Hello there!
I have more than 12 years of experience in gstreamer under linux (i guess i am one of its first massive adopters), i've been quite active in bug reporting in the past.
Last thing i was playing with was a stereo support in mpv player (C++, gstreamer, ffmpeg/libav,...).
I am not bidding often on freelancer.com, just when i see some interesting projects like this one. Contact me for more details via the chat. Check my feedback here, i am 100% serious professional.
best regards,
R. E.