Changes between Version 52 and Version 53 of Encode/HighQualityAudio
- Timestamp:
- Oct 4, 2016, 4:32:42 PM (8 years ago)
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Encode/HighQualityAudio
v52 v53 37 37 Windows Media Audio 1: wmav1 38 38 Windows Media Audio 2: wmav2 39 AAC LC: libfdk_aac, libfaac,aac39 AAC LC: libfdk_aac, aac 40 40 HE-AAC: libfdk_aac 41 41 Vorbis: libvorbis, vorbis … … 45 45 Based on quality produced from high to low:[[BR]] 46 46 {{{ 47 libopus > libvorbis >= libfdk_aac > aac > libmp3lame >= libfaac >=eac3/ac3 > libtwolame > vorbis > mp2 > wmav2/wmav147 libopus > libvorbis >= libfdk_aac > aac > libmp3lame >= eac3/ac3 > libtwolame > vorbis > mp2 > wmav2/wmav1 48 48 }}} 49 49 {{{#!comment … … 54 54 }}} 55 55 56 57 58 For AAC only: (Because it is a little bit confusing, with 3 encoders available)[[BR]] 56 For AAC-LC: 59 57 {{{ 60 libfdk_aac > aac > libfaac58 libfdk_aac > aac 61 59 }}} 62 60 … … 71 69 72 70 The '''>=''' sign means greater or the same quality.[[BR]] 73 Even though AAC should generally give better quality than MP3 at the same bitrates, libmp3lame should give better quality output than `libfaac`.[[BR]]74 71 This list is just a general guide and there may be cases where a codec listed to the right will perform better than one listed to the left at certain bitrates. [[BR]] 75 72 The highest quality internal/native encoder available in FFmpeg without any external libraries is aac.[[BR]] 76 73 77 Please note it is '''not recommended''' to use `vorbis` for Vorbis encoding; use `libvorbis` instead.[[BR]]74 Please note it is '''not recommended''' to use the experimental `vorbis` for Vorbis encoding; use `libvorbis` instead.[[BR]] 78 75 Please note that `wmav1` and `wmav2` don't seem to be able to reach transparency at any given bitrate.[[BR]] 79 76 … … 105 102 - '''libmp3lame''' Usable range >= 128Kbps. Recommended range '''-aq 2 (>= 192Kbps)'''[[BR]] 106 103 - '''ac3 or eac3''' Usable range >= 160Kbps. Recommended range '''>= 160Kbps'''[[BR]] 107 - '''libfaac''' Usable range >= 160Kbps. Recommended range '''-q:a 330 -cutoff 15000 (>= 192Kbps)'''.[[BR]] 104 108 105 Example of usage: 109 106 {{{ … … 125 122 ---- 126 123 127 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]]128 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]]124 When compatibility with hardware players doesn't matter then use `libvorbis` in a MKV container when `libfdk_aac` isn't available.[[BR]] 125 When compatibility with hardware players does matter then use libmp3lame or ac3 in a MP4/MKV container when `libfdk_aac` isn't available.[[BR]] 129 126 Transparency means the encoded audio sounds indistinguishable from the audio in the source file.[[BR]] 130 127 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 efficient than CBR but may not be as hardware-compatible.[[BR]]