Dear Synology & All,
I am a proud owner of a Synology 209j, together with a PINNACLE media player. All work like a charm, except subtitle support via DLNA. I have to say, I am missing this feature a lot.
I have started to investigate the subtitle issue, and created a debug/development tool, called DLNA Media Browser. This tool lets the user to browse any DLNA compliant media server content, inspect item properties and even dump XML traffic for later investigation.
I used this tool to test Synology, as well as Windows Media Player Sharing on Windows XP, Windows Media Player Sharing on Windows 7, Samsung's PC Share Manager, and TwonkyMedia, to see differences of their DLNA implementations.
The most problematic part is the lack of subtitle (in my case, SRT support) via DLNA. My media player seems not to support SRT subtitles via DLNA in Synology's way, but there's more: due the way Syno handles srt files, the media player gets completely confused and sometimes can not even start the video (I suspect it uses internal indexing which is confused by the srt videoitems).
So far I have not found any standards regarding DLNA vs. subtitles. In fact, everybody does it a different way:
- Windows Media Player Sharing 3.0 and 12.0 (on XP and Win7) seems not so support SRT subtitles at all
- TwonkyMedia introduced their own extensions to handle subtitles. When there is a video file and a related subtitle in the same folder, Twonky only reports the video file, but adds two special attributes (pv:subtitleFileType, pv:subtitleFileUri) to the res element.
- Samsung also introduced their vendor-specific extensions in PC Share Manager (sec:CaptionInfoEx)
- Synology reports the video file and the srt file as two separate files; however both share the same name (title) and only the res ContentType part refers to the mimetype of the object.
You can check screenshots of the tool at http://picasaweb.google.com/miklos.fulop/DLNAMediaBrowser
- PM me if you'd like to help with using this tool and dumping XML from various media servers.
I have no idea about how current Media Players handle subtitles via DLNA; but it seems there is no standard way doing this. In a few days, I will also receive a MEDE8ER MED500X and check if some of the above works.
In a nutshell:(1) Please add configurable subtitle-support for DLNA.
(2) Please add albumArtUri for movies and/or videoItems
(when album.jpg, folder.jpg, about.jpg, etc. is found in the same folder as a video).
While I know this is non standard in ContentDirectory.1, there are various media players on the field which support displaying graphics while browsing for a video (see a sample about.jpg in my picasa album on the link above). This would be an easy addition.
albumArtUri for movie:videoItem is already supported and sent by Twonky.(3) Please add Search capability to the ContentDirectory implementation.
I know this is also an optional feature in ContentDirectory.1 but it would be extremely useful; also WMP and Twonky already support this.
I am interested in your opinions.