Sound but no video? (4k, x264, non-HDR)

Noticed this recently with some videos. Sound plays ok, no video.

Log says right after playing file:

2022-02-20 00:04:30.547 T:1851 ERROR <general>: CDVDVideoCodecDRMPRIME::AddData - send packet failed: End of file (-541478725)

2022-02-20 00:04:40.800 T:1852 INFO <general>: Skipped 3 duplicate messages..

2022-02-20 00:04:40.800 T:1852 INFO <general>: CVideoPlayerAudio::Process - stream stalled

2022-02-20 00:04:41.815 T:1078 INFO <general>: Loading skin file: DialogSeekBar.xml, load type: LOAD_ON_GUI_INIT

2022-02-20 00:04:45.559 T:1851 ERROR <general>: CDVDVideoCodecDRMPRIME::Reset - receive frame failed: Resource temporarily unavailable (-11)

2022-02-20 00:05:00.982 T:1851 ERROR <general>: CDVDVideoCodecDRMPRIME::Reset - receive frame failed: Resource temporarily unavailable (-11)

2022-02-20 00:05:04.649 T:1078 INFO <general>: Loading skin file: VideoOSD.xml, load type: KEEP_IN_MEMORY

2022-02-20 00:05:07.496 T:1851 ERROR <general>: CDVDVideoCodecDRMPRIME::AddData - send packet failed: End of file (-541478725)

2022-02-20 00:05:17.969 T:1852 INFO <general>: Skipped 3 duplicate messages..

2022-02-20 00:05:17.969 T:1852 INFO <general>: CVideoPlayerAudio::Process - stream stalled

2022-02-20 00:05:20.981 T:1078 INFO <general>: CVideoPlayer::CloseFile()

2022-02-20 00:05:20.981 T:1078 INFO <general>: VideoPlayer: waiting for threads to exit

2022-02-20 00:05:20.989 T:1850 INFO <general>: CVideoPlayer::OnExit()

2022-02-20 00:05:20.989 T:1850 INFO <general>: Closing stream player 1

2022-02-20 00:05:20.989 T:1850 INFO <general>: Waiting for audio thread to exit

2022-02-20 00:05:20.998 T:1852 INFO <general>: thread end: CVideoPlayerAudio::OnExit()

2022-02-20 00:05:20.998 T:1850 INFO <general>: Closing audio device

2022-02-20 00:05:20.999 T:1850 INFO <general>: Deleting audio codec

2022-02-20 00:05:20.999 T:1850 INFO <general>: Closing stream player 2

2022-02-20 00:05:20.999 T:1850 INFO <general>: waiting for video thread to exit

2022-02-20 00:05:21.212 T:1084 INFO <general>: CActiveAESink::OpenSink - initialize sink

2022-02-20 00:05:21.415 T:1084 INFO <general>: CAESinkALSA::Initialize - Attempting to open device "@:CARD=Audio,DEV=0"

2022-02-20 00:05:21.439 T:1084 INFO <general>: CAESinkALSA::Initialize - Opened device "sysdefault:CARD=Audio"

2022-02-20 00:05:21.441 T:1084 INFO <general>: CAESinkALSA::InitializeHW - Your hardware does not support AE_FMT_FLOAT, trying other formats

2022-02-20 00:05:21.442 T:1084 INFO <general>: CAESinkALSA::InitializeHW - Using data format AE_FMT_S16NE

2022-02-20 00:05:22.511 T:1851 ERROR <general>: CDVDVideoCodecDRMPRIME::Reset - receive frame failed: Resource temporarily unavailable (-11)

2022-02-20 00:05:22.517 T:1851 INFO <general>: thread end: video_thread

2022-02-20 00:05:22.518 T:1850 INFO <general>: deleting video codec

2022-02-20 00:05:22.564 T:1850 INFO <general>: Closing stream player 3

2022-02-20 00:05:22.567 T:1078 INFO <general>: VideoPlayer: finished waiting

2022-02-20 00:05:22.567 T:1078 INFO <general>: CVideoPlayer::CloseFile()

2022-02-20 00:05:22.567 T:1078 INFO <general>: VideoPlayer: waiting for threads to exit

2022-02-20 00:05:22.567 T:1078 INFO <general>: VideoPlayer: finished waiting

2022-02-20 00:05:27.289 T:1078 INFO <general>: VideoPlayer::OpenFile: /var/media/sda1-usb-General_USB_Flas/somemovie.mkv

2022-02-20 00:05:27.290 T:1855 INFO <general>: Creating InputStream

2022-02-20 00:05:27.300 T:1855 INFO <general>: Creating Demuxer

2022-02-20 00:05:27.381 T:1855 INFO <general>: Opening stream: 0 source: 256

2022-02-20 00:05:27.381 T:1855 INFO <general>: Creating video codec with codec id: 27

2022-02-20 00:05:27.381 T:1855 INFO <general>: CDVDVideoCodecDRMPRIME::Open - using decoder V4L2 mem2mem H.264 decoder wrapper

2022-02-20 00:05:27.421 T:1855 INFO <general>: Creating video thread

2022-02-20 00:05:27.421 T:1856 INFO <general>: running thread: video_thread

2022-02-20 00:05:27.421 T:1855 INFO <general>: Opening stream: 1 source: 256

2022-02-20 00:05:27.421 T:1855 INFO <general>: Finding audio codec for: 86056

2022-02-20 00:05:27.422 T:1855 INFO <general>: CDVDAudioCodecFFmpeg::Open() Successful opened audio decoder eac3

2022-02-20 00:05:27.422 T:1855 INFO <general>: Creating audio thread

2022-02-20 00:05:27.422 T:1857 INFO <general>: running thread: CVideoPlayerAudio::Process()

2022-02-20 00:05:27.422 T:1855 INFO <general>: Opening stream: 2 source: 256

2022-02-20 00:05:27.435 T:1857 INFO <general>: Creating audio stream (codec id: 86056, channels: 6, sample rate: 48000, no pass-through)

2022-02-20 00:05:27.437 T:1084 INFO <general>: CActiveAESink::OpenSink - initialize sink

2022-02-20 00:05:27.634 T:1084 INFO <general>: CAESinkALSA::Initialize - Attempting to open device "@:CARD=Audio,DEV=0"

2022-02-20 00:05:27.654 T:1084 INFO <general>: CAESinkALSA::Initialize - Opened device "sysdefault:CARD=Audio"

2022-02-20 00:05:27.658 T:1084 INFO <general>: CAESinkALSA::InitializeHW - Your hardware does not support AE_FMT_FLOAT, trying other formats

2022-02-20 00:05:27.658 T:1084 INFO <general>: CAESinkALSA::InitializeHW - Using data format AE_FMT_S16NE

2022-02-20 00:05:34.132 T:1856 ERROR <general>: CDVDVideoCodecDRMPRIME::AddData - send packet failed: End of file (-541478725)

Sorry, that was a bit hurried. Platform is RPi4 with LE 10. This is with an official Kodi sample. I've narrowed it down to 4k encoded in H.264, it reproduces 100%. With DRM prime on, there's no sound. With the option off, video plays but frames are dropped. Tried with Kodi 18, it plays with MMAL on, but still with dropped frames.

Full log with a clean LE 10 install: https://zerobin.net/?d48e3bfab286a…GkOWsOun2EzrLA8

I see. Bummer.