On Mon, Oct 20, 2014 at 10:58 AM, Brion Vibber <[email protected]> wrote:
> On Sun, Oct 19, 2014 at 9:47 AM, Brion Vibber <[email protected]> > wrote: > >> On Sun, Oct 19, 2014 at 9:33 AM, Michael Dale <[email protected]> >> 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.) [1] https://github.com/brion/ogv.js/commit/cad8ef8d067a509a2a18b4ed683e2c4a17b514e9 -- brion
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