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• I need assistance of making a automated script for ffmpeg [closed]

  18 décembre 2024, par user2614404

  Currently i use this script that GPT generated :

  


  ffmpeg -c:v av1_qsv -b:v 0 -global_quality 20 -preset veryslow -look_ahead 64 -c:a copy -c:s copy G:\1ARC-movies\A-View-to-a-kill.mkv -i Y:\media\Movies\A_VIEW_TO_A_KILL_t05.mkv

  


  But sadly GPT being gpt, it hallucinates answers, and none of it's deeper automation code scripts were working when it made the scripts for a .ps1 script file.

  


  And as i find most of the docs quite overwhelming, i need help to simplify what i need. As i learn best when i get explained what i currently try to do, and not every variable ffmpeg can do.

  


  what i want the script to do is :

  


  1 : convert movies with AV1_QSV with "veryslow", as that's apparently from what i've read up being the best it can do

  


  2 : Global quality as close to 50 as possible (smaller, the better), as 20-6 gave the same range of percentage of 97% VMAF score, 22 gave 95%, so 20 is the largest number i can go, as VMAF via NMKODER reported any higher number was sub 97%.

  


  3 : Give it a main folder for movies and shows to scan, and convert all the media in there to their respective subfolders to a designated output folder.

  


  2 : Automatic crop detection, as some crops it to a 21:9 ratio, others has very small letterboxes. As GPT's code for that attempt for some reason used cpu instead of arc's quicksync.

  


  As this will be ran from powershell, and it's to replace my plex library, by transcoding all movies and shows, starting with the least watched ones/shows that my family has seen, as then those will be unavailable for them until unraid 7 is out of beta to read intel arc for av1.

  


• pydub no ffprobe found

  21 septembre 2019, par Virgil Sisoe

  I have an app for MacOS that is compiled with py2app. The app uses the pydub module and the latter uses ffmpeg family package.

  The problem is that once I compile the app and move it to a different OS, the subprocess call from pydub fails to find any of the ffmpeg packages even though they are installed in /usr/local/bin.

  If I launch the app from terminal ./Nameapp.app/Contents/MacOs/Nameapp then it runs no problem, but if I launch it with double click then pydub complains not finding the packages and the app hangs where ffmpeg/ffprobe should do the work.

  I can see that pydub searches in the /usr/local/bin only if launched from terminal, otherwise no. If I add /usr/local/bin to PATH, pydub doesnt complain anymore that it doesnt find ffmpeg/ffprobe, but it still gives me an error for both ffmpeg and ffprobe : [Errno 2] No such file or directory:.

  If I hardcode the path pydub.AudioSegment.converter = "/usr/local/bin/ffmpeg", the app gives me only ffprobe error [Errno 2] No such file or directory:'ffprobe': 'ffprobe'.

  On some other posts i’ve seen pydub.AudioSegment.ffprobe = "/path/to/ffprobe" but it doesnt seem to work in my case ?

  So my two questions are :

  How to hardcode the ffprobe path in pydub ?
  How to solve this without hardcoding path ?

• Ffmpeg is installed, but I get the exception : You do not have ffmpeg installed on your machine

  13 janvier 2023, par Tin Kommen

  I've searched for hours for a solution, but I haven't found one yet. Maybe someone here knows what is going wrong.

  


  I'm trying to make a Bar Chart Race in Python. Although I have downloaded and installed Ffmpeg,
I keep on getting multiple errors :

  


      MovieWriter ffmpeg unavailable; using Pillow instead.
    Traceback (most recent call last):
      File "/Users/___/PycharmProjects/data_visualization/venv/lib/python3.6/site-        packages/matplotlib/animation.py", line 251, in saving
        yield self
      File "/Users/___/PycharmProjects/data_visualization/venv/lib/python3.6/site-        packages/matplotlib/animation.py", line 1161, in save
        writer.grab_frame(**savefig_kwargs)
      File "/Users/____/PycharmProjects/data_visualization/venv/lib/python3.6/site-        packages/matplotlib/animation.py", line 549, in grab_frame
        renderer = self.fig.canvas.get_renderer()
    AttributeError: 'FigureCanvasBase' object has no attribute 'get_renderer'

