FFMPEGDemo Readme

Overview

This repository contains code for an iOS app that utilizes FFmpegKit to perform audio and video conversion operations. The app includes a ConverterViewModel class responsible for handling the conversion logic and a ViewController class to demonstrate the functionality.

ConverterViewModel

Overview

The ConverterViewModel class manages the conversion process using FFmpegKit. It includes methods for converting audio from an input URL and adding a watermark to a video. The progress, percentage, and completion URL are published properties, allowing the UI to react to changes during the conversion process.

bitrate Enumeration

The bitrate enumeration defines different bitrates for audio conversion.

Public Properties

• completedAtUrl: Published property for the completion URL.
• progressTime: Published property for the progress time.
• percentage: Published property for the conversion percentage.
• progress: Published property for the overall progress.
• cancellables: Set of Combine cancellables.

Public Methods

• convertAudioFrom(url:quality:): Converts audio from the input URL with the specified bitrate.
• addWatermarkToVideo(video:watermark:): Adds a watermark to the video from the input URLs.
• cancelConvertProgress(): Cancels the ongoing conversion process.

Private Methods

• createAudioOutputPath(from:): Creates an output path for converted audio.
• createVideoOutputPath(from:): Creates an output path for converted video.
• checkFileExistance(in:): Checks and removes existing files.
• calculateTotalTime(url:): Calculates the total duration of the input audio file.
• calculateProgress(currentTime:): Calculates the conversion progress based on the current time.

ViewController

Overview

The ViewController class serves as the main view controller for the app. It includes UI elements such as a progress view and a label to display the conversion percentage. The class initializes a ConverterViewModel instance, triggers a conversion from a local file on viewDidLoad, and binds UI elements to the conversion progress.

Public Properties

• progressView: UIProgressView to visualize the conversion progress.
• progressPercentageLabel: UILabel to display the conversion percentage.

Private Properties

• convertViewModel: Instance of ConverterViewModel for handling conversion logic.

Private Methods

• ConvertLocalFile(): Initiates the conversion of a local video file with a watermark.
• bindProgress(): Binds the UI progress view to the conversion progress.
• bindPercentage(): Binds the UI label to the conversion percentage.
• bindCompletedProgress(): Binds the UI to display the completed video.

Usage

To use this code, follow these steps:

1. Integrate the code into your iOS project.
2. Ensure FFmpegKit is included in your project.
3. Initialize a ConverterViewModel instance.
4. Trigger audio or video conversion using the appropriate methods.
5. Bind UI elements to the published properties for real-time updates.

Feel free to customize the code based on your specific requirements.

Dependencies

• FFmpegKit: FFmpeg library for iOS.

License

This code is licensed under the MIT License.