Changes between Version 19 and Version 20 of Encode/HighQualityAudio

Timestamp:

Apr 9, 2013, 5:07:50 PM (14 years ago)

Author:

Leon

Comment:

--

Encode/HighQualityAudio

@@ -86 +86 @@
 - '''(libfdk_aac or libaacplus) -profile:a aac_he_v2''' Usable range '''<= 48Kbps CBR'''. Transparency: Does not reach transparency. Use LC-AAC instead to achieve transparency[[BR]]
 - '''(libfdk_aac or libaacplus) -profile:a aac_he''' Usable range '''>= 48Kbps and <= 80Kbps CBR'''. Transparency: Does not reach transparency. Use LC-AAC instead to achieve transparency[[BR]]
-- '''libvorbis''' Usable range >= 96Kbps. Recommended range '''>= 128Kbps'''[[BR]]
-- '''libmp3lame''' Usable range >= 128Kbps. Recommended range '''>= 160Kbps'''[[BR]]
+- '''libvorbis''' Usable range >= 96Kbps. Recommended range '''-aq 4 (>= 128Kbps)'''[[BR]]
+- '''libmp3lame''' Usable range >= 128Kbps. Recommended range '''-aq 3 (>= 160Kbps)'''[[BR]]
 - '''ac3 or eac3''' Usable range >= 128kbps. Recommended range '''>= 160Kbps'''[[BR]]
-- '''libfaac''' Usable range >= 192kbps. Recommended range '''>= 192Kbps'''. Faint artifacts can still be heard on some samples.[[BR]]
+- '''libfaac''' Usable range >= 192kbps. Recommended range '''-q:a 330 -cutoff 16000 (>= 192Kbps)'''.[[BR]]
+Example of usage:
+{{{
+ffmpeg -i input.wav -c:a libfaac -q:a 330 -cutoff 16000 output.m4a
+}}}
 - '''libtwolame''' Usable range >= 192kbps. Recommended range '''>= 256Kbps'''[[BR]]
 
 The '''mp2''', '''aac''', '''vorbis''', '''wmav1/wmav2''' and '''libvo_aacenc''' encoders are not worth using.[[BR]]
 The '''wmav1/wmav2''' and '''libvo_aacenc''' encoders '''do not reach transparency at any bitrate'''.[[BR]]
-The '''mp2''' and '''aac''' encoders can still reach transparency at very high bitrates around '''300Kbps'''.[[BR]]
+The '''mp2''' and '''aac''' encoders can still reach transparency at very high bitrates around '''300Kbps'''. Use a cutoff of 15000Hz for aac[[BR]]
 The '''vorbis''' encoder does not use the bitrate specified in ffmpeg. Most of the times it does sound reasonable, but the bitrate is very high.[[BR]]
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