154 lines
3.2 KiB
TypeScript
154 lines
3.2 KiB
TypeScript
type VideoEncodePreset = {
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id: string;
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codec: "av1";
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preset: 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8;
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mbitMax?: number;
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crf: number;
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maxHeight?: number;
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audioKbit?: number;
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depth?: 8 | 10;
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} | {
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id: string;
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codec: "vp9";
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crf: number;
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mbitMax?: number;
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maxHeight?: number;
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audioKbit?: number;
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};
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export const videoFormats = [
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{
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id: "au", // AV1 Ultra-High
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codec: "av1",
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preset: 1,
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crf: 28,
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depth: 10,
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},
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{
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id: "vu", // VP9 Ultra-High
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codec: "vp9",
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crf: 30,
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},
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{
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id: "ah", // AV1 High
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preset: 2,
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codec: "av1",
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mbitMax: 5,
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crf: 35,
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depth: 10,
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},
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{
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id: "am", // AV1 Medium
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preset: 2,
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codec: "av1",
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mbitMax: 2,
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crf: 40,
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maxHeight: 900,
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},
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{
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id: "vm", // VP9 Medium
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codec: "vp9",
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crf: 35,
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mbitMax: 4,
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maxHeight: 1080,
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},
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{
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id: "al", // AV1 Low
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preset: 2,
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codec: "av1",
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mbitMax: 1.25,
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crf: 40,
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maxHeight: 600,
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},
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{
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id: "vl", // VP9 Low
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codec: "vp9",
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crf: 45,
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mbitMax: 2,
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maxHeight: 600,
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},
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{
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id: "ad", // AV1 Data-saving
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codec: "av1",
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preset: 1,
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mbitMax: 0.5,
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crf: 10,
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maxHeight: 360,
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},
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{
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id: "vl", // VP9 Low
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codec: "vp9",
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crf: 10,
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mbitMax: 0.75,
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maxHeight: 360,
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},
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] satisfies VideoEncodePreset[] as VideoEncodePreset[];
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export const imageSizes = [64, 128, 256, 512, 1024, 2048];
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export const imagePresets = [
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{
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ext: ".webp",
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args: [
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"-lossless",
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"0",
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"-compression_level",
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"6",
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"-quality",
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"95",
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"-method",
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"6",
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],
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},
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// TODO: avif
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{
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ext: ".jxl",
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args: ["-c:v", "libjxl", "-distance", "0.8", "-effort", "9"],
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},
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];
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export function getVideoArgs(preset: VideoEncodePreset, outbase: string, input: string[]) {
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const cmd = [...input];
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if (preset.codec === "av1") {
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cmd.push("-c:v", "libsvtav1");
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cmd.push(
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"-svtav1-params",
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[
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`preset=${preset.preset}`,
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"keyint=2s",
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preset.depth && `input-depth=${preset.depth}`, // EncoderBitDepth
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`crf=${preset.crf}`, // ConstantRateFactor
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preset.mbitMax && `mbr=${preset.mbitMax}m`, // MaxBitRate
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"tune=1", // Tune, PSNR
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"enable-overlays=1", // EnableOverlays
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"fast-decode=1", // FastDecode
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"scm=2", // ScreenContentMode, adaptive
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].filter(Boolean).join(":"),
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);
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} else if (preset.codec === "vp9") {
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// Not much research has gone into this, since it is only going to be used on old Safari browsers.
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cmd.push("-c:v", "libvpx-vp9");
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cmd.push("-crf", String(preset.crf));
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cmd.push("-b:v", preset.mbitMax ? `${preset.mbitMax * 1000}k` : "0");
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} else preset satisfies never;
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if (preset.maxHeight != null) {
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cmd.push("-vf", `scale=-2:min(${preset.maxHeight}\\,ih)`);
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}
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cmd.push("-c:a", "libopus");
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cmd.push("-b:a", (preset.audioKbit ?? 192) + "k");
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cmd.push("-y");
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cmd.push("-f", "hls");
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cmd.push("-hls_list_size", "0");
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cmd.push("-hls_segment_type", "fmp4");
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cmd.push("-hls_time", "2");
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cmd.push("-hls_allow_cache", "1");
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cmd.push("-hls_fmp4_init_filename", preset.id + ".mp4");
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cmd.push(path.join(outbase, preset.id + ".m3u8"));
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return cmd;
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}
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import * as path from "node:path";
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