display progress status for both mplayer and mpv

[thomasleveil]

warning: tested only with mplayer. Make sure to test it with mpv before merging

[np1]

Fantastic! So far it's working well with mpv audio and video. Will do a bit more testing. Well done!

The stderr redirection in your most recent commit work. I was making very similar changes but was setting stderr=subprocess.PIPE within Popen.subprocess(). Was that wrong? I see you set stderr=subprocess.STDOUT

Thanks again!

[thomasleveil]

stderr=subprocess.STDOUT tells popen to redirect any stderr output into stdout.
stdout=subprocess.PIPE tells open to pipe the stdout ouput (which now receives both stdout and stderr)
Then we just have to keep track of whatever data we can read from the popen object .stdout property instead of having to follow both .stdout and .stderr