- From: Raphaël Troncy <raphael.troncy@cwi.nl>
- Date: Tue, 06 Apr 2010 23:25:26 +0200
- To: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
- CC: Media Fragment <public-media-fragment@w3.org>
Hi Silvia, > If the UA is resolving it all without the help of the server, then > there should never be an error code coming from the server and it > would make little sense for the UA to pretend that such an error code > exists. Yes, naturally. In the case of http://www.w3.org/2008/WebVideo/Fragments/wiki/TemporalDimension, we assume a HTTP request has been issued. > Specifically for the case of 6.2.2 it would make sense for the UA to > notice that a>b and not even try to do a retrieval action. It should > simply just do nothing, just like a request for a fragment on a HTML > page where the fragment doesn't exist leads to no action. Indeed, that makes sense. Though, the "no action" could be disturbing for the user but I agree we should not over-specify the communication between the UA and the server. >> . 6.2.4 is equivalent to Test n°2 and 3 except that we return a 416 and not >> 200 > > See reasoning above for no HTTP activity and therefore no return code. OK. I would agree to that too. > 10, 11 and 12 have to be diversified based on whether a lies before or > after the beginning of the media resource. In fact, we need to > introduce something like s=start time and e=end time everywhere. Thus > we need to adapt/introduce the following: > > no5: t=a,b with s<=a, a<b, b<=e => play a to b > introduce no5a: t=a,b with a<s, a<b, s<b, b<=e => play s to b > introduce no5b: t=a,b with a<s, a<b, b<s, b<=e => empty fragment > (these include no6 now) > > no7: t=a,b with s<=a, a<b, a<e, b>e => play a to e > no7a: t=a,b with a<s, a<b, a<e, b>e => play s to e > no7b: t=a,b with a<b, a=>e, b>e => empty fragment > (this last one includes no8 and no9) > > no10: t=a, with a>=s, a<e => play a to e > no10a: t=a, with a<s, a<e => play s to e > > no14: t=,a with a>s, a< d => play s to a > no14a: t=,a with a<=s, a<d => empty fragment OK, so for all these test cases, you assume fairly that the start time of a media resource is not necessarily 0. Is this a frequent case? How many media files out there have this property? > Yup, listed above as a/b numbers and additional conditions to the ones > in the existing list. Mostly related to missing out on defining the > "start" time of the resource. I would add all these ones if the group feels it is necessary, i.e. there _are_ videos that will fall in these cases. Thanks for the comments! Cheers. Raphaël -- Raphaël Troncy EURECOM, Multimedia Communications Department 2229, route des Crêtes, 06560 Sophia Antipolis, France. e-mail: raphael.troncy@eurecom.fr & raphael.troncy@gmail.com Tel: +33 (0)4 - 9300 8242 Fax: +33 (0)4 - 9000 8200 Web: http://www.eurecom.fr/~troncy/
Received on Tuesday, 6 April 2010 21:26:50 UTC