Re: revised recording proposal

On 11/28/2012 05:08 AM, Mandyam, Giridhar wrote:
>
> Hello,
>
> I'll echo what has been stated in that I also like where this is headed.
>
> 1.It has already been pointed out that an onrecordingerror event 
> handler needs to be specified in the IDL.
>
> 2.timeSlice appears to be optional from the developer perspective, but 
> would it be permissible for a minimum timeSlice to be used from the UA 
> perspective?  In other words, when the developer does not specify a 
> timeSlice, can the UA still return data at pre-set intervals?
>
> 3.To clarify, is the returned Blob consistent with the definition in 
> http://www.w3.org/TR/FileAPI/#dfn-Blob? If so, we run a risk of having 
> a dependency on a spec that has not progressed significantly along in 
> standardization.
>
We're already depending on HTML5 (for <video>, among other things), and 
HTML5 in turn depends on Blob, so I don't think we're adding any risk here.
>
> 4.If we are in fact staying consistent with the Blob definition in 
> File API, then it would seem to me that the Formats dictionary as 
> defined should be consistent with how content types are indicated with 
> Blobs. Media type as defined in RFC 2046 should be sufficient in this 
> case, and is leveraged for the current definition of Blob.type.
>
> 5.Can you (or anyone else on the mailing list) articulate why a Blob 
> is returned versus an ArrayBuffer?
>
> 6.That being said, I think at least for Version 1 of this spec the 
> group should consider having the recording directly write to a file (a 
> la Android MediaRecorder - 
> http://developer.android.com/reference/android/media/MediaRecorder.html or 
> iOS AVAudioRecorder - 
> http://developer.apple.com/library/ios/#documentation/AVFoundation/Reference/AVAudioRecorder_ClassReference/Reference/Reference.html) 
> and move a Blob-based recording interface to Version 2.
>
Were you thinking of using the File interface (the same spec you 
referred to), or of something else?

Javascript in general is isolated from the file system.

              Harald