# Change RTSP streaming parameters

## 1. Overview

* This is a method to allow user can change the parameter of RTSP streaming from the Zio payload.
* Software: v2.0.1.3 or higher, [download link*.*](https://github.com/Gremsy/Zio_SoM_Firmware/releases/latest)

## **2. How to use**

* Create a "rtsp\_stream.json" file to the top folder on the micro SDcard then plug into the Zio payloads.
* Reboot to apply the settings.
* The parameter will be default if the Zio payload can not detect the config file on the micro SDcard.
* The default settings is:
  * Resolution: 1280x720
  * Bitrate: 4000000 (4M)
  * Port: 8554
  * Mount point: Zio
  * Autoconnect: Enable

## **3. The content of rtsp\_stream.txt file.**

```
{
    "resolution": "1",
    "bitrate": "4000000",
    "port": "8554",
    "mount point": "zio",
    "autoconnect": "enable"
}
```

> ***Note:***
>
> * "resolution": change RTSP resolution output ***(current not support).***
> * "bitrate": change RTSP bitrate output (unit: bit).
> * "port": change port to RTSP URL (number).
> * "mount point": change mount point to RTSP URL (no spaces, no special characters).
> * "autoconnect": enable/disable request video stream information from autopilot.

## **4. Test command with gStreamer.**

```
gst-launch-1.0 rtspsrc latency=0 location=rtsp://<zio_ip>:<zio_port>/<zio_mount_point> ! rtph264depay ! decodebin ! videoconvert ! autovideosink sync=false
```

* Change the latency to 100 / 500/ 1000 then see the difference.

## **5. Convert dos2unix**

* If you create a rtsp\_stream.json on a Windows machine, it must be converted to Unix system file style.&#x20;
* Please use the below tools to convert the file before putting it onto the micro SDcard.

```
https://toolslick.com/conversion/text/dos-to-unix
```