Recherche avancée

Sur d’autres sites (7916)

• VB.Net Stream/Port Image To FFmpgeg using Standard Input

  31 janvier 2015, par Zakir_SZH

  hope all active member of this community are fine.
  in my project i need to convert several image to video file.
  Currently i have to first save the images to PC then use ffmpeg to read that images from the pc and convert it to movie.

  But rather than save image to pc, i want to send image directly to ffmepg using StandardInput call. Ffmped does support that. but i don’t know how to use that.

  i have search internet a lot and all i found is getting output/response from ffmpeg using standarderror as ffmepg write to standerror instead of standardouput.

  below link something similar to what i look for that that code don’t work and also that use mp3 file instead of image/graphics.

  http://tiku.io/questions/3075356/convert-wma-stream-to-mp3-stream-with-c-sharp-and-ffmpeg

  can any one help me out, how to send image from picturebox/graphics object to ffmpeg one by one ?

  thanks in advance

  best regards

• How to install ffmpeg-php on CentOS 7

  8 février 2015, par Mark van Marion

  I have succesfully installed ffmpeg on CentOS 7, but just wont succeed installing the ffmpeg-php, because i get the following error (this is when i do the ’./configure’ command) :

  checking for PHP extension directory... /usr/lib64/php/modules
  
  checking for PHP installed headers prefix... /usr/include/php
  
  checking if debug is enabled... no
  
  checking if zts is enabled... no
  
  checking for re2c... no
  
  configure: WARNING: You will need re2c 0.13.4 or later if you want to regenerate PHP parsers.
  
  checking for gawk... gawk
  
  checking for ffmpeg support... yes, shared
  
  checking whether to force gd support in ffmpeg-php... no
  
  checking for ffmpeg headers... 
  
  configure: error: ffmpeg headers not found. Make sure ffmpeg is compiled as     shared libraries using the --enable-shared option

  But ffmpeg is compiled as shared libary..

  ffmpeg version 2.2.1 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Jun 17 2014 01:25:46 with gcc 4.8.2 (GCC) 20140120 (Red Hat 4.8.2-16)
  
    configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --enable-shared --enable-runtime-cpudetect --enable-gpl --enable-version3 --enable-postproc --enable-avfilter --enable-pthreads --enable-x11grab --enable-vdpau --disable-avisynth --enable-frei0r --enable-libdc1394 --enable-libgsm --enable-libmp3lame --enable-libnut --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -fPIC' --disable-stripping
  
    libavutil      52. 66.100 / 52. 66.100
  
    libavcodec     55. 52.102 / 55. 52.102
  
    libavformat    55. 33.100 / 55. 33.100
  
    libavdevice    55. 10.100 / 55. 10.100
  
    libavfilter     4.  2.100 /  4.  2.100
  
    libswscale      2.  5.102 /  2.  5.102
  
    libswresample   0. 18.100 /  0. 18.100
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Hyper fast Audio and Video encoder
  
  usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...

  I have searched all over the internet, but cant find a answer. I hope someone can help me !

• What do the options in ffmpeg mean ?

  14 juillet 2022, par bui the vuong

  I don't understand what these options ( -r 30 -s 1280x720 -preset superfast -profile:v baseline) mean , searched but couldn't find , hope someone can help :

  


  ffmpeg -i rtmp://localhost:1935/stream/$name
          -c:a libfdk_aac -b:a 128k -c:v libx264 -b:v 2500k -f flv -g 30 -r 30 -s 1280x720 -preset superfast -profile:v baseline rtmp://localhost:1935/hls/$name_720p2628kbs