Re: [Helix-client-dev] aac+ bitrate reporting

I don't know of any for .aac, but for .m4a you can use QTAtomViewer. Just Google it to find a download site.

Eric

On May 28, 2010, at 3:17 AM, John Stirling wrote:

> Just trying to get hold of the test content they're using.
> 
> Also, do you know of any AAC/m4a file format inspection tools ?
> 
> 
> 
> Gregory Wright wrote:
>> On May 27, 2010, at 9:20 AM, Eric Hyche wrote:
>> 
>>   
>> 
>>> I haven't heard of this issue, but perhaps someone else on the list may have...
>>> 
>>> Eric
>>> 
>>> On May 27, 2010, at 12:09 PM, John Stirling wrote:
>>> 
>>>     
>>> 
>>>> We've had reports of the bitrate of aac+ content being reported wrongly
>>>> 
>>>> eg 400kbps is being reported as 64kbps
>>>>       
>>>> 
>> 
>> 
>> 400kbps sounds like audio+video, it is WAY too high for
>> audio only, so it seems anyway.
>> 
>> The 64kbps seems like a reasonable audio bitrate.
>> 
>> perhaps they are confusing the two?
>> 
>> There is some parts of the underlying code that uses per/channel
>> bits rates. It *might* be the case that you have multiple channels,
>> like 4-5, of 64kbps content? 
>> --greg.
>> 
>>   
>> 
> 
> 
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Eric Hyche ([email protected])
Principal Engineer
RealNetworks, Inc.