gstreamer : record a stream while playing

[Duchassin Frederic]

Hello all,


If i want to record a stream while playing, i think that I can use this 
pipeline :

gst-launch-1.0 filesrc location=/home/sefram/TS/Samsung.ts ! queue ! 
typefind ! tee name=t t. ! decodebin ! queue ! kmssink t. ! queue ! 
filesink location=/home/firsttry.ts


this pipeline should do this :


                                              /  [ decodebin | queue | 
kmssink ]           (playing_branch)
filesrc | queue | typefind | tee
                                              \  [ queue | filesink ]   
                               (recording_branch)


but it doesn't work the pipeline never start :

gst-launch-1.0 filesrc location=/home/sefram/TS/Samsung.ts ! queue ! 
typefind ! tee name=t t. ! decodebin ! queue ! kmssink t. ! queue ! 
filesink location=/home/firsttry.ts
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...

====== AIUR: 4.3.5 build on Jan 21 2019 17:47:10. ======
         Core: BLN_MAD-MMLAYER_MPG2PARSER_04.05.16  build on Sep 14 2017 
02:37:53
  file: /usr/lib/imx-mm/parser/lib_mpg2_parser_arm_elinux.so.3.1

whereas if I delete the recording branch, it works correctly.

root at cl-som-imx8:~# gst-launch-1.0 filesrc 
location=/home/sefram/TS/Samsung.ts ! queue ! typefind ! tee name=t t. ! 
decodebin ! queue ! kmssink t. ! queue ! filesink location=/home/firsttry.ts
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...

====== AIUR: 4.3.5 build on Jan 21 2019 17:47:10. ======
         Core: BLN_MAD-MMLAYER_MPG2PARSER_04.05.16  build on Sep 14 2017 
02:37:53
  file: /usr/lib/imx-mm/parser/lib_mpg2_parser_arm_elinux.so.3.1
^Chandling interrupt.
Interrupt: Stopping pipeline ...
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
Freeing pipeline ...
root at cl-som-imx8:~# gst-launch-1.0 filesrc 
location=/home/sefram/TS/Samsung.ts ! queue ! typefind ! tee name=t t. ! 
decodebin ! queue ! kmssink
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...

====== AIUR: 4.3.5 build on Jan 21 2019 17:47:10. ======
         Core: BLN_MAD-MMLAYER_MPG2PARSER_04.05.16  build on Sep 14 2017 
02:37:53
  file: /usr/lib/imx-mm/parser/lib_mpg2_parser_arm_elinux.so.3.1
------------------------
     Track 00 [video_0] Enabled
         Duration: 0:01:58.601811000
         Language: und
     Mime:
         video/x-h265, parsed=(boolean)true, alignment=(string)au, 
stream-format=(string)byte-stream, width=(int)3840, height=(int)2160, 
framerate=(fraction)30/1
------------------------
------------------------
     Track 01 [audio_0] Enabled
         Duration: 0:01:58.528000000
         Language: und
     Mime:
         audio/mpeg, mpegversion=(int)4, channels=(int)2, 
rate=(int)48000, bitrate=(int)192000
------------------------
====== VPUDEC: 4.3.5 build on Jan 21 2019 17:47:26. ======
         wrapper: 3.0.0 (VPUWRAPPER_ARM64_LINUX Build on Jan 21 2019 
17:02:05)
         vpulib: 1.1.1
         firmware: 1.1.1.65535

====== BEEP: 4.3.5 build on Jan 21 2019 17:47:16. ======
         Core: AAC decoder Wrapper  build on Dec  7 2017 18:13:51
  file: /us[ 1437.616914] alloc_contig_range: 42 callbacks suppressed
r/lib/imx-mm/audio-codec/wrap/lib[ 1437.616918] alloc_contig_range: 
[5eb00, 5f9d5) PFNs busy
_aacd_wrap_arm_elinux.so.3
  1437.631555] alloc_contig_range: [5ec00, 5fad5) PFNs busy
3mCODEC: BLN_MAD-MMCODECS_AACD_AR[ 1437.639743] alloc_contig_range: 
[5ec00, 5fbd5) PFNs busy
M_03.09.00_ARMV8  build on Sep 20[ 1437.648085] alloc_contig_range: 
[5ec00, 5fcd5) PFNs busy
  2017 15:02:50.
[ 1437.656130] alloc_contig_range: [5ec00, 5fdd5) PFNs busy
[ 1437.662854] alloc_contig_range: [5f000, 5fed5) PFNs busy
[ 1437.668731] alloc_contig_range: [5f000, 5ffd5) PFNs busy
[ 1437.674615] alloc_contig_range: [5f000, 600d5) PFNs busy
[ 1437.681140] alloc_contig_range: [5f000, 601d5) PFNs busy
[ 1437.687145] alloc_contig_range: [5f000, 602d5) PFNs busy
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock

If someone has an idea about the problem...


Thanks


Frederic

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