On Mon, Oct 20, 2014 at 10:58 AM, Brion Vibber <bvibber@wikimedia.org> wrote:On Sun, Oct 19, 2014 at 9:47 AM, Brion Vibber <bvibber@wikimedia.org> wrote:On Sun, Oct 19, 2014 at 9:33 AM, Michael Dale <mdale@wikimedia.org> wrote:
We can’t do http range requests against the ogg index byte / time mappings ?As I recall, XHR won't let us send 'Range' header without some CORS opt-in we haven't figured out how to get working right. If we can resolve that, should be able to rig up seeking & chunked streaming based on Range headers (this would also let us run large files without eating up memory in Safari).Woohoo, Faidon fixed the CORS bit with a Varnish tweak -- now allows OPTIONS requests through to the backend so the CORS preflight request can go and confirm that it's ok to send Range headers:Spent some weekend time on this and got both chunked streaming for Safari and a bisection-based seek working[1]. Haven't merged it into the TMH version yet as I'm not satisfied with the seek performance, but I have a pretty good idea how to seek based on Ogg Skeleton metadata by using liboggz on the C side and giving it custom i/o functions that manipulate the JS XHR wrapper.Of course, now I need to redesign the controls for the mobile overlay so there's a way to actually invoke the seeking. ;) (On desktop it should be able to use the existing controls in MwEmbedPlayer.)-- brion
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