Problems in H.264 encoding and decoding video using MINISASTOCSI in imx8mpevk

kenizgandhi — Fri, 25 Jun 2021 18:56:07 GMT

Hello,

I am able to display the video using waylandsink and autovideosink commands:

gst-launch-1.0 v4l2src device=/dev/video1 ! autovideosink

gst-launch-1.0 v4l2src device=/dev/video1 ! video/x-raw,format=YUY2,width=1920,height=1080 ! queue max-size-time=0 ! waylandsink enable-tile=true sync=false

I am using imx8mpevk board.

root@imx8mpevk:/# uname -r
5.10.9-1.0.0+g32513c25d8c7

But I am unable to perform H.264 encoding and decoding of video. I tried the below commands:

root@imx8mpevk:~# gst-launch-1.0 v4l2src device=/dev/video1 ! video/x-raw,width=640,height=480 ! \
> v4l2h264enc extra-controls="controls,h264_entropy_mode=0,video_bitrate=245000;" ! \
> h264parse ! v4l2h264dec ! queue ! waylandsink sync=false
WARNING: erroneous pipeline: no element "v4l2h264enc"

root@imx8mpevk:/# gst-launch-1.0 videotestsrc ! video/x-raw, format=I420, width=640, height=480 ! vpuenc_h264 ! filesink location=test.mp4
Setting pipeline to PAUSED ...
====== VPUENC: 4.6.0 build on Jan 29 2021 08:22:32. ======
wrapper: 3.0.0 (VPUWRAPPER_ARM64_LINUX Build on Feb 18 2021 02:40:50)
vpulib: 1.1.1
firmware: 1.1.1.43690
Pipeline is PREROLLING ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
^Chandling interrupt.
Interrupt: Stopping pipeline ...
Execution ended after 0:00:08.299120750
Setting pipeline to NULL ...
Freeing pipeline ...
root@imx8mpevk:/# gst-launch-1.0 filesrc location=test.mp4 ! qtdemux name=d d.video_0 ! queue ! h264parse ! vpudec ! queue ! waylandsink
Setting pipeline to PAUSED ...
====== VPUDEC: 4.6.0 build on Jan 29 2021 08:22:32. ======
wrapper: 3.0.0 (VPUWRAPPER_ARM64_LINUX Build on Feb 18 2021 02:40:50)
vpulib: 1.1.1
firmware: 1.1.1.43690
Pipeline is PREROLLING ...
ERROR: from element /GstPipeline:pipeline0/GstQTDemux:d: This file is invalid and cannot be played.
Additional debug info:
../git/gst/isomp4/qtdemux.c(535): gst_qtdemux_pull_atom (): /GstPipeline:pipeline0/GstQTDemux:d:
atom has bogus size 9911666659956916224
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
ERROR: from element /GstPipeline:pipeline0/GstQTDemux:d: Internal data stream error.
Additional debug info:
../git/gst/isomp4/qtdemux.c(6545): gst_qtdemux_loop (): /GstPipeline:pipeline0/GstQTDemux:d:
streaming stopped, reason error (-5)
ERROR: pipeline doesn't want to preroll.
ERROR: from element /GstPipeline:pipeline0/GstQTDemux:d: This file contains no playable streams.
Additional debug info:
../git/gst/isomp4/qtdemux.c(489): gst_qtdemux_post_no_playable_stream_error (): /GstPipeline:pipeline0/GstQTDemux:d:
no known streams found
ERROR: pipeline doesn't want to preroll.
Freeing pipeline ...

root@imx8mpevk:~# gst-launch-1.0 videotestsrc device=/dev/video1 ! video/x-raw, format=I420, width=640, height=480 ! vpuenc_h264 ! filesink location=test.mp4
WARNING: erroneous pipeline: no property "device" in element "videotestsrc0"

I would be obliged if you can help me solve this issue.

If you need any further information, feel free to ask me.

Thank You.

Re: Problems in H.264 encoding and decoding video using MINISASTOCSI in imx8mpevk

kenizgandhi — Sat, 26 Jun 2021 09:03:12 GMT

Hello, I got the output. In case if anyone wants, I am writing the commands below. Hope it helps.

gst-launch-1.0 v4l2src device=/dev/video1 num-buffers=1000 ! video/x-raw,width=1920,height=1080 ! vpuenc_h264 ! avimux ! filesink location=test1_h264.avi
gst-launch-1.0 filesrc location=test1_h264.avi ! queue ! h264parse ! vpudec ! imxvideoconvert_g2d ! queue ! autovideosink

// dont use qtdemux if you are decoding h264 stream. use qtdemux when you are decoding mov or mp4 files.

topic Problems in H.264 encoding and decoding video using MINISASTOCSI in imx8mpevk in i.MX Processors

Problems in H.264 encoding and decoding video using MINISASTOCSI in imx8mpevk

Re: Problems in H.264 encoding and decoding video using MINISASTOCSI in imx8mpevk