Changes between Version 49 and Version 50 of Encode/HighQualityAudio

Timestamp:

Aug 11, 2016, 10:06:24 PM (10 years ago)

Author:

mjbrown

Comment:

mention VBR and the fact that the bitrates here are for CBR

Encode/HighQualityAudio

@@ -97 +97 @@
 == Recommended minimum bitrates to use ==
 
-The bitrates listed here assume 2-channel stereo and a sample rate of 44.1kHz or 48kHz. Mono may require fewer bits.[[BR]]
+The bitrates listed here assume 2-channel stereo and a sample rate of 44.1kHz or 48kHz. Mono, speech, and quiet audio may require fewer bits.[[BR]]
 - '''libopus''' Usable range >= 80Kbps. Recommended range '''>= 128Kbps'''[[BR]]
 - '''libfdk_aac default AAC LC profile.''' Recommended range '''>= 128Kbps'''; see [[Encode/AAC|AAC Encoding Guide]]. [[BR]]
@@ -125 +125 @@
 ----
 
-When compatibility with hardware players doesn't matter then use `libvorbis` in a MKV container rather than `libfaac` when `libfdk_aac` isn't available[[BR]]
-When compatibility with hardware players does matter then use libmp3lame or ac3 in a MP4/MKV container rather than `libfaac` when `libfdk_aac` isn't available[[BR]]
+Some codecs have a more efficient variable bitrate (VBR) mode which optimizes to a given, constant quality level rather than having variable quality at a given, constant bitrate (CBR). The info above is for CBR. VBR is more efficent than CBR but may not be as hardware-compatible.[[BR]]
+When compatibility with hardware players doesn't matter then use `libvorbis` in a MKV container rather than `libfaac` when `libfdk_aac` isn't available.[[BR]]
+When compatibility with hardware players does matter then use libmp3lame or ac3 in a MP4/MKV container rather than `libfaac` when `libfdk_aac` isn't available.[[BR]]
 Transparency means the encoded audio sounds indistinguishable from the audio in the source file.[[BR]]
 [[BR]]