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Rockbox mail archiveSubject: Re: MPEG Audio formatRe: MPEG Audio format
From: Bluechip <csbluechip_at_gmail.com>
Date: Sat, 14 Jan 2006 19:42:05 +0000 >>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 Received on 2006-01-14 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |