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Stream and receive video over RTSP

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# Zephyr
Zephyr is a simple RTSP library to stream and receive video over RTSP.

## Pre-requisites
- Python 3.8 or higher
- [FFmpeg](https://ffmpeg.org/) to encode and decode video
- [MediaMTX](https://github.com/bluenviron/mediamtx) as RTSP server

## Installation
The easiest way to install Zephyr is using pip:
```bash
$ pip install zephyr-rtsp
```
But you can also install Zephyr from source:
```bash
$ git clone https://github.com/bpradana/zephyr.git
$ cd zephyr
$ python setup.py install
```

## Usage
Zephyr has 2 main classes, `Stream` and `Client`. `Stream` is used to stream video over RTSP, while `Client` is used to receive video from RTSP stream.
### Stream
To stream video, you need to create a `Stream` object and call `send` with a frame. You can also call `end` to stop the stream.
```python
import cv2
from zephyr import Stream

if __name__ == "__main__":
  stream = Stream(
    url="rtsp://localhost:8554/test",
    resolution=(1280, 720),
    fps=30,
    bitrate="2M"
  )

cap = cv2.VideoCapture(0)
  while True:
    ret, frame = cap.read()
    stream.send(frame)
```
### Client
To receive video, you need to create a `Client` object and call `read` to get the frame. You can also call `release` to stop receiving video.
```python
import cv2
from zephyr import Client

if __name__ == "__main__":
  client = Client(url="rtsp://localhost:8554/test")

while True:
    ret, frame = client.read()
    cv2.imshow('frame', frame)

if cv2.waitKey(1) & 0xFF == ord("q"):
      client.release()
      break
```

## License
Zephyr is licensed under the [MIT License](LICENSE).

## Credits
- Zephyr uses [FFmpeg](https://ffmpeg.org/) to encode and decode video.
- The name Zephyr is inspired by [Zephyr](https://github.com/octavvia/zephyr) a video streaming project by [Octavia](https://github.com/octavvia).

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