paullkak.blogg.se - Ffmpeg h264 x264 q fast very fast

In the same way as for formats, FFmpeg / Libav lists the codecs that it can handle: avconv -codecsįFmpeg / Libav also has a significant base of filters that can modify the content of each stream, such as changing resolution, change the volume of a track, superimpose a logo etc. By using codecs, compression can result in the loss of perceivable quality in picture or sound. ) including reducing the flow rate (Kbits / s). The codec is an algorithm used to encode the video or sound to suit the transport protocol (IP, DVB, file. We talk about multiplexing different tracks or streams in a format.įFmpeg/Libav provide a list of supported format: avconv -formatsĭ mov,mp4,m4a,3gp,3g2,mj2 QuickTime / MOV

one or more video streams (a movie or tv channels.).

Inside a container can be inserted (mux) or extract (demux): The format is the container that allows the transport of video, audio and subtitles or as a file (mkv, mov. Or directly from the command line interface, as explained bellow.Īn introduction to the terminology of video is useful to understand the FFmpeg syntax. įFmpeg or Libav can be use from GUI like: It also possible to compile it by following the instructions available here. To find out which deposit the package is available, look here: debpkg:libav or here debpkg:ffmpeg. To install ffmpeg: apt-get install ffmpegīe careful, FFmpeg is not available on Debian 8 Jessie, but in Backports. To install libav: apt-get install libav-tools

Transform a image sequence into a video.Organize the order of the streams (mapping).