mixing 0.0.4

Tools for video and audio editing

mixing

Tools for video and audio editing

To install: pip install mixing

Examples

mixing.video

VideoFrames: Dictionary-like access to video frames

VideoFrames provides a Mapping interface to access individual frames from a video file by index. Frames are returned as numpy arrays (BGR format).

from mv.util import VideoFrames

# Create frame accessor
frames = VideoFrames("my_video.mp4")

# Access frames by index
first_frame = frames[0]
last_frame = frames[-1]  # Negative indexing supported
middle_frame = frames[len(frames) // 2]

# Slice to get multiple frames (returns an iterator, not a list)
for frame in frames[10:50]:
    # Process frames 10 through 49
    pass

# Get every 5th frame
for frame in frames[::5]:
    # Process every 5th frame
    pass

save_frame: Extract and save video frames as images

Convenience function to extract a single frame from a video and save it as an image.

from mv.util import save_frame

# Save first frame with auto-generated filename (video_0.png)
save_frame("my_video.mp4")

# Save frame 100 as JPEG
save_frame("my_video.mp4", 100, saveas=".jpg")  # Saves as my_video_000100.jpg

# Save last frame to specific path
save_frame("my_video.mp4", -1, saveas="output/last_frame.png")

The saveas parameter accepts:

• None (default): Auto-generate filename in video's directory
• .ext: Use this extension with auto-generated filename
• Full path: Save to this specific location

write_subtitles_in_video

Write subtitles in a video.

Example usage:

>>> from mixing import write_subtitles_in_video
>>> output_path = write_subtitles_in_video("~/Downloads/some_video.mp4") 

Which is syntactic sugar for the more explicit:

>>> output_path = write_subtitles_in_video(
...     "~/Downloads/some_video.mp4", 
...     subtitles="~/Downloads/some_video.srt",
...     output_video="~/Downloads/some_video.mp4"
... )  

Further requirements

FFmpeg

Many of the tools also require ffmeg.

To install FFmpeg on your system, follow the instructions for your operating system below.

macOS

1. Using Homebrew:
   • Open Terminal.
   • Run the following command:

     brew install ffmpeg
     

For more details, visit the FFmpeg installation page for macOS.

Linux

1. Using the package manager:
   • For Debian/Ubuntu-based distributions, run:

     sudo apt update
     sudo apt install ffmpeg
     

   • For Fedora, run:

     sudo dnf install ffmpeg
     

   • For Arch Linux, run:

     sudo pacman -S ffmpeg
     

For more details, visit the FFmpeg installation page for Linux.

Windows

1. Using Windows builds:
   • Download the executable from FFmpeg for Windows.
   • Extract the downloaded files and add the bin directory to your system's PATH.

For more details, visit the FFmpeg installation page for Windows.