'FFmpegSource' object has no attribute '_packet'

[vishal]

Following is exception I am getting on RPI3b+ machine with rasbian os, few detail to reproduce :-

ffmpeg version N-51541-gd89f69e142-static ​https://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2020 the FFmpeg developers

Os :- Raspbian GNU/Linux 9 \n \l

Python 2.7.13

tool using : pyglet

sample code :-

import pyglet
vidPath = '/var/tmp/output.mp4'
window = pyglet.window.Window(resizable=True)
window.set_size(1280, 720)
window.set_location(0,-10)

player = pyglet.media.Player()
source = pyglet.media.StreamingSource()
mediaLoad = pyglet.media.load(vidPath)
player.queue(mediaLoad)
player.play()

@window.event
def on_draw():
    if(player.source and player.source.video_format):
        player.get_texture().blit(0,0)

pyglet.app.run()

exception I am getting :-

pi@raspberrypi:/var/terminal $ python vishal_code.py 
Traceback (most recent call last):
  File "vishal_code.py", line 9, in <module>
    mediaLoad = pyglet.media.load(vidPath)
  File "/home/pi/.local/lib/python2.7/site-packages/pyglet/media/__init__.py", line 133, in load
    loaded_source = decoder.decode(file, filename, streaming)
  File "/home/pi/.local/lib/python2.7/site-packages/pyglet/media/codecs/ffmpeg.py", line 1041, in decode
    return FFmpegSource(filename, file)
  File "/home/pi/.local/lib/python2.7/site-packages/pyglet/media/codecs/ffmpeg.py", line 460, in __init__
    self._file = ffmpeg_open_filename(asbytes_filename(filename))
  File "/home/pi/.local/lib/python2.7/site-packages/pyglet/media/codecs/ffmpeg.py", line 143, in ffmpeg_open_filename
    raise FFmpegException('Error opening file ' + filename.decode("utf8"))
pyglet.media.codecs.ffmpeg.FFmpegException: Error opening file /var/tmp/output.mp4
Exception AttributeError: "'FFmpegSource' object has no attribute '_packet'" in <bound method FFmpegSource.__del__ of <pyglet.media.codecs.ffmpeg.FFmpegSource object at 0x6e0af850>> ignored
pi@raspberrypi:/var/terminal $ 

[Carl Eugen Hoyos]

This does not look like an issue that can be fixed in FFmpeg.

[vishal]

Hi, pyglet is python library uses. Internally ffmpeg to read media file. Same issue persisted on Ubuntu 18 with ffmpeg version 3, but it is resolved on Ubuntu once ffmpeg got upgraded to 4.2 version.