last few seconds of video are not played

[Mark Spieth]

when a recording or video is played, the last few seconds are not played.

There are 2 reasons for this:

1. appended audio with no more video is sent and discarded but the audiooutput.

so if not paused, feed the audio into the output buffer carefully but not with infinite wait.

2. eof is detected and any frames in the queue are discarded.

delay eof activation until all frames are played

needs some testing with unusual cases such as audio only and video only.

this is another of my annoyances fixed.

patch attached.