About preview with 1080p@30fps with gstreamer 1.x

[keitanagashima]

Dear All,

I have a question about preview function with FullHD (1080p) @30fps in i.MX6DQ.

I tested the below command with L3.10.18 (gstreamer 0.1x) and succeeded the preview function.

$ gst-launch -v mfw_v4lsrc device=/dev/video1 capture-mode=0 ! mfw_v4lsink disp-width=1920 disp-height=1080

But, in case of L3.14.28 (gstreamer 1.x), the frame rate is too low (about fps (11.091fps)).

$ gst-launch-1.0 imxv4l2src device=/dev/video1 ! 'video/x-raw,format=(string)UYVY,width=1920,height=1080,framerate=(fraction)30/1' ! imxv4l2sink

==X-11 result==

Total showed frames (206), playing for (0:00:18.573332669), fps (11.091).

==fb result==

Total showed frames (203), playing for (0:00:18.273803669), fps (11.109).

Could you tell me the way of preview with 1080p@30fps to HDMI display in gstreamer 1.x?

Best Regards,

Keita

[antonpavlov]

Hi Keita

In case of L3.10.18/gstreamer 0.1x, you are receiving compressed data (MJPEG). In the second case -  L3.14.28/gstreamer 1.x, you switched camera to raw format (UYVY) which requires more resources from the board. So, if you go back to MJPEG, I suppose, you should obtain the frame rate similar to 30.

Regards,

Anton

[joanxie]

did you try the unit test? has the same issue?

[keitanagashima]

Hi Guanqiong Xie,

Thank you for your reply.

> did you try the unit test? has the same issue?

I haven't tested it by unit test yet.

i.MX6 worked correctly in gstreamer 0.x.

So, I understood that i.MX6 can preview 1080p@30fps.

But, my customer will use the gstreamer 1.x.

Could you tell me the way of preview with 1080p@30fps to HDMI display in gstreamer 1.x?

Best Regards,

Keita

[joanxie]

it seems your bsp version is too old, pls upgrate it, gstreamer 1.0 should have better performance than gstreamer 0.1

[keitanagashima]

Dear Guanqiong Xie,

>it seems your bsp version is too old, pls upgrate it, gstreamer 1.0 should have better performance than gstreamer 0.1

I didn't understand it. Please see my 1st topic.

I tested with L3.10.18 (gstreamer 0.1x) and succeeded the preview function (about 30fps).

But, in case of L3.14.28 (gstreamer 1.x), the frame rate is too low (about fps (11.091fps)).

Best Regards,

Keita

[joanxie]

sorry for my misundersanding, for your second case, pls try to use overlaysink, any improvment?