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fix(YouTube - Alternative thumbnails): Always use primary thumbnail domain for still captures (#666)

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LisoUseInAIKyrios 2024-07-13 19:32:40 +04:00 committed by GitHub
parent 34ef27de79
commit 7cdaf8df14
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1 changed files with 35 additions and 21 deletions
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app/src/main/java/app/revanced/integrations/youtube/patches/AlternativeThumbnailsPatch.java
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@ -190,16 +190,17 @@ public final class AlternativeThumbnailsPatch {
* Build the alternative thumbnail url using YouTube provided still video captures.
*
* @param decodedUrl Decoded original thumbnail request url.
* @return The alternative thumbnail url, or the original url. Both without tracking parameters.
* @return The alternative thumbnail url, or if not available NULL.
*/
@NonNull
private static String buildYoutubeVideoStillURL(@NonNull DecodedThumbnailUrl decodedUrl,
@Nullable
private static String buildYouTubeVideoStillURL(@NonNull DecodedThumbnailUrl decodedUrl,
@NonNull ThumbnailQuality qualityToUse) {
String sanitizedReplacement = decodedUrl.createStillsUrl(qualityToUse, false);
if (VerifiedQualities.verifyAltThumbnailExist(decodedUrl.videoId, qualityToUse, sanitizedReplacement)) {
return sanitizedReplacement;
}
return decodedUrl.sanitizedUrl;
return null;
}
/**
@ -284,14 +285,21 @@ public final class AlternativeThumbnailsPatch {
final boolean includeTracking;
if (option.useDeArrow && canUseDeArrowAPI()) {
includeTracking = false; // Do not include view tracking parameters with API call.
final String fallbackUrl = option.useStillImages
? buildYoutubeVideoStillURL(decodedUrl, qualityToUse)
: decodedUrl.sanitizedUrl;
String fallbackUrl = null;
if (option.useStillImages) {
fallbackUrl = buildYouTubeVideoStillURL(decodedUrl, qualityToUse);
}
if (fallbackUrl == null) {
fallbackUrl = decodedUrl.sanitizedUrl;
}
sanitizedReplacementUrl = buildDeArrowThumbnailURL(decodedUrl.videoId, fallbackUrl);
} else if (option.useStillImages) {
includeTracking = true; // Include view tracking parameters if present.
sanitizedReplacementUrl = buildYoutubeVideoStillURL(decodedUrl, qualityToUse);
sanitizedReplacementUrl = buildYouTubeVideoStillURL(decodedUrl, qualityToUse);
if (sanitizedReplacementUrl == null) {
return originalUrl; // Still capture is not available. Return the untouched original url.
}
} else {
return originalUrl; // Recently experienced DeArrow failure and video stills are not enabled.
}
@ -345,7 +353,7 @@ public final class AlternativeThumbnailsPatch {
return; // Not a thumbnail.
}
Logger.printDebug(() -> "handleCronetSuccess, image not available: " + url);
Logger.printDebug(() -> "handleCronetSuccess, image not available: " + decodedUrl.sanitizedUrl);
ThumbnailQuality quality = ThumbnailQuality.altImageNameToQuality(decodedUrl.imageQuality);
if (quality == null) {
@ -627,14 +635,17 @@ public final class AlternativeThumbnailsPatch {
* YouTube video thumbnail url, decoded into it's relevant parts.
*/
private static class DecodedThumbnailUrl {
/**
* YouTube thumbnail URL prefix. Can be '/vi/' or '/vi_webp/'
*/
private static final String YOUTUBE_THUMBNAIL_PREFIX = "https://i.ytimg.com/vi";
private static final String YOUTUBE_THUMBNAIL_DOMAIN = "https://i.ytimg.com/";
@Nullable
static DecodedThumbnailUrl decodeImageUrl(String url) {
final int videoIdStartIndex = url.indexOf('/', YOUTUBE_THUMBNAIL_PREFIX.length()) + 1;
final int urlPathStartIndex = url.indexOf('/', "https://".length()) + 1;
if (urlPathStartIndex <= 0) return null;
final int urlPathEndIndex = url.indexOf('/', urlPathStartIndex);
if (urlPathEndIndex < 0) return null;
final int videoIdStartIndex = url.indexOf('/', urlPathEndIndex) + 1;
if (videoIdStartIndex <= 0) return null;
final int videoIdEndIndex = url.indexOf('/', videoIdStartIndex);
@ -647,15 +658,15 @@ public final class AlternativeThumbnailsPatch {
int imageExtensionEndIndex = url.indexOf('?', imageSizeEndIndex);
if (imageExtensionEndIndex < 0) imageExtensionEndIndex = url.length();
return new DecodedThumbnailUrl(url, videoIdStartIndex, videoIdEndIndex,
return new DecodedThumbnailUrl(url, urlPathStartIndex, urlPathEndIndex, videoIdStartIndex, videoIdEndIndex,
imageSizeStartIndex, imageSizeEndIndex, imageExtensionEndIndex);
}
final String originalFullUrl;
/** Full usable url, but stripped of any tracking information. */
final String sanitizedUrl;
/** Url up to the video ID. */
final String urlPrefix;
/** Url path, such as 'vi' or 'vi_webp' */
final String urlPath;
final String videoId;
/** Quality, such as hq720 or sddefault. */
final String imageQuality;
@ -664,11 +675,11 @@ public final class AlternativeThumbnailsPatch {
/** User view tracking parameters, only present on some images. */
final String viewTrackingParameters;
DecodedThumbnailUrl(String fullUrl, int videoIdStartIndex, int videoIdEndIndex,
DecodedThumbnailUrl(String fullUrl, int urlPathStartIndex, int urlPathEndIndex, int videoIdStartIndex, int videoIdEndIndex,
int imageSizeStartIndex, int imageSizeEndIndex, int imageExtensionEndIndex) {
originalFullUrl = fullUrl;
sanitizedUrl = fullUrl.substring(0, imageExtensionEndIndex);
urlPrefix = fullUrl.substring(0, videoIdStartIndex);
urlPath = fullUrl.substring(urlPathStartIndex, urlPathEndIndex);
videoId = fullUrl.substring(videoIdStartIndex, videoIdEndIndex);
imageQuality = fullUrl.substring(imageSizeStartIndex, imageSizeEndIndex);
imageExtension = fullUrl.substring(imageSizeEndIndex + 1, imageExtensionEndIndex);
@ -681,9 +692,12 @@ public final class AlternativeThumbnailsPatch {
// Images could be upgraded to webp if they are not already, but this fails quite often,
// especially for new videos uploaded in the last hour.
// And even if alt webp images do exist, sometimes they can load much slower than the original jpg alt images.
// (as much as 4x slower has been observed, despite the alt webp image being a smaller file).
// (as much as 4x slower network response has been observed, despite the alt webp image being a smaller file).
StringBuilder builder = new StringBuilder(originalFullUrl.length() + 2);
builder.append(urlPrefix);
// Many different "i.ytimage.com" domains exist such as "i9.ytimg.com",
// but still captures are frequently not available on the other domains (especially newly uploaded videos).
// So always use the primary domain for a higher success rate.
builder.append(YOUTUBE_THUMBNAIL_DOMAIN).append(urlPath).append('/');
builder.append(videoId).append('/');
builder.append(qualityToUse.getAltImageNameToUse());
builder.append('.').append(imageExtension);