Changes between Version 5 and Version 6 of Encode/MP3


Ignore:
Timestamp:
Jan 27, 2014, 8:12:09 PM (5 years ago)
Author:
rogerdpack
Comment:

never did test out the CBR stuff...

Legend:

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  • Encode/MP3

    v5 v6  
    99
    1010||||||= '''LAME Bitrate Overview''' =||
    11 || Option || Kbit/s || Bitrate range kbit/s ||
    12 || -b 320 || 320 || 320 CBR ||
    13 || -V 0 || 245 || 220...260 ||
    14 || -V 1 || 225 || 190...250 ||
    15 || -V 2 || 190 || 170...210 ||
    16 || -V 3 || 175 || 150...195 ||
    17 || -V 4 || 165 || 140...185 ||
    18 || -V 5 || 130 || 120...150 ||
    19 || -V 6 || 115 || 100...130 ||
    20 || -V 7 || 100 || 80...120 ||
    21 || -V 8 || 85 || 70...105 ||
    22 || -V 9 || 65 || 45...85 ||
     11|| Option || Kbit/s || Bitrate range kbit/s || ffmpeg equiv.
     12|| -b 320 || 320 || 320 CBR || -b:a 320k (NB this is 32KB/s)
     13|| -V 0 || 245 || 220...260 || -q:a 0 (NB this is 22 to 26 KB/s, etc...)
     14|| -V 1 || 225 || 190...250 || -q:a 1
     15|| -V 2 || 190 || 170...210 || -q:a 2
     16|| -V 3 || 175 || 150...195 || -q:a 3
     17|| -V 4 || 165 || 140...185 || -q:a 4
     18|| -V 5 || 130 || 120...150 || -q:a 5
     19|| -V 6 || 115 || 100...130 || -q:a 6
     20|| -V 7 || 100 || 80...120 || -q:a 7
     21|| -V 8 || 85 || 70...105 || -q:a 8
     22|| -V 9 || 65 || 45...85 || -q:a 9
    2323
    2424In our example above, we selected `-qscale:a 2`, meaning we used LAME's option `-V2`, which gives us a VBR MP3 audio stream with an average stereo bitrate of 170-210 kBit/s.
     
    2626= CBR Encoding =
    2727
    28 If you need constant bitrate (CBR) MP3 audio, you need to use the `-b:a` option instead of `-qscale:a`. Here you can specify the number of bits per second, for example `-b:a 256k` if you want 256 kBit/s audio.
     28If you need constant bitrate (CBR) MP3 audio, you need to use the `-b:a` option instead of `-qscale:a`. Here you can specify the number of bits per second, for example `-b:a 256k` if you want 256 Kbit/s (25.6 KB/s) audio.
    2929
    3030== Also see ==