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Wat's the difference between VBR and ABR?
is one better than the other??
is one better than the other??
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Re: Vbr/abr
Your Help file for mp3 Lame explains this thusly:
VBR seems to function by focusing on a given quality level and varying the bitrate to maintain that level of quality in accordance with the properties of the music. ABR tends to focus more on file size. In most situations, VBR is probably a better choice although whether you would notice any difference is questionable in most cases.Variable Bit Rate (VBR). Mp3 files are made up from 100's of small audio chunks, called frames. Whilst encoding VBR files the encoder decides which bit rate to use for each frame. Bit rates can drop down to lower value when it is warranted (if there is not much sound going on), and switch up to a higher bit rate when required. VBR files are great when a compromise between file size, and quality has to be made. VBR Options - a Minimum Bit Rate and a Maximum Bit Rate are specified by clicking the left and right mouse buttons on the green bit scale. Quality 'Low ---- High' controls the quality factor for VBR (higher quality larger files). Disable Bit Reservoir stops the carrying over of bit reservoir between frames, resulting in less space for audio (slightly lower sound quality), should only be used if audio player requires (very few should),
Average Bit Rate a little like VBR except with VBR the end file size is not known (could be small, could be big), ABR is VBR with known end file size, it works by regulating how variable the compression is, so at the end of the compressing the average is roughly the value specified.
Best wishes,
Bill -
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