@(隨筆記錄)[微信語(yǔ)音|silk|mp3|wav]
日期：2018年08月01日
環(huán)境：MacBook Pro纱控，macOS High Sierra 10.13.5(17F77)
引言：
奶奶八十多了瞒渠，經(jīng)常與我們微信互動(dòng)交流备禀，我覺(jué)得可以抽空記錄下奶奶的話宵蕉，也算是口述歷史，可以供兒孫輩翻閱看下蛙讥，從歷史的角度來(lái)了解先輩他們對(duì)世界候醒，對(duì)社會(huì)，對(duì)自己的看法哼绑。一定程度上也能反思下自己岩馍，自己的角色，自己的人生觀抖韩，自己的價(jià)值觀蛀恩，乃至歷史觀。
奶奶上過(guò)幾年學(xué)帽蝶，認(rèn)字對(duì)于日常的文字交流基本無(wú)障礙赦肋，但怕奶奶累著，我建議奶奶還是用語(yǔ)音來(lái)交流励稳。她給我發(fā)的語(yǔ)音佃乘，我想把它提取出來(lái)發(fā)至公眾號(hào)文章，所以需要處理微信語(yǔ)音的存儲(chǔ)格式驹尼，以及如何轉(zhuǎn)換的工具使用趣避。特撰寫(xiě)記錄下。
第一步：找到語(yǔ)音文件將其導(dǎo)出
1新翎、找到MAC微信語(yǔ)音程帕、小視頻和圖片等在本地保存位置地址
2住练、在對(duì)話界面右鍵圖片有打開(kāi)文件夾
3、Image之上的Audio目錄就是存儲(chǔ)的會(huì)話語(yǔ)音
可以看到其后綴是.silk
然后就可以拷貝導(dǎo)出了.
第二步：處理文件轉(zhuǎn)換為公眾號(hào)文章可以支持發(fā)布的格式
微信公眾號(hào)支持格式為mp3愁拭、wma讲逛、wav、amr
如果環(huán)境沒(méi)有安裝過(guò)homebrew
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
依賴(lài)
gcc
ffmpeg
看下環(huán)境有沒(méi)有g(shù)cc岭埠，如下則有
ZBMAC-C02VQ200H:Desktop dubiaoqi$ gcc --version
Configured with: --prefix=/Library/Developer/CommandLineTools/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 9.1.0 (clang-902.0.39.2)
Target: x86_64-apple-darwin17.6.0
Thread model: posix
InstalledDir: /Library/Developer/CommandLineTools/usr/bin
若無(wú)：
brew install gcc
安裝ffmpeg
brew install ffmpeg
git克隆silk-v3-decoder
git clone https://github.com/kn007/silk-v3-decoder.git silk-v3-decoder
嘗試轉(zhuǎn)換盏混，失敗了 :（ ，支持（收費(fèi)版Silk2MP3 1.0.1.0 發(fā)布）
https://kn007.net/topics/update-silk2mp3-to-official-version/
ZBMAC-C02VQ200H:Desktop dubiaoqi$ /data/app/silk-v3-decoder/converter.sh 82.aud.silk mp3
[Warning] Convert 82.aud.silk false, maybe not a silk v3 encoded file.
查文檔惜论，嘗試其它格式轉(zhuǎn)換
ZBMAC-C02VQ200H:silk-v3-decoder dubiaoqi$ cd silk/
ZBMAC-C02VQ200H:silk dubiaoqi$ ll
total 856
-rw-r--r-- 1 dubiaoqi wheel 3278 8 1 11:28 Makefile
-rwxr-xr-x 1 dubiaoqi wheel 97832 8 1 11:30 decoder
drwxr-xr-x 6 dubiaoqi wheel 192 8 1 11:28 interface
-rw-r--r-- 1 dubiaoqi wheel 335088 8 1 11:30 libSKP_SILK_SDK.a
drwxr-xr-x 269 dubiaoqi wheel 8608 8 1 11:30 src
drwxr-xr-x 6 dubiaoqi wheel 192 8 1 11:30 test
ZBMAC-C02VQ200H:silk dubiaoqi$ ./decoder /data/silk/82.aud.silk /data/1.pcm
********** Silk Decoder (Fixed Point) v 1.0.9.6 ********************
********** Compiled for 64 bit cpu *******************************
Input: /data/silk/82.aud.silk
Output: /data/1.pcm
Packets decoded: 3002
Decoding Finished
File length: 60.040 s
Time for decoding: 0.072 s (0.121% of realtime)
ZBMAC-C02VQ200H:silk dubiaoqi$ ffmpeg -y -f s16le -ar 24000 -ac 1 -i /data/1.pcm -f wav -ar 16000 -b:a 16 -ac 1 /data/1.wav
ffmpeg version 4.0.2 Copyright (c) 2000-2018 the FFmpeg developers
built with Apple LLVM version 9.1.0 (clang-902.0.39.2)
configuration: --prefix=/usr/local/Cellar/ffmpeg/4.0.2 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-gpl --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --enable-videotoolbox --disable-lzma
libavutil 56. 14.100 / 56. 14.100
libavcodec 58. 18.100 / 58. 18.100
libavformat 58. 12.100 / 58. 12.100
libavdevice 58. 3.100 / 58. 3.100
libavfilter 7. 16.100 / 7. 16.100
libavresample 4. 0. 0 / 4. 0. 0
libswscale 5. 1.100 / 5. 1.100
libswresample 3. 1.100 / 3. 1.100
libpostproc 55. 1.100 / 55. 1.100
[s16le @ 0x7faaef800000] Estimating duration from bitrate, this may be inaccurate
Guessed Channel Layout for Input Stream #0.0 : mono
Input #0, s16le, from '/data/1.pcm':
Duration: 00:01:00.00, bitrate: 384 kb/s
Stream #0:0: Audio: pcm_s16le, 24000 Hz, mono, s16, 384 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (pcm_s16le (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
[pcm_s16le @ 0x7faaee02b400] Bitrate 16 is extremely low, maybe you mean 16k
Output #0, wav, to '/data/1.wav':
Metadata:
ISFT : Lavf58.12.100
Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 16000 Hz, mono, s16, 256 kb/s
Metadata:
encoder : Lavc58.18.100 pcm_s16le
size= 1875kB time=00:01:00.00 bitrate= 256.0kbits/s speed=2.05e+03x
video:0kB audio:1875kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.004062%
ZBMAC-C02VQ200H:silk dubiaoqi$
成功Ｐ碓摺！馆类！silk轉(zhuǎn)換wav成功混聊！
相關(guān)鏈接
Homebrew: https://brew.sh/
FFmpeg官網(wǎng)：http://ffmpeg.org/
Git: https://git-scm.com/
致謝kn007開(kāi)源：
silk-v3-decoder：https://github.com/kn007/silk-v3-decoder
kn007的回答：https://www.v2ex.com/t/171735
