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  • FFMPEG - Why can't i record a video for more than 10 seconds ?

    12 février 2020, par gabriel

    I’m developing a screen recorder for windows with python but for some reason i can’t record the video for more than 10 seconds.However i can record the audio for more than 10 seconds.
    Also i’m using :

    FFMPEG - to record the video with mp4 extension

    PYAUDIO - to record the sound

    TKINTER - to design the GUI

    Since the problem is with the video recording i will leave the code that i used with ffmpeg :

    """
    
cmdGen.py generates ffmpeg commands to record your screen
    

    
"""
    
import os
    

    
class cmdGen:
    
    def __init__(self):
    
        self.fps = 60
    
        self.source = "desktop"
    
        self.encoder = 'mpeg4'
    
        self.hwaccel = None
    
        self.drawMouse = 1
    
        self.enableWebcam = False
    
        self.audList = 0
    
    def config(self,
    
                fps=None,source=None,encoder=None,
    
                hwaccel='unchanged',drawMouse=None,
    
                webcam=None,audList=None):
    
        if fps: self.fps = fps
    
        if source: self.source = source
    
        if encoder: self.encoder = encoder
    
        if hwaccel != 'unchanged': self.hwaccel = hwaccel
    
        if drawMouse: self.drawMouse = 0 if not self.drawMouse else 1
    
        if webcam: self.enableWebcam = bool(webcam)
    
        if audList: self.audList = audList
    
    def setSource(self,isWindow,windowName=""):
    
        if not isWindow:
    
            self.source = "desktop"
    
        else:
    
            self.source = "title="+windowName
    
    def setFps(self,fps):
    
        self.fps = fps
    
    def setEncode(self,encoder):
    
        self.encoder = encoder
    
    def getCmd(self,filename):
    
        print("ACK")
    
        finalCmd = ["ffmpeg.exe","-f","gdigrab"]
    
        finalCmd.extend(['-i',self.source])
    
        finalCmd.extend(['-framerate',str(self.fps)])
    
        finalCmd.extend(['-c:v',self.encoder])
    
        if self.encoder == 'mpeg4':
    
            finalCmd.extend(['-q:v','7'])
    
        if self.hwaccel: 
    
            finalCmd.extend(['-hwaccel',self.hwaccel])
    
        finalCmd.extend(['-draw_mouse',str(self.drawMouse)])
    
        finalCmd.extend(["-y", filename])
    
        print(finalCmd)
    
        return finalCmd
    
    def getCvtCmd(self,filename):
    
            # if self.rcchecked.get():
    
            #     self.mergeProcess = subprocess.Popen(args= ["ffmpeg","-i",'tmp/tmp.mkv','-i','tmp/tmp.wav','-i','tmp/webcamtmp.mkv','-filter_complex','[2:v] scale=640:-1 [inner]; [0:0][inner] overlay=0:0 [out]',"-shortest",'-map','[out]','-y',"ScreenCaptures/"+self.filename])
    
            # else:
    
            #     self.mergeProcess = subprocess.Popen(args= ["ffmpeg","-i",'tmp/tmp.mkv','-i','tmp/tmp.wav',"-shortest",'-y',"ScreenCaptures/"+self.filename], startupinfo=startupinfo)
    
        print("ACK")
    
        finalCmd = ["ffmpeg.exe"]
    
        finalCmd.extend(['-i','tmp/tmp.mkv'])
    
        for i in range(len(self.audList)):
    
            finalCmd.extend(['-i','tmp/tmp_'+str(i)+'.wav'])
    
        if len(self.audList) > 0:
    
            finalCmd.extend(['-filter_complex','amerge=inputs='+str(len(self.audList)),'-ac',str(len(self.audList))])
    
        # finalCmd.extend(['-c:v',self.encoder])
    
        if self.enableWebcam:
    
            finalCmd.extend(['-i','tmp/webcamtmp.mkv','-filter_complex','[2:v] scale=640:-1 [inner]; [0:0][inner] '
    
                                                                        'overlay=0:0 [out]','-map','[out]'])
    

    
        #finalCmd.extend(['-shortest'])
    
        finalCmd.extend(["-y", filename])
    
        print(finalCmd)
    
        return finalCmd
    

    
if __name__ == "__main__":
    
    cg = cmdGen()
    
    cg.setEncode("h264_nvenc")
    
    cg.setFps(60)
    
    cg.setSource(False)
    
    print(cg.getCmd("tmp"))

