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• Embed graphics/information to a streaming

  3 mars 2016, par Jorge Anzola

  How can I embed information or graphics to a stream.
  Like the "marquee" (IDK what’s its name) in a football/soccer game or any other live event. (Score, time and logo)

  

  I’ve to add a watermark with FFMPEG’s filter like

  ffmpeg -i sample.mp4 -i info.png -filter_complex overlay -c:v copy -c:a copy -f flv rtmp://wowzaServerAdress

  And I was thinking to change info.png with updated info. I had no idea if that could work, it was just a test. Anyhow, it gave this error :

  Streamcopy requested for output stream 0:0, which is fed from a complex filtergraph. Filtering and streamcopy cannot be used together.

  So, basically that error killed my only idea. Do you know how can achieve this with FFMPEG or similar ? I’d prefer not to use something like Xsplit.

• Creating screenshot/image from Twitch stream

  22 juillet 2015, par danL

  I’ve messed around with FFmpeg some time ago and remember using it to fetch preview images for video files. My question is, is this the correct path to be going down for the purpose of getting images from a Twitch live stream ? What I need to do is get a screenshot of the end of a Twitch stream (the final scoreboard in a video game) and save that screen shot.

  I’m pretty sure I could get the code written, but I want to make sure there isn’t a better way of accomplishing this task because it seems like it would have gotten easier over the years. If there are any other libraries/APIs that would be more efficient than executing FFMpeg all the time.

  I hope there’s been some improvement in PHP video handling, but I’ve searched around and can’t find anything.

• How can i use ffmpeg to capture video from a usb device ? [on hold]

  27 juin 2015, par Brubaker Haim

  Just for the test i did :
  I went to Device Manager > Sound, video and game controllers and there isee the device Game Capture HD this device is connected to my pc usb.

  Then i typed in the cmd window :

  e:\ffmpeg -f dshow -i video="Game Capture HD" out.mp4

  But what i get is this error :

  ffmpeg version N-73165-gf1e1730 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with gcc 4.9.2 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable
  
  isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --e
  
  le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca
  
  enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enabl
  
  ibilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --e
  
  le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp -
  
  able-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --
  
  ble-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwb
  
   --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --en
  
  e-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --
  
  ble-decklink --enable-zlib
  
    libavutil      54. 27.100 / 54. 27.100
  
    libavcodec     56. 45.100 / 56. 45.100
  
    libavformat    56. 38.102 / 56. 38.102
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 18.100 /  5. 18.100
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  2.100 /  1.  2.100
  
    libpostproc    53.  3.100 / 53.  3.100
  
  [dshow @ 00000000046e6280] Could not enumerate video devices (or none found).
  
  video=GameCapture: Input/output error