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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 1x 1x 2x 2x 2x 2x 2x 2x 1x 1x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x | import { FfmpegProcess } from './process'
import {
FfmpegCodecs,
FfmpegEncoders,
FfmpegFilters,
FfmpegFormats
} from './utils/data-types'
import {
extractCodecs,
extractEncoders,
extractFilters,
extractFormats
} from './utils/parsing'
import { nlRegexp } from './utils/regexp'
export class FfmpegCapabilities {
#codecs: FfmpegCodecs | null = null
#formats: FfmpegFormats | null = null
#filters: FfmpegFilters | null = null
#encoders: FfmpegEncoders | null = null
#decoders: FfmpegEncoders | null = null
private async getLines(arg: string): Promise<string[]> {
let { stdout } = await new FfmpegProcess({
args: [arg],
captureStdout: true
}).run()
return stdout.split(nlRegexp) || []
}
async codecs() {
// TODO note: if we ever check codecs, "copy" is also an option for output codec
if (!this.#codecs) {
this.#codecs = extractCodecs(await this.getLines('-codecs'))
}
return this.#codecs
}
async formats() {
if (!this.#formats) {
this.#formats = extractFormats(await this.getLines('-formats'))
}
return this.#formats
}
async filters() {
if (!this.#filters) {
this.#filters = extractFilters(await this.getLines('-filters'))
}
return this.#filters
}
async encoders() {
if (!this.#encoders) {
this.#encoders = extractEncoders(await this.getLines('-encoders'))
}
return this.#encoders
}
async decoders() {
if (!this.#decoders) {
this.#decoders = extractEncoders(await this.getLines('-decoders'))
}
return this.#decoders
}
}
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