2026.9.21.0

YT
VideoOptionsForm: handling of type 'audio+video'
YouTubeMediaContainerBase: move 'DataReceivedEventHandler' to a public module

SC
REMOVE: Mastodon, Imgur
API.UserDataBase: remove unused references; optimize the use of '_ForceSaveUserData' and '_ForceSaveUserInfo'; update 'ErrorDownloading' function
API.Base.YTDLP: add 'SetProgress' and 'CreateFileExchanger' functions
API.Bluesky: add 'UseMD5Comparison' and 'RemoveExistingDuplicates' options; handling errors 502 and 504; update 'UserExists' detection
API.Instagram: switch to 'GraphQL'
API.OnlyFans: add a special label 'DRM'
API.PornHub: fix photo and video downloads; add yt-dlp support
API.Reddit: remove predefined 'ClientID' and 'ClientSecret'; update 'AvailableTrueValue' function; add REST API support; fix carousels downloading; remove Imgur support
API.ThisVid: fix profile info
API.Twitter: remove Mastodon compatibility; update bookmarks link
API.Xhamster: update yt-dlp
Automation: remove unused references
DownloadFeedForm: new feeds do not appear in the 'Load' toolbar dropdown
MissingPostsForm: add 'ESC' hotkey
TDownloader: implement the ability to add to the log a list of users who have missing posts; exclude the 'Path' plugin from downloading
VideoDownloaderForm: remove Imgur support
DownloadableMediaHost: remove Imgur support; protect photos from deletion
PluginHost: remove Mastodon
SettingsCLS: add 'AddMissingPostUsersToLog' property

SCrawler.YouTube/Controls/VideoOptionsForm.vb

@@ -137,6 +137,19 @@ Namespace API.YouTube.Controls
                     End If
                     CMB_FORMAT.Enabled = OPT_VIDEO.Checked
 
+                    With .MediaObjects
+                        Dim disableOpts As Boolean = False
+                        If .Count = 0 Or .Count = 1 Then
+                            disableOpts = True
+                        ElseIf .Exists(Function(mm) mm.Type = UMTypes.Video Or mm.Type = YouTubeMediaContainerBase.TypeAudioVideo) And
+                               .Exists(Function(mm) mm.Type = UMTypes.Audio) Then
+                            disableOpts = False
+                        Else
+                            disableOpts = True
+                        End If
+                        If disableOpts Then OPT_AUDIO.Enabled = False : OPT_VIDEO.Enabled = False
+                    End With
+
                     arr = AvailableVideoFormats
                     CMB_FORMAT.Items.AddRange(arr)
                     If InheritsFromContainer Then
@@ -232,7 +245,7 @@ Namespace API.YouTube.Controls
                     data = .Elements.Select(Function(ee) New MediaItem(ee, True) With {.Dock = DockStyle.Fill, .Checked = ee.Checked, .UseCookies = UseCookies})
                 Else
                     data = (From m As MediaObject In .Self.MediaObjects
-                            Where m.Type = __contentType
+                            Where m.Type = __contentType Or (__contentType = UMTypes.Video And m.Type = YouTubeMediaContainerBase.TypeAudioVideo)
                             Select New VideoOption(m, audio) With {.Dock = DockStyle.Fill, .Checked = m.Index = MyContainer.SelectedVideoIndex})
                 End If