Thumbs not generated for network audio media
When using the taglib backport on Android, the thumbnails are not generated for network audio medias.
Logs during parsing (for one file):
2021-03-15 10:23:07.540 27037-27430/org.videolan.vlc.debug D/VLC/medialibrary: [T#513542991024] ../src/parser/ParserWorker.cpp:247 mainloop Done executing VLC task on smb://AZABUNTU/Anonymous/audio/generated/1min%20%287e%20copie%29.mp3 in 139ms. Result: 1
2021-03-15 10:23:07.545 27037-27430/org.videolan.vlc.debug D/VLC/medialibrary: [T#513542991024] ../src/parser/ParserWorker.cpp:204 mainloop [VLC] has 68 tasks remaining
2021-03-15 10:23:07.545 27037-27446/org.videolan.vlc.debug D/VLC/medialibrary: [T#513997454512] ../src/parser/ParserWorker.cpp:197 mainloop Resuming ParserService [Metadata] mainloop
2021-03-15 10:23:07.545 27037-27430/org.videolan.vlc.debug D/VLC/medialibrary: [T#513542991024] ../src/parser/ParserWorker.cpp:225 mainloop Executing VLC task on smb://AZABUNTU/Anonymous/audio/generated/1min%20%288e%20copie%29.mp3
2021-03-15 10:23:07.545 27037-27446/org.videolan.vlc.debug D/VLC/medialibrary: [T#513997454512] ../src/parser/ParserWorker.cpp:204 mainloop [Metadata] has 1 tasks remaining
2021-03-15 10:23:07.545 27037-27446/org.videolan.vlc.debug D/VLC/medialibrary: [T#513997454512] ../src/parser/ParserWorker.cpp:225 mainloop Executing Metadata task on smb://AZABUNTU/Anonymous/audio/generated/1min%20%287e%20copie%29.mp3
2021-03-15 10:23:07.555 27037-27446/org.videolan.vlc.debug D/VLC/medialibrary: [T#513997454512] ../src/metadata_services/MetadataParser.cpp:551 createFileAndMedia Adding smb://AZABUNTU/Anonymous/audio/generated/1min%20%287e%20copie%29.mp3
2021-03-15 10:23:07.567 27037-27446/org.videolan.vlc.debug D/VLC/medialibrary: [T#513997454512] ../src/parser/ParserWorker.cpp:247 mainloop Done executing Metadata task on smb://AZABUNTU/Anonymous/audio/generated/1min%20%287e%20copie%29.mp3 in 21ms. Result: 1
2021-03-15 10:23:07.571 27037-27446/org.videolan.vlc.debug D/VLC/medialibrary: [T#513997454512] ../src/parser/Parser.cpp:171 updateStats Updating progress: 39
2021-03-15 10:23:07.571 27037-27446/org.videolan.vlc.debug V/VLC/MediaParsingService: onParsingStatsUpdated: 39
2021-03-15 10:23:07.572 27037-27446/org.videolan.vlc.debug D/VLC/medialibrary: [T#513997454512] ../src/parser/ParserWorker.cpp:190 mainloop Halting ParserService [Metadata] mainloop
2021-03-15 10:23:07.655 27037-27972/org.videolan.vlc.debug E/VLC: [0000007908196560/6d44] libvlc stream: unimplemented query (264) in control
No file are created under /sdcard/Android/data/org.videolan.vlc.debug/files/medialib/thumbnails
except one for a m4a file.
The audio page query sends media with null for the artworkMrl
field.