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FFmpeg 8.1

ffmpeg.org

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Re: FFmpeg 8.1

#31

Post by axus »

qingcharles wrote: post #27
shevy-java wrote: post #20

FFmpeg is really great. The only wish I'd have is for the usage to become simpler - both for regular stuff, but also for advanced filtering. If anyone remembers, avisynth was pretty cool back in the days. You could kind of script video/audio manipulations, a bit like a UNIX/Linux pipe, but kind of simpler, in my opinion. FFmpeg allows for many similar operations, but remembering anything here is ... hard. I'd love fo…

One of the best uses of LLMs is to help find the right command line options for tools like ffmpeg.

It won't always give you a perfect answer the first time, but it's much better than memorizing the manual or interpreting a forum discussion. Haven't used it for ffmpeg, but lots of other command lines.

Re: FFmpeg 8.1

#32

Post by dylan604 »

shevy-java wrote: post #23
ghgr wrote: post #12

> Oh there's a new version of ffmpeg, I'll just quickly build it from source... no I can't wait I'll download the binary https://www.youtube.com/watch?v=9kaIXkImCAM

Building ffmpeg itself from source is actually quite easy. The hardest part IMO is getting the necessary codecs to work; this can take a little while. If you know what audio and video codecs you want and need, and if you get them installed properly, then compiling ffmpeg is really simple and straightforward. It works almost always for me, and I have compiled ffmpeg from source for like +10 or even +15 years. For refe…

quite easy? like learning to draw an owl?

getting the stock ffmpeg to compile/build might be "easy", but once you start adding on additional codecs and other features that get you into dependency nightmares "easy" is not the word I would use. I have not been able to use the stock ffmpeg since forever. for example, i see no openssl enabled in your config. I see no freetype. I see you've disabled openjpeg. clearly, you and i use ffmpeg differently which just goes to show your "easy" is very misleading

Re: FFmpeg 8.1

#33

Post by Amorymeltzer »

ghgr wrote: post #12

> Oh there's a new version of ffmpeg, I'll just quickly build it from source... no I can't wait I'll download the binary https://www.youtube.com/watch?v=9kaIXkImCAM

For anyone vaguely familiar with ffmpeg, don't sleep on this video. Quite funny, and everything from `yadif` (which I dealt with today!) to mkvtoolnix to "But then it will explode if you have an apostrophe in your file name. Because it doesn't understand that."

Re: FFmpeg 8.1

#34

Post by dylan604 »

shevy-java wrote: post #20

FFmpeg is really great. The only wish I'd have is for the usage to become simpler - both for regular stuff, but also for advanced filtering. If anyone remembers, avisynth was pretty cool back in the days. You could kind of script video/audio manipulations, a bit like a UNIX/Linux pipe, but kind of simpler, in my opinion. FFmpeg allows for many similar operations, but remembering anything here is ... hard. I'd love fo…

Once I got over the -filter_complex is well, complex phobia, it isn't that bad. The command line makes it look daunting to be sure. But thinking of it as the name suggests of "filter chains" makes it less daunting. It is still cumbersome as every thing needs to be in the command.

Debugging commands gets hairy the more complex they get but you'll get muscle memory on how to search/replace to make line breaks to make it easier, similar to breaking up gnarly SQL. The worst part about debugging is the error messages can be misleading when it interprets the filter chain incorrectly because of some issue you've typoed in there somewhere. Even those start to become recognizable as "it thinks this, which means I probably messed up this other thing instead". To be fair, I work with ffmpeg daily using some commands that make your eyes bleed. So for someone using it every now and then, the practice from repetitive use just takes longer.

Also, saving things as shell scripts helps a lot. A simple script that does the same thing with a few adjustable params can be done with %1, %2 usage or even cleaner with getopts. You can then change small things within a tested complex command.

Re: FFmpeg 8.1

#35

Post by mihaelm »

edgarvaldes wrote: post #24

One of the best open-source tools out there. I'm a frequent user of Plex, Jellyfin, Tunarr, local music files, etc. I use it weekly to extract subtitles, trim videos, convert music formats, and remove audio tracks. After writing the previous paragraph, I realized I've never donated to the project; it's time to change that.

