gst_parse_error: no element "vaapih265dec"

[Bill Hofmann]

Ok, thanks.

On Tue, Nov 8, 2022 at 6:56 PM Arun Raghavan <arun at arunraghavan.net> wrote:

> On Sat, 5 Nov 2022, at 6:30 PM, Bill Hofmann via gstreamer-devel wrote:
> > OK. Looking with the GST_DEBUG=2,vaapi*:5 results. The two Gstreamer
> > calls are Gst.init(None) and
> > Gst.parse_launch with this pipeline:
> >> souphttpsrc location="http://localhost/foo.m3u8" ! parsebin name=pb !
> queue ! vaapih265dec !
> >> video/x-raw,format=P010_10LE ! queue max-size-bytes=100663300 ! kmssink
> connector-id=308 plane-id=31
> >> pb. ! queue ! fdkaacdec ! scaletempo ! volume volume=0.9 ! alsasink
> >
> > The Gst logging output is (from system log..., this is running as a
> service):
> >> *Nov 05 15:08:09 player0 systemd[682]: Queued start job for default
> target Main User Target.*
> >> Nov 05 15:08:19 player0 python3[716]: 0:00:10.017282911   716
> 0x562e9953f890 INFO                  python lvplayer.py:74:__init__: Start
> init config: '/media/views/content/config/nuc.json'
> >> Nov 05 15:08:21 player0 python3[716]: 0:00:11.516405122   716
> 0x562e9953f890 ERROR           GST_PIPELINE
> subprojects/gstreamer/gst/parse/grammar.y:499:gst_parse_element_make: no
> element "vaapih265dec"
> >> Nov 05 15:08:21 player0 python3[716]: 0:00:11.516417510   716
> 0x562e9953f890 ERROR           GST_PIPELINE
> subprojects/gstreamer/gst/parse/grammar.y:1118:priv_gst_parse_yyparse: link
> has no sink [source=@0x562e99792190]
> >> Nov 05 15:08:21 player0 python3[716]: 0:00:11.516439058   716
> 0x562e9953f890 ERROR           GST_PIPELINE
> subprojects/gstreamer/gst/parse/grammar.y:1118:priv_gst_parse_yyparse: link
> has no source [sink=@0x562e99792490]
> >> Nov 05 15:08:21 player0 python3[716]: Traceback (most recent call last):
> >> Nov 05 15:08:21 player0 python3[716]:   File
> "/home/player/lvplayer/src/lvplayer/lvplayer.py", line 948, in <module>
> >> Nov 05 15:08:21 player0 python3[716]:     sys.exit(main(sys.argv))
> >> Nov 05 15:08:21 player0 python3[716]:   File
> "/home/player/lvplayer/src/lvplayer/lvplayer.py", line 938, in main
> >> Nov 05 15:08:21 player0 python3[716]:     player = Player(args[1])
> >> Nov 05 15:08:21 player0 python3[716]:   File
> "/home/player/lvplayer/src/lvplayer/lvplayer.py", line 112, in __init__
> >> Nov 05 15:08:21 player0 python3[716]:     self._player =
> Gst.parse_launch(PIPELINE)
> >> Nov 05 15:08:21 player0 python3[716]: gi.repository.GLib.GError:
> gst_parse_error: no element "vaapih265dec" (1)
> >> Nov 05 15:08:21 player0 systemd[682]: player_service.service: Main
> process exited, code=exited, status=1/FAILURE
> >> Nov 05 15:08:21 player0 systemd[682]: player_service.service: Failed
> with result 'exit-code'.
> >> Nov 05 15:08:21 player0 systemd[682]: Failed to start LiquidView Player
> Service.
> >> Nov 05 15:08:21 player0 systemd[682]: Reached target Main User Target.
> >> Nov 05 15:08:21 player0 systemd[682]: Startup finished in 12.175s.
> >> Nov 05 15:08:26 player0 systemd[682]: player_service.service: Scheduled
> restart job, restart counter is at 1.
> >> Nov 05 15:08:26 player0 systemd[682]: Stopped LiquidView Player Service.
> >> *Nov 05 15:08:26 player0 systemd[682]: Starting LiquidView Player
> Service...*
> >> Nov 05 15:08:27 player0 python3[1857]: Loading LiquidView Player
> version lvplayer at 9aa933d3c03040baa072d02e28942744b70d5c38
> >> Nov 05 15:08:27 player0 python3[1858]: 0:00:00.002161960  1858
> 0x560ca588c830 INFO                   vaapi
> gstvaapiutils.c:95:gst_vaapi_log: VA-API version 1.14.0
> >> Nov 05 15:08:27 player0 python3[1858]: 0:00:00.002183680  1858
> 0x560ca588c830 INFO                   vaapi
> gstvaapiutils.c:95:gst_vaapi_log: Trying to open
> /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so
> >
> > It then relaunches the service, and this time after Gst.init(None),
> > there are a whole raft of Vaapi calls before "Start init config", and
> > it succeeds.  Full log of my player service up until successful launch
> > attached.
> >
> > What's the best solution here? Seems pretty reliably unable to start
> > until the second try, or, maybe, 20 seconds after boot?
>
> My best guess is that it takes some time for the /dev nodes to appear and
> thus for the vaapi plugin to find the required resources to expose the
> plugin at all. Why that might be is pretty system-specific and might need
> some digging in.
>
> Cheers,
> Arun
>
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