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    Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela.

Sur d’autres sites (5230)

  • vlc python stream from other NAT

    7 octobre 2020, par xKedar

    I'm trying to stream, using FFmpeg, my webcam and audio from PC1 to PC2 in another LAN.

    


    PC1 : Public IP address with port forwarding so I can reach it

    


    PC2 : In a different NAT from PC1

    


    I basically run a server on PC1 in order to acquire IP and port from PC2 and reply on the same address

    


        import socket

    localPort   = 1234
    bufferSize  = 1024

    UDPServerSocket = socket.socket(family=socket.AF_INET, type=socket.SOCK_DGRAM)
    UDPServerSocket.bind(("", localPort)) # Bind to address and port

    while(True):
        bytesAddressPair = UDPServerSocket.recvfrom(bufferSize)
        message = bytesAddressPair[0].decode("utf-8")
        address = bytesAddressPair[1]
        # Sending a reply to client
        UDPServerSocket.sendto(str.encode("Hello"), address)
        break

    UDPServerSocket.close()


    


    Then I try to send the stream with the same port number both for the server(localPort) and the client(the one I acquired from address)

    


        import re
    from threading import Thread
    from subprocess import Popen, PIPE

    def detect_devices():
            list_cmd = 'ffmpeg -list_devices true -f dshow -i dummy'.split()
            p = Popen(list_cmd, stderr=PIPE)
            flagcam = flagmic = False
            for line in iter(p.stderr.readline,''):
                if flagcam:
                    cam = re.search('".*"',line.decode(encoding='UTF-8')).group(0)
                    cam = cam if cam else ''
                    flagcam = False
                if flagmic:
                    mic = re.search('".*"',line.decode(encoding='UTF-8')).group(0)
                    mic = mic if mic else ''
                    flagmic = False
                elif 'DirectShow video devices'.encode(encoding='UTF-8') in line:
                    flagcam = True
                elif 'DirectShow audio devices'.encode(encoding='UTF-8') in line:
                    flagmic = True
                elif 'Immediate exit requested'.encode(encoding='UTF-8') in line:
                    break
            return cam, mic   


    class ffmpegThread (Thread):
        def __init__(self, address):
            Thread.__init__(self)
            self.address = address

        def run(self):
            cam, mic = detect_devices()
            command = 'ffmpeg -f dshow -i video='+cam+':audio='+mic+' -profile:v high -pix_fmt yuvj420p -level:v 4.1 -preset ultrafast -tune zerolatency -vcodec libx264 -r 10 -b:v 512k -s 240x160 -acodec aac -ac 2 -ab 32k -ar 44100 -f mpegts -flush_packets 0 -t 40 udp://'+self.address+'?pkt_size=1316?localport='+str(localPort)
            p = Popen(command , stderr=PIPE)
            for line in iter(p.stderr.readline,''):
                if len(line) <5: break
            p.terminate()

    thread1 = ffmpegThread(address[0]+":"+str(address[1]))
    thread1.start()


    


    While on the other side(PC2) I have :

    


        from threading import Thread
    import tkinter as tk
    import vlc

    class myframe(tk.Frame):
        def __init__(self, width=240, height=160):
            self.root = tk.Tk()
            super(myframe, self).__init__(self.root)
            self.root.geometry("%dx%d" % (width, height))
            self.root.wm_attributes("-topmost", 1)
            self.grid()
            self.frame = tk.Frame(self, width=240, height=160)
            self.frame.configure(bg="black")
            self.frame.grid(row=0, column=0, columnspan=2)
            self.play()
            self.root.mainloop()

        def play(self):
            self.player = vlc.Instance().media_player_new()
            self.player.set_mrl('udp://@0.0.0.0:5000')
            self.player.set_hwnd(self.frame.winfo_id())
            self.player.play()

    class guiThread (Thread):
        def __init__(self, nome):
            Thread.__init__(self)
            self.nome = nome

        def run(self):
            app = myframe()


    


    and :

    


        import socket

    msgFromClient       = "Hello UDP Server"
    bytesToSend         = str.encode(msgFromClient)
    serverAddressPort   = ("MYglobal_IPaddress", 1234)
    bufferSize          = 1024
    localPort   = 5000

    # Create a UDP socket at client side
    UDPClientSocket = socket.socket(family=socket.AF_INET, type=socket.SOCK_DGRAM) 
    UDPClientSocket.bind(("", localPort))

    UDPClientSocket.sendto(bytesToSend, serverAddressPort)

    msgFromServer = UDPClientSocket.recvfrom(bufferSize)
    msg = msgFromServer[0].decode("utf-8")
    print(msg)
    UDPClientSocket.close()
    gui = guiThread("ThreadGUI")
    gui.start()


    


    Where I basically try to reach the server both to send my IP:Port and to punch a hole in the NAT in order to be able to get the packages sent from PC1 despite being behind a NAT.

