forked from vgaNAR6ta/drags-and-nerds
add: PASSAGE V1 COM OFFICIELLE
préparation du template intégration du fond animé fusion du style background et style pcp
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declare type TransformationMatrix = [number, number, number, number, number, number, number, number, number];
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declare interface VideoOptions {
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/**
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* The codec of the encoded video chunks.
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*/
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codec: 'avc' | 'hevc' | 'vp9' | 'av1',
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/**
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* The width of the video in pixels.
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*/
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width: number,
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/**
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* The height of the video in pixels.
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*/
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height: number,
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/**
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* The clockwise rotation of the video in degrees, or a transformation matrix.
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*/
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rotation?: 0 | 90 | 180 | 270 | TransformationMatrix
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}
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declare interface AudioOptions {
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/**
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* The codec of the encoded audio chunks.
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*/
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codec: 'aac' | 'opus',
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/**
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* The number of audio channels in the audio track.
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*/
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numberOfChannels: number,
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/**
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* The sample rate of the audio track in samples per second per channel.
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*/
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sampleRate: number
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}
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/**
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* Describes the properties used to configure an instance of `Muxer`.
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*/
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declare type MuxerOptions<T extends Target> = {
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/**
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* Specifies what happens with the data created by the muxer.
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*/
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target: T,
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/**
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* When set, declares the existence of a video track in the MP4 file and configures that video track.
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*/
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video?: VideoOptions,
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/**
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* When set, declares the existence of an audio track in the MP4 file and configures that audio track.
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*/
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audio?: AudioOptions,
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/**
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* Controls the placement of metadata in the file. Placing metadata at the start of the file is known as "Fast
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* Start", which results in better playback at the cost of more required processing or memory.
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*
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* Use `false` to disable Fast Start, placing the metadata at the end of the file. Fastest and uses the least
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* memory.
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*
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* Use `'in-memory'` to produce a file with Fast Start by keeping all media chunks in memory until the file is
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* finalized. This produces a high-quality and compact output at the cost of a more expensive finalization step and
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* higher memory requirements.
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*
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* Use `'fragmented'` to place metadata at the start of the file by creating a fragmented "fMP4" file. In a
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* fragmented file, chunks of media and their metadata are written to the file in "fragments", eliminating the need
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* to put all metadata in one place. Fragmented files are useful for streaming, as they allow for better random
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* access. Furthermore, they remain lightweight to create even for very large files, as they don't require all media
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* to be kept in memory. However, fragmented files are not as widely supported as regular MP4 files.
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*
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* Use an object to produce a file with Fast Start by reserving space for metadata when muxing starts. In order to
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* know how much space needs to be reserved, you'll need to tell it the upper bound of how many media chunks will be
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* muxed. Do this by setting `expectedVideoChunks` and/or `expectedAudioChunks`.
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*/
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fastStart: false | 'in-memory' | 'fragmented' | {
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expectedVideoChunks?: number,
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expectedAudioChunks?: number
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},
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/**
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* Specifies how to deal with the first chunk in each track having a non-zero timestamp. In the default strict mode,
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* timestamps must start with 0 to ensure proper playback. However, when directly piping video frames or audio data
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* from a MediaTrackStream into the encoder and then the muxer, the timestamps are usually relative to the age of
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* the document or the computer's clock, which is typically not what we want. Handling of these timestamps must be
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* set explicitly:
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*
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* Use `'offset'` to offset the timestamp of each video track by that track's first chunk's timestamp. This way, it
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* starts at 0.
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*
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* Use `'cross-track-offset'` to offset the timestamp of _both_ tracks by whichever track's first chunk timestamp is
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* earliest. This is designed for cases when both tracks' timestamps come from the same clock source.
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*/
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firstTimestampBehavior?: 'strict' | 'offset' | 'cross-track-offset'
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};
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declare type Target = ArrayBufferTarget | StreamTarget | FileSystemWritableFileStreamTarget;
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/** The file data will be written into a single large buffer, which is then stored in `buffer` upon finalization.. */
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declare class ArrayBufferTarget {
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buffer: ArrayBuffer;
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}
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/**
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* This target defines callbacks that will get called whenever there is new data available - this is useful if
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* you want to stream the data, e.g. pipe it somewhere else.
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*
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* When using `chunked: true` in the options, data created by the muxer will first be accumulated and only written out
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* once it has reached sufficient size, using a default chunk size of 16 MiB. This is useful for reducing the total
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* amount of writes, at the cost of latency.
