[mythtv-users] Leanfront Skipping/Buffering

[glen]

On Sun, 2022-12-11 at 17:33 -0500, Peter Bennett wrote:
> 
> On 12/11/22 14:12, Angela wrote:
>  
> > 
> > I have a combined BE/FE directly connected to a TV and love the
> > speed of skipping.
> > I also have a Shield TV Pro 2019 connected to another TV and use
> > Kodi with the MythTV plugin and MythFrontend for Android, both work
> > very well and skipping is OK. Using WLAN.
> >  
> > I tried Leanfront, which might even be quicker with skipping, but
> > only for the next skip of 10 seconds. As it looks only some 15
> > seconds might be buffered. Skipping further than these 15 seconds
> > is in my eyes too slow. After a skip to build up buffer takes also
> > a long time, so next skips are too slow.
> >  
> > How I use skipping: 
> > - plain skipping (no commercial skipping activated) with 10 seconds
> > and 2 minutes configured
> > - need to skip 8 minutes commercials (4x 2 minutes) and correct
> > with some 1-2x 10 second skips back/ahead
> > - during replay skip back to repeat the last 10-20 seconds
> >  
> > How is the buffering for Leanfront implemented (what happens when I
> > skip), how much data/time is buffered?
> > Would it be possible to implement/configure a buffering of 30
> > seconds back and 10 minutes ahead (or at minimum of 1 minute ahead)
> > ?
> >  
> > 
> > 
> The buffering in leanfront is handled inside Exoplayer, which is a
> player code base from Google. I don't know if buffering is the real
> problem. Part of the problem is the necessity to search for the new
> place in the video. Exoplayer uses a binary search to find the place.
> This could be inefficient. MythTV uses a seek table on the database
> which gives the location and time of every keyframe in the recording.
> I already attempted to change the Exoplayer code to use the seek
> table, but there was little improvement and it caused some problems,
> so I disabled that code.
> A faster connection to your backend may help. Your router may not
> support the newest wifi standard. If you could connect using
> ethernet, that could go up to 1 Gbps and that may help. 
> Peter
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i'm on hardwire 1gbit all around. realize this is exoplayer issue and i
believe a difference with mpeg2 vs h264 or maybe its just larger files.
but it's livable and for me not every seek just about 1 in 3 or 4 i
would say. 
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