    Thanks guys

    Full log trying to record 1 minute :

    C:\Users\FabianoFreitas\AppData\Local\Programs\Python\Python37\python.exe C:/Users/FabianoFreitas/Desktop/PowerShare-v2.0/screenRecorder.py
    
ACK
    
['ffmpeg.exe', '-f', 'gdigrab', '-i', 'desktop', '-framerate', '60', '-c:v', 'mpeg4', '-q:v', '7', '-draw_mouse', '1', '-y', 'tmp/tmp.mkv']
    
* recording
    
ACK
    
['ffmpeg.exe', '-i', 'tmp/tmp.mkv', '-i', 'tmp/tmp_0.wav', '-filter_complex', 'amerge=inputs=1', '-ac', '1', '-y', 'Videos/ScreenCapture24.mp4']
    
* done recording
    
ffmpeg version git-2020-02-05-e6891d1 Copyright (c) 2000-2020 the FFmpeg developers
    
  built with gcc 9.2.1 (GCC) 20200122
    
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
    
  libavutil      56. 39.100 / 56. 39.100
    
  libavcodec     58. 67.101 / 58. 67.101
    
  libavformat    58. 37.100 / 58. 37.100
    
  libavdevice    58.  9.103 / 58.  9.103
    
  libavfilter     7. 74.100 /  7. 74.100
    
  libswscale      5.  6.100 /  5.  6.100
    
  libswresample   3.  6.100 /  3.  6.100
    
  libpostproc    55.  6.100 / 55.  6.100
    
Input #0, matroska,webm, from 'tmp/tmp.mkv':
    
  Metadata:
    
    ENCODER         : Lavf58.37.100
    
  Duration: N/A, start: 0.000000, bitrate: N/A
    
    Stream #0:0: Video: mpeg4 (Simple Profile), yuv420p, 2560x1080 [SAR 1:1 DAR 64:27], 29.97 fps, 29.97 tbr, 1k tbn, 30k tbc (default)
    
    Metadata:
    
      ENCODER         : Lavc58.67.101 mpeg4
    
Guessed Channel Layout for Input Stream #1.0 : stereo
    
Input #1, wav, from 'tmp/tmp_0.wav':
    
  Duration: 00:01:09.08, bitrate: 1411 kb/s
    
    Stream #1:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, s16, 1411 kb/s
    
Stream mapping:
    
  Stream #1:0 (pcm_s16le) -> amerge (graph 0)
    
  amerge (graph 0) -> Stream #0:0 (aac)
    
  Stream #0:0 -> #0:1 (mpeg4 (native) -> h264 (libx264))
    
Press [q] to stop, [?] for help
    
[Parsed_amerge_0 @ 00000218cb4c1640] No channel layout for input 1
    
[libx264 @ 00000218cb4acdc0] using SAR=1/1
    
[libx264 @ 00000218cb4acdc0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
    
[libx264 @ 00000218cb4acdc0] profile High, level 5.0, 4:2:0, 8-bit
    
[libx264 @ 00000218cb4acdc0] 264 - core 159 - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, mp4, to 'Videos/ScreenCapture24.mp4':
    
  Metadata:
    
    encoder         : Lavf58.37.100
    
    Stream #0:0: Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 69 kb/s
    
    Metadata:
    
      encoder         : Lavc58.67.101 aac
    
    Stream #0:1: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 2560x1080 [SAR 1:1 DAR 64:27], q=-1--1, 29.97 fps, 30k tbn, 29.97 tbc (default)
    
    Metadata:
    
      encoder         : Lavc58.67.101 libx264
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
    
[matroska,webm @ 00000218cb44af00] File ended prematurely
    
frame=  297 fps=113 q=-1.0 Lsize=    2325kB time=00:01:09.07 bitrate= 275.8kbits/s dup=22 drop=0 speed=26.2x    
    
video:1713kB audio:591kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.900237%
    