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*/
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declare class StreamTarget {
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constructor(options: {
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onData?: (data: Uint8Array, position: number) => void,
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chunked?: boolean,
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chunkSize?: number
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});
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}
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/**
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* This is essentially a wrapper around a chunked `StreamTarget` with the intention of simplifying the use of this
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* library with the File System Access API. Writing the file directly to disk as it's being created comes with many
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* benefits, such as creating files way larger than the available RAM.
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*/
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declare class FileSystemWritableFileStreamTarget {
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constructor(
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stream: FileSystemWritableFileStream,
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options?: { chunkSize?: number }
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);
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}
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/**
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* Used to multiplex video and audio chunks into a single MP4 file. For each MP4 file you want to create, create
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* one instance of `Muxer`.
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*/
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declare class Muxer<T extends Target> {
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target: T;
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/**
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* Creates a new instance of `Muxer`.
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* @param options Specifies configuration and metadata for the MP4 file.
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*/
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constructor(options: MuxerOptions<T>);
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/**
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* Adds a new, encoded video chunk to the MP4 file.
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* @param chunk The encoded video chunk. Can be obtained through a `VideoEncoder`.
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* @param meta The metadata about the encoded video, also provided by `VideoEncoder`.
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* @param timestamp Optionally, the presentation timestamp to use for the video chunk. When not provided, it will
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* use the one specified in `chunk`.
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* @param compositionTimeOffset Optionally, the composition time offset (i.e. presentation timestamp minus decode
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* timestamp) to use for the video chunk. When not provided, it will be zero.
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*/
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addVideoChunk(
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chunk: EncodedVideoChunk,
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meta?: EncodedVideoChunkMetadata,
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timestamp?: number,
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compositionTimeOffset?: number
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): void;
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/**
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* Adds a new, encoded audio chunk to the MP4 file.
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* @param chunk The encoded audio chunk. Can be obtained through an `AudioEncoder`.
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* @param meta The metadata about the encoded audio, also provided by `AudioEncoder`.
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* @param timestamp Optionally, the timestamp to use for the audio chunk. When not provided, it will use the one
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* specified in `chunk`.
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*/
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addAudioChunk(chunk: EncodedAudioChunk, meta?: EncodedAudioChunkMetadata, timestamp?: number): void;
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/**
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* Adds a raw video chunk to the MP4 file. This method should be used when the encoded video is not obtained
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* through a `VideoEncoder` but through some other means, where no instance of `EncodedVideoChunk`is available.
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* @param data The raw data of the video chunk.
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* @param type Whether the video chunk is a keyframe or delta frame.
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* @param timestamp The timestamp of the video chunk.
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* @param duration The duration of the video chunk.
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* @param meta Optionally, any encoder metadata.
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* @param compositionTimeOffset The composition time offset (i.e. presentation timestamp minus decode timestamp) of
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* the video chunk.
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*/
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addVideoChunkRaw(
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data: Uint8Array,
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type: 'key' | 'delta',
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timestamp: number,
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duration: number,
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meta?: EncodedVideoChunkMetadata,
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compositionTimeOffset?: number
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): void;
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/**
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* Adds a raw audio chunk to the MP4 file. This method should be used when the encoded audio is not obtained
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* through an `AudioEncoder` but through some other means, where no instance of `EncodedAudioChunk`is available.
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* @param data The raw data of the audio chunk.
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* @param type Whether the audio chunk is a keyframe or delta frame.
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* @param timestamp The timestamp of the audio chunk.
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* @param duration The duration of the audio chunk.
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* @param meta Optionally, any encoder metadata.
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*/
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addAudioChunkRaw(
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data: Uint8Array,
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type: 'key' | 'delta',
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timestamp: number,
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duration: number,
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meta?: EncodedAudioChunkMetadata
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): void;
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/**
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* Is to be called after all media chunks have been added to the muxer. Make sure to call and await the `flush`
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* method on your `VideoEncoder` and/or `AudioEncoder` before calling this method to ensure all encoding has
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* finished. This method will then finish up the writing process of the MP4 file.
