Advanced search

On other websites (8120)

• Revision b8e027989f: Remove buffer-to-buffer copy logic This is the first in a series of commits to

  14 January 2013, by John Koleszar

  Changed Paths: Modify /vp9/common/vp9_alloccommon.c Modify /vp9/common/vp9_onyxc_int.h Modify /vp9/decoder/vp9_decodframe.c Modify /vp9/decoder/vp9_onyxd_if.c Modify /vp9/encoder/vp9_bitstream.c Modify /vp9/encoder/vp9_onyx_if.c Remove buffer-to-buffer copy logic This is the first (...)

• How to Download YouTube Videos in 1080p with English Subtitles Using yt-dlp with Python 3

  30 July 2024, by edge selcuk

  I am trying to download YouTube videos using yt-dlp in Python 3.9. I want to download videos in 1080p quality and if 1080p is not available, it should download the best available quality. The audio and video files should be merged into a single MP4 file, and I have ffmpeg installed to handle the merging process.

  


  Here is my script:

  


  import os
import sys
from yt_dlp import YoutubeDL

def download_video(url):
    output_dir = r"/path"  # Update this path

    # Ensure the output directory exists
    if not os.path.exists(output_dir):
        os.makedirs(output_dir)
    
    ydl_opts = {
        'format': '(bestvideo[height<=1080][ext=mp4]/bestvideo)+bestaudio/best',
        'merge_output_format': 'mp4',
        'write_auto_sub': True,
        'writesubtitles': True,
        'subtitleslangs': ['en'],
        'subtitlesformat': 'vtt',
        'embedsubtitles': True,
        'outtmpl': os.path.join(output_dir, '%(title)s.%(ext)s'),
        'postprocessors': [{
            'key': 'FFmpegVideoConvertor',
            'preferedformat': 'mp4',
        }],
    }

    with YoutubeDL(ydl_opts) as ydl:
        ydl.download([url])

if __name__ == "__main__":
    if len(sys.argv) != 2:
        print("Usage: python download_video.py ")
        sys.exit(1)

    youtube_url = sys.argv[1]
    download_video(youtube_url)


  


  This script successfully downloads the video in 1080p quality or the best available quality and merges the audio and video files as intended. However, it does not download the subtitles as intended.

  


  I have ffmpeg installed for merging the video and audio files. How can I modify this script to ensure that English subtitles are downloaded and embedded in the video file?

  


• FFmpeg overlay a series of animated gifs onto a video using a filter_complex script text file [closed]

  1 March 2024, by Massimo Papi

  I am trying to overlay some animated gifs over a video with this command:

  


  ffmpeg -y -i 002_meteo.mp4 -/filter_complex graph.txt -s 1920x1080 -r 25 -b:v 5M -c:v h264_qsv -   flags +ilme+ildct -field_order tt -c:a aac -ar 48000 -b:a 192k 003_meteo.mp4


  


  My graph.txt (part of) looks like

  


  movie='./ICONS/pioggia_debole1.png'[1];    
movie='./ICONS/pioggia_debole1_notte.png'[2];    
movie='./ICONS/pioggia_debole1.png'[3];    
movie='./ICONS/pioggia_debole1_notte.png'[4];    
movie='./ICONS/coperto.png'[5];
[0][1]overlay=x=310:y=350:enable=between(t\,0\,10)[0-1];
[0-1][2]overlay=x=310:y=710:enable=between(t\,0\,10)[0-2];
[0-2][3]overlay=x=950:y=350:enable=between(t\,0\,10)[0-3];
[0-3][4]overlay=x=950:y=710:enable=between(t\,0\,10)[0-4];
[0-4][5]overlay=x=1580:y=350:enable=between(t\,0\,10)


  


  If I use this line, I can accomplish loop:
ffmpeg -y -i 002_meteo.mp4 -ignore_loop 0 -i coperto.gif -filter_complex "overlay=x=310:y=350:shortest=1" -codec:a copy -codec:v libx264 output.mp4

  


  If I put the filter_complex parameters into my text file gifs loop only for the time of gif duration and only the first time, after that they are not animated anymore.
Any help would be appreciated. Thanks.