[aac @ 00000218cb4ab780] Qavg: 24995.135
    
[libx264 @ 00000218cb4acdc0] frame I:4     Avg QP:15.13  size:199596
    
[libx264 @ 00000218cb4acdc0] frame P:85    Avg QP:21.15  size:  9466
    
[libx264 @ 00000218cb4acdc0] frame B:208   Avg QP:24.93  size:   725
    
[libx264 @ 00000218cb4acdc0] consecutive B-frames:  5.1%  2.7%  6.1% 86.2%
    
[libx264 @ 00000218cb4acdc0] mb I  I16..4: 48.0% 45.3%  6.7%
    
[libx264 @ 00000218cb4acdc0] mb P  I16..4:  1.6%  1.9%  0.8%  P16..4:  1.4%  0.4%  0.3%  0.0%  0.0%    skip:93.7%
    
[libx264 @ 00000218cb4acdc0] mb B  I16..4:  0.1%  0.1%  0.0%  B16..8:  3.0%  0.1%  0.0%  direct: 0.0%  skip:96.6%  L0:51.2% L1:48.3% BI: 0.6%
    
[libx264 @ 00000218cb4acdc0] 8x8 transform intra:44.4% inter:69.1%
    
[libx264 @ 00000218cb4acdc0] coded y,uvDC,uvAC intra: 23.8% 27.4% 19.5% inter: 0.2% 0.3% 0.1%
    
[libx264 @ 00000218cb4acdc0] i16 v,h,dc,p: 54% 45%  1%  0%
    
[libx264 @ 00000218cb4acdc0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 26% 20% 41%  2%  2%  1%  2%  1%  5%
    
[libx264 @ 00000218cb4acdc0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 35% 17%  2%  3%  3%  4%  2%  4%
    
[libx264 @ 00000218cb4acdc0] i8c dc,h,v,p: 61% 25% 11%  2%
    
[libx264 @ 00000218cb4acdc0] Weighted P-Frames: Y:0.0% UV:0.0%
    
[libx264 @ 00000218cb4acdc0] ref P L0: 68.0%  6.3% 16.6%  9.1%
    
[libx264 @ 00000218cb4acdc0] ref B L0: 70.2% 23.7%  6.1%
    
[libx264 @ 00000218cb4acdc0] ref B L1: 91.1%  8.9%
    
[libx264 @ 00000218cb4acdc0] kb/s:1415.80

  • pip install av produces a LINK 1181 error

    6 février 2020, par user8606643

    initially, pip install av asked me to download visual C++ 14 build tools which I did
    but it is still showing me LINK 1181 errors

    I need this pyAV pakcage which is obtained by pip install av for a project, but it always shows some kind of error linked with C++ and i also have ffmpeg installed.

    C:\Users\manop>pip install av
    
Collecting av
    
  Using cached av-7.0.0.tar.gz (2.3 MB)
    
Building wheels for collected packages: av
    
  Building wheel for av (setup.py) ... error
    
  ERROR: Command errored out with exit status 1:
    
   command: 'c:\users\manop\appdata\local\programs\python\python37\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\manop\\AppData\\Local\\Temp\\pip-install-rydo0uqj\\av\\setup.py'"'"'; __file__='"'"'C:\\Users\\manop\\AppData\\Local\\Temp\\pip-install-rydo0uqj\\av\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d 'C:\Users\manop\AppData\Local\Temp\pip-wheel-oti9y28m'
    
       cwd: C:\Users\manop\AppData\Local\Temp\pip-install-rydo0uqj\av\
    
  Complete output (38 lines):
    