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*/
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finalize(): void;
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}
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declare global {
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let Mp4Muxer: typeof Mp4Muxer;
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}
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export {
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Muxer,
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MuxerOptions,
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ArrayBufferTarget,
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StreamTarget,
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FileSystemWritableFileStreamTarget,
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TransformationMatrix
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};
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export as namespace Mp4Muxer;
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Load diff
@@ -0,0 +1,5 @@
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"use strict";var Mp4Muxer=(()=>{var Ne=Object.defineProperty;var dt=Object.getOwnPropertyDescriptor;var pt=Object.getOwnPropertyNames;var ct=Object.prototype.hasOwnProperty;var Tt=(t,e)=>{for(var s in e)Ne(t,s,{get:e[s],enumerable:!0})},Ct=(t,e,s,r)=>{if(e&&typeof e=="object"||typeof e=="function")for(let n of pt(e))!ct.call(t,n)&&n!==s&&Ne(t,n,{get:()=>e[n],enumerable:!(r=dt(e,n))||r.enumerable});return t};var bt=t=>Ct(Ne({},"__esModule",{value:!0}),t);var Re=(t,e,s)=>{if(!e.has(t))throw TypeError("Cannot "+s)};var i=(t,e,s)=>(Re(t,e,"read from private field"),s?s.call(t):e.get(t)),f=(t,e,s)=>{if(e.has(t))throw TypeError("Cannot add the same private member more than once");e instanceof WeakSet?e.add(t):e.set(t,s)},S=(t,e,s,r)=>(Re(t,e,"write to private field"),r?r.call(t,s):e.set(t,s),s),Ye=(t,e,s,r)=>({set _(n){S(t,e,n,s)},get _(){return i(t,e,r)}}),p=(t,e,s)=>(Re(t,e,"access private method"),s);var fs={};Tt(fs,{ArrayBufferTarget:()=>re,FileSystemWritableFileStreamTarget:()=>ne,Muxer:()=>Ue,StreamTarget:()=>$});var c=new Uint8Array(8),E=new DataView(c.buffer),g=t=>[(t%256+256)%256],C=t=>(E.setUint16(0,t,!1),[c[0],c[1]]),Je=t=>(E.setInt16(0,t,!1),[c[0],c[1]]),Fe=t=>(E.setUint32(0,t,!1),[c[1],c[2],c[3]]),o=t=>(E.setUint32(0,t,!1),[c[0],c[1],c[2],c[3]]),et=t=>(E.setInt32(0,t,!1),[c[0],c[1],c[2],c[3]]),M=t=>(E.setUint32(0,Math.floor(t/2**32),!1),E.setUint32(4,t,!1),[c[0],c[1],c[2],c[3],c[4],c[5],c[6],c[7]]),ge=t=>(E.setInt16(0,2**8*t,!1),[c[0],c[1]]),U=t=>(E.setInt32(0,2**16*t,!1),[c[0],c[1],c[2],c[3]]),Le=t=>(E.setInt32(0,2**30*t,!1),[c[0],c[1],c[2],c[3]]),k=(t,e=!1)=>{let s=Array(t.length).fill(null).map((r,n)=>t.charCodeAt(n));return e&&s.push(0),s},K=t=>t&&t[t.length-1],ye=t=>{let e;for(let s of t)(!e||s.presentationTimestamp>e.presentationTimestamp)&&(e=s);return e},B=(t,e,s=!0)=>{let r=t*e;return s?Math.round(r):r},je=t=>{let e=t*(Math.PI/180),s=Math.cos(e),r=Math.sin(e);return[s,r,0,-r,s,0,0,0,1]},He=je(0),$e=t=>[U(t[0]),U(t[1]),Le(t[2]),U(t[3]),U(t[4]),Le(t[5]),U(t[6]),U(t[7]),Le(t[8])],Z=t=>!t||typeof t!="object"?t:Array.isArray(t)?t.map(Z):Object.fromEntries(Object.entries(t).map(([e,s])=>[e,Z(s)])),H=t=>t>=0&&t<2**32;var y=(t,e,s)=>({type:t,contents:e&&new Uint8Array(e.flat(10)),children:s}),b=(t,e,s,r,n)=>y(t,[g(e),Fe(s),r??[]],n),tt=t=>{let e=512;return t.fragmented?y("ftyp",[k("iso5"),o(e),k("iso5"),k("iso6"),k("mp41")]):y("ftyp",[k("isom"),o(e),k("isom"),t.holdsAvc?k("avc1"):[],k("mp41")])},we=t=>({type:"mdat",largeSize:t}),st=t=>({type:"free",size:t}),ie=(t,e,s=!1)=>y("moov",null,[St(e,t),...t.map(r=>gt(r,e)),s?Xt(t):null]),St=(t,e)=>{let s=B(Math.max(0,...e.filter(l=>l.samples.length>0).map(l=>{let m=ye(l.samples);return m.presentationTimestamp+m.duration})),xe),r=Math.max(...e.map(l=>l.id))+1,n=!H(t)||!H(s),a=n?M:o;return 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|
||||
|
||||
If you want to offset all timestamps of a track such that the first one is zero, set firstTimestampBehavior: 'offset' in the options.
