feat: support for lockupViewModel inside of channels' video feed

this is rare and currently a/b tested

ythdd_globals.py

@@ -151,3 +151,7 @@ def getCommit() -> str | None:
 	except Exception as e:
 		return None
 
+def print_debug(text: str) -> None:
+	# Will print a string only if debugging is enabled.
+	if config["general"]["debug"]:
+		print(text)

ythdd_inv_tl.py

@@ -45,6 +45,7 @@ import ythdd_struct_parser
 # IDEAS:
 # [*] /api/v1/popular returns last requested videos by the IP (serving as multi-device history?)
 # [*] /api/v1/trending returns recently archived videos
+# [*] produce continuations instead of extracting them
 # ----------
 # NOT PLANNED/MAYBE IN THE FUTURE:
 # [ ] /api/v1/auth/subscriptions (stub? db?)
@@ -424,6 +425,7 @@ def videos(data):
 				if is_mix_or_playlist:
 					# neither mixes nor playlists are currently supported by the invidious api
 					continue
+				# note: this model is similar, but not identical to the one in ythdd_struct_parser. perhaps they can be both handled in the struct parser some time.
 				lmvm = safeTraverse(y, ['metadata', 'lockupMetadataViewModel'], default=[])
 				related_entry['videoId']          = safeTraverse(y, ['contentId'])
 				related_entry['title']            = safeTraverse(lmvm, ['title', 'content'])

ythdd_struct_parser.py

@@ -50,6 +50,7 @@ def parseRenderers(entry: dict, context: dict = {}) -> dict:
 	match safeTraverse(list(entry.keys()), [0], default=""):
 
 		case "videoRenderer": # represents a video
+			# as of october 2025 slowly phased out in favor of lockupViewModel(?)
 
 			published_date = safeTraverse(entry, ["videoRenderer", "publishedTimeText", "simpleText"], default="now")
 			published_date = published_date.removeprefix("Streamed ")
@@ -118,6 +119,7 @@ def parseRenderers(entry: dict, context: dict = {}) -> dict:
 					# retrieve the main channel's avatar
 					avatar_url = safeTraverse(livm, [0, "listItemViewModel", "leadingAccessory", "avatarViewModel", "image", "sources", 0, "url"], default=DEFAULT_AVATAR)
 
+			ythdd_globals.print_debug("videoRenderer fired")
 			return {
 				"type": "video",
 				"title": safeTraverse(entry, ["videoRenderer", "title", "runs", 0, "text"]),
@@ -149,15 +151,67 @@ def parseRenderers(entry: dict, context: dict = {}) -> dict:
 
 			# modify the premiere timestamp afterwards here?
 
-		case "lockupViewModel": # represents playlists/mixes
+		case "lockupViewModel": # represents playlists/mixes (and videos since october 2025)
+			# related videos lvms are handled in ythdd_inv_tl.videos()
 
-			playlist_type = safeTraverse(entry, ["lockupViewModel", "contentImage", "collectionThumbnailViewModel", "primaryThumbnail", "thumbnailViewModel", "overlays", 0, "thumbnailOverlayBadgeViewModel", "thumbnailBadges", 0, "thumbnailBadgeViewModel", "icon", "sources", 0, "clientResource", "imageName"], default="PLAYLISTS")
+			lvm = entry["lockupViewModel"]
+			playlist_type = safeTraverse(lvm, ["contentImage", "collectionThumbnailViewModel", "primaryThumbnail", "thumbnailViewModel", "overlays", 0, "thumbnailOverlayBadgeViewModel", "thumbnailBadges", 0, "thumbnailBadgeViewModel", "icon", "sources", 0, "clientResource", "imageName"], default="")
 
