If scale is set, either width or height may be -1 to use the optimal size for preserving aspect ratio,īitrates should be specified as integers or as strings in ‘NUMk’ or ‘NUMm’ format. Stream without re-encoding (see CopyVideo). YouĬan also use None to disable the video stream (see NoVideo), or copy to copy the video Use .get_available_encoders() to get information on supported encoders. Scale ( tuple) – resize output to specified size (width, height) - optionalīit_rate ( int or str) – target video bitrate - optionalįrames ( int) – number of frames to output - optionalĮxtra ( list ( str )) – additional ffmpeg command line arguments for the stream - optional Output video stream definition Parameters class Video ( encoder, scale=None, bit_rate=None, frames=None, extra=None ) ¶īases: .Stream Subclass, or one of the convenience helper classes for specific codecs. Supported duration types: timedelta, Decimal, float, intĭuration ( timedelta ( seconds = 3.14 )) Duration ( '5.25' ) Duration ( 60.5 ) Duration ( 3600 ) class Stream ( encoder ) ¶ĭon’t use this class directly.

Helper class for parsing duration and time values - don’t use it directly. This allows you to use all functionality of ffmpeg That are passed directly to ffmpeg in appropriate places. Stream, format, input and output definitions all take an optional extra parameter - a list of strings run () # Split video into separate video and audio files FFmpeg (), Output ( 'audio.m4a', streams = ) ]). run () # Convert 1 minute of input video starting at 5min mark into 1080p HEVC video # with 160kbit AAC audio, stripping any subtitles FFmpeg ( Input ( 'input.mkv', seek = 300, duration = 60 ), Output ( 'output.mp4', Video ( 'libx265', scale = ( - 1, 1080 ), preset = 'veryfast', crf = 20 ), Audio ( 'aac', bit_rate = '160k' ), NoSubtitles ) ). # Convert MP4 to MKV with default codecs and options FFmpeg ( 'input.mp4', 'output.mkv' ).

Ffmpeg convert mkv to mp4 audio aac