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TV playback not smooth

Posted: 24 Mar 2019, 15:21
by darius65
I purchased MRMC for shield and appletv 4k and when I stream TV from my Mythtv backend on AppleTV it's not as good as on Shield. There is noticeable jerkiness. Also it take several second (3-5) to start streaming

Re: TV playback not smooth

Posted: 24 Mar 2019, 15:28
by davilla
darius65 wrote: 24 Mar 2019, 15:21 I purchased MRMC for shield and appletv 4k and when I stream TV from my Mythtv backend on AppleTV it's not as good as on Shield. There is noticeable jerkiness. Also it take several second (3-5) to start streaming
debuglog please

Re: TV playback not smooth

Posted: 24 Mar 2019, 16:08
by darius65
https://pastebin.com/ndgRtzQ0

Both devices are connected to the same switch and are playing any content including 4K without any problems (other than TV on appletv).

Re: TV playback not smooth

Posted: 24 Mar 2019, 16:16
by davilla
darius65 wrote: 24 Mar 2019, 16:08 https://pastebin.com/ndgRtzQ0

Both devices are connected to the same switch and are playing any content including 4K without any problems (other than TV on appletv).
Turn off the FFMpeg debug setting. It's filling the log with spew and I can't see what's going on.

For ref, this is playing from mythtv pvr addon.

Re: TV playback not smooth

Posted: 24 Mar 2019, 16:23
by darius65
I updated the log (same url)

Re: TV playback not smooth

Posted: 24 Mar 2019, 17:09
by davilla
12:21:06.469 T:6115160064 NOTICE: CDVDVideoCodecFFmpeg::CDropControl: calculated diff time: 33366
12:21:22.044 T:6122614784 DEBUG: JSONRPC: Value does not lay between minimum and maximum in type playlistid
12:21:38.357 T:6097956864 NOTICE: CDVDPlayer::CloseFile()

Nothing in log regarding player, are you using the same deinterlacer on appletv4k as shield ?

Re: TV playback not smooth

Posted: 24 Mar 2019, 18:26
by darius65
Both are set to Auto (deinterlace setting)

Looking at the codec info while playing videos, there are few differences:

Shield
fr:59.940, dc:amp-mpeg2(S)

AppleTV
fr:29.970,dc:ff-mpeg2video

Re: TV playback not smooth  [SOLVED]

Posted: 24 Mar 2019, 18:36
by cosmoxl
darius65 wrote: 24 Mar 2019, 18:26 Both are set to Auto (deinterlace setting)

Looking at the codec info while playing videos, there are few differences:

Shield
fr:59.940, dc:amp-mpeg2(S)

AppleTV
fr:29.970,dc:ff-mpeg2video
Auto is for the deinterlace detection. The shield using AMC(s) won't give you a choice of deinterlacing method as it's internal. For the apple tv you'll have an option for deinterlace method. Try both yadifs and both bobs to see what works best.

Re: TV playback not smooth

Posted: 24 Mar 2019, 18:37
by darius65
I found this older post viewtopic.php?t=1156 where you suggested to use bob inverted. That made huge difference.