__.py:2
      1 """FFmpeg wrapping"""
----> 2 from .libavcodec import *
      3 from .libavutil import *
      4 from .libavformat import *

File ~/Library/Python/3.11/lib/python/site-packages/pyglet-2.0.14-py3.11.egg/pyglet/media/codecs/ffmpeg_lib/libavcodec.py:11
      9 from pyglet.util import debug_print
     10 from . import compat
---> 11 from . import libavutil
     13 _debug = debug_print('debug_media')
     15 avcodec = pyglet.lib.load_library(
     16     'avcodec',
     17     win32=('avcodec-60', 'avcodec-59', 'avcodec-58'),
     18     darwin=('avcodec.60', 'avcodec.59', 'avcodec.58')
     19 )

File ~/Library/Python/3.11/lib/python/site-packages/pyglet-2.0.14-py3.11.egg/pyglet/media/codecs/ffmpeg_lib/libavutil.py:13
      9 from . import compat
     11 _debug = debug_print('debug_media')
---> 13 avutil = pyglet.lib.load_library(
     14     'avutil',
     15     win32=('avutil-58', 'avutil-57', 'avutil-56'),
     16     darwin=('avutil.58', 'avutil.57', 'avutil.56')
     17 )
     19 avutil.avutil_version.restype = c_int
     20 compat.set_version('avutil', avutil.avutil_version() >> 16)

File ~/Library/Python/3.11/lib/python/site-packages/pyglet-2.0.14-py3.11.egg/pyglet/lib.py:135, in LibraryLoader.load_library(self, *names, **kwargs)
    132             if _debug_lib:
    133                 print(f"Unexpected error loading library {name}: {str(o)}")
--> 135 raise ImportError(f'Library "{names[0]}" not found.')

ImportError: Library "avutil" not found.

[caffeinepills]

ImportError is just an error saying it can't find your ffmpeg files. You should only be trying to import the decoder manually if pyglet.media.have_ffmpeg() is True. You need to ensure your ffmpegs dylib files are in the correct path and being found. If you still can't get it found by your system, you may have to specify the path. See more information here: https://pyglet.readthedocs.io/en/latest/programming_guide/media.html#ffmpeg-installation