# Using Blue Robotics Low LIght USB cameras in ROV system

**URL:** https://discuss.bluerobotics.com/t/using-blue-robotics-low-light-usb-cameras-in-rov-system/2097
**Category:** General Discussion
**Created:** [January 9, 2018, 6:55pm UTC](https://discuss.bluerobotics.com/t/using-blue-robotics-low-light-usb-cameras-in-rov-system/2097 "2018-01-09T18:55:13Z")
**Posts on this page:** 1
**Showing post:** 20

<div class="post-metadata">

### Author: ![danzimmerman](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/danzimmerman/32/2209_2.png) [@danzimmerman](https://discuss.bluerobotics.com/u/danzimmerman)
#### Post date: [February 15, 2018, 7:03pm UTC](https://discuss.bluerobotics.com/t/using-blue-robotics-low-light-usb-cameras-in-rov-system/2097/20 "2018-02-15T19:03:00Z")

</div>

I’m trying to use gstreamer to stream from the low-light USB webcam to QGroundControl with the following command:

```auto
gst-launch-1.0 -v v4l2src device=$DEVICE do-timestamp=true ! video/x-h264, width=$WIDTH, height=$HEIGHT, framerate=$FRAMERATE/1 ! h264parse ! queue ! rtph264pay config-interval=10 pt=96 ! udpsink host=192.168.1.222 port=5600

```

(already have WIDTH=1920, HEIGHT=1080, FRAMERATE=15, DEVICE=/dev/video1, with video1 verified to be the H.264 source)

It fails quickly with the following error:

```auto
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Video device did not suggest any buffer size.
Additional debug info:
gstv4l2object.c(3417): gst_v4l2_object_decide_allocation (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0
Execution ended after 0:00:00.073182406

```

Using Raspbian Jessie on a Raspberry Pi 3 Model B.

(The older version of Raspbian is in play because I hope to install ROS Kinetic)

Any ideas on how to fix this?

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