HI, after runnning the primary example with some minor modifications I got an exception. I'm running version 2.0.5.

Code:

from better_ffmpeg_progress import FfmpegProcess
# Pass a list of FFmpeg arguments, like you would if using subprocess.run()
process = FfmpegProcess(["ffmpeg", "-i", "./music/arctic.flac", "-c:a", "libopus", "-b:a", "64k", "arctic.mka"])
# Use the run method to run the FFmpeg command.
process.run()

Exception:

Traceback (most recent call last):
  File "[REDACTED].py", line 5, in <module>
    process.run()
  File "[REDACTED]/.venv/lib/python3.10/site-packages/better_ffmpeg_progress/better_ffmpeg_progress.py", line 114, in run
    progress_bar.close()
UnboundLocalError: local variable 'progress_bar' referenced before assignment

I was able to add an estimated file size that seems to estimate okay after a few progress updates. It checks for changes because ffmpeg sporadically writes to disk and it's probably the most accurate when it writes.

                totalSize = 0;
                prevTotalSize = 0;
                etaSize = "unknown"

                                                if "total_size" in ffmpeg_output:
                                                        totalSize = int(ffmpeg_output.split("=")[1]);
                                                        if(percentage != "unknown" and percentage > 0):
                                                                if(totalSize != prevTotalSize):
                                                                        prevTotalSize = totalSize;
                                                                        etaSize = int(totalSize * (100 / percentage))
                                                                        if(etaSize > (1024*1024*1024)):
                                                                                etaSize = str(round(etaSize / (1024*1024*1024), 2)) + "G";
                                                                        elif(etaSize > (1024*1024)):
                                                                                etaSize = str(round(etaSize / (1024*1024), 2)) + "M";
                                                                        elif(etaSize > 1024):
                                                                                etaSize = str(round(etaSize / (1024), 2)) + "K";

                                                elif "out_time_ms" in ffmpeg_output:
                                                        microseconds = int(ffmpeg_output[12:])
                                                        secs = microseconds / 1_000_000
                                                        if file_duration is not None:
                                                                percentage = round((secs / file_duration) * 100, 1)

                                                elif "speed" in ffmpeg_output:
                                                        speed = ffmpeg_output.split("=")[1].strip()
                                                        speed = 0 if " " in speed or "N/A" in speed else float(speed[:-1])
                                                        if speed != 0:
                                                                eta = (file_duration - secs) / speed
                                                                seconds = round(eta % 60)
                                                                minutes = int(eta / 60)
                                                                hours = int(minutes / 60)
                                                                minutes = round(minutes % 60)
                                                                eta_string = f"{hours}:{minutes:02d}:{seconds:02d}"

                                                        if progress_handler is None:
                                                                print(f"Progress: {percentage}% | Speed: {speed}x | ETA: {eta_string} | Estimated Size: {etaSize}    ", end="\r")
                                                        else:
                                                                progress_handler(percentage, f"{speed}x", eta)

Hi,

when I run the script with the progress_handler I see the error message:

(env) [xxxx]$ /Users/[xxxx]/env/bin/python [xxxx]test_runner.py Running: ffmpeg -y -i [xxxx] -c:a libmp3lame -y output.mp3 -loglevel verbose -progress pipe:1 -nostats 0%| | 0/384.304 [00:00<?, ?s/s] [Error] float division by zero Exiting Better FFmpeg Progress.

The code below:

from better_ffmpeg_progress import FfmpegProcess

def handle_progress_info(percentage): print(f"The FFmpeg process is {percentage}% complete. ETA is / seconds.")

process = FfmpegProcess(["ffmpeg", "-i", "[xxxx]", "-c:a", "libmp3lame", "-y", "output.mp3"], ) process.run(progress_handler=handle_progress_info)

Adding an optional callback/event that passes the 3+ numbers (and maybe the process handle) when needed might be useful for those who want to customize the output to . Add ANSI colors . Put the info into a GUI . Reword/translate something or represent it as ASCII art. . Remove or re-arrange things

from better_ffmpeg_progress import FfmpegProcess


def handle_progress_info(percentage, speed, eta, estimated_filesize):
    print(f"The FFmpeg process is {percentage}% complete. ETA is {eta} seconds.")


# Pass a list of FFmpeg arguments, like you would if using subprocess.run()
process = FfmpegProcess(["ffmpeg", "-i", "/home/freetalk/Opinie over Auschwitz vakantiekamp VRT.mp4", "-c:v", "libvpx-vp9", "-threads", "8", "/home/freetalk/Opinie.webm"])

# Use the run method to run the FFmpeg command.
process.run(progress_handler=handle_progress_info)

CLI output:

The duration of /home/freetalk/Opinie over Auschwitz vakantiekamp VRT.mp4 has been detected as 2561.302 seconds.
Running: ffmpeg -y -i /home/freetalk/Opinie over Auschwitz vakantiekamp VRT.mp4 -c:v libvpx-vp9 -threads 8 /home/freetalk/Opinie.webm -hide_banner -loglevel verbose -progress pipe:1 -nostats
  0%|                                                                                                                               | 0/2561.3030000000003 [00:00<?, ?s/s]
[Error] local variable 'estimated_size' referenced before assignment
Exiting Better FFmpeg Progress.