ffmpeg_old.json

{
  "scr": [
    "-loglevel", "error",
    "-re",
    "-f", "avfoundation", "-capture_cursor", "1", "-framerate", "24", "-i", "1",   //mac avfoundation ffmpeg capturer
    // "-f", "qtkit", "-i", "0",   //mac avfoundation ffmpeg capturer
    // "-f", "dshow", "-i", "video=screen-capture-recorder",   //windows dshow creen-capture-recorder
    // "-f", "gdigrab", "-i", "desktop",   //windows native capturer
    "-pix_fmt", "yuv420p",
    "-r", "24",
    "-vcodec", "libx264",
    "-pass", "1",
    "-coder", "0",
    "-bf", "0",
    "-wpredp", "0",
    "-b:v", "512K",
    "-crf", "27",
    // "-s", "1366x768",
    // "-s", "1024x768",
    // "-s", "1152x720",
    // "-s", "960x540",
    // "-s", "768x480",
    // "-s", "640x400",
    "-x264opts", "sync-lookahead=0:rc-lookahead=0:sliced-threads:no-mbtree:no-cabac:no-8x8dct:trellis=0:no-deblock:no-scenecut:no-mixed-refs:scenecut=0",
    // trellis=0:no-cabac:force-cfr:no-mixed-refs:no-8x8dct:scenecut=0:no-deblock",
    "-partitions", "none",
    "-threads", "4",
    "-flags", "-global_header", "-map", "0",
    "-flags", "-loop",
    "-thread_type", "frame",
    "-vbsf", "h264_mp4toannexb",
    "-movflags", "+faststart",
    "-an",
    "-f", "h264",
    "pipe:1"
  ],
  "aud": [
    "-loglevel", "error",
    "-re",
    // "-f", "dshow", "-i", "audio=virtual-audio-capturer",    // windows dshow virtual-audio-capturer
    "-f", "avfoundation", "-i", "none:0",    // mac soundflower audio capturer
    "-f", "mp3",    //  mp3 stream
    "-b:a", "128k",
    "-id3v2_version", "0",
    "-flush_packets", "1", "-fflags", "+nobuffer", "-async", "0",
    "-ac","2",
    "pipe:1"
  ]
}

// ffmpeg -re -f avfoundation -i "none:0" -acodec libmp3lame -map 0:a:0 -b:a 128k -f mp3 -id3v2_version 0 -ac 1 - | node stdinstreamer.js -port 9696 -type mp3 -burstsize 0

// ffmpeg -f avfoundation -audio_device_index 0 -i 1 -sample_rate 44100 -ac 2 -f mp3 -y out.mp3

// ffmpeg -f avfoundation -i 1 -r 30 -vcodec h264 -pass 1 -coder 0 -bf 0 -wpredp 0 -pix_fmt yuv420p -b:v 2m -crf 27 -x264opts sync-lookahead=0:rc-lookahead=0:sliced-threads:no-mbtree:no-cabac:no-8x8dct:trellis=0:no-deblock -partitions none -f h264 udp://127.0.0.1:1234

// ./build/Release/scap | ffmpeg -loglevel quiet -pix_fmt bgr0 -f rawvideo -s 1440x900 -i pipe:0 -crf 27 -vcodec h264 -pass 1 -coder 0 -bf 0 -wpredp 0 -pix_fmt yuv420p -x264opts sync-lookahead=0:rc-lookahead=0:sliced-threads:no-mbtree:no-cabac:no-8x8dct:trellis=0:no-deblock:no-scenecut:no-mixed-refs -partitions none -threads 4 -flags -loop -thread_type frame -f h264 -y out.h264