Re: Different results in decodeAudioData?

So basically, this method i'm using is quite unreliable and useless, since
every browser (or even a version) can have its own varying method of
decoding?

2013/2/12 Raymond Toy <rtoy@google.com>

>
>
>
> On Tue, Feb 12, 2013 at 1:35 PM, Peter van der Noord <
> peterdunord@gmail.com> wrote:
>
>> > Were you running the same version of chrome at home and at work?
>>
>> I guess not, that would make the difference even weirder. i'll check the
>> versions tomorrow. i did try on both locations on both a regular version
>> and canary (how can i update the latter by the way?)
>>
>>
> I don't remember exactly when it happened, but the decoders changed in
> chrome so that under some conditions, the leading part of the decoded mp3
> and aac files are removed.  (These are artifacts of how the encoding
> process is done.)
>
> I normally just wait for canaries to update themselves, but I think you
> can go to  https://www.google.com/intl/en/chrome/browser/canary.html.
>
> Ray
>
>
>>
>> 2013/2/12 Raymond Toy <rtoy@google.com>
>>
>>>
>>>
>>>
>>> On Tue, Feb 12, 2013 at 6:40 AM, Peter van der Noord <
>>> peterdunord@gmail.com> wrote:
>>>
>>>> I'm creating a little music-engine where a collection of mp3's can be
>>>> grouped and seamlessly looped. Due to the nature of mp3s, this requires to
>>>> set the actual looping points of all mp3 in the decoded data beforehand, so
>>>> we know exactly which bytes to play.
>>>>
>>>> I set the looppoints for some testfiles at home, but when i checked the
>>>> project at work, i noticed that they were all placed incorrectly, so it
>>>> seems that different browsers can decode mp3files differently (this was all
>>>> in chrome btw). Is this just
>>>>
>>>
>>> Were you running the same version of chrome at home and at work?
>>>
>>>>  how it is, and will my method therefor not work crossbrowser (without
>>>> me having to set those looppoints for each brower+version)?
>>>>
>>>>
>>> I don't have a definitive answer for this, but some time ago, I created
>>> a little test<http://rtoy.github.com/webaudio-hacks/codec-tests/plot-audio.html>that plots some audio files.  If you look at the top of the plot, it lists
>>> how many samples were decoded for each file.  (The original source is
>>> exactly 1 sec of audio at 44.1kHz.)  I know this number varies between
>>> chrome and safari and may also vary between different versions of chrome.
>>>
>>> Ray
>>>
>>>
>>
>

Received on Tuesday, 12 February 2013 21:48:29 UTC