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Sur d’autres sites (8025)

  • Create time lapse video from other video

    17 décembre 2023, par Orlando

    Using avconv (or even ffmpeg, so I can use as a reference), how can I create a time lapse video by taking only anchor/reference frames from another video ? Most information I find is on how to create a time lapse video by combining images, and I'd like to do it by extracting frames from a video. Say, if a video is 30 seconds long at 30 FPS, I'd like to take 60 out of those 900 frames (900/60 = every 15 seconds) to produce a 2 second video.

    


  • Create time lapse video from other video

    27 janvier 2017, par Orlando

    Using avconv (or even ffmpeg, so I can use as a reference), how can I create a time lapse video by taking only anchor/reference frames from another video ? Most information I find is on how to create a time lapse video by combining images, and I’d like to do it by extracting frames from a video. Say, if a video is 30 seconds long at 30 FPS, I’d like to take 60 out of those 900 frames (900/60 = every 15 seconds) to produce a 2 second video.

  • Sync Video Multitrack Recording (with video.js and FFMpeg ?) [closed]

    28 avril 2020, par finnk

    I am writing a web application that gives the ability to record multiple videos and merge them into a single split-screen video. The videos have to be synchronous with each other, so if the user had already recorded a video, it will playback on the next recording. So the captured video(s) play(s) while recording.
Right now, I implemented it by using video.js and videojs-record. 
I merge the videos server-side using FFmpeg( client-side would be much better, but I didn't figure out how to achieve this)

    



    When I start the record, the playback of each recorded video begins as well. 
This approach produces, of course, a small latency between the videos.

    



    Any suggestions on how to sync the recordings ?

    



    Do you know ay better other libraries ?

    



    Thank you & Best regards,

    


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