Generate video sprites using just FFmpeg

Post by yyx » Thu, Nov 28, 2024, 7:10 AM UTC

brokenmachine wrote: post #2

I wish there was some way to get vlc to use external sprite files. While I'm thinking about it, external chapter files would be great too. Then you could make your own bookmarks without modifying the video file.

Post by steelcm » Thu, Nov 28, 2024, 9:16 AM UTC

pdyc wrote: post #22

steelcm wrote: post #17

Earlier quoted context omitted.

We're using this method as part of our user media upload pipeline at editsquare.com I'm guessing you're using ffmpeg wasm on your editor? One thing to note, that I didn't mention in the article, is generating a JPEG output is substantially quicker than a PNG.

good to know and great product as well editsquare.com .Would probably contact you for api sometime in future(hope to get hn discount ;-) )

Post by jvan » Thu, Nov 28, 2024, 5:19 PM UTC

steelcm wrote: post #19

jvan wrote: post #16

I've used vcs[0] to make contact sheets from videos. It has a nice feature that if it detects the frame is blacked out, it will shift the capture time so every frame on the sheet has something to look at. Easy syntax to set capture at every delta or capture x number of frames evenly distanced, columns per row, ignore a set length of end time, and frame size. [0] https://p.outlyer.net/vcs

This sounds like a more robust tool, however I wanted to keep our external tooling to a minimum. The contact sheet generation sits as part of our transcoding pipeline for uploaded media which already uses ffmpeg.