[fritsch]

Btw. as this file is 720p - could you please try to disable Surface? Also stutter?

[CiNcH]

Nice - Nicely linear PTS fetched and output. Cool.

Bad thing is though that the delta is 40ms instead of 41.7ms. But it is actually as wrong for SPMC17 as it is for Kodi. Still, SPMC17 plays it smoothly.
 

Btw. as this file is 720p - could you please try to disable Surface? Also stutter?

Yes. That has been written before. It does not play 100% smooth all the time in MediaCodec EGL mode, but it does not exhibit those heavy stutters every 2-3s.

[peak3d]

Not sure if MediaTek drivers look at the "original fps", if so, its IMO wrong.

MediaTek should know nothing about container fps. Video decoder only receives ES, no?

And how does SPMC17 fix it? Think we haven't really understood the real problem.   

Original FPS seems for me not to be in Container, its more in SPS of the stream.
And yes, we pass this to MediaTex during initialization (but we don't pass container information)

If you really say its working "fine" with libstagefright, question is if you can see either in app or logcat if it plays 25 or 23.9.
From what streams tells it has to be played with 25.

Even if 25 fps is wrong, it should not lead to stutter, it should lead to slightly faster playback.
Because PTS values are clearly 40ms == 25fps

[CiNcH]

Original FPS seems for me not to be in Container, its more in SPS of the stream.

Yes. That's also what I assume. So everything should actually be fine as SPS fps is correct.
 

Even if 25 fps is wrong, it should not lead to stutter, it should lead to slightly faster playback.
Because PTS values are clearly 40ms == 25fps

With mpiet's provided sample where I stripped away the audio, I agree. With audio, playing the sample at 25fps would explain those stutters, no? The Kodi behavior is actually more plausible than SPMC17 (which also plays it with a wrong 40ms frame duration but without stutters). If you play video faster, you will run into problems with audio unless you resync video by repeating frames. However it actually looks like frames get dropped rather than repeated.

Anyway, after re-muxing it with mkvtoolnix and setting default duration to 24000/1001, everything is fine, see log:

CDVDVideoCodecAndroidMediaCodec::GetPicture index: 9, pts:6215000.0000
CDVDVideoCodecAndroidMediaCodec::GetPicture index: 10, pts:6256000.0000

Delta is 41ms rather than 40ms.

[combatratcat]

Hi Guys

has anyone tested KODI 18 on Sony TV to see if the Stutter Issues are resolved for 4K Videos?

As i saw in the change log some things have been changed on MediaCodec for Android.

Thanks for the reply.

Greetings Marco

[combatratcat]

So i have tested Kodi 18 (Kodi v18 Leia RC1 ) on Sony TV KD65XF9005.
Stutter Problems for 4K Movies is resolved.

[Dadde]

Hi everyone,unfortunately I'm experiencing the same problem with this topic with my bravia 55W755C. with 25 fps the video playback is defective, if I recode the video, as advised before, with the 24000/1001 the video playback is perfect, but the audio is out of sync. Is there any way to recode the video without losing the audio sync? Thanks in advance !!!

Generale
ID univoco                              : 223753716360348807282419165092524738472 (0xA85565F3C0E1BC879715E44794B647A8)
Nome completo                           : E:\Telefilm\Shameless\Shameless.US.9x01.Il.prezzo.per.essere.un.Gallagher.ITA.ENG.1080p.AMZN.WEB-DLMux.H.264-Morpheus.mkv
Formato                                 : Matroska
Versione formato                        : Version 4
Dimensione                              : 3,55 GiB
Durata                                  : 52 min 59s
Bitrate totale                          : 9.591 kb/s
Data codifica                           : UTC 2019-02-08 22:28:39
Creato con                              : mkvmerge v7.1.0 ('Good Love') 32bit built on Jul 27 2014 12:59:18
Compressore                             : libebml v1.3.0 + libmatroska v1.4.1
Video
ID                                      : 1
Formato                                 : AVC
Formato/Informazioni                    : Advanced Video Codec
Profilo formato                         : High@L4
Impostazioni formato                    : CABAC / 4 Ref Frames
Impostazioni formato, CABAC             : Si
Impostazioni formato, RefFrames         : 4 frame
ID codec                                : V_MPEG4/ISO/AVC
Durata                                  : 52 min 59s
Bitrate                                 : 9.012 kb/s
Larghezza                               : 1.920 pixel
Altezza                                 : 1.080 pixel
Rapporto aspetto visualizzazione        : 16:9
Modalità frame rate                     : Costante
Frame rate                              : 25,000 FPS
Frame rate originale                    : 23,976 (24000/1001) FPS
Spazio colore                           : YUV
Croma subsampling                       : 4:2:0
Profondità bit                          : 8 bit
Tipo scansione                          : Progressivo
Bit/(pixel*frame)                       : 0.174
Dimensione della traccia                : 3,34 GiB (94%)
Default                                 : Si
Forced                                  : No
colour_range                            : Limited
Colori primari                          : BT.709
Caratteristiche trasferimento           : BT.709
Coefficienti matrici                    : BT.709
Audio #1
ID                                      : 2
Formato                                 : AC-3
Formato/Informazioni                    : Audio Coding 3
Nome commereciale                       : Dolby Digital
ID codec                                : A_AC3
Durata                                  : 52 min 59s
Modalità bitrate                        : Costante
Bitrate                                 : 192 kb/s
Canali                                  : 2 canali
Channel layout                          : L R
Frequenza campionamento                 : 48,0 kHz
Frame rate                              : 31,250 FPS (1536 SPF)
Profondità bit                          : 16 bit
Modo compressione                       : Con perdita
Dimensione della traccia                : 72,8MiB (2%)
Titolo                                  : ITA
Lingua                                  : Italiano
ServiceKind/String                      : Complete Main
Default                                 : Si
Forced                                  : Si
Audio #2
ID                                      : 3
Formato                                 : AC-3
Formato/Informazioni                    : Audio Coding 3
Nome commereciale                       : Dolby Digital
ID codec                                : A_AC3
Durata                                  : 52 min 59s
Modalità bitrate                        : Costante
Bitrate                                 : 384 kb/s
Canali                                  : 6 canali
Channel layout                          : L R C LFE Ls Rs
Frequenza campionamento                 : 48,0 kHz
Frame rate                              : 31,250 FPS (1536 SPF)
Profondità bit                          : 16 bit
Modo compressione                       : Con perdita
Dimensione della traccia                : 146MiB (4%)
Titolo                                  : ENG
Lingua                                  : Inglese
ServiceKind/String                      : Complete Main
Default                                 : No
Forced                                  : No
Testo #1
ID                                      : 4
Formato                                 : UTF-8
ID codec                                : S_TEXT/UTF8
ID codec/Informazioni                   : UTF-8 Plain Text
Durata                                  : 51 min 34s
Bitrate                                 : 6 b/s
ElementCount                            : 54
Dimensione della traccia                : 2,40 KiB (0%)
Titolo                                  : Forced
Lingua                                  : Italiano
Default                                 : Si
Forced                                  : Si
Testo #2
ID                                      : 5
Formato                                 : UTF-8
ID codec                                : S_TEXT/UTF8
ID codec/Informazioni                   : UTF-8 Plain Text
Durata                                  : 52 min 42s
Bitrate                                 : 83 b/s
ElementCount                            : 970
Dimensione della traccia                : 32,2 KiB (0%)
Lingua                                  : Italiano
Default                                 : No
Forced                                  : No
Testo #3
ID                                      : 6
Formato                                 : UTF-8
ID codec                                : S_TEXT/UTF8
ID codec/Informazioni                   : UTF-8 Plain Text
Durata                                  : 51 min 18s
Bitrate                                 : 96 b/s
ElementCount                            : 1365
Dimensione della traccia                : 36,2 KiB (0%)
Titolo                                  : SDH
Lingua                                  : Inglese
Default                                 : No
Forced                                  : No

