mediabunny
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Pure TypeScript media toolkit for reading, writing, and converting media files, directly in the browser.
32 lines • 1.75 kB
TypeScript
/*!
* Copyright (c) 2025-present, Vanilagy and contributors
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/.
*/
import { AsyncMutex } from './misc';
import { Output, OutputAudioTrack, OutputSubtitleTrack, OutputTrack, OutputVideoTrack } from './output';
import { EncodedPacket } from './packet';
import { SubtitleCue, SubtitleMetadata } from './subtitles';
export declare abstract class Muxer {
output: Output;
mutex: AsyncMutex;
/**
* This field is used to synchronize multiple MediaStreamTracks. They use the same time coordinate system across
* tracks, and to ensure correct audio-video sync, we must use the same offset for all of them. The reason an offset
* is needed at all is because the timestamps typically don't start at zero.
*/
firstMediaStreamTimestamp: number | null;
constructor(output: Output);
abstract start(): Promise<void>;
abstract getMimeType(): Promise<string>;
abstract addEncodedVideoPacket(track: OutputVideoTrack, packet: EncodedPacket, meta?: EncodedVideoChunkMetadata): Promise<void>;
abstract addEncodedAudioPacket(track: OutputAudioTrack, packet: EncodedPacket, meta?: EncodedAudioChunkMetadata): Promise<void>;
abstract addSubtitleCue(track: OutputSubtitleTrack, cue: SubtitleCue, meta?: SubtitleMetadata): Promise<void>;
abstract finalize(): Promise<void>;
onTrackClose(track: OutputTrack): void;
private trackTimestampInfo;
protected validateAndNormalizeTimestamp(track: OutputTrack, timestampInSeconds: number, isKeyFrame: boolean): number;
}
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