Changes between Version 5 and Version 6 of Encode/MP3

Timestamp:

Jan 27, 2014, 6:12:09 PM (12 years ago)

Author:

Roger Pack

Comment:

never did test out the CBR stuff...

Encode/MP3

@@ -9 +9 @@
 
 ||||||= '''LAME Bitrate Overview''' =||
-|| Option || Kbit/s || Bitrate range kbit/s ||
-|| -b 320 || 320 || 320 CBR ||
-|| -V 0 || 245 || 220...260 ||
-|| -V 1 || 225 || 190...250 ||
-|| -V 2 || 190 || 170...210 ||
-|| -V 3 || 175 || 150...195 ||
-|| -V 4 || 165 || 140...185 ||
-|| -V 5 || 130 || 120...150 ||
-|| -V 6 || 115 || 100...130 ||
-|| -V 7 || 100 || 80...120 ||
-|| -V 8 || 85 || 70...105 ||
-|| -V 9 || 65 || 45...85 ||
+|| Option || Kbit/s || Bitrate range kbit/s || ffmpeg equiv.
+|| -b 320 || 320 || 320 CBR || -b:a 320k (NB this is 32KB/s)
+|| -V 0 || 245 || 220...260 || -q:a 0 (NB this is 22 to 26 KB/s, etc...)
+|| -V 1 || 225 || 190...250 || -q:a 1
+|| -V 2 || 190 || 170...210 || -q:a 2
+|| -V 3 || 175 || 150...195 || -q:a 3
+|| -V 4 || 165 || 140...185 || -q:a 4
+|| -V 5 || 130 || 120...150 || -q:a 5
+|| -V 6 || 115 || 100...130 || -q:a 6
+|| -V 7 || 100 || 80...120 || -q:a 7
+|| -V 8 || 85 || 70...105 || -q:a 8
+|| -V 9 || 65 || 45...85 || -q:a 9
 
 In 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.
@@ -26 +26 @@
 = CBR Encoding =
 
-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.
+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 (25.6 KB/s) audio.
 
 == Also see ==