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• How to convert messed-up .vtt sub file from youtube-dl —write-auto-sub download ?

  27 septembre 2023, par perry_the_python

  My goal is to download a YouTube video with auto-generated subtitles in a separate file like .vtt,.srt, etc.

  


  I am currently trying to achieve this with youtube-dl but I am open to other solutions if needed.

  


  When I run the following command, it downloads the video as .mp4 (which is fine) and a separate .vtt file, but the .vtt seems to be messed-up somehow and displays all the text for the whole clip at once instead of the specified times.

  


  Command I am running :

  


  youtube-dl --write-auto-sub https://www.youtube.com/watch?v=Roc89oOZOF4&list=PLJBo3iyb1U0eNNN4Dij3N-d0rCJpMyAKQ&index=45


  


  Downloads this .vtt :

  


  WEBVTT&#xA;Kind: captions&#xA;Language: en&#xA;&#xA;00:00:05.960 --> 00:00:08.290 align:start position:0%&#xA; &#xA;thank &lt;00:00:06.003><c>you  </c>&lt;00:00:06.046><c>ah </c>&lt;00:00:06.089><c>crap  </c>&lt;00:00:06.132><c>well </c>&lt;00:00:06.175><c>looks </c>&lt;00:00:06.218><c>like </c>&lt;00:00:06.261><c>the </c>&lt;00:00:06.304><c>good </c>&lt;00:00:06.347><c>Lord </c>&lt;00:00:06.390><c>just </c>&lt;00:00:06.433><c>sent  </c>&lt;00:00:06.476><c>me </c>&lt;00:00:06.519><c>a </c>&lt;00:00:06.562><c>conversation </c>&lt;00:00:06.605><c>starter </c>&lt;00:00:06.648><c>come </c>&lt;00:00:06.691><c>here  </c>&lt;00:00:06.734><c>Jesse </c>&lt;00:00:06.777><c>come </c>&lt;00:00:06.820><c>get </c>&lt;00:00:06.863><c>the </c>&lt;00:00:06.906><c>ball  </c>&lt;00:00:06.949><c>hmm</c>&#xA;&#xA;00:00:08.290 --> 00:00:10.549 align:start position:0%&#xA;thank you  ah crap  well looks like the good Lord just sent  me a conversation starter come here  Jesse come get the ball  hmm&#xA; &#xA;&#xA;00:00:10.549 --> 00:00:13.070 align:start position:0%&#xA; &#xA; &#xA;&#xA;00:00:13.070 --> 00:00:15.470 align:start position:0%&#xA; &#xA; &#xA;&#xA;00:00:15.470 --> 00:00:23.750 align:start position:0%&#xA; &#xA; &#xA;&#xA;00:00:23.750 --> 00:00:23.760 align:start position:0%&#xA; &#xA; &#xA;&#xA;00:00:23.760 --> 00:00:26.480 align:start position:0%&#xA; &#xA;&#xA;&#xA;&#xA;

  


  I have read that this may be done on purpose by YouTube.

  


  Even if this is true, is there any way to convert this .vtt to a usable format or simply download correctly-formatted auto-generated subtitles from YouTube ?

  


  Python, FFMPEG, cmd-line preferred, but anything is helpful !

  


  Thanks ! Any and all assistance is greatly appreciated !

  


• how to download panopto videos using ffmpeg ?

  22 novembre 2022, par RainBat

  I want to download a panopto video, which has two separate streams, a main and secondary.
  
for example :Getting Started welcome to Panopto

  


  when i download each of them with ffmpeg using ffmpeg -i INDEXLink -c copy "FileName.mkv",
they aren't of same length one is 4:08 and the other is 3:24, this is just in this example in other videos it might be double the other in length.
  
is it possible to download the two streams as they are displayed in the website under length 3:24 ?

  


• How to download video by url using ffmpeg-python

  22 novembre 2022, par puf

  I'm trying to write script that will be downloading part of youtube video by url. I'm using ffmpeg + ffmpeg-python library.

  


  I have terminal command that I want put to python code.

  


  ffmpeg -i "url_to_download" -ss 00:00:15 -t 00:00:25 -c:v copy -c:a copy "demo.mp4"


  


  url_to_download is an youtube stream url that I get like in an answer to another question https://stackoverflow.com/a/57134397/6583203

  


  I started writing script

  


  import ffmpeg

FROM = "00:00:15"
TO = "00:00:25"
TARGET = "demo.mp4"

ffmpeg.input(url_to_download, ss=FROM, t=TO)


  


  But I don't know how to pass parameters -c:v copy -c:a copy "demo.mp4" to ffmpeg.input

  


  Do not advice me to use subprocess. I have the same error like in a following question : Python ffmpeg won’t accept path, why ?