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I’m slightly confused by the title of this submission. Doesn’t this post suggest a 20% speed up on Windows devices? I don’t see Apple mentioned.
by cebert 3y ago
I’m slightly confused by the title of this submission. Doesn’t this post suggest a 20% speed up on Windows devices? I don’t see Apple mentioned.
- majormajor 3y ago"Apple Prores" is a codec.
- cebert 3y agoThanks for the clarification!
- crooked-v 3y agoFor more context, it's extremely popular for use in film and TV post-production, and is designed specifically for that role (as opposed to the needs of consumer-facing codecs used for disc storage or streaming).
- midasuni 3y agoIf I remember rightly it was “Elvis Presley” who contributed the ProRes codec in the first place. Or maybe I’m thinking of a similar closed codec. There are only a handful of people that really contribute to ffmpeg, yet its codebase runs pretty much the entire video based internet. It’s a marvel of the modern world.
- zerocrates 3y agoYou do remember rightly: https://github.com/FFmpeg/FFmpeg/commit/5554de13b29b9bb812ee5cfd606349873ddf0945 https://github.com/FFmpeg/FFmpeg/commit/5554de13b29b9bb812ee...
- skywal_l 3y agoI am always impressed by the collective memory of HN commenters.
- tombert 3y agoI genuinely feel like ffmpeg is kind of like a "secret weapon". Occasionally my dad will need some help with video or audio, and he'll see me hack together an ffmpeg command (even on Android with termux in a pinch!) and be utterly astounded. Being able to quickly slice up the video without re-encoding, or being able to stitch video together without a re-encode, or being able to arbitrarily glue a bunch of videos together all of different formats and it will work flawlessly. It's a piece of software I would gladly pay hundreds of dollars for, and yet it manages to be free. I think I'll visit their donate page right now.
- vrosas 3y agoIt’s amazing how many companies are literally just ffmpeg-as-a-service. It wasn’t a ton of money but I saved my last company a few hundred bucks a month they were paying a service to convert .gif files to .mp4
- tombert 3y agoImageMagick as well! At a big social media company I used to work at [1], they were spending a not-insignificant amount of money (in the millions) to their CDN/caching provider just to have images resized and converted to PNG and WebP. I am pretty sure all this CDN was doing was running the image through ImageMagick or GraphicsMagick and calling it a day, and charging absurd quantities of money to do it. [1] it's not hard to find my employment history but I ask you not to say it publicly here
- xattt 3y agoWas this an Apple employee working covertly to cement ProRes as an open codec?
- Dylan16807 3y agoThough if you used a normal codec but only output I-frames at very high quality you'd end up pretty close.
- replygirl 3y agoby close you mean proxy files?
- Dylan16807 3y agoNo, by close I mean you'd hit the same use case and have similar attributes. Probably not as fast but it would scrub well.
- kiririn 3y agoWhy would only I-frames make a (positive) difference? Sure it makes decoding for seeking easier/faster but it should end up being lower quality at equivalent bitrate?
- crazygringo 3y agoBecause it's meant for editing, to be able to cut anywhere without re-encoding. So it needs to be all I-frames. And you're going to use a very high bitrate. This is way more space than consumer codecs use. But still way less than uncompressed video.
- kiririn 3y agoI’m struggling to imagine a use case for removing bits of a video and then saving that intermediate back out without editing or reencoding but if that’s what a video editing workflow calls for then fair play!
- dylan604 3y agoyou just described pretty much every single modern day video capture. pretty much all of the dslr/mirrorless cameras are capturing a higher bitrate h.264 as source.