audio buffers are are now properly cleared out when there is no audio track, fixed a bug with wrong frame size when missing audio buffers, some mp4 videos still seem to be off on the timing (ie half speed)
audio buffers are are now properly cleared out when there is no audio track, fixed a bug with wrong frame size when missing audio buffers, some mp4 videos still seem to be off on the timing (ie half speed)

kritzikratzi/ofxAvCodec,kritzikratzi/ofxAvCodec,kritzikratzi/ofxAvCodec