    


    I guess this is not working because I can not get the stream to work but I really can not figure out how to fix that

    


  • FFmpeg capture RTSP MPEG4 and rebroadcast MPEG2 RTP multicast

    18 octobre 2017, par Omid Khalili

    I’m trying to capture MPEG4 RTSP stream from my IP camera from address :

    rtsp ://192.168.1.183/axis-media/media.amp

    And rebroadcast it with MPEG2 format over RTP and multicast address :

    239.101.101.101

    and port :

    6000

    Here is the command that I’m using in Linux Ubuntu :

    ffmpeg -re -i "rtsp://root:pass@192.168.1.183/axis-media/media.amp" -vcodec copy -acodec copy -f mpegts "rtp://239.101.101.101:6000"

    The "rtsp ://192.168.1.183/axis-media/media.amp" is working on VLC player with no issue but I can’t open "rtp ://239.101.101.101:6000" on it.

    Ubuntu 17.04 UFW firewall is also OFF.

    May I know if I’m using a correct command in FFmpeg ?

    Thanks

  • ffmpeg command failed

    25 octobre 2015, par Asad kamran

    I am experimenting FFMPEG command to convert any video format to mp4.

    Server admin execute the below command created by me and show me the errors :

    ffmpeg -ss 00:03:00  -i  /video/1444107854.mov -c:v libx264 /video/player/1444107854.mp4  -vframes 1 /video/thumb/1444107854.jpg

    This is error :

    [aac @ 0x2b845a0] The encoder ’aac’ is experimental but experimental
    codecs are not enabled, add ’-strict -2’ if you want to use it.

    how can i avoid this error and also experimental codec, so can any one let me know what can be best codec if i explicitly specify it.

    my ffmpeg and server are as follow :

    ffmpeg version N-75903-g14573b9 Copyright (c) 2000-2015 the FFmpeg
    developers built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-16)

    EDIT 1 :
    I change the command a bit and add -c:a copy to copy audio stream as it is but still no hope :

    New command :

    ffmpeg -ss 00:03:00  -i  /video/1444107854.mov -c:v libx264 -c:a copy /video/player/1444107854.mp4  -vframes 1 /video/thumb/1444107854.jpg

    After executing this i got a file of 23k size, apparently as in log it only copy audio stream and no video is added in final output.
    Its Log is as follow :

    > ffmpeg version N-75903-g14573b9 Copyright (c) 2000-2015 the FFmpeg
    
> developers   built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-16)  
    
> configuration: --enable-libx264 --enable-gpl   libavutil      55. 
    
> 3.100 / 55.  3.100   libavcodec     57.  5.100 / 57.  5.100   libavformat    57.  3.100 / 57.  3.100   libavdevice    57.  0.100 /
    
> 57.  0.100   libavfilter     6. 10.100 /  6. 10.100   libswscale      4.  0.100 /  4.  0.100   libswresample   2.  0.100 /  2.  0.100   libpostproc    54.  0.100 / 54.  0.100 Input #0, mpeg, from
    
> '/video/1444108714.mpg':  
    
> Duration: 00:00:02.14, start: 0.184278, bitrate: 15689 kb/s
    
>     Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], max. 38810 kb/s, 29.97 fps, 29.97 tbr,
    
> 90k tbn, 59.94 tbc
    
>     Stream #0:1[0x80]: Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s [swscaler @ 0x347fda0] deprecated pixel format used, make sure you did
    
> set range correctly [libx264 @ 0x34708a0] using SAR=1/1 [libx264 @
    
> 0x34708a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 [libx264
    
> @ 0x34708a0] profile High, level 4.0 [libx264 @ 0x34708a0] 264 - core
    
> 148 r2597 e86f3a1 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 -
    
> 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=34
    
> lookahead_threads=5 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 [mp4 @ 0x346f6c0] Codec for stream 1 does not use global
    
> headers but container format requires global headers [mp4 @ 0x346f6c0]
    
> track 1: codec frame size is not set Output #0, mp4, to
    
> '/video/player/1444108714.mp4':  
    
> Metadata:
    
>     encoder         : Lavf57.3.100
    
>     Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 29.97 fps, 30k tbn,
    
> 29.97 tbc
    
>     Metadata:
    
>       encoder         : Lavc57.5.100 libx264
    
>     Stream #0:1: Audio: ac3 ([165][0][0][0] / 0x00A5), 48000 Hz, 5.1(side), 448 kb/s Output #1, image2, to '/video/thumb/1444108714.jpg':  
    
