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estimate quality for non standard levels

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Pas 2025-07-07 18:31:02 -06:00
parent 76124c9299
commit 4509a74a55
2 changed files with 45 additions and 15 deletions
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55
src/components/player/display/base.ts
View file

@ -38,15 +38,30 @@ const levelConversionMap: Record<number, SourceQuality> = {
2160: "4k",
};
function hlsLevelToQuality(level?: Level): SourceQuality | null {
return levelConversionMap[level?.height ?? 0] ?? null;
}
// Define quality thresholds for mapping non-standard resolutions
const qualityThresholds = [
{ minHeight: 1800, quality: "4k" as SourceQuality },
{ minHeight: 800, quality: "1080" as SourceQuality },
{ minHeight: 600, quality: "720" as SourceQuality },
{ minHeight: 420, quality: "480" as SourceQuality },
{ minHeight: 0, quality: "360" as SourceQuality },
];
function qualityToHlsLevel(quality: SourceQuality): number | null {
const found = Object.entries(levelConversionMap).find(
(entry) => entry[1] === quality,
);
return found ? +found[0] : null;
function hlsLevelToQuality(level?: Level): SourceQuality | null {
if (!level?.height) return null;
// First check for exact matches
const exactMatch = levelConversionMap[level.height];
if (exactMatch) return exactMatch;
// For non-standard resolutions, map to closest standard quality
for (const threshold of qualityThresholds) {
if (level.height >= threshold.minHeight) {
return threshold.quality;
}
}
return "unknown"; // fallback to unknown quality
}
function hlsLevelsToQualities(levels: Level[]): SourceQuality[] {
@ -55,6 +70,11 @@ function hlsLevelsToQualities(levels: Level[]): SourceQuality[] {
.filter((v): v is SourceQuality => !!v);
}
// Sort levels by quality (height) to ensure we can select the best one
function sortLevelsByQuality(levels: Level[]): Level[] {
return [...levels].sort((a, b) => (b.height || 0) - (a.height || 0));
}
export function makeVideoElementDisplayInterface(): DisplayInterface {
const { emit, on, off } = makeEmitter<DisplayInterfaceEvents>();
let source: LoadableSource | null = null;
@ -115,18 +135,25 @@ export function makeVideoElementDisplayInterface(): DisplayInterface {
if (!hls) return;
if (!automaticQuality) {
const qualities = hlsLevelsToQualities(hls.levels);
const sortedLevels = sortLevelsByQuality(hls.levels);
const qualities = hlsLevelsToQualities(sortedLevels);
const availableQuality = getPreferredQuality(qualities, {
lastChosenQuality: preferenceQuality,
automaticQuality,
});
if (availableQuality) {
const levelIndex = hls.levels.findIndex(
(v) => v.height === qualityToHlsLevel(availableQuality),
// Find the best level that matches our preferred quality
const matchingLevels = hls.levels.filter(
(level) => hlsLevelToQuality(level) === availableQuality,
);
if (levelIndex !== -1) {
hls.currentLevel = levelIndex;
hls.loadLevel = levelIndex;
if (matchingLevels.length > 0) {
// Pick the highest resolution level for this quality
const bestLevel = sortLevelsByQuality(matchingLevels)[0];
const levelIndex = hls.levels.indexOf(bestLevel);
if (levelIndex !== -1) {
hls.currentLevel = levelIndex;
hls.loadLevel = levelIndex;
}
}
}
} else {

5
src/stores/player/utils/qualities.ts
View file

@ -52,8 +52,11 @@ export function getPreferredQuality(
qualityPreferences.automaticQuality ||
qualityPreferences.lastChosenQuality === null ||
qualityPreferences.lastChosenQuality === "unknown"
)
) {
// For automatic quality, select the best available quality
// Sort by our quality preference order and pick the first (best) available
return sortedQualities.find((v) => availableQualites.includes(v));
}
// get preferred quality - not automatic or unknown
const chosenQualityIndex = sortedQualities.indexOf(