  running bdist_wheel
    
  running build
    
  running build_py
    
  creating build
    
  creating build\lib.win-amd64-3.7
    
  creating build\lib.win-amd64-3.7\av
    
  copying av\datasets.py -> build\lib.win-amd64-3.7\av
    
  copying av\deprecation.py -> build\lib.win-amd64-3.7\av
    
  copying av\__init__.py -> build\lib.win-amd64-3.7\av
    
  copying av\__main__.py -> build\lib.win-amd64-3.7\av
    
  creating build\lib.win-amd64-3.7\av\audio
    
  copying av\audio\__init__.py -> build\lib.win-amd64-3.7\av\audio
    
  creating build\lib.win-amd64-3.7\av\codec
    
  copying av\codec\__init__.py -> build\lib.win-amd64-3.7\av\codec
    
  creating build\lib.win-amd64-3.7\av\container
    
  copying av\container\__init__.py -> build\lib.win-amd64-3.7\av\container
    
  creating build\lib.win-amd64-3.7\av\data
    
  copying av\data\__init__.py -> build\lib.win-amd64-3.7\av\data
    
  creating build\lib.win-amd64-3.7\av\filter
    
  copying av\filter\__init__.py -> build\lib.win-amd64-3.7\av\filter
    
  creating build\lib.win-amd64-3.7\av\sidedata
    
  copying av\sidedata\__init__.py -> build\lib.win-amd64-3.7\av\sidedata
    
  creating build\lib.win-amd64-3.7\av\subtitles
    
  copying av\subtitles\__init__.py -> build\lib.win-amd64-3.7\av\subtitles
    
  creating build\lib.win-amd64-3.7\av\video
    
  copying av\video\__init__.py -> build\lib.win-amd64-3.7\av\video
    
  running build_ext
    
  running config
    
  writing build\temp.win-amd64-3.7\Release\include\pyav\config.h
    
  running cythonize
    
  building 'av.buffer' extension
    
  creating build\temp.win-amd64-3.7\Release\src
    
  creating build\temp.win-amd64-3.7\Release\src\av
    
  C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.16.27023\bin\HostX64\x64\cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MD -Ic:\users\manop\appdata\local\programs\python\python37\include -Ibuild\temp.win-amd64-3.7\Release\include -Iinclude -Ic:\users\manop\appdata\local\programs\python\python37\include -Ic:\users\manop\appdata\local\programs\python\python37\include -Ibuild\temp.win-amd64-3.7\Release\include "-IC:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.16.27023\Include" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\ucrt" /Tcsrc\av\buffer.c /Fobuild\temp.win-amd64-3.7\Release\src\av\buffer.obj
    
  buffer.c
    
  C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.16.27023\bin\HostX64\x64\link.exe /nologo /INCREMENTAL:NO /LTCG /DLL /MANIFEST:EMBED,ID=2 /MANIFESTUAC:NO /LIBPATH:c:\users\manop\appdata\local\programs\python\python37\PCbuild\amd64 /LIBPATH:c:\users\manop\appdata\local\programs\python\python37\libs /LIBPATH:c:\users\manop\appdata\local\programs\python\python37\libs /LIBPATH:c:\users\manop\appdata\local\programs\python\python37\PCbuild\amd64 "/LIBPATH:C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.16.27023\Lib\x64" "/LIBPATH:C:\Program Files (x86)\Windows Kits\10\lib\10.0.18362.0\um\x64" /LIBPATH:C:\WINDOWS\Microsoft.NET\Framework64\v4.0.30319 "/LIBPATH:C:\Program Files (x86)\Windows Kits\10\lib\10.0.18362.0\ucrt\x64" swresample.lib swscale.lib avdevice.lib avutil.lib avcodec.lib avformat.lib avfilter.lib /EXPORT:PyInit_buffer build\temp.win-amd64-3.7\Release\src\av\buffer.obj /OUT:build\lib.win-amd64-3.7\av\buffer.cp37-win_amd64.pyd /IMPLIB:build\temp.win-amd64-3.7\Release\src\av\buffer.cp37-win_amd64.lib /OPT:NOREF
    
  LINK : fatal error LNK1181: cannot open input file 'swresample.lib'
    
  error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Community\\VC\\Tools\\MSVC\\14.16.27023\\bin\\HostX64\\x64\\link.exe' failed with exit status 1181
    
  ----------------------------------------
    
  ERROR: Failed building wheel for av
    
  Running setup.py clean for av
    
Failed to build av
    
Installing collected packages: av
    
    Running setup.py install for av ... error
    
    ERROR: Command errored out with exit status 1:
    
     command: 'c:\users\manop\appdata\local\programs\python\python37\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\manop\\AppData\\Local\\Temp\\pip-install-rydo0uqj\\av\\setup.py'"'"'; __file__='"'"'C:\\Users\\manop\\AppData\\Local\\Temp\\pip-install-rydo0uqj\\av\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\manop\AppData\Local\Temp\pip-record-xac0xiy4\install-record.txt' --single-version-externally-managed --compile --install-headers 'c:\users\manop\appdata\local\programs\python\python37\Include\av'
    
