| function sortObjectAlphabetically(obj) { | |
| if (typeof obj !== 'object' || obj === null) { | |
| // Base case: obj is not an object, or is null | |
| return obj; | |
| } | |
| if (Array.isArray(obj)) { | |
| // If obj is an array, recursively sort its elements | |
| return obj.map((element) => sortObjectAlphabetically(element)); | |
| } |
| ffmpeg -c:v libvpx-vp9 -i [input_file.webm] -c:v hevc_videotoolbox -q:v 60 -allow_sw 1 -alpha_quality 0.7 -vtag hvc1 -movflags +faststart [output_file.mp4] | |
| # use -q:v to set quality, 60 should suffice | |
| # use -alpha_quality to adjust alpha channel quality | |
| # for more options, check | |
| # ffmpeg -h encoder=hevc_videotoolbox | |
| # ffmpeg version 4.4.1 Copyright (c) 2000-2021 the FFmpeg developers | |
| # built with Apple clang version 13.0.0 (clang-1300.0.29.3) |
First, enable NSColorSimulateHardwareAccent
defaults write -g NSColorSimulateHardwareAccent -bool YES
Then choose a color with NSColorSimulatedHardwareEnclosureNumber with a value between 3 and 8 inclusive.
defaults write -g NSColorSimulatedHardwareEnclosureNumber -int 4
git log -Sword
git log -Gword-G by default accepts a regex, while -S accepts a string, but it can be modified to accept regexes using the --pickaxe-regex.-S finds commits where the number of occurrences of "word" changed, while -G finds commits where "word" appears in the diff.-S<regex> --pickaxe-regex and -G<regex> do not do exactly the same thing.
| function nthIndex(str, pat, n){ | |
| let i= -1; | |
| while (n-- && i++ < str.length) { | |
| i = str.indexOf(pat, i); | |
| if (i < 0) break; | |
| } | |
| return i; | |
| } | |
| function lastNthIndex(str, pat, n) { |
| # Replace 34 from select=eq(n\,34) with any frame number. Frame starts from 0. | |
| ffmpeg -vcodec libvpx-vp9 -i input_file.webm -pix_fmt rgba -vf "select=eq(n\,34)" -vframes 1 output_file.png | |
| # To generate a png file for each frame, use something like "frames/%04d.png" as the output file name |
| # 下载安装 depot_tools | |
| git clone 'https://chromium.googlesource.com/chromium/tools/depot_tools.git' | |
| export PATH="${PWD}/depot_tools:${PATH}" | |
| # 下载 skia | |
| git clone https://skia.googlesource.com/skia.git | |
| cd skia | |
| python2 tools/git-sync-deps |
| var traps = { | |
| get(target, propName, receiver) { | |
| const val = Reflect.get(target, propName, receiver); | |
| if (typeof val === 'object' && val !== null) { | |
| return new Proxy(val, traps); | |
| } | |
| else { | |
| return val; | |
| } | |
| }, |
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| # vb, minrate, maxrate are optional | |
| # also there're other options, check the man page | |
| qmelt path_to_mlt.xml -consumer avformat:output.mp4 vb=1200k minrate=500k maxrate=1900k |