| Check video tracks' language attributes. | |
| EVENT(canplaythrough) | |
| ** Check in-band kind attributes | |
| EXPECTED (video.videoTracks.length == '2') OK | |
| EXPECTED (video.videoTracks.getTrackById('V0').language == 'zh') OK | |
| EXPECTED (video.videoTracks.getTrackById('V1').language == 'ru') OK | |
| END OF TEST | |