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• Unknown Codec error at ffserver

  23 mai 2016, par Potato

  I installed ffmpeg following this page, https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu

  As you see I enabled x264.
  But when I run ffserver, I get

  /etc/ffserver.conf:16: Unknown VideoCodec: libx264
  
  /etc/ffserver.conf:24: Unknown AudioCodec: libfaac

  My conf file is

  HTTPPort 8080
  
  RTSPPort 8090
  
  HTTPBindAddress 0.0.0.0
  
  RTSPBindAddress 0.0.0.0
  
  MaxClients 1000
  
  MaxBandwidth 1000000
  
  
  
  <feed>
  
  Launch ffmpeg -f v4l2 -i /dev/video0 -f alsa -ac 1 -i hw:1
  
  FileMaxSize 400K
  
  </feed>
  
  
  
  <stream>
  
  Format rtp
  
  Feed feed1.ffm
  
  VideoCodec libx264
  
  VideoFrameRate 24
  
  VideoBitRate 100
  
  VideoSize 320x240
  
  #AVPresetVideo default
  
  #AVPresetVideo baseline
  
  AVOptionVideo flags +global_header
  
  
  
  AudioCodec libfaac
  
  AudioBitRate 32
  
  AudioChannels 1
  
  AudioSampleRate 22050
  
  AVOptionAudio flags +global_header
  
  </stream>

  Well, what can I do more.

• Compile FFmpeg with openssl for macOS

  23 juin 2017, par H. Wilson

  Hi I would like to ask how to compile ffmpeg with openssl for macOS.

  When I type https in ffmpeg to download / encode webstream from the website I always get an error

  "https protocol not found, recompile FFmpeg with openssl, guntls. or securetransport enabled"

  whilst http does work (some websites didn’t allow http as I got an error "HTTP error 403 Forbidden though)

  https://trac.ffmpeg.org/wiki/CompilationGuide/MacOSX

  I have read the link above but I am unsure about the process as I don’t use homebrew to install ffmpeg but built myself.

  I am the very beginner using ffmpeg and any help would be appreciated..
  I hope somebody could show me its process to compile ffmpeg with openssl.

  For further advice, I am wondering if the function of ffmpeg I built myself is same as the static one here : ttps ://ffmpeg.zeranoe.com/builds/

  I built ffmpeg for mac by this website : http://ericholsinger.com/install-ffmpeg-on-a-mac

  Thanks in advance

• Using ffmpeg to encode web dash and audio drift

  1er octobre 2016, par John Joske

  I’m trying to use ffmpeg to create webm-dash encoded files from a usb web cam. Adapted from this example http://wiki.webmproject.org/adaptive-streaming/instructions-to-do-webm-live-streaming-via-dash

  I have managed to get something nearly works with the following command :

  ffmpeg -f video4linux2 -framerate 30 -s 640x360 -i /dev/video0
  -thread_queue_size 512 -f alsa -ar 44100 -ac 2 -i hw:2 -map 0:0 -pix_fmt yuv420p -c:v libvpx-vp9 -s 640x360 -keyint_min 60 -g 60 -speed 6 -tile-columns 4 -frame-parallel
  1 -threads 8 -static-thresh 0 -max-intra-rate 300 -deadline realtime
  -lag-in-frames 0 -error-resilient 1 -f webm_chunk -header video_360.hdr" -chunk_start_index 1 video_360_%d.chk -map 1:0 -c:a libvorbis -b:a 128k -ar 44100
  -f webm_chunk -copytb 1 -audio_chunk_duration 2000 -header video_171.hdr -chunk_start_index 1 video_171_%d.chk

  However over a period of time the audio chunks slowly get behind the video chunks, can anyone suggest a way to ensure they stay the same.