Pretty much got a proper core written for an Audio file processor now.
I have another simple question about MPEG Audio files.
Am I ever likely to encounter an MPEG Audio file which will contain AUDIO
frames which differ in VERSION, LAYER, SAMPLERATE and/or CHANNELS? Eg.
Some frames are 48KHz and other frames are 44.1KHz ...or some frames in
Stereo, some in Joint-Stereo?
I have been unable to find any documentation which explicitly states
whether this should or shouldn't be allowed by the MPEG standard, and
nothing to say explicitly whether any players do or don't support this
type of change.
There is no reason why not, the file would have a valid structure - but
it seems unlikely.
This is relevant to creating the Xing/Xing or Xing/Info frame for VBRFix.
Thanks for any help,
BC
Looking through the setup in Razorlame (a lame frontend for windows) there
is the ability to allow different 'block' sizes between channels, although
this is generally disabled. Another option give the ability to disable
using 'short blocks', suggesting that the default is to allow them. Having
stated this, I'm not too sure exactly what they are refering to with the
term 'blocks'. It may mean the same as frame but I don't know.
Thanks, I too use razorlame, and also have no idea what short or long
blocks are - and google isn't helping much either. LOL
BC