 			if playlist_type == "MIX":
 				# mixes aren't currently supported
 				return
 
-			lvm         = entry["lockupViewModel"]
+			if not playlist_type:
+				# struct represents a video
+				ythdd_globals.print_debug("lockupViewModel fired (not a playlist). this is an a/b test; any following errors stem from it.")
+
+				lmvm = safeTraverse(lvm, ['metadata', 'lockupMetadataViewModel'], default={})
+				video_id = safeTraverse(lvm, ['contentId'])
+
+				author_name = safeTraverse(context, ["author_name"], default="Unknown author")
+				author_ucid = safeTraverse(context, ["author_ucid"], default="UNKNOWNCHANNELID")
+				verified = safeTraverse(context, ["verified"], default=False) # TODO: check if this can be retrieved here
+				avatar_url = safeTraverse(context, ["avatar"], default=DEFAULT_AVATAR)
+
+				title = safeTraverse(lmvm, ["title", "content"], default="No title")
+				video_metadata = safeTraverse(lmvm, ["metadata", "contentMetadataViewModel", "metadataRows", 0, "metadataParts"], default=[])
+				view_count_text = safeTraverse(video_metadata, [0, "text", "content"], default="0 views")
+				published_date = safeTraverse(video_metadata, [1, "text", "content"], default="now")
+				length_text = safeTraverse(lvm, ["contentImage", "thumbnailViewModel", "overlays", ..., "thumbnailBottomOverlayViewModel", "badges", -1, "thumbnailBadgeViewModel", "text"], default="0:0")
+				view_count = parseViewsFromViewText(view_count_text)
+				length = parseLengthFromTimeBadge(length_text)
+
+				resp = {
+					"type": "video",
+					"title": title,
+					"videoId": video_id,
+					"author": author_name,
+					"authorId": author_ucid,
+					"authorUrl": "/channel/" + author_ucid,
+					"authorVerified": verified, # TODO
+					"authorThumbnails": ythdd_extractor.generateChannelAvatarsFromUrl(avatar_url),
+					"videoThumbnails": ythdd_struct_builder.genThumbs(video_id),
+					"description": "", # can't be retrieved from lockupViewModel
+					"descriptionHtml": "",
+					"viewCount": view_count,
+					"viewCountText": view_count_text,
+					"published": int(dateparser.parse(published_date).timestamp()), # sadly best we can do, invidious does this too
+					"publishedText": published_date,
+					"lengthSeconds": length,
+					"liveNow": False, # can't be live if it's in creator's video feed
+					"premium": False, # todo: check this
+					"isUpcoming": False,
+					"isNew": False,
+					"is4k": False,
+					"is8k": False,
+					"isVr180": False,
+					"isVr360": False,
+					"is3d": False,
+					"hasCaptions": False
+				}
+				return resp
+
+			# struct represents a playlist
 			meta        = safeTraverse(lvm,  ["metadata"], default=[])
 			lmvm        = safeTraverse(meta, ["lockupMetadataViewModel", "metadata", "contentMetadataViewModel", "metadataRows"], default=[])
 			thumbnail   = safeTraverse(lvm, ["contentImage", "collectionThumbnailViewModel", "primaryThumbnail", "thumbnailViewModel", "image", "sources", -1, "url"], default="no-url?")
@@ -168,7 +222,7 @@ def parseRenderers(entry: dict, context: dict = {}) -> dict:
 			length      = safeTraverse(lvm,  ["contentImage", "collectionThumbnailViewModel", "primaryThumbnail", "thumbnailViewModel", "overlays", 0, "thumbnailOverlayBadgeViewModel", "thumbnailBadges", 0, "thumbnailBadgeViewModel", "text"], default="0 videos")
 			length      = parseViewsFromViewText(length.split(" ")[0])
 
-			# Turns out for some responses we do some data, while not on others.
+			# Turns out for some responses we do have some data, while not on others.
 			# Data from context should be prioritized, thus even if something is found with safeTraverse,
 			# the parser will ignore it in favour of the context.
 			ucid      = safeTraverse(lmvm, [0, "metadataParts", 0, "text", "commandRuns", 0, "onTap", "innertubeCommand", "browseEndpoint", "browseId"], default="UNKNOWNCHANNELID")
@@ -176,6 +230,7 @@ def parseRenderers(entry: dict, context: dict = {}) -> dict:
 			ucid      = safeTraverse(context, ["author_ucid"], default=ucid)
 			author    = safeTraverse(context, ["author_name"], default=author)
 
+			ythdd_globals.print_debug("lockupViewModel fired (playlist)")
 			return {
 				"type": "playlist",
 				"title": safeTraverse(meta, ["lockupMetadataViewModel", "title", "content"], default="ythdd: unknown title"),
@@ -227,6 +282,7 @@ def parseRenderers(entry: dict, context: dict = {}) -> dict:
 			else:
 				avatar_url = "unknown"
 
+			ythdd_globals.print_debug("shortsLockupViewModel fired")
 			return {
 				"type": "video",
 				"title": title,
@@ -269,6 +325,7 @@ def parseRenderers(entry: dict, context: dict = {}) -> dict:
 			published_date = safeTraverse(entry, ["gridVideoRenderer", "publishedTimeText", "simpleText"], default="now")
 			published_date = published_date.removeprefix("Streamed ")
 
+			ythdd_globals.print_debug("gridVideoRenderer fired")
 			return {
 				"type": "video",
 				"title": safeTraverse(entry, ["gridVideoRenderer", "title", "simpleText"], default="unknown video title"),
@@ -303,6 +360,7 @@ def parseRenderers(entry: dict, context: dict = {}) -> dict:
 			description, description_html = parseDescriptionSnippet(safeTraverse(entry, ["channelRenderer", "descriptionSnippet", "runs"], default=[]))
 			isVerified = ythdd_extractor.isVerified(safeTraverse(entry, ["channelRenderer", "ownerBadges", 0], default=[]))
 
+			ythdd_globals.print_debug("channelRenderer fired")
 			return {
 				"type": "channel",
 				"author": safeTraverse(entry, ["channelRenderer", "title", "simpleText"], default="Unknown channel"),
@@ -353,6 +411,7 @@ def parseRenderers(entry: dict, context: dict = {}) -> dict:
 			avatar_url = safeTraverse(entry, ["playlistVideoRenderer", "thumbnailOverlays", ..., "thumbnailOverlayAvatarStackViewModel", "avatarStack", "avatarStackViewModel", "avatars", 0, "avatarViewModel", "image", "sources", 0, "url"])
 			avatars = None if avatar_url is None else ythdd_extractor.generateChannelAvatarsFromUrl(avatar_url)
 
+			ythdd_globals.print_debug("playlistVideoRenderer fired")
 			return {
 				"type": "video",
 				"title": title,
@@ -372,7 +431,7 @@ def parseRenderers(entry: dict, context: dict = {}) -> dict:
 			}
 
 		case _:
-			print("received an entry of unknown type:")
+			print("received an entry of unknown type (thus can't be parsed):")
 			print(entry)
 			print("")
 			# breakpoint()