         cwd: C:\Users\manop\AppData\Local\Temp\pip-install-rydo0uqj\av\
    
    Complete output (38 lines):
    
    running install
    
    running build
    
    running build_py
    
    creating build
    
    creating build\lib.win-amd64-3.7
    
    creating build\lib.win-amd64-3.7\av
    
    copying av\datasets.py -> build\lib.win-amd64-3.7\av
    
    copying av\deprecation.py -> build\lib.win-amd64-3.7\av
    
    copying av\__init__.py -> build\lib.win-amd64-3.7\av
    
    copying av\__main__.py -> build\lib.win-amd64-3.7\av
    
    creating build\lib.win-amd64-3.7\av\audio
    
    copying av\audio\__init__.py -> build\lib.win-amd64-3.7\av\audio
    
    creating build\lib.win-amd64-3.7\av\codec
    
    copying av\codec\__init__.py -> build\lib.win-amd64-3.7\av\codec
    
    creating build\lib.win-amd64-3.7\av\container
    
    copying av\container\__init__.py -> build\lib.win-amd64-3.7\av\container
    
    creating build\lib.win-amd64-3.7\av\data
    
    copying av\data\__init__.py -> build\lib.win-amd64-3.7\av\data
    
    creating build\lib.win-amd64-3.7\av\filter
    
    copying av\filter\__init__.py -> build\lib.win-amd64-3.7\av\filter
    
    creating build\lib.win-amd64-3.7\av\sidedata
    
    copying av\sidedata\__init__.py -> build\lib.win-amd64-3.7\av\sidedata
    
    creating build\lib.win-amd64-3.7\av\subtitles
    
    copying av\subtitles\__init__.py -> build\lib.win-amd64-3.7\av\subtitles
    
    creating build\lib.win-amd64-3.7\av\video
    
    copying av\video\__init__.py -> build\lib.win-amd64-3.7\av\video
    
    running build_ext
    
    running config
    
    writing build\temp.win-amd64-3.7\Release\include\pyav\config.h
    
    running cythonize
    
    building 'av.buffer' extension
    
    creating build\temp.win-amd64-3.7\Release\src
    
    creating build\temp.win-amd64-3.7\Release\src\av
    
    C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.16.27023\bin\HostX64\x64\cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MD -Ibuild\temp.win-amd64-3.7\Release\include -Iinclude -Ic:\users\manop\appdata\local\programs\python\python37\include -Ic:\users\manop\appdata\local\programs\python\python37\include -Ic:\users\manop\appdata\local\programs\python\python37\include -Ibuild\temp.win-amd64-3.7\Release\include "-IC:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.16.27023\Include" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\ucrt" /Tcsrc\av\buffer.c /Fobuild\temp.win-amd64-3.7\Release\src\av\buffer.obj
    
    buffer.c
    
    C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.16.27023\bin\HostX64\x64\link.exe /nologo /INCREMENTAL:NO /LTCG /DLL /MANIFEST:EMBED,ID=2 /MANIFESTUAC:NO /LIBPATH:c:\users\manop\appdata\local\programs\python\python37\PCbuild\amd64 /LIBPATH:c:\users\manop\appdata\local\programs\python\python37\libs /LIBPATH:c:\users\manop\appdata\local\programs\python\python37\libs /LIBPATH:c:\users\manop\appdata\local\programs\python\python37\PCbuild\amd64 "/LIBPATH:C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.16.27023\Lib\x64" "/LIBPATH:C:\Program Files (x86)\Windows Kits\10\lib\10.0.18362.0\um\x64" /LIBPATH:C:\WINDOWS\Microsoft.NET\Framework64\v4.0.30319 "/LIBPATH:C:\Program Files (x86)\Windows Kits\10\lib\10.0.18362.0\ucrt\x64" avutil.lib avfilter.lib swresample.lib swscale.lib avformat.lib avcodec.lib avdevice.lib /EXPORT:PyInit_buffer build\temp.win-amd64-3.7\Release\src\av\buffer.obj /OUT:build\lib.win-amd64-3.7\av\buffer.cp37-win_amd64.pyd /IMPLIB:build\temp.win-amd64-3.7\Release\src\av\buffer.cp37-win_amd64.lib /OPT:NOREF
    
