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• How to stream two videos concurrently using js or react or node js ?

  15 novembre 2022, par itayush

  I am trying to create a video streaming website which can play multiple videos concurrently (something similar to a video management system). The requirement for now is just to be able to play two videos at the same time.

  


  All the tutorials I have seen so far are streaming only one video. I am a bit lost and helpless since I am still learning about JS as well. So, here, I am hoping that any of you could make some suggestion on the libraries that I could use (I learned about ffmpeg), even the process on how to make it work or how to kick start.

  


  Any help would be very much appreciated !

  


  I can already stream a video using node JS and I am hoping to play two videos at the same time.

  


• 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 :


  


• Combining videos with ffmpeg using crossfades and plain cuts

  9 mars 2016, par Zach

  I am writing a script to combine/slice arbitrary video files from S3 into one output video. So far, I am doing this by first trimming the videos to their proper length using ffmpeg -i input-X.mp4 -ss start -t duration slice-X.mp4 and recombining the resultant slices with the ffmpeg concat filter.

  I want to be able to crossfade and cut between videos. concat does not support transitions. What is the best way to combine videos with crossfades and cuts on the Linux command line ? Is ffmpeg the best tool for the job ?

  My question is similar to "How do you create a crossfade transition between multiple videos in FFMPEG ?" but I do not necessarily need to use ffmpeg. Also, I want to be able to fade in between some slices and cut between others.