Art S R wrote:
> After much befuddlement and frustration, I've finally resolved this
> problem. I went back to earlier versions of mplayer.py in svn until I
> found the latest version that would work displaying live TV (10609)
> and did a diff with the version I was using from Freevo 1.8.3 to see
> if I could figure out what's causing the recent versions to not work.
> After much more tracing, I located the problem here:
>
> 240 #command = self.sort_filter(command)
> 241
> 242 command += ['%(url)s' % args]
> 243
> 244 _debug_(' '.join(command[1:]))
> 245
> 246 self.mode = mode
>
> Although the debug statement in line 244 was showing the correct
> mplayer command in my log:
>
> /usr/bin/mplayer -slave -vo xv,sdl,x11, -ao oss:/dev/dsp -autosync 100
> -nolirc -nojoystick -autoq 100 -screenw 800 -screenh 600 -fs -nocache
> tv:// -tv
> driver=v4l2:freq=55.250:device=/dev/video0:input=0:norm=NTSC:width=640:height=480:outfmt=yuy2
Well good work to track down this problem, thanks for this.
All ' '.join(command[1:] does is to convert the command list to a string
for printing.
You can change the _debug_ statement to:
_debug_('%r' % (command,))
and this will be printed exactly and represented as a list.
What is possible is that the arguments are not correct in the list; may
be one has a space in it when it shouldn't have. Would you please make
this change and post the resulting command, thanks?
The difference between a list and a string when passed to subprocess is
that lists are executed directly and strings are executed through a
sub-shell. With lists there is no need to quote arguments as each
argument is in a list item. With strings arguments with spaces need to
be quoted. Lists will start marginally faster and use a bit less memory
as there is no extra shell being spawned.
Duncan
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