bit4freak The issue was not resolved in Krypton and will probably never be. Kodi developers no longer update Krypton and I doubt any of us has knowledge to backport huge Leia changes.
No one expects fixes in Krypton. Bad news it's still in Leia. It occurs less frequently but it's still there.
The 2 of my samples and logs are coming from newest Leia build.
SAMPLE 2 - 70a1jpifn105tupg4homm88zcph8v2tx
LOG: Ubuntu Pastebin
LOG2: Ubuntu Pastebin
This sample is tricky because it can play flawlessly couple of times but eventually it will stutter in the moment the test subs show on the screen.
test platform: TX5 PRO S905X, LibreELEC-S905.arm-8.90.1 running from SD Card.
Your issue has nothing to do with subtitles rendering. Subtitle rendering issue was identified in S912 caused by libhybris emulator.
In first LOG is no skips, perfect playback, most of frames prepared for rendering 80 ms (2 frames ahead). Render loop, only time critical thread, is fast enough ( 5-10ms) and most of frame time (41ms) is waiting in poll-frame. In second LOG2 are 6 frame skips after ~500ms lost of playback control. Probably another background task heavy loads CPUs. You can try to enable all component specific debugging to see offender.
22:30:35.089 T:3989566352 DEBUG: CAMLCodec::GetTimeSize: len:40 dl:3124794 fs:3067042 front:55489
22:30:35.090 T:4040168336 DEBUG: CVideoPlayer::ProcesVideoData size:84700 dts:4.796 pts:4.880 dur:41.000ms, clock:2.333 level:29
22:30:35.092 T:4040168336 DEBUG: CVideoPlayer::ProcesVideoData size:56262 dts:4.838 pts:4.838 dur:41.000ms, clock:2.334 level:29
22:30:35.097 T:3989566352 DEBUG: CAMLCodec::DequeueBuffer waited:8.166ms m_rel:0
22:30:35.613 T:4040168336 DEBUG: CVideoPlayer::ProcesVideoData size:126521 dts:4.880 pts:5.088 dur:41.000ms, clock:2.347 level:30
22:30:35.613 T:4092838320 DEBUG: CAMLCodec::PollFrame elapsed:28.649ms
22:30:35.614 T:4040168336 DEBUG: CVideoPlayer::ProcesVideoData size:78953 dts:4.921 pts:5.005 dur:41.000ms, clock:2.857 level:26
22:30:35.615 T:4040168336 DEBUG: CVideoPlayer::ProcesVideoData size:54098 dts:4.963 pts:4.963 dur:41.000ms, clock:2.858 level:26
22:30:35.615 T:4092838320 DEBUG: PrepareNextRender: frameOnScreen: 2.858 renderPts: 2.983 nextFramePts: 2.461 -> diff: 0.522 render: 1 forceNext: 0
22:30:35.616 T:4092838320 DEBUG: CRenderManager::PrepareNextRender Frame Skip:1 iter.pts:2.502 lf:8 latency:0.125 Clock:2.858
22:30:35.616 T:3989566352 DEBUG: CAMLCodec::GetTimeSize: len:40 dl:3011130 fs:3067042 front:55489
22:30:35.616 T:3989566352 DEBUG: CAMLCodec::GetTimeSize: len:39 dl:3011130 fs:3011553 front:64791
22:30:35.616 T:3989566352 DEBUG: CAMLCodec::GetTimeSize: len:38 dl:3011130 fs:2946762 front:133069
22:30:35.617 T:3989566352 DEBUG: CAMLCodec::GetPicture: index:948, pts:2.544 dur:42.000ms overflow:0
22:30:35.617 T:3989566352 DEBUG: CVideoPlayerVideo::OutputPicture - ttd:-315ms pts:2.544 Clock:2.859 Level:0 elapsed:0.007ms
22:30:35.618 T:3989566352 DEBUG: CAMLCodec::GetTimeSize: len:38 dl:3011130 fs:2946762 front:133069
22:30:35.618 T:3989566352 DEBUG: CAMLCodec::GetPicture: index:949, pts:2.586 dur:42.000ms overflow:0
22:30:35.618 T:3989566352 DEBUG: CVideoPlayerVideo::OutputPicture - ttd:-274ms pts:2.586 Clock:2.861 Level:1 elapsed:0.003msYour issue has nothing to do with subtitles rendering. In second LOG2 are 6 frame skips after ~500ms lost of playback control.
