External subtitles

[lalkmim]

Do you think of supporting external subtitles (SRT files)? There are some apps that support this.

http://www.supportforum.philips.com/en/showthread.php?2704-DLNA-streaming-support-for-external-subtitle-files-srt&p=33833&viewfull=1#post33833

http://sourceforge.net/p/minidlna/discussion/879956/thread/6ae154be

[haku]

For reference, the samples linked above are:

<item id="V_T^INI_65^V_9" parentID="V_T^INI_65" restricted="1">
    <dc:title>Arzak Rhapsody 01</dc:title>
    <upnp:class>object.item.videoItem</upnp:class>
    <res protocolInfo="http-get:*:video/x-msvideoLNA.ORG_PN=AVI;DLNA.ORG_OP=01;DLNA.ORG_CI=0;DLNA.O RG_FLAGS=01500000000000000000000000000000">http://192.168.178.27:8895/resource/9/MEDIA_ITEM/AVI*0</res>
    <res protocolInfo="http-get:*:image/jpegLNA.ORG_PN=JPEG_TN;DLNA.ORG_OP=00;DLNA.ORG_CI=1;DL NA.ORG_FLAGS=00D00000000000000000000000000000">http://192.168.178.27:8895/resource/9/COVER_IMAGE</res>
    <res protocolInfo="http-get:*:text/srt:*">http://192.168.178.27:8895/resource/9/SUBTITLE.srt</res>
</item>

<DIDL-Lite xmlns="urn:schemas-upnp-org:metadata-1-0/DIDL-Lite/" xmlns:sec="http://www.sec.co.kr/dlna" xmlns:dlna="urn:schemas-dlna-org:metadata-1-0/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:upnp="urn:schemas-upnp-org:metadata-1-0/upnp/">
<item id="1_10_22_23" parentID="1_10_22" restricted="0">
    <res sec:acodec="dca" sec:vcodec="h264" duration="01:58:09" resolution="1920x800" size="8520673418" protocolInfo="http-get:*:video/x-mkv:DLNA.ORG_OP=01;DLNA.ORG_CI=0;DLNA.ORG_FLAGS=01500000000000000000000000000000">http://192.168.0.191:17679/FileProvider/M$7089000/O$1/S$41.srt/P$/I$video/x-mkv/41</res>
    <res resolution="160x66" size="3471" protocolInfo="http-get:*:image/jpeg:DLNA.ORG_PN=JPEG_TN;DLNA.ORG_CI=1;DLNA.ORG_FLAGS=00D00000000000000000000000000000">http://192.168.0.191:17679/FileProvider/M$0/O$0/S$/P$JPEG_TN/I$image/jpeg/44</res>
    <res resolution="640x266" size="22419" protocolInfo="http-get:*:image/jpeg:DLNA.ORG_PN=JPEG_SM;DLNA.ORG_CI=1;DLNA.ORG_FLAGS=00D00000000000000000000000000000">http://192.168.0.191:17679/FileProvider/M$0/O$0/S$/P$JPEG_SM/I$image/jpeg/43</res>
    <sec:CaptionInfoEx sec:type="srt">http://192.168.0.191:17679/SubtitleProvider/41.SRT</sec:CaptionInfoEx>
    <upnp:playbackCount>0</upnp:playbackCount><sec:dcmInfo>CREATIONDATE=1321142739,FOLDER=The Change-Up,BM=72</sec:dcmInfo><sec:modifiationDate>2011-11-13T01:05:39</sec:modifiationDate>
    <sec:preference>0</sec:preference><dc:date>2011-11-13T01:05:39</dc:date><upnp:class>object.item.videoItem</upnp:class><dc:title>The.Change-Up.UNRATED.1080p.BluRay.x264-BLOW</dc:title><sec:MetaFileInfo sec:type="mta">http://192.168.0.191:17679/FileProvider/45</sec:MetaFileInfo><upnp:objectUpdateID>26</upnp:objectUpdateID><sec:initUpdateID>26</sec:initUpdateID>
</item>
</DIDL-Lite>

<DIDL-Lite xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:upnp="urn:schemas-upnp-org:metadata-1-0/upnp/" xmlns="urn:schemas-upnp-org:metadata-1-0/DIDL-Lite/" xmlns:dlna="urn:schemas-dlna-org:metadata-1-0/">
<item id="64$6$0" parentID="64$6" restricted="1">
    <dc:title>The.Change-Up.UNRATED.1080p.BluRay.x264-BLOW</dc:title>
    <upnp:class>object.item.videoItem</upnp:class>
    <dc:date>2011-11-13T01:05:39</dc:date>
    <res size="8520673418" duration="1:58:09.088" bitrate="192000" sampleFrequency="48000" nrAudioChannels="6" resolution="1920x800" protocolInfo="http-get:*:video/x-matroska:DLNA.ORG_OP=01;DLNA.ORG_CI=0">http://192.168.0.198:8200/MediaItems/29.mkv</res>
</item>
</DIDL-Lite>

Basically just add the srt as an extra stream resource. One example includes an CaptionInfoEx element, but seems not all renderers need this. My one quick test shows that BubbleUPNP on Android does not need CaptionInfoEx.

As a first pass at solving this, I will just add the extra stream resource and see what renderers work ok.

[haku]

Also note, this first test impl assume that the srt files have the exact same path except for extension and that the extension is lower case. e.g.

/foo/bar/video.mp4
/foo/bar/video.srt

If this works OK I will fix up the requirement for lower case extensions.

[lalkmim]

Nice! I believe the first example is more "standard" and should be the one to follow, as I use MiniDLNA at home and it works well with my devices (Samsung TV and 8player on iPad).

[lalkmim]

Also, not exactly a pattern, but there are some players that can understand multiple external subtitles, as long as they are .en.srt, .pt.srt, etc.

Don't know much about this because I just use one subtitle, but I've seen multiple subtitles around a few times.

/foo/bar/video.mp4
/foo/bar/video.en.srt
/foo/bar/video.es.srt
/foo/bar/video.pt.srt

[haku]

Subtitle files ending like '.en.srt' might now work ok. Some testing required.