vnsi: only consider video and audio streams for playing time
pvr-addons: fix the mime type for mpegts
Needed when https://github.com/xbmc/xbmc/pull/6036 is merged
See ffmpeg commit: fdcb2873e1c898cf26216f7e80d95d03387ba55b
Merge pull request #394 from FernetMenta/reftime

vnsi: only consider video and audio streams for playing time
Merge pull request #397 from margro/mpegts_mime_fix

pvr-addons: fix the mime type for mpegts