- From: Jonas Sicking <jonas@sicking.cc>
- Date: Thu, 07 Aug 2008 12:11:11 -0700
Dave Singer wrote: > At 20:10 +1200 7/08/08, Chris Double wrote: >> On Thu, Aug 7, 2008 at 6:20 PM, Ian Hickson <ian at hixie.ch> wrote: >>> On Thu, 7 Aug 2008, Biju Gm at il wrote: >>>> >>>> On Thu, Aug 7, 2008 at 1:49 AM, Ian Hickson <ian at hixie.ch> wrote: >>>> > playbackRate is the right way to do it, but maybe Firefox doesn't >>>> yet >>>> > support it. >>>> >>>> So can I assume HTML5 spec also allow playbackRate to be negative >>>> value. >>>> ie to support go backward at various speed.... >>> >>> Yes. >> >> Would you expect the audio to be played backwards too? > > I think that's extra credit and optional. As you say, even with audio > coded in independent frames you have to flip the samples, which is a > pain. For audio with forward dependencies, correct decoding means > decoding forwards and then flipping whole chunks of timeline (though AAC > doesn't suffer too badly if you don't do this, by the way). Honestly, this seems useless enough that the spec should just say that when playback is less than 0 sound should be turned off. I'd hate to see engineers working on this just because "the spec says it should work that way". / Jonas
Received on Thursday, 7 August 2008 12:11:11 UTC