[MP3 ENCODER] About ABR in 3.86, What has changed ?
this is strange... obiously something has changed in 3.86... C:\cdexbetalame.exe --abr 201 -b160 -h -mj f:\temp.wav f:\templame385.mp3LAME version 3.85 (www.sulaco.org/mp3)Win32 binaries from www.chat.ru/~dkutsanov/Using polyphase lowpass filter, transition band: 20805 Hz - 21339 HzEncoding f:\temp.wav to f:\templame185.mp3Encoding as 44.1 kHz average 201 kbps j-stereo MPEG1 LayerIII ( 7.0x) qval=2 Frame | CPU/estimated | time/estimated | play/CPU | ETA11489/ 11489(100%)| 0:00:52/ 0:00:52| 0:00:52/ 0:00:52| 5.8091| 0:00:00- bitrate statistics -[kbps] frames 32 0 (0.0%) 40 0 (0.0%) 48 0 (0.0%) 56 0 (0.0%) 64 0 (0.0%) 80 0 (0.0%) 96 0 (0.0%) 112 0 (0.0%) 128 0 (0.0%) 160 5256 (45.7%) 192 5782 (50.3%) 224 271 (2.4%) 256 131 (1.1%) 320 50 (0.4%) average: 179 kbs C:\cdexbetalame386.exe --abr 201 -b160 -h -mj f:\temp.wav f:\templame386.mp3LAME version 3.86 (www.sulaco.org/mp3)Win32 binaries from www.chat.ru/~dkutsanov/Using polyphase lowpass filter, transition band: 20805 Hz - 21339 HzEncoding f:\temp.wav to f:\templame186.mp3Encoding as 44.1 kHz average 201 kbps j-stereo MPEG1 LayerIII ( 7.0x) qval=2 Frame | CPU/estimated | time/estimated | play/CPU | ETA11489/ 11489(100%)| 0:00:50/ 0:00:50| 0:00:51/ 0:00:51| 5.9699| 0:00:00- bitrate statistics -[kbps] frames 32 0 (0.0%) 40 0 (0.0%) 48 0 (0.0%) 56 0 (0.0%) 64 0 (0.0%) 80 0 (0.0%) 96 0 (0.0%) 112 0 (0.0%) 128 0 (0.0%) 160 1874 (16.3%) 192 8990 (78.2%) 224 324 (2.8%) 256 205 (1.8%) 320 97 (0.8%) average: 190 kbs Why does 386 produce higher average bitrate ? Are there some probles/bugs with ABR in 386 ? This is probably good, but why is it like this ? there was some talk about a 10% bitreservoir, but this is only ~5%, weird Mark ? Takehiro ? Anyone ?
Re: [MP3 ENCODER] About ABR in 3.86, What has changed ?
this is strange... obiously something has changed in 3.86... C:\cdexbetalame.exe --abr 201 -b160 -h -mj f:\temp.wav f:\templame385.mp3 LAME version 3.85 (www.sulaco.org/mp3) Win32 binaries from www.chat.ru/~dkutsanov/ Using polyphase lowpass filter, transition band: 20805 Hz - 21339 Hz Encoding f:\temp.wav to f:\templame185.mp3 Encoding as 44.1 kHz average 201 kbps j-stereo MPEG1 LayerIII ( 7.0x) qval=2 average: 179 kbs C:\cdexbetalame386.exe --abr 201 -b160 -h -mj f:\temp.wav f:\templame386.mp3 LAME version 3.86 (www.sulaco.org/mp3) Win32 binaries from www.chat.ru/~dkutsanov/ Using polyphase lowpass filter, transition band: 20805 Hz - 21339 Hz Encoding f:\temp.wav to f:\templame186.mp3 Encoding as 44.1 kHz average 201 kbps j-stereo MPEG1 LayerIII ( 7.0x) qval=2 average: 190 kbs Why does 386 produce higher average bitrate ? Are there some probles/bugs with ABR in 386 ? This is probably good, but why is it like this ? there was some talk about a 10% bitreservoir, but this is only ~5%, weird Mark ? Takehiro ? Anyone ? Nothing sinister - I changed the tuning a little, trying to make "--abr N" give a result closer to N. The bits reserved for the reservoir now depends on the average bitrate specified, and varies from 5%-2% Mark -- MP3 ENCODER mailing list ( http://geek.rcc.se/mp3encoder/ )
