- From: Thierry MICHEL <tmichel@w3.org>
- Date: Wed, 27 Jul 2011 18:09:21 +0200
- To: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
- CC: joakim.soderberg@ericsson.com, soohongp@gmail.com, Felix Sasaki <felix.sasaki@dfki.de>, "Evain, Jean-Pierre" <evain@ebu.ch>, "public-media-annotation@w3.org" <public-media-annotation@w3.org>
- Message-ID: <4E303831.4000603@w3.org>
Le 27/07/2011 13:38, Silvia Pfeiffer a écrit : > On Wed, Jul 27, 2011 at 6:29 PM, Thierry Michel<tmichel@w3.org> wrote: >> Sylvia, >> >> see my responses in line. >>>> >>>> Do you at least agree that we must provide RDF file that are valid >>>> against >>>> our Ontology ? Because this is our goal. >>> >>> >>> Mine validated when I sent them through, see >>> http://lists.w3.org/Archives/Public/public-media-annotation/2011Jun/0058.html >> >> Your file validated the *RDF validator*. This means they were syntaxlly >> correct. It does not mean they are valid against our Ontology. >> Just like an XML file is well formed it does not mean it validates against >> its DTD or schema. Please try to understand the difference here and our >> goal: We must publish RDF files to the world that are conformant to our >> Ontology. > > I understand. And that's exactly the part that a central editor should > be looking after rather than having distributed editors. Theoretically yes, but practically ... If there is a volunteer, it would be very good news Are you willing to do that central editor task ? > > >>>> When all the files are provided. We decided that we would assign >>>> reviwer(s) to make sure the files do validate. Meanwhile it is up to the >>>> editors to provide complete and conformant files to the guideline. >>> >>> OK, maybe text files can be extended to cover all of the metadata that >>> you are asking for. That's not so simple for binary media files. I've >>> done what I can to put metadata in there. Then I wrote the RDF files >>> that represent the content of the media files and made sure they >>> validated, see >>> http://lists.w3.org/Archives/Public/public-media-annotation/2011Jun/0058.html >> >> Again here please read what the WG requests. We never requested to cover >> all of the metadata,as I have already explained to you. Furthermore we >> said if you are missing properties, you should provide the HTML table with >> the column 'RDF-tested' showing which properties you have used in your >> example. > > I have sent this information mostly on the 15th May for Ogg and 30th > May for WebM. Here are some more details: I have tried to fill the "RDF tested" column from the mapping table for OGG, OGG-container and WebM (see attached files). What you provide in the following does not use the Descriptive Properties (Core Set), therefore it is difficult for me to do a mapping. I could only guess for some of them and have updated the HTML files (see attached files). For OGG TITLE --> title (RDF-tested:Yes) DATE: --> date (RDF-tested:Yes) LOCATION: --> location (RDF-tested:Yes) COPYRIGHT: --> copyright (RDF-tested:Yes) For OGG container none. For WebM Title: --> title (RDF-tested:Yes) Duration: --> duration (RDF-tested:Yes) Language: --> language (RDF-tested:Yes) Please add the appropriate information in these 3 HTML files. Now for your 2 RDF files http://www.w3.org/2008/WebVideo/Annotations/drafts/metadata_formats/DougExample_ogv.rdf http://www.w3.org/2008/WebVideo/Annotations/drafts/metadata_formats/DougExample_webm.rdf Looking at them, they seem fine (with my very small RDF/OWL expertise) I have tried to open it with Protégé. I get a long list of java.awt errors. see attached screen shot I have no idea what this is. I have zero expertise with Protégé. Maybe someone can help here. > > For Ogg I have: > > $oggz-info DougExample.ogv > Content-Duration: 00:00:55.488 > > Skeleton: serialno 1126212808 > 6 packets in 5 pages, 1.2 packets/page, 16.846% Ogg overhead > Presentation-Time: 0.000 > Basetime: 0.000 > > Theora: serialno 1855169613 > 1390 packets in 172 pages, 8.1 packets/page, 0.660% Ogg overhead > Theora-Version: 3.2.1 > Video-Framerate: 25.000 fps > Video-Width: 352 > Video-Height: 576 > > Vorbis: serialno 1504128350 > 5014 packets in 203 pages, 24.7 packets/page, 2.008% Ogg overhead > Audio-Samplerate: 48000 Hz > Audio-Channels: 2 > > and > > $oggz-comment -l DougExample.ogv > Theora: serialno 1855169613 > Vendor: Xiph.Org libtheora 1.1 20090822 (Thusnelda) > TITLE: W3C and Twitter > DATE: 2009-10-08 > LOCATION: Sydney > ORGANIZATION: Web Directions South > COPYRIGHT: CC-BY-SA > CONTACT: silviapfeiffer1@gmail.com > ENCODER: ffmpeg2theora-0.27 > SOURCE_OSHASH: 03074c4cc029a79f > Vorbis: serialno 1504128350 > Vendor: Xiph.Org libVorbis I 20090709 > TITLE: W3C and Twitter > DATE: 2009-10-08 > LOCATION: Sydney > ORGANIZATION: Web Directions South > COPYRIGHT: CC-BY-SA > CONTACT: silviapfeiffer1@gmail.com > ENCODER: ffmpeg2theora-0.27 > SOURCE_OSHASH: 03074c4cc029a79f > > > For WebM I chose basically the same information. > > Here is what is contained in the file: > > $mkvinfo DougExample.webm > + EBML head > |+ EBML version: 1 > |+ EBML read version: 1 > |+ EBML maximum ID length: 4 > |+ EBML maximum size length: 8 > |+ Doc type: webm > |+ Doc type version: 2 > |+ Doc type read version: 2 > + Segment, size 2130160 > |+ Seek head (subentries will be skipped) > |+ EbmlVoid (size: 28) > |+ Segment information > | + Timecode scale: 1000000 > | + Title: W3C and Twitter > | + Muxing application: Lavf52.64.2 > | + Writing application: Lavf52.64.2 > | + Segment UID: 0xaf 0xdd 0xbe 0x0b 0x4b 0x71 0xfe 0xb5 0x77 0xfe > 0xda 0x39 0x75 0xb0 0x30 0x78 > | + Duration: 55.500s (00:00:55.500) > |+ Segment tracks > | + A track > | + Track number: 1 > | + Track UID: 1 > | + Lacing flag: 0 > | + Language: en > | + Codec ID: V_VP8 > | + Track type: video > | + Default duration: 40.000ms (25.000 fps for a video track) > | + Video track > | + Pixel width: 352 > | + Pixel height: 576 > | + Display width: 768 > | + Display height: 576 > | + Interlaced: 0 > | + Name: video-1 > | + Enabled: 1 > | + Default flag: 1 > | + Forced flag: 0 > | + MinCache: 0 > | + Timecode scale: 1 > | + Max BlockAddition ID: 0 > | + Codec decode all: 1 > | + A track > | + Track number: 2 > | + Track UID: 2 > | + Lacing flag: 0 > | + Name: audio-1 > | + Language: en > | + Codec ID: A_VORBIS > | + Track type: audio > | + Audio track > | + Channels: 2 > | + Sampling frequency: 48000 > | + Bit depth: 16 > | + CodecPrivate, length 3554 > | + Enabled: 1 > | + Default flag: 1 > | + Forced flag: 0 > | + MinCache: 0 > | + Timecode scale: 1 > | + Max BlockAddition ID: 0 > | + Codec decode all: 1 > |+ EbmlVoid (size: 93) > |+ Cluster > > from which I extract: > > Title: W3C and Twitter > Duration: 55.500s (00:00:55.500) > > Video track: > Track number: 1 > Track UID: 1 > Name: video-1 > Language: en > Codec ID: V_VP8 > Track type: video > Default duration: 40.000ms (25.000 fps for a video track) > Pixel width: 352 > Pixel height: 576 > Display width: 768 > Display height: 576 > > Audio track: > Track number: 2 > Track UID: 2 > Name: audio-1 > Language: en > Codec ID: A_VORBIS > Track type: audio > Channels: 2 > Sampling frequency: 48000 > Bit depth: 16 > > > Hope this helps. > > Regards, > Silvia.
Attachments
- text/html attachment: container-WebM.htm
- text/html attachment: OGG.htm
- text/html attachment: container-OGG.htm
- image/gif attachment: Protege__Jul._27_.gif
Received on Wednesday, 27 July 2011 16:09:33 UTC