+function isRemoteVideoUrlValid (url: any) {
+ return url.type === 'Link' &&
+ // Video file link
+ (
+ ACTIVITY_PUB.URL_MIME_TYPES.VIDEO.includes(url.mediaType) &&
+ isActivityPubUrlValid(url.href) &&
+ validator.isInt(url.height + '', { min: 0 }) &&
+ validator.isInt(url.size + '', { min: 0 }) &&
+ (!url.fps || validator.isInt(url.fps + '', { min: -1 }))
+ ) ||
+ // Torrent link
+ (
+ ACTIVITY_PUB.URL_MIME_TYPES.TORRENT.includes(url.mediaType) &&
+ isActivityPubUrlValid(url.href) &&
+ validator.isInt(url.height + '', { min: 0 })
+ ) ||
+ // Magnet link
+ (
+ ACTIVITY_PUB.URL_MIME_TYPES.MAGNET.includes(url.mediaType) &&
+ validator.isLength(url.href, { min: 5 }) &&
+ validator.isInt(url.height + '', { min: 0 })
+ ) ||
+ // HLS playlist link
+ (
+ (url.mediaType || url.mimeType) === 'application/x-mpegURL' &&
+ isActivityPubUrlValid(url.href) &&
+ isArray(url.tag)
+ ) ||
+ isAPVideoTrackerUrlObject(url) ||
+ isAPVideoFileUrlMetadataObject(url)
+}
+
+function isAPVideoFileUrlMetadataObject (url: any): url is ActivityVideoFileMetadataUrlObject {
+ return url &&
+ url.type === 'Link' &&
+ url.mediaType === 'application/json' &&
+ isArray(url.rel) && url.rel.includes('metadata')
+}
+
+function isAPVideoTrackerUrlObject (url: any): url is ActivityTrackerUrlObject {
+ return isArray(url.rel) &&
+ url.rel.includes('tracker') &&
+ isActivityPubUrlValid(url.href)
+}
+