openjfx 13 MediaPlayer vodeo stutter

[Farrukh Najmi]

Sorry I just realized that this is the dev team mailing list and my post
may not be appropriate here. I have posted a question on this at
stackoverflow along with a minimal standalone test program:

https://stackoverflow.com/questions/59364435/javafx-video-stutter-after-playing-same-video-over-and-over-for-a-couple-of-hour

On Sun, Dec 15, 2019 at 6:13 PM Farrukh Najmi <farrukh.najm at gmail.com>
wrote:

> On Ubuntu linux 18.04 I have been successfully using openjfx 13 during
> development of a new app. My app plays the same video over and over
> using javafx.scene.media.MediaView and javafx.scene.media.MediaPlayer.
> At first the video plays flawlessly. After a few hours the video becomes
> choppy and starts displaying stutter. I have analyzed my app for memory
> leaks and thread leaks and do not believe it has any.
> I observe that "top -H" command shows the following with QuantumRenderer
> at top:
>
> Threads: 575 total,   6 running, 515 sleeping,   0 stopped,   1 zombie
> %Cpu(s): 64.3 us,  8.1 sy,  0.0 ni, 25.0 id,  0.0 wa,  0.0 hi,  2.6 si,
>  0.0 st
> KiB Mem : 26.7/7988780  [|||||||||||||||||||||||||||
>                                                   ]
> KiB Swap:  0.0/2097148  [
>                                                    ]
>
>   PID USER      PR  NI    VIRT    RES    SHR S %CPU %MEM     TIME+ COMMAND
>
>  1432 root      20   0  0.101t 702424  90656 R 93.5  8.8   1471:14
> QuantumRenderer
>  9901 root      20   0  0.101t 702424  90656 R 60.1  8.8 424:41.22
> queue7:src
>  2592 root      20   0  0.101t 702424  90656 S 59.8  8.8 505:55.76
> queue5:src
>  1133 ubuntu    20   0  912192 172908  87736 R 58.2  2.2   1133:23 Xorg
>
>  1335 root      20   0  334104  34200   9968 S  5.6  0.4  77:41.33 val
>
>  9900 root      20   0  0.101t 702424  90656 S  4.2  8.8  28:22.37
> qtdemux3:sink
>  2594 root      20   0  0.101t 702424  90656 S  2.9  8.8  30:41.56
> qtdemux2:sink
>  2590 root      20   0  0.101t 702424  90656 S  1.6  8.8  16:05.02
> queue4:src
>  9903 root      20   0  0.101t 702424  90656 S  1.6  8.8  11:08.72
> queue6:src
>  1976 ubuntu    -6   0 1172376  12012   8796 S  1.6  0.2  26:16.32
> alsa-sink-ALC25
>  9546 ubuntu    20   0   51728   4560   3544 R  1.6  0.1   0:00.26 top
>
>  1620 root      20   0  0.101t 702424  90656 S  0.7  8.8  14:45.24 JavaFX
> Applicat
>  9887 root      20   0  0.101t 702424  90656 S  0.7  8.8   4:27.78
> Timer-47
>  9902 root      20   0  0.101t 702424  90656 S  0.7  8.8   2:46.59
> threaded-ml
>  9905 root      20   0  0.101t 702424  90656 S  0.7  8.8   4:37.95
> Timer-49
>  1454 ubuntu    20   0 3389116 131052  68972 S  0.7  1.6   3:11.03
> gnome-shell
>  1487 ubuntu     9 -11 1172376  12012   8796 S  0.7  0.2  10:28.21
> pulseaudio
>   912 root      20   0  0.101t 702424  90656 S  0.3  8.8   1:09.97 GC
> Thread#0
>   916 root      20   0  0.101t 702424  90656 S  0.3  8.8   0:30.33 G1
> Young RemSet
>   920 root      20   0  0.101t 702424  90656 S  0.3  8.8   0:43.78 VM
> Thread
>  1619 root      20   0  0.101t 702424  90656 S  0.3  8.8   4:41.19
> InvokeLaterDisp
>  2228 root      20   0  0.101t 702424  90656 S  0.3  8.8   1:06.68 GC
> Thread#3
>  9883 root      20   0  0.101t 702424  90656 S  0.3  8.8   1:25.20
> JFXMedia Player
>
> I am looking for suggestions on how to fix the video stutter issue. Is
> this a known issue. If so, please share link to issue.
> If it is a known issue, has it been fixed in openjfx 14-ea+4? I tried
> using that EA release but with that as dependency my video seems to stop
> and first frame and does not play at all.
> I am wondering if there are any migration steps that I may be missing.
>
> TIA for any suggestion on how to fix my video stutter issue with openjfx
> 13 or openjfx 14-ea+4.
>
> --
> Regards,
> Farrukh
>


-- 
Regards,
Farrukh