Adding wattermarks to a video

This stage simply edits a video on the fly to add some text and show the modified video on the screen.

Requirements

Pipeless: Check the installation guide.
Python NumPy and Pillow packages. Install them by running:

pip install numpy pillow

Run the example

Create an empty Pipeless project

pipeless init my-project --template empty # Using the empty template we avoid the interactive shell
cd my-project

Feel free to change my-project by any name you want.

Download the stage folder

wget -O - https://github.com/pipeless-ai/pipeless/archive/main.tar.gz | tar -xz --strip=2 "pipeless-main/examples/wattermark"

Update the XML file path inside `init.py`

Update the line highlighted below to the actual path in your system (use an absolute path):

process.py

def hook(frame, context):
     pil_image = Image.fromarray(frame['modified'])
     text = "Hello pipeless!"
     font = ImageFont.truetype(font='/home/path/pipeless/examples/wattermark/font.ttf', size=60)
     text_color = (255, 0, 255)

Start Pipeless

The following command leaves Pipeless running on the current terminal

pipeless start --stages-dir .

Provide a stream

Open a new terminal and run:

pipeless add stream --input-uri "v4l2" --output-uri "screen" --frame-path "wattermark"

This command assumes you have a webcam available, if you don't just change the input URI.

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