it seems that its a known issue in 10.1 if you've updated term.apk via play, and the fix is to copy libjackpal-androidterm4.so to /system/lib/
this was the same in cm10 - the hardware acceleration fix for youtube-hq caused some videos (certain codecs) to show a green line. the workaround is not to use those codecs.
Then how can I not use those codecs '. It would be nice if you could explain how to fix it. Btw thank you for your response.