assert parse_progress_line("out_time_ms=1000000") == 1.0
assert parse_progress_line("time=00:00:02.50") == 2.5
assert parse_progress_line("frame=10") is None
assert parse_progress_line("garbage") is None
print("progress parsing OK")FFmpeg Execution + Progress
Run ffmpeg subprocess commands with a progress bar and optional callback.
run_ffmpeg_with_progress
def run_ffmpeg_with_progress(
cmd:List, # The ffmpeg command and arguments
total_duration:Optional=None, # Total duration in seconds for a determinate bar, else indeterminate
description:str='Processing', # Description text for the progress bar
verbose:bool=False, # If True, prints detailed ffmpeg output
progress_callback:Optional=None, # Optional callback receiving current progress in seconds
)->None: # Raises FileNotFoundError or subprocess.CalledProcessError on failure
Run an ffmpeg command with a progress bar.
parse_progress_line
def parse_progress_line(
line:str, # A line of stderr output from ffmpeg
)->Optional: # Current time in seconds, or None if the line has no progress info
Parse a progress line from ffmpeg stderr output.