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• How to collect specific Youtube channel uploaded videos and use FFMPEG to convert to MP3 [on hold]

  6 novembre 2014, par Daniel Kirkby

  I am currently attempting to create a php script that can crawl a Youtube channel’s uploaded videos and parse them through FFMPEG to a mp3.

  .eg (https://www.youtube.com/user/PandoraMuslc/videos) download each .flv then convert to mp3 using a script that can do the whole channel instead of one at a time as there are a few hundred uploads. while I have found scripts that can make FFMPEG convert to mp3 and scripts to show the uploaded videos in XML I kinda just want to figure out how to get each video automaticly, Maybe a script that can be cron’d ?

• How can I download a video with url beginning with blob:https://…

  11 août 2017, par iMax

  I would like to know if it is possible to download a video from a URL beginning with blob :

  blob:https://www.xyz123…

  i would prefer a terminal solution (ffmpeg ?, youtube-dl ?). but i have not found anything on the world wide web.

  Again : I have the url of the video stream, which looks like the above. How can I download the complete video ?

  Update

  Ok. I now found a webpage which allowed me to download the video file I wanted :
  https://video-download.online/

  But I am still wondering if there is a Terminal solution for downloading video with blob-URL (like in arte mediathek [ example arte ] or in zdf mediathek [ example zdf ]).

  Does nobody know how to do it ?

• FFMPEG - Merge two videos with timecode sync

  25 mai 2022, par Olivier Rivard

  We are recording 2 videos from 2 cameras. There is a Timecode metadata attached two the 2 videos. But the starting and stopping of the 2 recodings could have a small difference in time. Less than a second, mostly couple of frames.

  


  One of the video has also the audio recording.
We used ffprobe to extract timecode to analyze the difference.

  


  The difference in timecode won't always be the same.

  


  Ex :
video1.mov timecode : 20:41:11:21
video2.mov timecode : 20:41:11:52

  


  This is the current command that we use to combine the 2 videos side by side to have a look similar to a Zoom call. The only issue is that our videos are out of sync.

  


  ./ffmpeg -i video1.mov -i video2.mov -filter_complex "[0:v]pad=iw*2:ih[int]; [int][1:v]overlay=W/2:0[vid]; [0:a][1:a]amix=inputs=2:duration=longest[aud]" -r 30 -map [vid]" -map "[aud]" output.mp4


  


  We want to make sure that the 2 videos are sync by the timecode.

  


  Example of a combine video :