> Metadata:
    
>     encoder         : Lavf57.3.100
    
>     Stream #1:0: Video: mjpeg, yuvj420p(pc), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc
    
>     Metadata:
    
>       encoder         : Lavc57.5.100 mjpeg Stream mapping:   Stream #0:0 -> #0:0 (mpeg2video (native) -> h264 (libx264))   Stream #0:1 -> #0:1 (copy)   Stream #0:0 -> #1:0 (mpeg2video (native) -> mjpeg (native)) Press [q] to stop, [?] for help [mp4 @ 0x346f6c0]
    
> Non-monotonous DTS in output stream 0:1; previous: 2208, current: 672;
    
> changing to 2209. This may result in incorrect timestamps in the
    
> output file. frame=    0 fps=0.0 q=0.0 Lq=0.0 size=      23kB
    
> time=00:00:00.07 bitrate=2447.5kbits/s video:0kB audio:23kB
    
> subtitle:0kB other streams:0kB global headers:0kB muxing overhead:
    
> 3.457839%

    EDIT 2 :

    ffmpeg -y -i ./1445675270.m4b -c:v libx264  -crf 20 -preset slow -pix_fmt yuv420p -movflags +faststart -c:a libfdk_aac -b:a 128k  ./player/1445675270.mp4 -vframes 1 ./thumb/1445675270.jpg

    Above command output the below message, i will appreciate if you can suggest.

    ffmpeg version git-2015-10-11-49f4967 Copyright (c) 2000-2015 the FFmpeg developers
    
  built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-16)
    
  configuration: --prefix=/root/ffmpeg_build --extra-cflags=-I/root/ffmpeg_build/include --extra-ldflags=-L/root/ffmpeg_build/lib --bindir=/root/bin --pkg-config-flags=--static --enable-gpl --enable-nonfree --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265
    
  libavutil      55.  3.100 / 55.  3.100
    
  libavcodec     57.  5.100 / 57.  5.100
    
  libavformat    57.  3.100 / 57.  3.100
    
  libavdevice    57.  0.100 / 57.  0.100
    
  libavfilter     6. 11.100 /  6. 11.100
    
  libswscale      4.  0.100 /  4.  0.100
    
  libswresample   2.  0.100 /  2.  0.100
    
  libpostproc    54.  0.100 / 54.  0.100
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x31e07c0] stream 0, timescale not set
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from './1445675270.m4b':
    
  Metadata:
    
    major_brand     : M4A 
    
    minor_version   : 0
    
    compatible_brands: M4A mp42isom
    
    creation_time   : 2005-08-01 07:26:16
    
    tool            : ?
    
    title           : MAKE_2005-08-01
    
    artist          : MAKE Magazine
    
    composer        : MAKE Magazine - Phillip Torrone
    
    album           : Interview with Janus Wireless
    
    grouping        : MAKE Magazine enhanced podcast
    
    genre           : Podcast
    
    date            : 2005
    
    comment         : Interview with Janus wireless and their 5 Wi-Fi card packet capturing Linux box. This is a special enhanced podcast (this file plays images and links in iTunes and on iPod color devices).
    
  Duration: 00:02:57.54, start: 0.000000, bitrate: 162 kb/s
    
    Chapter #0:0: start 0.000000, end 17.000000
    
    Metadata:
    
      title           : MAKE Magazine @ DEFCON with JANUS
    
    Chapter #0:1: start 17.000000, end 37.000000
    
    Metadata:
    
      title           : Janus
    
    Chapter #0:2: start 37.000000, end 83.000000
    
    Metadata:
    
      title           : Construction
    
    Chapter #0:3: start 83.000000, end 109.000000
    
    Metadata:
    
      title           : The MAKERs
    
    Chapter #0:4: start 109.000000, end 177.540000
    
    Metadata:
    
      title           : Display
    
    Stream #0:0(eng): Audio: aac (LC) (mp4a / 0x6134706D), 22050 Hz, mono, fltp, 32 kb/s (default)
    
    Metadata:
    
      creation_time   : 2005-08-01 07:26:16
    
      handler_name    : ?Apple Alias Data Handler
    
    Stream #0:1(eng): Subtitle: mov_text (text / 0x74786574), 0 kb/s
    
    Metadata:
    
      creation_time   : 2005-08-01 07:26:16
    
      handler_name    : ?Apple Alias Data Handler
    
    Stream #0:2(eng): Video: tiff (tiff / 0x66666974), rgb24, 167x166, 126 kb/s, SAR 206:275 DAR 17201:22825, 0.03 fps, 1 tbr, 22050 tbn, 22050 tbc (default)
    
