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• FFmpeg : Windows vs Linux issues

  16 octobre 2022, par Chris

  I have run into an issue that I am pretty sure I have narrowed down to FFmpeg.

  


  I have a Flask app that restreams live streams using FFmpeg.

  


  ...

@app.route("/play/", methods=["GET"])
def play():
    def streamData():
        try:
            with subprocess.Popen(
                ffmpegcmd,
                stdin=subprocess.DEVNULL,
                stdout=subprocess.PIPE,
                stderr=subprocess.PIPE,
            ) as ffmpeg_sb:
                while True:
                    chunk = ffmpeg_sb.stdout.read(1024)
                    if len(chunk) == 0:
                        break
                    yield chunk
        except:
            pass
        finally:
            ffmpeg_sb.kill()

    return Response(streamData())

...



  


  I am using the following command.

  


  ffmpeg -loglevel panic -hide_banner -i <url> -vcodec copy -acodec copy -f mpegts pipe:</url>

  


  When I run my Flask app on Windows, both VLC and TVHeadend play the piped output perfectly.
However under Linux only VLC will play the piped output. I can get TVHeadend to play the stream from Linux, but it requires me to enable the AV Library option in TVHeadend, which I want to avoid. I have tested this using WSL (Ubuntu) and Docker (alpine + Ubuntu) on my Ubuntu server where the app will live.

  


  I can only assume its because FFmpeg behaves differently between Windows and Linux ? I have tried several different version of FFmpeg... So I don't think its a version issue.

  


  The version of FFmpeg I am currently using on Windows is this one https://www.gyan.dev/ffmpeg/builds/ but I experienced the same success on older versions, so again, I don't think its a version number issue.

  


  Can anyone suggest how I can go about finding out what the cause is ?
Is it possible that some default values differ between Windows and Linux ?

  


  Any advice is appreciated !

  


• System reboots during ffmpeg tool installation

  11 novembre 2016, par JeeBoomBaa

  I have enabled QSV with reference of the streambuilder’s enabling-iqsv docs.

  MACHINE DETAILS

  Server : Intel(R) Xeon(R) CPU E3-1285 v4 3.50GHz w/ Supermicro X10SLH-F

  Kernel : Linux 3.10.0-229.1.2.44985.MSSr7.el7.centos.x86_64 #1 SMP Wed Nov 9 16:26:25 PST 2016 x86_64 x86_64 x86_64 GNU/Linux

  I have installed ffmpeg with —enable-nonfree —enable-libmfx configurations, configuration command was successfully done.Then, I invoke make and our server gets hanged in few seconds and it will gets rebooted automatically.

  I feel it might be compilation issue with make script.

  ./configure --prefix="/usr/ffmpeg" --extra-cflags="-I$HOME/ffmpeg_build/include" --extra-ldflags="-L$HOME/ffmpeg_build/lib" --bindir="$HOME/bin" --pkg-config-flags="--static" --enable-nonfree --enable-libmfx
  
  make 
  
  --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2068, si_status=0, si_utime=0, si_stime=0} ---
  
  rt_sigreturn()                          = 2068
  
  rt_sigprocmask(SIG_BLOCK, [HUP INT QUIT TERM XCPU XFSZ], NULL, 8) = 0
  
  rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
  
  stat("libavcodec/intrax8dsp.o", {st_mode=S_IFREG|0644, st_size=82840, ...}) = 0
  
  stat("libavcodec/ituh263dec.o", 0x7ffff86affb0) = -1 ENOENT (No such file or directory)
  
  stat("libavcodec/ituh263dec.c", {st_mode=S_IFREG|0644, st_size=38617, ...}) = 0
  
  rt_sigprocmask(SIG_BLOCK, [HUP INT QUIT TERM XCPU XFSZ], NULL, 8) = 0
  
  vfork()                                 = 2072
  
  rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
  
  wait4(-1, CC libavcodec/ituh263dec.o

  I have attached config.log and FFMPEG-MAKE-TRACE.log file.

• How do I fix a 401 Unauthorized error when executing the ffmpeg command on a CentOS 7 system with RTSP input ? [closed]

  24 mai 2023, par user21950974

  Execute the command :
ffmpeg -re -rtsp_transport tcp -i "rtsp://username:password@ip:port/h264/ch1/main/" -f flv -vcodec h264 -vprofile baseline -acodec aac -ar 44100 -strict -2 -ac 1 -f flv -q 10 "rtmp://localhost:10001/live/mystream"

  


  Error code :
[rtsp @ 0xf4f540] method DESCRIBE failed: 401 Unauthorized rtsp://username:password@ip:port/h264/ch1/main: Server returned 401 Unauthorized (authorization failed)

  


  ffmpeg version 5.1.3

  


  This question has been bothering me for two days.
I used VLC on Windows to type in the same RTSP address and it was able to play