Thanks Zip  for your response.
This is regarding Vimeo Plugin  for the folllowing  rss feed:
http://vimeo.com/channels/saisouljourns/videos/rssI am able to see the folder  in my Sony TV  but folder is empty.  I am using Windows XP  version of Serviio.
Is this  problem  due  to  slow internet connection?   May be some  channels like "stereoscopy"  or "hd are  retrieved immediately so that their contents appear and the channel like "saisouljourns" respond a bit slow  causing this problem?
I am pasting  excerpts of the log as follows:
2012-01-10 07:00:24,484 WARN  [FeedUpdaterThread] Failed to retrieve online item information for 
http://vimeo.com/moogaloop/play/clip:33 ... 8992/?q=hd. It might not play.
java.io.IOException: org.serviio.library.local.metadata.extractor.InvalidMediaFormatException: Unknown video file type.
	at org.serviio.library.online.metadata.FeedUpdaterThread.retrieveAVMetadata(FeedUpdaterThread.java:272)
	at org.serviio.library.online.metadata.FeedUpdaterThread.retrieveTechnicalMetadata(FeedUpdaterThread.java:208)
	at org.serviio.library.online.metadata.FeedUpdaterThread.run(FeedUpdaterThread.java:101)
Caused by: org.serviio.library.local.metadata.extractor.InvalidMediaFormatException: Unknown video file type.
	at org.serviio.library.metadata.FFmpegMetadataRetriever.validateCodecsFound(FFmpegMetadataRetriever.java:344)
	at org.serviio.library.metadata.FFmpegMetadataRetriever.retrieveMetadata(FFmpegMetadataRetriever.java:87)
	at org.serviio.library.online.metadata.FeedUpdaterThread.retrieveAVMetadata(FeedUpdaterThread.java:254)
	... 2 more
2012-01-10 07:00:27,078 WARN  [FeedUpdaterThread] Failed to retrieve online item information for 
http://vimeo.com/moogaloop/play/clip:33 ... 8993/?q=hd. It might not play.
java.io.IOException: org.serviio.library.local.metadata.extractor.InvalidMediaFormatException: Unknown video file type.
	at org.serviio.library.online.metadata.FeedUpdaterThread.retrieveAVMetadata(FeedUpdaterThread.java:272)
	at org.serviio.library.online.metadata.FeedUpdaterThread.retrieveTechnicalMetadata(FeedUpdaterThread.java:208)
	at org.serviio.library.online.metadata.FeedUpdaterThread.run(FeedUpdaterThread.java:101)
Caused by: org.serviio.library.local.metadata.extractor.InvalidMediaFormatException: Unknown video file type.
	at org.serviio.library.metadata.FFmpegMetadataRetriever.validateCodecsFound(FFmpegMetadataRetriever.java:344)
	at org.serviio.library.metadata.FFmpegMetadataRetriever.retrieveMetadata(FFmpegMetadataRetriever.java:87)
	at org.serviio.library.online.metadata.FeedUpdaterThread.retrieveAVMetadata(FeedUpdaterThread.java:254)