hvfvhigh, new ffmpeg, etc

[RS]

>From: RS Sent: Tuesday, August 23, 2016 22:39

>Unless and until HLS is fixed, FlashHD is the only way to get 1280x720 
>25fps unless you re-encode HVFHD to 25fps.

When I wrote the suggestion of re-encoding HVFHD to 25fps I was assuming 
that I could use ffmpeg -r 25 to drop alternate frames to reduce the frame 
rate.  It seems it is not that easy.  h.264 identifies the difference from 
the previous frame and encodes it.  If I delete the previous frame it stops 
working.  I just got a lot of Invalid timestamp errors from ffmpeg.  It 
seems I have to uncompress the HVFHD, which will result in an enormous file, 
and then re-encode it at 25fps with libx264.  Does anyone have any ideas how 
to do it?