Thread: streamlink: an up to date fork of livestreamer
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Old 08-06-2017, 07:56 AM
j_cool j_cool is offline
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Re: streamlink: an up to date fork of livestreamer

Here is solution that reduces high CPU usage to normal when making .flv file with ffmpeg on youtube live stream:

Replace -c:v h264 with: -c:v copy

streamlink https://www.youtube.com/watch?v=y60wDzZt8yg 480p --stdout | ffmpeg -i pipe:0 -c:v copy -c:a aac c:\test.flv

Code:
ffmpeg version 3.3.2 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 7.1.0 (GCC)
  configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-zlib
  libavutil      55. 58.100 / 55. 58.100
  libavcodec     57. 89.100 / 57. 89.100
  libavformat    57. 71.100 / 57. 71.100
  libavdevice    57.  6.100 / 57.  6.100
  libavfilter     6. 82.100 /  6. 82.100
  libswscale      4.  6.100 /  4.  6.100
  libswresample   2.  7.100 /  2.  7.100
  libpostproc    54.  5.100 / 54.  5.100
[cli][info] Found matching plugin youtube for URL https://www.youtube.com/watch?v=y60wDzZt8yg
[cli][info] Available streams: 144p (worst), 240p, 360p, 480p, 720p, 1080p (best)
[cli][info] Opening stream: 480p (hls)
Input #0, mpegts, from 'pipe:0':
  Duration: N/A, start: 5145.132244, bitrate: N/A
  Program 1
    Stream #0:0[0x101]: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 138 kb/s
    Stream #0:1[0x100]: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709, progressive), 854x480 [SAR 1:1 DAR 427:240], 30 fps, 30 tbr, 90k tbn, 60 tbc
Stream mapping:
  Stream #0:1 -> #0:0 (copy)
  Stream #0:0 -> #0:1 (aac (native) -> aac (native))
Output #0, flv, to 'c:\test.flv':
  Metadata:
    encoder         : Lavf57.71.100
    Stream #0:0: Video: h264 (Main) ([7][0][0][0] / 0x0007), yuv420p(tv, bt709, progressive), 854x480 [SAR 1:1 DAR 427:240], q=2-31, 30 fps, 30 tbr, 1k tbn, 90k tbc
    Stream #0:1: Audio: aac (LC) ([10][0][0][0] / 0x000A), 48000 Hz, stereo, fltp, 128 kb/s
    Metadata:
      encoder         : Lavc57.89.100 aac
frame=  355 fps=0.0 q=-1.0 size=    2175kB time=00:00:11.83 bitrate=1505.1kbits/s speed=23.7x
Looks like that this was strain on CPU:

[libx264 @ 0000000002c5b2e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
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