    Metadata:
    
      creation_time   : 2005-08-01 07:26:16
    
      handler_name    : ?Apple Alias Data Handler
    
      encoder         : TIFF (Uncompressed)
    
    Stream #0:3(eng): Subtitle: mov_text (tx3g / 0x67337874), 160x160, 0 kb/s (default)
    
    Metadata:
    
      creation_time   : 2005-08-01 07:26:16
    
      handler_name    : ?Apple Alias Data Handler
    
    Stream #0:4: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 167x166 [SAR 1:1 DAR 167:166], 90k tbr, 90k tbn, 90k tbc
    
[swscaler @ 0x3242360] deprecated pixel format used, make sure you did set range correctly
    
[libx264 @ 0x3228c40] width not divisible by 2 (167x166)
    
Output #0, mp4, to './player/1445675270.mp4':
    
  Metadata:
    
    major_brand     : M4A 
    
    minor_version   : 0
    
    compatible_brands: M4A mp42isom
    
    comment         : Interview with Janus wireless and their 5 Wi-Fi card packet capturing Linux box. This is a special enhanced podcast (this file plays images and links in iTunes and on iPod color devices).
    
    tool            : ?
    
    title           : MAKE_2005-08-01
    
    artist          : MAKE Magazine
    
    composer        : MAKE Magazine - Phillip Torrone
    
    album           : Interview with Janus Wireless
    
    grouping        : MAKE Magazine enhanced podcast
    
    genre           : Podcast
    
    date            : 2005
    
    Chapter #0:0: start 0.000000, end 17.000000
    
    Metadata:
    
      title           : MAKE Magazine @ DEFCON with JANUS
    
    Chapter #0:1: start 17.000000, end 37.000000
    
    Metadata:
    
      title           : Janus
    
    Chapter #0:2: start 37.000000, end 83.000000
    
    Metadata:
    
      title           : Construction
    
    Chapter #0:3: start 83.000000, end 109.000000
    
    Metadata:
    
      title           : The MAKERs
    
    Chapter #0:4: start 109.000000, end 177.540000
    
    Metadata:
    
      title           : Display
    
    Stream #0:0(eng): Video: h264, none, q=2-31, 128 kb/s, SAR 206:275 DAR 0:0, 1 fps (default)
    
    Metadata:
    
      creation_time   : 2005-08-01 07:26:16
    
      handler_name    : ?Apple Alias Data Handler
    
      encoder         : Lavc57.5.100 libx264
    
    Stream #0:1(eng): Audio: aac, 0 channels, 128 kb/s (default)
    
    Metadata:
    
      creation_time   : 2005-08-01 07:26:16
    
      handler_name    : ?Apple Alias Data Handler
    
      encoder         : Lavc57.5.100 libfdk_aac
    
Output #1, image2, to './thumb/1445675270.jpg':
    
  Metadata:
    
    major_brand     : M4A 
    
    minor_version   : 0
    
    compatible_brands: M4A mp42isom
    
    comment         : Interview with Janus wireless and their 5 Wi-Fi card packet capturing Linux box. This is a special enhanced podcast (this file plays images and links in iTunes and on iPod color devices).
    
    tool            : ?
    
    title           : MAKE_2005-08-01
    
    artist          : MAKE Magazine
    
    composer        : MAKE Magazine - Phillip Torrone
    
    album           : Interview with Janus Wireless
    
    grouping        : MAKE Magazine enhanced podcast
    
    genre           : Podcast
    
    date            : 2005
    
    Chapter #1:0: start 0.000000, end 17.000000
    
    Metadata:
    
      title           : MAKE Magazine @ DEFCON with JANUS
    
    Chapter #1:1: start 17.000000, end 37.000000
    
    Metadata:
    
      title           : Janus
    
    Chapter #1:2: start 37.000000, end 83.000000
    
    Metadata:
    
      title           : Construction
    
    Chapter #1:3: start 83.000000, end 109.000000
    
    Metadata:
    
      title           : The MAKERs
    
    Chapter #1:4: start 109.000000, end 177.540000
    
    Metadata:
    
      title           : Display
    
    Stream #1:0(eng): Video: mjpeg, none, q=2-31, 128 kb/s, SAR 206:275 DAR 0:0, 1 fps (default)
    
    Metadata:
    
      creation_time   : 2005-08-01 07:26:16
    
      handler_name    : ?Apple Alias Data Handler
    
      encoder         : Lavc57.5.100 mjpeg
    
Stream mapping:
    
  Stream #0:2 -> #0:0 (tiff (native) -> h264 (libx264))
    
  Stream #0:0 -> #0:1 (aac (native) -> aac (libfdk_aac))
    
  Stream #0:2 -> #1:0 (tiff (native) -> mjpeg (native))
    
Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height

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