    LINK : fatal error LNK1181: cannot open input file 'avutil.lib'
    
    error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Community\\VC\\Tools\\MSVC\\14.16.27023\\bin\\HostX64\\x64\\link.exe' failed with exit status 1181
    
    ----------------------------------------
    
ERROR: Command errored out with exit status 1: 'c:\users\manop\appdata\local\programs\python\python37\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\manop\\AppData\\Local\\Temp\\pip-install-rydo0uqj\\av\\setup.py'"'"'; __file__='"'"'C:\\Users\\manop\\AppData\\Local\\Temp\\pip-install-rydo0uqj\\av\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\manop\AppData\Local\Temp\pip-record-xac0xiy4\install-record.txt' --single-version-externally-managed --compile --install-headers 'c:\users\manop\appdata\local\programs\python\python37\Include\av' Check the logs for full command output.

    These are my visual C++ selections :
    my visual studio installer individual components selection

  • FFMPEG - How to pipe RMS_level and pts_time metadata without generating unwanted metadata

    6 février 2020, par Tovi Newman

    I am trying to find the loudest (highest rms_level) moment in an audio file, but I need to pipe the metadata rather than write to a file.

    I converted the answer found here : [https://superuser.com/questions/1183663/determining-audio-level-peaks-with-ffmpeg][1]

    By removing the write to file command and adding a pipe.
    Here’s what I’ve got.

    ffmpeg -i loudSoft.mp3 -af astats=metadata=1:reset=1,ametadata=print:key=lavfi.astats.Overall.RMS_level -f null - 2> result.txt

    The only problem is, now I’ve got a lot of unwanted metadata before and after the RMS_level and pts_time data as well as [Parsed_ametadata_1 @ 0x7f9d42c37500] being printed on each line. None of that was being written when I was writing to a file instead of piping. (all I need is the time and the rms.)

    Here is an abridged version of what I get when I write to file :

    frame:0    pts:0       pts_time:0
    
lavfi.astats.Overall.RMS_level=-inf
    
frame:1    pts:47      pts_time:0.00106576
    
lavfi.astats.Overall.RMS_level=-165.163347
    
frame:2    pts:1199    pts_time:0.0271882
    
lavfi.astats.Overall.RMS_level=-99.736394
    
frame:3    pts:2351    pts_time:0.0533107
    
lavfi.astats.Overall.RMS_level=-88.112282
    
frame:4    pts:3503    pts_time:0.0794331
    
lavfi.astats.Overall.RMS_level=-86.554314
    
frame:5    pts:4655    pts_time:0.105556
    
lavfi.astats.Overall.RMS_level=-82.977501
    
frame:6    pts:5807    pts_time:0.131678
    
lavfi.astats.Overall.RMS_level=-79.698739
    
frame:7    pts:6959    pts_time:0.1578
    
lavfi.astats.Overall.RMS_level=-76.629393
    
frame:8    pts:8111    pts_time:0.183923
    
lavfi.astats.Overall.RMS_level=-71.581211
    
frame:9    pts:9263    pts_time:0.210045
    
lavfi.astats.Overall.RMS_level=-75.038503
    
frame:10   pts:10415   pts_time:0.236168

    And here is what I’m looking at :

    ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
    
  built with Apple clang version 11.0.0 (clang-1100.0.33.16)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.2.2_1 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags='-I/Library/Java/JavaVirtualMachines/adoptopenjdk-13.0.1.jdk/Contents/Home/include -I/Library/Java/JavaVirtualMachines/adoptopenjdk-13.0.1.jdk/Contents/Home/include/darwin -fno-stack-check' --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libsoxr --enable-videotoolbox --disable-libjack --disable-indev=jack
    
  libavutil      56. 31.100 / 56. 31.100
    
  libavcodec     58. 54.100 / 58. 54.100
    
  libavformat    58. 29.100 / 58. 29.100
    
  libavdevice    58.  8.100 / 58.  8.100
    
  libavfilter     7. 57.100 /  7. 57.100
    
  libavresample   4.  0.  0 /  4.  0.  0
    
  libswscale      5.  5.100 /  5.  5.100
    
  libswresample   3.  5.100 /  3.  5.100
    
  libpostproc    55.  5.100 / 55.  5.100
    
Input #0, mp3, from 'loudSoft2.mp3':
    
