Class FrameExtractionService

Сервис для извлечения кадров из видео

Index

Constructors

Methods

getInstance cacheFramesInIndexedDB cacheRecognitionFrames cacheSubtitleFrames clearFrameCache createPreviewElement drawFrameToCanvas extractRecognitionFrames extractSubtitleFrames extractTimelineFrames generateSmartTimelinePreviews getCachedFrames getCachedRecognitionFrames getCachedSubtitleFrames

Constructors

constructor

new FrameExtractionService(): FrameExtractionService
Returns FrameExtractionService

Methods

`Static`getInstance

getInstance(): FrameExtractionService
Returns FrameExtractionService
- Defined in src/features/video-compiler/services/frame-extraction-service.ts:55

cacheFramesInIndexedDB

cacheFramesInIndexedDB(
videoPath: string,
frames: TimelineFrame[],
): Promise<void>
Кэшировать кадры в IndexedDB для быстрого доступа
Parameters
- videoPath: string
- frames: TimelineFrame[]
Returns Promise<void>
- Defined in src/features/video-compiler/services/frame-extraction-service.ts:244

cacheRecognitionFrames

cacheRecognitionFrames(
videoPath: string,
frames: RecognitionFrame[],
): Promise<void>
Кэшировать результаты распознавания
Parameters
- videoPath: string
- frames: RecognitionFrame[]
Returns Promise<void>
- Defined in src/features/video-compiler/services/frame-extraction-service.ts:273

cacheSubtitleFrames

cacheSubtitleFrames(videoPath: string, frames: SubtitleFrame[]): Promise<void>
Кэшировать кадры субтитров
Parameters
- videoPath: string
- frames: SubtitleFrame[]
Returns Promise<void>
- Defined in src/features/video-compiler/services/frame-extraction-service.ts:301

clearFrameCache

clearFrameCache(): Promise<void>
Очистить весь кэш кадров

Returns Promise<void>
- Defined in src/features/video-compiler/services/frame-extraction-service.ts:329

createPreviewElement

createPreviewElement(frameData: string, timestamp: number): HTMLImageElement
Создать превью элемент из base64 данных
Parameters
- frameData: string
- timestamp: number
Returns HTMLImageElement
- Defined in src/features/video-compiler/services/frame-extraction-service.ts:179

drawFrameToCanvas

drawFrameToCanvas(
frameData: Uint8Array,
canvas: HTMLCanvasElement,
): Promise<void>
Создать canvas для отрисовки кадра
Parameters
- frameData: Uint8Array
- canvas: HTMLCanvasElement
Returns Promise<void>
- Defined in src/features/video-compiler/services/frame-extraction-service.ts:190

extractRecognitionFrames

extractRecognitionFrames(
    videoPath: string,
    purpose: ExtractionPurpose,
    interval?: number,
): Promise<RecognitionFrame[]>
Извлечь кадры для распознавания
Parameters
- videoPath: string
- purpose: ExtractionPurpose
- interval: number = 1.0
Returns Promise<RecognitionFrame[]>
- Defined in src/features/video-compiler/services/frame-extraction-service.ts:101

extractSubtitleFrames

extractSubtitleFrames(
videoPath: string,
subtitles: Subtitle[],
): Promise<SubtitleFrame[]>
Извлечь кадры для субтитров
Parameters
- videoPath: string
- subtitles: Subtitle[]
Returns Promise<SubtitleFrame[]>
- Defined in src/features/video-compiler/services/frame-extraction-service.ts:137

extractTimelineFrames

extractTimelineFrames(
    videoPath: string,
    duration: number,
    interval?: number,
    maxFrames?: number,
): Promise<TimelineFrame[]>
Извлечь кадры для timeline
Parameters
- videoPath: string
- duration: number
- interval: number = 1.0
- OptionalmaxFrames: number
Returns Promise<TimelineFrame[]>
- Defined in src/features/video-compiler/services/frame-extraction-service.ts:65

generateSmartTimelinePreviews

generateSmartTimelinePreviews(
    videoPath: string,
    duration: number,
    containerWidth: number,
    frameWidth?: number,
): Promise<TimelineFrame[]>
Генерировать превью для timeline с умным выбором кадров
Parameters
- videoPath: string
- duration: number
- containerWidth: number
- frameWidth: number = 160
Returns Promise<TimelineFrame[]>
- Defined in src/features/video-compiler/services/frame-extraction-service.ts:222

getCachedFrames

getCachedFrames(videoPath: string): Promise<TimelineFrame[]>
Получить кэшированные кадры из IndexedDB
Parameters
- videoPath: string
Returns Promise<TimelineFrame[]>
- Defined in src/features/video-compiler/services/frame-extraction-service.ts:257

getCachedRecognitionFrames

getCachedRecognitionFrames(videoPath: string): Promise<RecognitionFrame[]>
Получить кэшированные результаты распознавания
Parameters
- videoPath: string
Returns Promise<RecognitionFrame[]>
- Defined in src/features/video-compiler/services/frame-extraction-service.ts:285

getCachedSubtitleFrames

getCachedSubtitleFrames(videoPath: string): Promise<SubtitleFrame[]>
Получить кэшированные кадры субтитров
Parameters
- videoPath: string
Returns Promise<SubtitleFrame[]>
- Defined in src/features/video-compiler/services/frame-extraction-service.ts:313