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Re: [whatwg] HTML video and IE, Safari, Firefox, Chrome

From: Robert O'Callahan <robert@ocallahan.org>
Date: Wed, 5 Nov 2014 10:35:26 +1300
Message-ID: <CAOp6jLbU-togK7wRL=Zk0FqvkZZzdVGMHWnLNp1xRmU2WfBFcA@mail.gmail.com>
To: Martin Hoernig <hoernig@in.tum.de>
Cc: whatwg <whatwg@lists.whatwg.org>
On Wed, Nov 5, 2014 at 3:46 AM, Martin Hoernig <hoernig@in.tum.de> wrote:

> Thank you Rob!
>  I'm not sure what this means:
>>  Firefox fires the canplaythrough event after buffering is completed or
>>> halted instead of a bandwidth depending solution
>>>  Do you mean that even when the data is arriving at a very high rate, we
>> don't fire canplaythrough until all the data is downloaded?
> Yep.

I have a fix for that bug now. Thanks again.

>  You might want to test canplaythrough a bit more carefully; your tests
>> didn't find http://code.google.com/p/chromium/issues/detail?id=73609
>> (canplaythrough is basically unimplemented in Chrome; Chrome fires it
>> immediately after canplay in all circumstances, which causes problems for
>> other browsers).
> We have performed most of our tests in "high bandwidth" scenarios ("Since
> we know the network bit rate and the video bit rate, we can take the
> canplaythrough event as mandatory as well."). The only situation in which a
> difference exists is (4) reset, where playing has to be fired after canplay
> and right before canplaythrough. But, you are right, additional "low
> bandwidth" tests are a good addition. I'm thinking for example of a stall
> test ("The stall timeout is a user-agent defined length of time, which
> should be about three seconds.")

Low-bandwidth tests are particularly interesting to test because browser
developers tend to operate in high-bandwidth environments so don't pay
enough attention to low-bandwidth environments :-).

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Received on Tuesday, 4 November 2014 21:35:52 UTC

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