|
||||
`);if(i(this,h).firstTimestampBehavior==="offset"||i(this,h).firstTimestampBehavior==="cross-track-offset"){r.firstDecodeTimestamp===void 0&&(r.firstDecodeTimestamp=s);let m;i(this,h).firstTimestampBehavior==="offset"?m=r.firstDecodeTimestamp:m=Math.min(i(this,x)?.firstDecodeTimestamp??1/0,i(this,w)?.firstDecodeTimestamp??1/0),s-=m,e-=m}if(s<r.lastDecodeTimestamp)throw new Error(`Timestamps must be monotonically increasing (DTS went from ${r.lastDecodeTimestamp*1e6} to ${s*1e6}).`);return r.lastDecodeTimestamp=s,{presentationTimestamp:e,decodeTimestamp:s}},te=new WeakSet,ze=function(e){if(i(this,h).fastStart==="fragmented")throw new Error("Can't finalize individual chunks 'fastStart' is set to 'fragmented'.");if(e.currentChunk){if(e.finalizedChunks.push(e.currentChunk),i(this,X).push(e.currentChunk),(e.compactlyCodedChunkTable.length===0||K(e.compactlyCodedChunkTable).samplesPerChunk!==e.currentChunk.samples.length)&&e.compactlyCodedChunkTable.push({firstChunk:e.finalizedChunks.length,samplesPerChunk:e.currentChunk.samples.length}),i(this,h).fastStart==="in-memory"){e.currentChunk.offset=0;return}e.currentChunk.offset=i(this,u).pos;for(let s of e.currentChunk.samples)i(this,u).write(s.data),s.data=null;p(this,G,pe).call(this)}},Ce=new WeakSet,Ze=function(e=!0){if(i(this,h).fastStart!=="fragmented")throw new Error("Can't finalize a fragment unless 'fastStart' is set to 'fragmented'.");let s=[i(this,x),i(this,w)].filter(d=>d&&d.currentChunk);if(s.length===0)return;let r=Ye(this,De)._++;if(r===1){let d=ie(s,i(this,W),!0);i(this,u).writeBox(d)}let n=i(this,u).pos,a=qe(r,s);i(this,u).writeBox(a);{let d=we(!1),T=0;for(let F of s)for(let se of F.currentChunk.samples)T+=se.size;let v=i(this,u).measureBox(d)+T;v>=2**32&&(d.largeSize=!0,v=i(this,u).measureBox(d)+T),d.size=v,i(this,u).writeBox(d)}for(let d of s){d.currentChunk.offset=i(this,u).pos,d.currentChunk.moofOffset=n;for(let T of d.currentChunk.samples)i(this,u).write(T.data),T.data=null}let l=i(this,u).pos;i(this,u).seek(i(this,u).offsets.get(a));let m=qe(r,s);i(this,u).writeBox(m),i(this,u).seek(l);for(let d of s)d.finalizedChunks.push(d.currentChunk),i(this,X).push(d.currentChunk),d.currentChunk=null;e&&p(this,G,pe).call(this)},G=new WeakSet,pe=function(){i(this,u)instanceof oe&&i(this,u).flush()},be=new WeakSet,Ke=function(){if(i(this,ee))throw new Error("Cannot add new video or audio chunks after the file has been finalized.")};return bt(fs);})();
|
||||
if (typeof module === "object" && typeof module.exports === "object") Object.assign(module.exports, Mp4Muxer)
|
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@@ -0,0 +1,4 @@
|
||||
var Ve=(t,e,s)=>{if(!e.has(t))throw TypeError("Cannot "+s)};var i=(t,e,s)=>(Ve(t,e,"read from private field"),s?s.call(t):e.get(t)),f=(t,e,s)=>{if(e.has(t))throw TypeError("Cannot add the same private member more than once");e instanceof WeakSet?e.add(t):e.set(t,s)},S=(t,e,s,r)=>(Ve(t,e,"write to private field"),r?r.call(t,s):e.set(t,s),s),Qe=(t,e,s,r)=>({set _(n){S(t,e,n,s)},get _(){return i(t,e,r)}}),p=(t,e,s)=>(Ve(t,e,"access private method"),s);var c=new Uint8Array(8),E=new 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|
||||
|
||||
If you want to offset all timestamps of a track such that the first one is zero, set firstTimestampBehavior: 'offset' in the options.
|
||||
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|
||||
File diff suppressed because it is too large.
Load diff
Reference in new issue
Block a user