    During handling of the above exception, another exception occurred:

    Traceback (most recent call last):
      File "/Users/___/PycharmProjects/data_visualization/venv/lib/python3.6/site-        packages/bar_chart_race/_make_chart.py", line 435, in make_animation
        ret_val = anim.save(self.filename, fps=self.fps, writer=self.writer)
      File "/Users/___/PycharmProjects/data_visualization/venv/lib/python3.6/site-        packages/matplotlib/animation.py", line 1161, in save
        writer.grab_frame(**savefig_kwargs)
      File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/contextlib.py", line         100, in __exit__
        self.gen.throw(type, value, traceback)
      File "/Users/___/PycharmProjects/data_visualization/venv/lib/python3.6/site-                        packages/matplotlib/animation.py", line 253, in saving
        self.finish()
              File "/Users/____/PycharmProjects/data_visualization/venv/lib/python3.6/site-        packages/matplotlib/animation.py", line 554, in finish
        self._frames[0].save(
            IndexError: list index out of range

    During handling of the above exception, another exception occurred:

    Exception: You do not have ffmpeg installed on your machine. Download
    ffmpeg from here: https://www.ffmpeg.org/download.html.
    Matplotlib's original error message below:
    list index out of range


  


  I've tried installing ffmpeg with conda, pip and homebrew. When I check the version, i get the following :

  


      ffmpeg version 4.2.3 Copyright (c) 2000-2020 the FFmpeg developers
      built with clang version 9.0.1
      configuration: --prefix=/Users/___/opt/miniconda3 --cc=x86_64-apple-darwin13.4.0-clang --disable-doc --disable-openssl --enable-avresample --enable-gnutls --enable-gpl --enable-hardcoded-tables --enable-libfreetype --enable-libopenh264 --enable-libx264 --enable-pic --enable-pthreads --enable-shared --enable-static --enable-version3 --enable-zlib --enable-libmp3lame
      libavutil      56. 31.100 / 56. 31.100
      libavcodec     58. 54.100 / 58. 54.100
      libavformat    58. 29.100 / 58. 29.100
      libavdevice    58.  8.100 / 58.  8.100
      libavfilter     7. 57.100 /  7. 57.100
      libavresample   4.  0.  0 /  4.  0.  0
      libswscale      5.  5.100 /  5.  5.100
      libswresample   3.  5.100 /  3.  5.100
      libpostproc    55.  5.100 / 55.  5.100


  


  Here is the code :

  


      import numpy as np
    import pandas as pd
    import bar_chart_race as bcr
    import os



    df = pd.read_csv('/Users/____/Documents/data/dummy_data.csv', delimiter=';', encoding="utf-8-sig")
    bcr.bar_chart_race(
        df=df,
        filename='test_win2.mov',
        orientation='h',
        sort='desc',
        n_bars=8,
        fixed_order=False,
        fixed_max=False,
        steps_per_period=50,
        interpolate_period=False,
        label_bars=True,
        bar_size=.95,
        period_label={'x': .99, 'y': .25, 'ha': 'right', 'va': 'center'},
        period_summary_func=lambda v, r: {'x': .99, 'y': .18,
                                  's': f'Totaal: {v.nlargest(8).sum():,.0f}',
                                  'ha': 'right', 'size': 8, 'family': 'Courier New'},
        perpendicular_bar_func='median',
        figsize=(3.5, 3),
        period_length=100,
        dpi=300,
        cmap='dark12',
        title='Title?',
        title_size='',
        bar_label_size=4,
        tick_label_size=4,
        shared_fontdict={'family': 'Helvetica', 'color': '.1'},
        scale='linear',
        writer=None,
        fig=None,
        bar_kwargs={'alpha': .3},
        filter_column_colors=False)