i.MX ProcessorsのトピックRe: Multiple Video Display on Single 5 Inch Screen using NXP i.MX7D

Multiple Video Display on Single 5 Inch Screen using NXP i.MX7D

atulbabanchavan — Mon, 17 Sep 2018 07:29:34 GMT

I am exploring NXP i.MX7D starter kit. I have successfully installed yocto image "pico-imx7_pico-pi_yocto-2.0-qt5-fb_TTL_LCD-800x480_20170411.zip" on the board.I want to use 5 inch screen came with kit for multiple displays. I am using gstreamer for displaying and streaming. MIPI Camera (OV5645) came with kit is used.

I am able to display camera output locally using the following command:
gst-launch-1.0 imxv4l2src device=/dev/video1 ! imxv4l2sink

I am able stream camera output and loopback locally using following commands:
SENDER:
gst-launch-1.0 v4l2src device=/dev/video1 ! video/x-raw,width=640,height=480 ! jpegenc ! rtpjpegpay ! udpsink host=127.0.0.1 port=5001
RECEIVER:
gst-launch-1.0 udpsrc port=5001 ! application/x-rtp,encoding-name=JPEG, payload=26 ! rtpjpegdepay ! jpegdec ! autovideosink

I want to display my camera output locally and also I want to display videos which I will receive over ethernet from other devices over network. So basically I should able to see multiple videos (2 or 3) on my small 5 inch display.
When I am trying some commands from i.MX Linux userguide, I am getting errors like: no-element "overlaysink","vpudec".
Can anyone provide me example on this.
I am new to YOCTO and NXP. Please guide me on this line.

Re: Multiple Video Display on Single 5 Inch Screen using NXP i.MX7D

atulbabanchavan — Fri, 21 Sep 2018 11:26:03 GMT

can anyone please guide me on the above topic.

Re: Multiple Video Display on Single 5 Inch Screen using NXP i.MX7D

Yuri — Sat, 22 Sep 2018 13:52:35 GMT

Hello,

Use sections 7.3.1.6 (Video playback to multiple displays) and 7.3.1.6.3 (Multiple videos overlay)

of "i.MX_Linux_User's_Guide.pdf" of the recent NXP Linux BSP.

https://www.nxp.com/webapp/Download?colCode=L4.9.88_2.0.0_LINUX_DOCS

Note, i.MX7 does not suport in hardware video codecs. No VPU. Only software approach may be used.

Regards,

Yuri.

Re: Multiple Video Display on Single 5 Inch Screen using NXP i.MX7D

atulbabanchavan — Tue, 25 Sep 2018 06:36:35 GMT

Hi Yuri.

Thank you for your reply.

The linked mentioned by you is not opening.

I used recent "i.MX_Linux_User's_Guide.pdf", following are the commands I tried and its output:

7.3.1.2 Video-only playback

$GSTL filesrc location=test.mp4 typefind=true
! video/quicktime ! aiurdemux ! queue max-size-time=0
! avdec_h264 ! autovideosink

erroneous pipeline: no element "avdec_h264"

7.3.1.6.3 Multiple videos overlay

gst-launch-1.0 playbin uri=file://$FILE1
video-sink="overlaysink overlay-width=512 overlay-height=384"

erroneous pipeline: could not set property "video-sink" in element "playbin0" to "overlaysink overlay-width=512 overlay-height=384"

I think complete gstreamer package is not installed in this Yocto release. If this is the case, then how to add remaining gstreamer packages ? Is there any way to install missing packages like we install in ubuntu using apt-get? Or we have to build yocto image from scratch?

Can you please guide me on how to do this.

Thank You.

Atul.

Re: Multiple Video Display on Single 5 Inch Screen using NXP i.MX7D

atulbabanchavan — Mon, 01 Oct 2018 04:15:13 GMT

Can anyone please guide me in this line.....

Re: Multiple Video Display on Single 5 Inch Screen using NXP i.MX7D

atulbabanchavan — Fri, 02 Nov 2018 06:38:34 GMT

Hi NXP Community,

Is it the right forum where I am posting my doubts? Can anyone please provide me link where I can get more details regarding the issues I am discussing above.