[0:00] ffmpeg and open source command line tool
[0:02] for processing audio and video files it
[0:05] was created by Fabrice Bullard in the
[0:07] year 2000. the name stands for Fast
[0:08] Forward followed by the moving picture
[0:10] experts group file format today it's
[0:12] used in a wide variety of tools like
[0:14] Google Chrome and blender as well as
[0:16] video platforms like YouTube and Vimeo
[0:18] it's able to decode encode transcode
[0:20] Multiplex D Multiplex stream filter and
[0:23] play virtually any multimedia file in
[0:25] the world with over 100 different codecs
[0:27] supported it works by taking an input
[0:29] file that then passes it to a d
[0:31] multiplexer that splits the audio and
[0:33] video tracks into separate encoded data
[0:35] packets these packets are then decoded
[0:37] into uncompressed frames which can be
[0:39] further processed and filtered you might
[0:41] modify the brightness and contrast add
[0:43] subtitles or visualize the audio as a
[0:45] waveform then finally these frames are
[0:47] encoded and multiplexed back into the
[0:49] output file in addition it also comes
[0:51] with the FF play tool to easily play
[0:53] media from the command line and FF probe
[0:55] to extract metadata from the file in
[0:57] addition to tons of low-level libraries
[0:59] for develop developers building their
[1:01] own multimedia processing software to
[1:03] get started install it then open up the
[1:05] terminal use the ffmpeg command followed
[1:07] by I to supply one or more input files
[1:10] to convert that file to a different
[1:12] format simply provide the name of the
[1:13] output it will automatically detect the
[1:15] file extension and convert it to the
[1:17] proper codec or the C flag can be used
[1:19] to specify an explicit codec like mpeg-4
[1:21] for the video track and mp3 for the
[1:24] audio you may also want to change the
[1:25] quality of the output file the B flag
[1:28] can change the bitrate while the r flag
[1:30] can change the frame rate and S can
[1:32] change the resolution in some cases you
[1:34] may have multiple video clips that need
[1:36] to be combined together these clips can
[1:37] be listed in their own text file then
[1:39] combined together by specifying the
[1:41] format as concat and the codec as copy
[1:44] copy can also be used to make
[1:45] modifications to a video like when used
[1:47] with t to trim a certain number of
[1:49] seconds off of the video footage but the
[1:51] most powerful option might be VF which
[1:53] creates a filter graph that can handle
[1:55] Transformations like rotation and
[1:57] scaling and color modifications like
[1:59] brightness and contrast in addition to
[2:01] many other effects and if you have an
[2:03] SRT file for captions in your video
[2:05] ffmpeg is able to convert it to an ass
[2:07] file which can then be used with the VF
[2:09] option to easily add subtitles to your
[2:11] video if this has been ffmpeg in 100
[2:14] seconds hit the like button for more
[2:16] short videos like this thanks for
[2:17] watching and I will see you in the next
[2:19] one