Gstreamer video file corrupted after shutdown Jetson Nano

Autonomous Machines Jetson & Embedded Systems Jetson Nano
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1

Hi, I’m currently saving the stream of 4 IP camera with this command :

gst-launch-1.0 nvcompositor -e background-w=2560 background-h=1440 name=mix     sink_0::xpos=0 sink_0::ypos=0 sink_0::width=1280 sink_0::height=720 sink_1::xpos=1280 sink_1::ypos=0 sink_1::width=1280 sink_1::height=720 sink_2::xpos=0 sink_2::ypos=720 sink_2::width=1280 sink_2::height=720 sink_3::xpos=1280 sink_3::ypos=720 sink_3::width=1280 sink_3::height=720        ! 'video/x-raw(memory:NVMM),format=RGBA,width=2560,height=1440' ! nvvidconv ! 'video/x-raw(memory:NVMM),format=NV12' ! nvv4l2h264enc insert-vui=1 profile=2     ! h264parse ! video/x-h264,width=2560,height=1440,framerate=5/1 ! matroskamux  ! multifilesink location=/home/xavier/Documents/data/mosaic/2022-03-31_18:07:54%d.mp4 next-file=4 max-file-size=200000000 sync=false      rtspsrc location=rtsp://192.168.1.201:554/1/h264major ! application/x-rtp,media=video,encoding-name=H264 ! rtph264depay ! h264parse ! nvv4l2decoder ! nvvidconv ! 'video/x-raw(memory:NVMM),format=NV12,width=1280,height=720,pixel-aspect-ratio=1/1' ! queue ! mix.sink_0 rtspsrc location=rtsp://192.168.1.202:554/1/h264major ! application/x-rtp,media=video,encoding-name=H264 ! rtph264depay ! h264parse ! nvv4l2decoder ! nvvidconv ! 'video/x-raw(memory:NVMM),format=NV12,width=1280,height=720,pixel-aspect-ratio=1/1' ! queue ! mix.sink_1 rtspsrc location=rtsp://192.168.1.203:554/1/h264major ! application/x-rtp,media=video,encoding-name=H264 ! rtph264depay ! h264parse ! nvv4l2decoder ! nvvidconv ! 'video/x-raw(memory:NVMM),format=NV12,width=1280,height=720,pixel-aspect-ratio=1/1' ! queue ! mix.sink_2 rtspsrc location=rtsp://192.168.1.204:554/1/h264major ! application/x-rtp,media=video,encoding-name=H264 ! rtph264depay ! h264parse ! nvv4l2decoder ! nvvidconv ! 'video/x-raw(memory:NVMM),format=NV12,width=1280,height=720,pixel-aspect-ratio=1/1' ! queue ! mix.sink_3

The file can be read normally if I exit with Ctrl+C but my problem is that when my Jetson shutdown (in my case I need it to happen) the video file is corrupted. The file has a size of 0 byte.

Is there a way to properly save the file when the jetson shutdown ?
Thanks

2

how exactly are you shutting down the Nano?

3

@user87221
There is a relay that controls the power supply to the jetson.
I cut the relay simply.

4

See 2.5.2 Power Down of the datsheet:

In a shutdown event the Jetson module asserts SHUTDOWN_REQ*. The SHUTDOWN_REQ* must be serviced by the carrier
board to toggle POWER_EN from high to low, even in cases of sudden power loss. The Jetson module starts the power off
sequence when POWER_EN is deasserted; SYS_RESET* is asserted by the Jetson module, allowing the carrier board to put
any components into a known state and power down.

not sure that that is the issue. but it is my first thought

5

So your idea is to detect when the shutdown event is detected to cancel the gstreamer properly ?

6

well that sounds like a good idea. but my idea originally was to handle the shutdown process properly. That is assuming that you are using a custom carrier board though. Are you using a custom carrier board, or are you using the devkit?

7

I’m using the dev kit, how to you handle the shutdown properly with the relay ?

8

i’m sure the dev kit handles it properly. My question was assuming you were using a custom carrier board. sorry, disregard

10

Hi,
Please use splitmuxsink:
splitmuxsink

And set matroskamux. Besides, it is better to insert SPS/PPS at IDR frames, and set IDR interval to a small value like 30 or 15.

11

Thanks for your answer.
I did like this but it doesn’t work :

gst-launch-1.0 nvcompositor -e background-w=2560 background-h=1440 name=mix sink_0::xpos=0 sink_0::ypos=0 sink_0::width=1280 sink_0::height=720 sink_1::xpos=1280 sink_1::ypos=0 sink_1::width=1280 sink_1::height=720 sink_2::xpos=0 sink_2::ypos=720 sink_2::width=1280 sink_2::height=720 sink_3::xpos=1280 sink_3::ypos=720 sink_3::width=1280 sink_3::height=720 ! ‘video/x-raw(memory:NVMM),format=RGBA,width=2560,height=1440’ ! nvvidconv ! ‘video/x-raw(memory:NVMM),format=NV12’ ! nvv4l2h264enc insert-vui=1 profile=2 ! h264parse ! video/x-h264,width=2560,height=1440,framerate=5/1 ! splitmuxsink muxer=matroskamux location=/home/xavier/Documents/data/mosaic/2022-04-01_11:05:16.mp4 max-size-time=30000000000 sync=false

Is it like this or there is another way to do it ?

12

Hi,
Please enable SPS/PPS at IDR frames and set small IDR interval. If it still does not work, may try to save to single file:

... ! matroskamux ! filesink location=a.mkv
13

I have already tried at the beginning this command
! matroskamux ! filesink location=a.mkv
but it didn’t work.
I don’t understand when you say to enable SPS/PPS. Can you give me example to do it ?
Thanks !

14

@DaneLLL
At the end, my command where I record into multiples files doesn’t work either. (in my first post)
The first file is correct but the the others don’t have a fix duration. The header is not correct I think.

And do you have an idea to correctly save the video file when the jetson is suddenly shutdown ?
Thanks !

15

Hi
Please set the properties:

... ! nvv4l2h264enc insert-sps-pps=1 idrinterval=15 ! ...
1 Like
16

Thanks a lot it works !

1 Like
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