#Python ffmpeg example code

It runs with subprocess.Popen to silence stdout/stderr.

In order to know the progress percentage, it uses the duration reported by ffprobe, since the normal progress info doesn’t seem to contain such info.

The watcher runs in its own gevent greenlet, but it could be changed to use actual threads instead if desired.

It creates and listens on a unix-domain socket and passes that to ffmpeg.

Sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)Ĭhild = gevent.spawn(_watch_progress, filename, sock, handler)ĭuration = float(ffmpeg.probe('in.mp4')) Value = parts if len(parts) > 1 else None Here’s a semi-hacked-together example using gevent and the -progress param mentioned: import gevent.monkey _all()ĭef _watch_progress(filename, sock, handler):Ĭonnection, client_address = sock.accept() This command writes each frame of a video as an image to disk.Īt the very least it would be great if we could see the output generated by running ffmpeg on commandline ffmpeg -i test.mp4 %06d.png -hide_banner Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'workflow_video_01.mp4':ĭuration: 00:50:57.00, start: 0.000000, bitrate: 7040 kb/s The 'terminated' event is emitted when FFmpeg is terminated by calling FFmpeg.terminate().Is there a way to track a progress after running an ffmpeg?įor example, below is what i would like to do: import ffmpegįfmpeg.input('test.mp4').output('frame_%06d.jpg').run() The 'completed' event is emitted when FFmpeg is successfully exited. The 'progress' event is emitted when FFmpeg reports progress.

progress: a namedtuple with frame, fps, size, time, bitrate, speed fields.

The 'stderr' event is emitted when FFmpeg writes a line to stderr. The 'start' event is emitted just before FFmpeg is executed.

arguments: a sequence of arguments to execute FFmpeg.

Gracefully terminates the running FFmpeg process. execute()Įxecutes FFmpeg using specified options and files. An arbitrary number of output files can be specified by calling this method multiple times. An arbitrary number of input files can be specified by calling this method multiple times. Specifies a global option -key or -key value input(url, options=None, **kwargs)

executable: the path to the ffmpeg executable.

execute ()) API FFmpeg init(executable='ffmpeg')

#Python ffmpeg example code

on ( 'error' ) def on_error ( code ): print ( 'Error:', code ) asyncio.

on ( 'terminated' ) def on_terminated (): print ( 'Terminated' ). on ( 'completed' ) def on_completed (): print ( 'Completed' ). on ( 'progress' ) def time_to_terminate ( progress ): # Gracefully terminate when more than 200 frames are processed if progress. on ( 'progress' ) def on_progress ( progress ): print ( progress ). on ( 'stderr' ) def on_stderr ( line ): print ( 'stderr:', line ). on ( 'start' ) def on_start ( arguments ): print ( 'Arguments:', arguments ).

output ( 'output.ts', # Use a dictionary when an option name contains special characters, f = 'mpegts', ). input ( 'rtsp:///cam', # Specify file options using kwargs rtsp_transport = 'tcp', rtsp_flags = 'prefer_tcp', ).

Usage import asyncio from ffmpeg import FFmpeg ffmpeg = FFmpeg (). A python interface for FFmpeg using asyncio Requirements