It's a lower-level component in so much stuff we're not even aware of.

Re: FFmpeg 8.1

#36

Post by jamesfmilne »

iso1631 wrote: post #9
yboris wrote: post #3

Earlier quoted context omitted.

TIL: JPEG XS - an image and video codec that offers both visually and mathematically lossless quality for low latency implementations. Additionally, JPEG XS compressed content is indistinguishable from the original uncompressed content. https://en.wikipedia.org/wiki/JPEG_XS

We use JXS when latency is critical. Most h24/265 decodes will have a 10 frame glass-glass delay, JXS drops that to 3 or 4, at a cost of bandwidth (our UHD jxs streams are 1.5gbit rather than 200mbit for hevc)

Yeah, we've been deploying JPEG-XS for high bitrate streaming for a while.

A lot of our customers are moving their grading systems into data centres and streaming the images over IP back to their grading suites.

I've got it down to less than 1 frame for encode-transport-decode, but you've still got to copy the image to an SDI card and wait for that to clock out.

Re: FFmpeg 8.1

#37

Post by jamesfmilne »

yboris wrote: post #3
gyan wrote: post #2

Changelog: ffprobe -codec option EXIF Metadata Parsing gfxcapture: Windows.Graphics.Capture based window/monitor capture hxvs demuxer for HXVS/HXVT IP camera format MPEG-H 3D Audio decoding via mpeghdec D3D12 H.264 encoder drawvg filter via libcairo ffmpeg CLI tiled HEIF support D3D12 AV1 encoder ProRes Vulkan hwaccel DPX Vulkan hwaccel Rockchip H.264/HEVC hardware encoder Add vf_scale_d3d12 filter JPEG-XS parser JPE…

TIL: JPEG XS - an image and video codec that offers both visually and mathematically lossless quality for low latency implementations. Additionally, JPEG XS compressed content is indistinguishable from the original uncompressed content. https://en.wikipedia.org/wiki/JPEG_XS

I've had great results using JPEG-XS to transport video for colour grading in feature film & TV post production. At 3:1 or 4:1 compression ratio is effectively lossless.

It is patent-encumbered though, you have to pay license fees to deploy it.

Re: FFmpeg 8.1

#38

Post by HelloUsername »

gyan wrote: post #2

Changelog: ffprobe -codec option EXIF Metadata Parsing gfxcapture: Windows.Graphics.Capture based window/monitor capture hxvs demuxer for HXVS/HXVT IP camera format MPEG-H 3D Audio decoding via mpeghdec D3D12 H.264 encoder drawvg filter via libcairo ffmpeg CLI tiled HEIF support D3D12 AV1 encoder ProRes Vulkan hwaccel DPX Vulkan hwaccel Rockchip H.264/HEVC hardware encoder Add vf_scale_d3d12 filter JPEG-XS parser JPE…

Wait, are you https://www.gyan.dev/ffmpeg/builds/ ?

Re: FFmpeg 8.1

#39

Post by blell »

ghgr wrote: post #12

> Oh there's a new version of ffmpeg, I'll just quickly build it from source... no I can't wait I'll download the binary https://www.youtube.com/watch?v=9kaIXkImCAM

emerge ffmpeg ;)

Re: FFmpeg 8.1

#40

Post by ninju »

dylan604 wrote: post #32
shevy-java wrote: post #23

Earlier quoted context omitted.

Building ffmpeg itself from source is actually quite easy. The hardest part IMO is getting the necessary codecs to work; this can take a little while. If you know what audio and video codecs you want and need, and if you get them installed properly, then compiling ffmpeg is really simple and straightforward. It works almost always for me, and I have compiled ffmpeg from source for like +10 or even +15 years. For refe…

quite easy? like learning to draw an owl? getting the stock ffmpeg to compile/build might be "easy", but once you start adding on additional codecs and other features that get you into dependency nightmares "easy" is not the word I would use. I have not been able to use the stock ffmpeg since forever. for example, i see no openssl enabled in your config. I see no freetype. I see you've disabled openjpeg. clearly, you…

https://commons.wikimedia.org/wiki/File:How_to_draw_an_owl_m...
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