Recherche avancée

Sur d’autres sites (12265)

• How can I improve the frame rate of my Raspberry Pi to YouTube stream ?

  2 août 2021, par RDowns

  I am using a Raspberry Pi 4 2GB to live stream to YouTube.

  


  The performance is pretty poor at the moment as I am trying to go through terminal and I feel the setting's are not correct. Performance is OK however if I go directly through YouTube studio and use the 'Webcam' option instead of 'Stream'.

  


  These are the settings that I am currently using :

  


  raspivid -o - -t 0 -vf -hf -fps 30 -b 6000000 | ffmpeg -threads 0 -f v4l2 -i /dev/video0 -ar 44100 -ac 2 -acodec pcm_s16le -f s16le -ac 2 -i /dev/zero -acodec aac -ab 128k -strict experimental -s 640x480 -b 6000000 -aspect 16:9 -vcodec h264_omx -vb 820k -pix_fmt yuv420p -g 60 -r 30 -f

  


  What options can I change in this command to improve the frame rate and give better performance ?

  


• 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 !

  


• Restream youtube live channel wth vlc or ffmpeg`

  25 juin 2014, par Andy

  Is it possible to restream a channel with vlc or ffmpeg ? I dont think neither will take youtube url as input for restreaming - would there need to be url snooping or w/e its called to get the proper input url ?