dash.js VOD: does not fire ended reliably when video is played through

[phloxic]

dash.js regesses in development branch regarding end of video handling. Hard to detect for developers because the problem does not manifest itself after one seeks towards the end of video. Video must be played through to trigger the issue. First detected when diagnosing #1, see also https://github.com/Dash-Industry-Forum/dash.js/issues/694#issuecomment-135124483 Symptom: At some point during playback the requested index for the audio track becomes -1:

[audio] Getting the request for time: 67.899999 
flowplayer.mpegdash.min.js:29 [audio] Index for time 67.899999 is -1 

repeated over and over again. And shortly before end of video player is stuck in unusable state.

Maybe specific to segment timeline in MPD.

• 1.4.0 release: Chrome ok (1.4.0 does not work in Safari)
• https://github.com/Dash-Industry-Forum/dash.js/commit/7568cf5dd6a2 (version currently used by plugin) works in Safari, but exhibits issue in Safari regularly; rarely, but more often than with 1.4.0, in Chrome (for Chrome run looping playlist at http://michael-weber.blacktrash.org/showreels.html#showreelpl until it stalls)
• https://github.com/Dash-Industry-Forum/dash.js/commit/516b421c0bd0 ff. exhibit the problem in Chrome too

[phloxic]

Works if MP4Box advice in README is heeded.