In the second log I've played the file couple of times so it's messy.
I will make a third log, this time using the first sample from Star Trek and will enable all components.
Something causes these stutters because exactly the same samples or any other video files without subs are playing like a charm.
OK. Two logs again using this sample
LOG1: there was 1 visible stutter - Ubuntu Pastebin
LOG2: sample played stutter free - Ubuntu Pastebin
Maybe there will be some differences between the two that will allow to identify the issue.
Last build that was free from this was kszaqs Jarvis-7.0.3.012l
No one expects fixes in Krypton. Bad news it's still in Leia. It occurs less frequently but it's still there.
The 2 of my samples and logs are coming from newest Leia build.
I feel for you bro, but I really don't encounter subtitle stuttering on our S905X boxes. 99 percent of the movies we watch have external .srt and it plays fine. I don't have S912 to test.
I feel for you bro, but I really don't encounter subtitle stuttering on our S905X boxes. 99 percent of the movies we watch have external .srt and it plays fine. I don't have S912 to test.
frequenzy, what is your subtitles settings (font, size, Colours etc)?
I really don't encounter subtitle stuttering on our S905X boxes. 99 percent of the movies we watch have external .srt and it plays fine.
Confirm - 100% of my english videos have external(.srt) subtitles and playing fine on my S905X boxes - last video watched yesterday
I have a S912 running LE 8.2 - will do some tests later - S912 is currently rarely used
Confirm - 100% of my english videos have external(.srt) subtitles and playing fine on my S905X boxes - last video watched yesterday
I have a S912 running LE 8.2 - will do some tests later - S912 is currently rarely used
Tim_Taylor, I also encounter minor stuttering in beginning of the movie (only first line of the subtitles) in my nexbox S905X but after that no stuttering visible. Kindly mention your subtitles font, size and colour?
Subtitle font, color and size = default
Subtitle font, color and size = default
that’s main the reason, because of default setting there is no stuttering. If someone mess with subtitles settings in krpton then subtitles stuttering appears.
that’s main the reason, because of default setting there is no stuttering. If someone mess with subtitles settings in krpton then subtitles stuttering appears.
Why should i change subtitle settings ?
Why should i change subtitle settings ?
because of tv viewing distance, some people changes subtitles size setting (just like me 36, colour cyan and font bold italic).
Dead end here - krypton is final
Option: configure subtitle settings to default until kodi developer fixed it in leia
Dead end here - krypton is final
Option: configure subtitle settings to default until kodi developer fixed it in leia
That’s it.Thanks and Regards
Only for explaining S912 subtitles issue. Letter rendering cost relatively lot of time. Rendered letters are cached and next rendering is then fast. Typically stuttering can appear at the begin of movie or at font changes ( italics).
Typically stuttering can appear at the begin of movie or at font changes (italics).
And this is exactly where stutterings appear. With the difference that it's not only on S912 but S905X too.
Option: configure subtitle settings to default until kodi developer fixed it in leia
Tested with default subtitles settings and the problem persists.
Some of you won't notice it at all. I've found only couple of files where it can be seen. Other videos play OK and even when there are stutters they are unnoticeable during watching.
Hope it will be fixed in final Leia build.
Some of you won't notice it at all. I've found only couple of files where it can be seen.
You are very, very sensitive.
A friend of mine is like You - his eyes are better than an electron microskope 
You are very, very sensitive.
A friend of mine is like You - his eyes are better than an electron microskope
Yes, I am aware of my disroder My brain just can't stand any imperfections in some matters
My brain just can't stand any imperfections in some matters
You need another hardware - amlogic is just another word for imperfection 