  Metadata:
    
    encoder         : Lavf58.29.100
    
  Duration: 00:00:09.85, start: 0.025057, bitrate: 128 kb/s
    
    Stream #0:0: Audio: mp3, 44100 Hz, stereo, fltp, 128 kb/s
    
    Metadata:
    
      encoder         : Lavc58.54
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (mp3 (mp3float) -> pcm_s16le (native))
    
Press [q] to stop, [?] for help
    
[Parsed_ametadata_1 @ 0x7f9d42c37500] frame:0    pts:0       pts_time:0
    
[Parsed_ametadata_1 @ 0x7f9d42c37500] lavfi.astats.Overall.RMS_level=-inf
    
Output #0, null, to 'pipe:':
    
  Metadata:
    
    encoder         : Lavf58.29.100
    
    Stream #0:0: Audio: pcm_s16le, 44100 Hz, stereo, s16, 1411 kb/s
    
    Metadata:
    
      encoder         : Lavc58.54.100 pcm_s16le
    
[Parsed_ametadata_1 @ 0x7f9d42c37500] frame:1    pts:47      pts_time:0.00106576
    
[Parsed_ametadata_1 @ 0x7f9d42c37500] lavfi.astats.Overall.RMS_level=-165.163347
    
[Parsed_ametadata_1 @ 0x7f9d42c37500] frame:2    pts:1199    pts_time:0.0271882
    
[Parsed_ametadata_1 @ 0x7f9d42c37500] lavfi.astats.Overall.RMS_level=-99.736394
    
[Parsed_ametadata_1 @ 0x7f9d42c37500] frame:3    pts:2351    pts_time:0.0533107
    

    

    
*** MIDDLE OMITTED FOR BREVITY ***
    

    

