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• Use FFMPEG to merge RTSP stream from 4 web cameras into a single mosaic stream to YouTube Live [duplicate]

  19 octobre 2020, par Richard West

  I'm trying to take a live RSTP feed from 4 different cameras and create a 2x2 tile mosaic video stream to push to YouTube Live.

  


  I have good results using the ofllowing comand for a single feed, but I have not have any luck in using some of the samples I have found for a 2x2 mosiac.

  


  Some of the camera feeds are 3840x2160 and others are 1920x1080. So I'm expecting that I will need to have some resize logic in place. I would be happy with a 1920x1080 output feed pushed to YouTube.

  


  My current, single camera command, which yields good results, is :

  


  ffmpeg -rtsp_transport tcp -i rtsp ://192.168.1.42:7447/xxxxxxxx -tune zerolatency -vcodec libx264 -pix_fmt + -c:v copy -c:a aac -strict experimental -f flv rtmp ://a.rtmp.youtube.com/live2/xxxx-xxxx-xxxx-xxxx-xxxx

  


  If I could specific a single camera to pull sound from that would be awesome, but I'd also be happy with no sound if that is necessary.

  


• generating a video mosaic in client-side js

  1er novembre 2020, par redbrain

  I'm writing a web app for the creation of mosaic videos, where multiple videos can tiled next to each other, like a virtual meeting or grid of surveillance cameras. I'd like the user to be able to download their creation as an video file.

  


  I've currently been accomplishing this using a Node.js server to serve the rest of the site (which is static html/js) and then having one route execute ffmpeg and return the result. However, if this can be accomplished on the client side, the app would be easier to scale since I'd only have to serve static files, and nicer to write with only the client-side in mind.

  


  Does anyone know of a proper or clean way to do this ? I've looked at the following methods so far :

  


  

  • using ffmpeg ported to webassembly - this seems to be used constantly for any sort of client-side video editing ; however it seems overkill and clunky for this purpose

  


  • tiling all the videos in a <canvas></canvas> and rendering its output to an mp4 via the MediaStreamAPI - could be the best way, but it's not well documented

  


  


  If I'm missing something obvious, please let me know. I figured I would look further for the best method before writing further. Thanks in advance.

  


• FFMPEG using Google Drive API instead of Shared URL

  25 novembre 2020, par Marcus

  We are using FFMPEG to stream a Google Drive URL into a node application.

  


  Is there an FFMPEG method or library we can use to stream to FFMPEG using the Google Drive API instead of using the standard public shared URL ?

  


  At the moment using the URL works fine if the file size is <100mb but with bigger files we get an error :

  &#xA;

  https://drive.google.com/uc?export=download&id=fileId: Invalid data found when processing input


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  This is because we reach the pesky gDrive virus roadblock page :&#xA;

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