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libfaac+mencoder: cannot set bitrate (want 32 kbps, get 58), ToS6×2: was “Bitrate setting” (useless) in General Audio (wrong forum)
hlzhang
post Sep 28 2011, 07:57
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I use libfaac with mencoder,and i found it can't set the bitrate of audio.
My Command :
mencoder input.avi -ovc copy -oac lavc -lavcopts acodec=libfaac:abitrate=32:aglobal=1 -o abc.flv

When finished,i check the abc.flv file :
Stream #0.1: Audio: aac, 44100 Hz, stereo, s16, 58 kb/s

But my setting is 32bit. Anyone who can help me to set the bitrate to 32kbps,thanks
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smok3
post Sep 28 2011, 10:40
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abitrate=32k ?

(just a wild guess from a working ffmpeg example: ffmpeg -i file.avi -vcodec libx264 -crf 21 -preset veryslow -tune film -threads 0 -acodec libvo_aacenc -ab 192k test4.mp4 )

This post has been edited by smok3: Sep 28 2011, 10:43


--------------------
PANIC: CPU 1: Cache Error (unrecoverable - dcache data) Eframe = 0x90000000208cf3b8
NOTICE - cpu 0 didn't dump TLB, may be hung
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LithosZA
post Sep 28 2011, 15:47
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I wouldn't recommend using libfaac for anything even at 192Kbit/s. Use Apple's or Nero's AAC encoders instead.
For 32Kbit/s you can use libaacplus so that you can get AAC-HE instead of AAC-LC, or Apple/Nero HE-AAC encoders.
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