    
[Parsed_ametadata_1 @ 0x7f9d42c37500] lavfi.astats.Overall.RMS_level=-88.532185
    
[Parsed_ametadata_1 @ 0x7f9d42c37500] frame:375  pts:430895  pts_time:9.77086
    
[Parsed_ametadata_1 @ 0x7f9d42c37500] lavfi.astats.Overall.RMS_level=-88.594276
    
[Parsed_ametadata_1 @ 0x7f9d42c37500] frame:376  pts:432047  pts_time:9.79698
    
[Parsed_ametadata_1 @ 0x7f9d42c37500] lavfi.astats.Overall.RMS_level=-88.654138
    
size=N/A time=00:00:09.82 bitrate=N/A speed=82.6x    
    
video:0kB audio:1692kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
    
[Parsed_astats_0 @ 0x7f9d42c37280] Channel: 1
    
[Parsed_astats_0 @ 0x7f9d42c37280] DC offset: 0.000001
    
[Parsed_astats_0 @ 0x7f9d42c37280] Min level: -0.000106
    
[Parsed_astats_0 @ 0x7f9d42c37280] Max level: 0.000115
    
[Parsed_astats_0 @ 0x7f9d42c37280] Min difference: 0.000000
    
[Parsed_astats_0 @ 0x7f9d42c37280] Max difference: 0.000077
    
[Parsed_astats_0 @ 0x7f9d42c37280] Mean difference: 0.000017
    
[Parsed_astats_0 @ 0x7f9d42c37280] RMS difference: 0.000022
    
[Parsed_astats_0 @ 0x7f9d42c37280] Peak level dB: -78.752617
    
[Parsed_astats_0 @ 0x7f9d42c37280] RMS level dB: -88.654138
    
[Parsed_astats_0 @ 0x7f9d42c37280] RMS peak dB: -88.654138
    
[Parsed_astats_0 @ 0x7f9d42c37280] RMS trough dB: -88.654138
    
[Parsed_astats_0 @ 0x7f9d42c37280] Crest factor: 3.126627
    
[Parsed_astats_0 @ 0x7f9d42c37280] Flat factor: 0.000000
    
[Parsed_astats_0 @ 0x7f9d42c37280] Peak count: 2
    
[Parsed_astats_0 @ 0x7f9d42c37280] Bit depth: 32/32
    
[Parsed_astats_0 @ 0x7f9d42c37280] Dynamic range: 76.274252
    
[Parsed_astats_0 @ 0x7f9d42c37280] Zero crossings: 246
    
[Parsed_astats_0 @ 0x7f9d42c37280] Zero crossings rate: 0.222624
    
[Parsed_astats_0 @ 0x7f9d42c37280] Number of NaNs: 0
    
[Parsed_astats_0 @ 0x7f9d42c37280] Number of Infs: 0
    
[Parsed_astats_0 @ 0x7f9d42c37280] Number of denormals: 0
    
[Parsed_astats_0 @ 0x7f9d42c37280] Channel: 2
    
[Parsed_astats_0 @ 0x7f9d42c37280] DC offset: 0.000001
    
[Parsed_astats_0 @ 0x7f9d42c37280] Min level: -0.000106
    
[Parsed_astats_0 @ 0x7f9d42c37280] Max level: 0.000115
    
[Parsed_astats_0 @ 0x7f9d42c37280] Min difference: 0.000000
    
[Parsed_astats_0 @ 0x7f9d42c37280] Max difference: 0.000077
    
[Parsed_astats_0 @ 0x7f9d42c37280] Mean difference: 0.000017
    
[Parsed_astats_0 @ 0x7f9d42c37280] RMS difference: 0.000022
    
[Parsed_astats_0 @ 0x7f9d42c37280] Peak level dB: -78.752617
    
[Parsed_astats_0 @ 0x7f9d42c37280] RMS level dB: -88.654138
    
[Parsed_astats_0 @ 0x7f9d42c37280] RMS peak dB: -88.654138
    
[Parsed_astats_0 @ 0x7f9d42c37280] RMS trough dB: -88.654138
    
[Parsed_astats_0 @ 0x7f9d42c37280] Crest factor: 3.126627
    
[Parsed_astats_0 @ 0x7f9d42c37280] Flat factor: 0.000000
    
[Parsed_astats_0 @ 0x7f9d42c37280] Peak count: 2
    
[Parsed_astats_0 @ 0x7f9d42c37280] Bit depth: 32/32
    
[Parsed_astats_0 @ 0x7f9d42c37280] Dynamic range: 76.274252
    
[Parsed_astats_0 @ 0x7f9d42c37280] Zero crossings: 246
    
[Parsed_astats_0 @ 0x7f9d42c37280] Zero crossings rate: 0.222624
    
[Parsed_astats_0 @ 0x7f9d42c37280] Number of NaNs: 0
    
[Parsed_astats_0 @ 0x7f9d42c37280] Number of Infs: 0
    
[Parsed_astats_0 @ 0x7f9d42c37280] Number of denormals: 0
    
[Parsed_astats_0 @ 0x7f9d42c37280] Overall
    
[Parsed_astats_0 @ 0x7f9d42c37280] DC offset: 0.000001
    
[Parsed_astats_0 @ 0x7f9d42c37280] Min level: -0.000106
    
[Parsed_astats_0 @ 0x7f9d42c37280] Max level: 0.000115
    
[Parsed_astats_0 @ 0x7f9d42c37280] Min difference: 0.000000
    
[Parsed_astats_0 @ 0x7f9d42c37280] Max difference: 0.000077
    
[Parsed_astats_0 @ 0x7f9d42c37280] Mean difference: 0.000017
    
[Parsed_astats_0 @ 0x7f9d42c37280] RMS difference: 0.000022
    
[Parsed_astats_0 @ 0x7f9d42c37280] Peak level dB: -78.752617
    
[Parsed_astats_0 @ 0x7f9d42c37280] RMS level dB: -88.654138
    
[Parsed_astats_0 @ 0x7f9d42c37280] RMS peak dB: -88.654138
    
[Parsed_astats_0 @ 0x7f9d42c37280] RMS trough dB: -88.654138
    
[Parsed_astats_0 @ 0x7f9d42c37280] Flat factor: 0.000000
    
[Parsed_astats_0 @ 0x7f9d42c37280] Peak count: 2.000000
    
[Parsed_astats_0 @ 0x7f9d42c37280] Bit depth: 32/32
    
[Parsed_astats_0 @ 0x7f9d42c37280] Number of samples: 1105
    
[Parsed_astats_0 @ 0x7f9d42c37280] Number of NaNs: 0.000000
    
[Parsed_astats_0 @ 0x7f9d42c37280] Number of Infs: 0.000000
    
[Parsed_astats_0 @ 0x7f9d42c37280] Number of denormals: 0.000000

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