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• Artifact while streaming multicast with ffmpeg

  17 août 2018, par Nicosmik

  Locally, from my windows machine with ffmpeg 3.3.2 from Zeranoe

  ffmpeg version 3.2.2 Copyright (c) 2003-2016 the FFmpeg developers
  built with gcc 5.4.0 (GCC)
  configuration : —enable-gpl
  —enable-version3 —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-decklink —enable-zlib

  Server side

  Launch udp multicast streaming.

   ffmpeg -re -i video.ts -an -f mpegts -c copy udp://224.1.1.1:5000

  Client side

  Playing with ffplay is correct, no artifacts displayed

  ffplay udp://224.1.1.1:5000

  Playing after decoding cause artifacts

  ffmpeg -i udp://224.1.1.1:5000 -pix_fmt gray -f avi - | ffplay -

  or

  ffmpeg -f mpegts -i udp://224.1.1.1:5000 -pix_fmt gray -c:v rawvideo -f avi out.avi

  Does someone has an explanation ?

• FFmpeg TLS : Protocol not found

  30 août 2016, par bot3663369

  I am trying to stream a video securely, and this is what I have tried :

  Console 1

  $ ffmpeg -i out.webm -f format tls://127.0.0.1:8554?listen&cert=test.crt&key=test.key
  
  [1] 46061
  
  [2] 46062    
  
  $ ffmpeg version N-81392-ga453bbb Copyright (c) 2000-2016 the FFmpeg developers
  
    built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.2) 20160609
  
    configuration: --pkg-config-flags=--static --enable-shared --enable-pic --enable-libvpx --prefix=/home/ytan/Dev/build-x64
  
    libavutil      55. 29.100 / 55. 29.100
  
    libavcodec     57. 54.100 / 57. 54.100
  
    libavformat    57. 47.101 / 57. 47.101
  
    libavdevice    57.  0.102 / 57.  0.102
  
    libavfilter     6. 52.100 /  6. 52.100
  
    libswscale      4.  1.100 /  4.  1.100
  
    libswresample   2.  1.100 /  2.  1.100
  
  
  
  (...waiting indefinitely)

  Console 2

  $ ffplay tls://127.0.0.1:8554
  
  ffplay version N-81392-ga453bbb Copyright (c) 2003-2016 the FFmpeg developers
  
    built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.2) 20160609
  
    configuration: 
  
    libavutil      55. 29.100 / 55. 29.100
  
    libavcodec     57. 54.100 / 57. 54.100
  
    libavformat    57. 47.101 / 57. 47.101
  
    libavdevice    57.  0.102 / 57.  0.102
  
    libavfilter     6. 52.100 /  6. 52.100
  
    libswscale      4.  1.100 /  4.  1.100
  
    libswresample   2.  1.100 /  2.  1.100
  
  tls://127.0.0.1:8554: Protocol not foundq=    0KB sq=    0B f=0/0   
  
  $ 

  I have generated my key and certificate using OpenSSL :

  $ openssl req -newkey rsa:2048 -nodes -keyout domain.key -x509 -days 365 -out domain.crt
  
  $ sudo cp test.crt /usr/local/share/ca-certificates/
  
  $ sudo update-ca-certificates 

  Can someone drop me a hint or a pointer ?

• Not able to generate mp4 using png and mp3 audio

  18 juin 2019, par Bhaskar Dabhi

  I am totally nob to FFMPEG.
  I am trying to generate mp4 video file by merging mp3 and png image.

  When i try converting png image into mp4 it works

  ffmpeg -r 1/5.544000 -i 1.png -qscale 2 1.mp4

  But when i add mp3 audio file then it fails

  ffmpeg -r 1/5.544000 -i 1.png -i 1.mp3 -qscale 2 1.mp4

  Following is the error that i get :

  No pixel format specified, yuv444p for H.264 encoding chosen.
  
  Use -pix_fmt yuv420p for compatibility with outdated media players.
  
  
  
  [libx264 @ 0x1475be0] using SAR=1/1
  
  
  
  [libx264 @ 0x1475be0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
  
  
  
  `[libx264 @ 0x1475be0] profile High 4:4:4 Predictive, level 3.1, 4:4:4 8-`bit
  
  
  
  [libx264 @ 0x1475be0] 264 - core 142 r2431 a5831aa - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - 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=4 threads=3 lookahead_threads=1 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
  
  
  
  [aac @ 0x1476660] The encoder 'aac' is experimental but experimental codecs are not enabled, add '-strict -2' if you want to use it.

  I tried using -strict -2 but still it fails.

  What wrong in the command ? How to create mp4 using mp3 and png ?