TL;DR: As the source code indicates, you should install ffmpeg add it to your %PATH%. Since ffplay comes with ffmpeg, this should solve your problem.
You can install ffmpeg here: http://ffmpeg.org/
After installation, you can open your control panel, and then search environment. There you can adjust your %PATH% variable. Add the ffmpeg installation's binary path to the %PATH%.
And here's why from source code:
def get_encoder_name():
"""
Return enconder default application for system, either avconv or ffmpeg
"""
if which("avconv"):
return "avconv"
elif which("ffmpeg"):
return "ffmpeg"
else:
# should raise exception
warn("Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work", RuntimeWarning)
return "ffmpeg"
def get_player_name():
"""
Return enconder default application for system, either avconv or ffmpeg
"""
if which("avplay"):
return "avplay"
elif which("ffplay"):
return "ffplay"
else:
# should raise exception
warn("Couldn't find ffplay or avplay - defaulting to ffplay, but may not work", RuntimeWarning)
return "ffplay"
def which(program):
"""
Mimics behavior of UNIX which command.
"""
# Add .exe program extension for windows support
if os.name == "nt" and not program.endswith(".exe"):
program += ".exe"
envdir_list = [os.curdir] + os.environ["PATH"].split(os.pathsep)
for envdir in envdir_list:
program_path = os.path.join(envdir, program)
if os.path.isfile(program_path) and os.access(program_path, os.X_OK):
return program_path
From this we can know that it looks up those programs from your environment variable %PATH%. And that's why installing those softwares and adding them to your %PATH% should solve the problem.
