diff --git a/src/components/downloadOptionsDialog/downloadOptionsDialog.js b/src/components/downloadOptionsDialog/downloadOptionsDialog.js
index a6f9bb0882..647cd34c8a 100644
--- a/src/components/downloadOptionsDialog/downloadOptionsDialog.js
+++ b/src/components/downloadOptionsDialog/downloadOptionsDialog.js
@@ -13,29 +13,31 @@ let currentItem;
let currentApiClient;
function getBitrateOptionsForResolutionAndCodec(resolution, codec) {
- // Codec efficiency factors based on reference tables
+ // Codec efficiency factors based on real-world performance
const codecFactors = {
'h264': 1.0,
'hevc': 0.6, // 40% more efficient
'vp9': 0.6, // 40% more efficient
- 'av1': 0.5 // 50% more efficient
+ 'av1': 0.55 // 45% more efficient
};
- // Base bitrate ranges for H.264 (30fps SDR)
+ // Base bitrate ranges for H.264 (updated for 2025 standards)
const baseRanges = {
- '3840': { min: 28000000, max: 50000000, label: '4K' }, // 4K
- '2560': { min: 13500000, max: 28000000, label: '1440p' }, // 1440p
- '1920': { min: 6000000, max: 13500000, label: '1080p' }, // 1080p
- '1280': { min: 3000000, max: 6000000, label: '720p' }, // 720p
- '640': { min: 365000, max: 730000, label: '480p' }, // 480p
+ '3840': { min: 25000000, max: 80000000, label: '4K' }, // 25-80 Mbps
+ '2560': { min: 12000000, max: 35000000, label: '1440p' }, // 12-35 Mbps
+ '1920': { min: 5000000, max: 16000000, label: '1080p' }, // 5-16 Mbps
+ '1280': { min: 2500000, max: 8000000, label: '720p' }, // 2.5-8 Mbps
+ '640': { min: 1000000, max: 2500000, label: '480p' }, // 1-2.5 Mbps
'original': { min: 50000000, max: 120000000, label: 'Original' }
};
if (resolution === 'original') {
return [
- { bitrate: 120000000, name: 'Maximum' },
+ { bitrate: 120000000, name: 'Extreme Quality' },
+ { bitrate: 100000000, name: 'Maximum' },
{ bitrate: 80000000, name: 'High' },
- { bitrate: 50000000, name: 'Medium' }
+ { bitrate: 60000000, name: 'Medium' },
+ { bitrate: 50000000, name: 'Standard' }
];
}
@@ -44,11 +46,15 @@ function getBitrateOptionsForResolutionAndCodec(resolution, codec) {
const min = Math.round(range.min * factor);
const max = Math.round(range.max * factor);
- const recommended = Math.round((min + max) / 2);
+ const step = (max - min) / 5;
+ // Generate 6 quality levels
return [
{ bitrate: max, name: `Maximum (${range.label})` },
- { bitrate: recommended, name: `Recommended (${range.label})` },
+ { bitrate: Math.round(max - step), name: `Very High (${range.label})` },
+ { bitrate: Math.round(max - step * 2), name: `High (${range.label})` },
+ { bitrate: Math.round(max - step * 3), name: `Medium (${range.label})` },
+ { bitrate: Math.round(max - step * 4), name: `Low (${range.label})` },
{ bitrate: min, name: `Minimum (${range.label})` }
];
}
@@ -69,7 +75,7 @@ function populateQualityOptions(dlg, item) {
const options = getBitrateOptionsForResolutionAndCodec(resolution, codec);
selectQuality.innerHTML = options.map((option, index) => {
- const selected = index === 1 ? ' selected' : ''; // Select "Recommended"
+ const selected = index === 2 ? ' selected' : ''; // Select "High" (3rd option)
const mbps = (option.bitrate / 1000000).toFixed(1);
return ``;
}).join('');
@@ -95,36 +101,49 @@ function populateAudioTracks(dlg, item) {
}
function getRecommendedAudioBitrate(codec, channels) {
- // Recommended bitrates based on codec and channel count
+ // Recommended bitrates based on codec and channel count (2025 standards)
const bitrates = {
'aac': {
- 2: 192000, // Stereo
- 6: 448000, // 5.1
- 8: 640000 // 7.1
+ 2: 192000, // Stereo - transparent quality
+ 6: 256000, // 5.1 - Netflix/streaming standard
+ 8: 384000 // 7.1 - high quality
},
'ac3': {
- 2: 192000,
- 6: 448000, // Dolby Digital standard
- 8: 640000
+ 2: 192000, // Stereo
+ 6: 448000, // 5.1 - Dolby Digital standard (fixed at 448k)
+ 8: 640000 // 7.1 - Dolby Digital spec maximum
},
'eac3': {
- 2: 192000,
- 6: 448000,
- 8: 768000
+ 2: 224000, // Stereo - DD+ improved quality
+ 6: 384000, // 5.1 - DD+ standard
+ 8: 768000 // 7.1 - DD+ maximum
},
'opus': {
- 2: 128000,
- 6: 320000,
- 8: 450000
+ 2: 128000, // Stereo - excellent quality (Opus is very efficient)
+ 6: 256000, // 5.1 - high quality
+ 8: 384000 // 7.1 - very high quality
},
'mp3': {
- 2: 320000,
- 6: 320000,
- 8: 320000
+ 2: 192000, // Stereo - "very high quality" (320k is overkill)
+ 6: 192000, // Downmix to stereo (MP3 doesn't support multichannel)
+ 8: 192000 // Downmix to stereo
}
};
- return bitrates[codec]?.[channels] || bitrates[codec]?.[2] || 320000;
+ return bitrates[codec]?.[channels] || bitrates[codec]?.[2] || 192000;
+}
+
+function getMaxAudioBitrate(codec) {
+ // Maximum sensible bitrates per codec
+ const maxBitrates = {
+ 'aac': 512000, // AAC practical max for 7.1
+ 'ac3': 640000, // AC3 spec maximum
+ 'eac3': 1536000, // E-AC3 spec maximum (Atmos capable)
+ 'opus': 510000, // Opus practical max (very efficient)
+ 'mp3': 320000 // MP3 spec maximum
+ };
+
+ return maxBitrates[codec] || 640000;
}
function updateAudioBitrateOptions(dlg) {
@@ -145,16 +164,7 @@ function updateAudioBitrateOptions(dlg) {
audioBitrateContainer.style.display = 'block';
}
- // Codec-specific maximum bitrates (in bps)
- const codecMaxBitrates = {
- 'mp3': 320000, // MP3 spec maximum
- 'aac': 640000, // Practical max for multi-channel AAC
- 'ac3': 640000, // Dolby Digital maximum
- 'eac3': 768000, // Dolby Digital Plus practical max
- 'opus': 512000 // Opus practical max (very efficient)
- };
-
- const maxBitrate = codecMaxBitrates[codec] || 768000;
+ const maxBitrate = getMaxAudioBitrate(codec);
const recommendedBitrate = getRecommendedAudioBitrate(codec, channels);
// Filter and update bitrate options based on codec
diff --git a/src/components/downloadOptionsDialog/downloadOptionsDialog.template.html b/src/components/downloadOptionsDialog/downloadOptionsDialog.template.html
index adfc8f2457..aa19b73a11 100644
--- a/src/components/downloadOptionsDialog/downloadOptionsDialog.template.html
+++ b/src/components/downloadOptionsDialog/downloadOptionsDialog.template.html
@@ -62,17 +62,23 @@