<html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body text="#000000" bgcolor="#FFFFFF"> 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@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@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 </body> </html>