Recherche avancée

Sur d’autres sites (12541)

• Amazon Elastic Transcoder vs FFMPEG [on hold]

  17 janvier 2015, par KiranD

  I’m developing a website (php based) and there is a provision to upload videos in different formats. I’m using HTML5 player for the front end presentation. So, as the ideal format that is supported by most of the browsers is mp4, I tried using ffmpeg and it works fine.

  I would like to know which transcoder (Amazon Elastic Transcoder or FFMPEG) would be best for handling conversions parallely when there is a huge traffic.

  There could me approximately thousands of users watching the videos and may be hundreds uploading the videos at the same time. I’m using Amazon EC2 for deployment and the traffic is mostly spiky (not flat).

  I’m not sure about the acceptable speed. But, I need the one which can transcode the videos much faster.

• Trouble installing ffmpegthumbnailer on Amazon Linux AMI

  30 août 2014, par jnbankston

  I am trying to install ffmpegthumbnailer on a Ec2 instance using Amazon linux. Ffmpeg has been compiled successfully and is working.

  This is my configuration when compiling from source
  ./configure —prefix=/tmp/ffmpegthumbnailer_dir/ —enable-shared —enable-png —enable-jpeg —enable-static —with-pic PKG_CONFIG_PATH=/root/ffmpeg_build/lib/pkgconfig/

  This is the error when I try to make the binary.

  /usr/bin/ld : /root/ffmpeg_build/lib/libavformat.a(allformats.o) : relocation R_X86_64_32 against

  ff_a64_muxer' can not be used when making a shared object; recompile with -fPIC
/root/ffmpeg_build/lib/libavformat.a: could not read symbols: Bad value
collect2: error: ld returned 1 exit status
make[2]: *** [libffmpegthumbnailer.la] Error 1
make[2]: Leaving directory

  /tmp/ffmpegthumbnailer_dir’
  make[1] : * [all-recursive] Error 1
  make[1] : Leaving directory `/tmp/ffmpegthumbnailer_dir’
  make : * [all] Error 2

• getting ffmpeg to listen on specific port on amazon ec2

  12 juillet 2013, par user1913115

  I have a streaming device which can stream to any udp address/port, so if i set it up on my network , and open ffmpeg with this command :

  ffmpeg -f mpegts -i 'udp://0.0.0.0:2223?fifo_size=1000000&overrun_nonfatal=1' -re -y -strict experimental -vcodec copy -f mp4 main.mp4

  it works fine, i get the main.mp4 file recorded.
  also, when i check lsof -i it shows that ffmpeg is listening on port 2223

  however, when i run the same command on amazon ec2, it doesn't record anything. i checked, the port 2223 is open in the security group. and if i run this command, it gets packets fine :

  nc -u -l 2223

  however when i run lsof -i in amazon ec2 it shows that ffmpeg is listening to a random UDP port (e.g. 42195) every time
  has anyone run into this problem ?