[kolbicz]

you can install SPMC17, which will work fine or you can fix these mkv's with following method:

• open mkv in MKVToolNix and deselect everything beside of the audio track you need
  
• start multiplexing - this will give you an mka file
  
• run eac3to without parameter on the file to get its details - in my case 1: AC3, 2.0 channels, 192kbps, 48kHz
  
• now run eac3to again on the .mva to create an AC3 file: eac3to input.mva output.ac3 -192 -slowdown
  
• add this new file to MKVToolNix (add source files) and deselect the original audio file, select again the video file
  
• for the video set 24000/1001p as FPS/duration
  
• now multiplex again to get an mkv that has 23.976 FPS with corrected audio
  

this works for videos that have a framerate mismatch which you can see in mediainfo like this:

Frame rate : 25.000 FPS
Original frame rate : 23.976 (24000/1001) FPS

[kolbicz]

Since SPMC17 alphas do not suffer from this issues (SPMC16 does), I once went over the commits on top of stock Kodi and noted the most relevant (A/V related) ones. I am attaching the list for documentation...

• FIX: [amc] force immediate rendering
  
• FIXUP: [AT] blocking writes (also tried sample remuxed without audio)
  
• FIX: [AT] simplify blocking loop (also tried sample remuxed without audio)
  
• FIX: [amc] let droid do its ts magic
  
• ADD; [amc] Detect and report frames dropped in decoder
  
• FIX: [amcs] Adjust surface rect only when really necessary
  
• FIX: [droid] use CLOCK_MONOTONIC, as OS
  
• FIX: [droid] better texture pool
  
• [K] Videosync
  
• FIX: [droid;videosync] handle refresh rate changes (Sony does not do refresh rate changing)
  
• FIX: [droid;videosync] use actual vsync time
  
• FIX: [droid] simplify video sync
  
• CHG: [droid;vsync] use vblank event for videosync
  I wonder why sync happens twice, in an own thread (Run method) and via FrameCallback method. And as far as I can see, both get triggered by Choreographer.FrameCallback.
  
• FIX: [refclock] use provided timestamp
  
• CHG: [droid;amc] Dynamic surface view instances
  

Some are more likely, some are less likey. Some have also been present in SPMC16 already which however does suffer from the issue... 

i have tried the first compiled version of SPMC 17 which i was able to find from http://download.semperpax.com/spmc/android-arm/?C=M;O=A

this is 17.3 built on Jun 17. sadly there are no earlier compiled versions and i never compiled something for Android, but if we could test some earlier builds, we probably can find the commit that fixed the issue. it must be in a change that happened before Jun 17. 

can you compile SPMC yourself? would be interesting to see if the issue still was present in the beginning of v17 - for example this build: 17.0a1-Krypton

[CiNcH]

Looks like packed bitstream got fixed with ffmpeg used in current Kodi nightlies. Tried some samples and they now seem to play fine.

[fritsch]

Kodi's nightlies use the very same ffmpeg as Leia does

[kolbicz]

Looks like packed bitstream got fixed with ffmpeg used in current Kodi nightlies. Tried some samples and they now seem to play fine.

i have installed kodi-20190924-7a9ced55-master-armeabi-v7a.apk on my Sony TV (Oreo) and the issue from this thread is still happening.