Changes between Version 15 and Version 16 of Encode/HighQualityAudio


Ignore:
Timestamp:
Apr 8, 2013, 10:52:15 PM (6 years ago)
Author:
lithosza
Comment:

--

Legend:

Unmodified
Added
Removed
Modified
  • Encode/HighQualityAudio

    v15 v16  
    8282Please note that the bitrates listed here assumes the input audio channels is Stereo and the sample rate is >= 44.1Khz. Mono could require less bits.[[BR]]
    8383
    84 - '''libopus''' Recommended usable range '''>= 64Kbps'''. Compression artifacts start becoming unnoticeable around 96Kbps[[BR]]
    85 - '''libfdk_aac default LC-AAC profile.''' Recommended usable range '''VBR level 3 to 5''' (http://ffmpeg.org/trac/ffmpeg/wiki/AACEncodingGuide). Compression artifacts start becoming unnoticeable around VBR level 3 (Around 96Kbps)[[BR]]
    86 - '''(libfdk_aac or libaacplus) -profile:a aac_he_v2''' Recommended usable range '''<= 48Kbps CBR'''. Transparency: Does not reach transparency. Use LC-AAC instead to achieve transparency[[BR]]
    87 - '''(libfdk_aac or libaacplus) -profile:a aac_he''' Recommended usable range '''>= 48Kbps and <= 80Kbps CBR'''. Transparency: Does not reach transparency. Use LC-AAC instead to achieve transparency[[BR]]
    88 - '''libvorbis''' Recommended usable range '''>= 96Kbps'''. Compression artifacts start becoming unnoticeable around 96Kbps[[BR]]
    89 - '''libmp3lame''' Recommended usable range '''>= 128Kbps'''. Compression artifacts start becoming unnoticeable around 128Kbps[[BR]]
    90 - '''ac3 or eac3''' Recommended usable range '''>= 192kbps'''. Compression artifacts start becoming unnoticeable around 192Kbps[[BR]]
    91 - '''libfaac''' Recommended usable range '''>= 192kbps'''. Compression artifacts start becoming unnoticeable around 192Kbps. Some samples still show some artifacts[[BR]]
    92 - '''libtwolame''' Recommended usable range '''>= 192kbps'''. Compression artifacts start becoming unnoticeable around 192Kbps[[BR]]
    93 - '''mp2''' Recommended usable range '''>= 192kbps'''. Artifacts not so annoying as other encoders. Compression artifacts start becoming unnoticeable around 320Kbps[[BR]]
    94 - '''aac''' Recommended usable range '''>= 300kbps'''. Compression artifacts start becoming unnoticeable around 300Kbps[[BR]]
    95 - '''vorbis''' Recommended usable range '''>= 280kbps'''. Compression artifacts start becoming unnoticeable around 280Kbps[[BR]]
    96 - '''wmav1 or wmav2''' Recommended usable range '''>= ????kbps'''. Does not reach transparency. Notice artifacts on every bitrate. Broken?[[BR]]
    97 - '''libvo_aacenc''' Recommended usable range '''>= ????kbps'''. Does not reach transparency. Notice artifacts on every bitrate. Broken? [[BR]]
     84- '''libopus''' Usable range '''>= 64Kbps'''. Recommended range >= 96Kbps[[BR]]
     85- '''libfdk_aac default LC-AAC profile.''' Recommended range '''(VBR level 3 to 5) or >= 96Kbps CBR''' (http://ffmpeg.org/trac/ffmpeg/wiki/AACEncodingGuide). [[BR]]
     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]]
     87- '''(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]]
     88- '''libvorbis''' Usable range '''>= 96Kbps'''. Recommended range >= 128Kbps[[BR]]
     89- '''libmp3lame''' Usable range '''>= 128Kbps'''. Recommended range >= 160Kbps[[BR]]
     90- '''ac3 or eac3''' Usable range '''>= 128kbps'''. Recommended range >= 160Kbps[[BR]]
     91- '''libfaac''' Usable range '''>= 192kbps'''. Recommended range >= 192Kbps.[[BR]]
     92- '''libtwolame''' Usable range '''>= 192kbps'''. Recommended range >= 192Kbps[[BR]]
     93
     94The '''mp2''', '''aac''', '''vorbis''', '''wmav1/wmav2''' and '''libvo_aacenc''' encoders are not worth using.[[BR]]
     95The '''wmav1/wmav2''' and '''libvo_aacenc''' encoders '''do not reach transparency at any bitrate'''.[[BR]]
     96The '''mp2''' and '''aac''' encoders can still reach transparency at very high bitrates around '''300Kbps'''.[[BR]]
     97The '''vorbis''' encoder does not use the bitrate specified in ffmpeg. Most of the times it does sound reasonable, but the bitrate is very high.
    9898----
    9999
     
    103103Transparency means the encoded audio sounds indistinguishable from the audio in the source file.[[BR]]
    104104[[BR]]
    105 TODO: Add ABC/HR tests.