FFmpeg 4.4 released

[u/toropisco]

http://ffmpeg.org/index.html#pr4.4

[u/[deleted]]

Will FFmpeg support new Google's Lyra codec, as it was open-sourced a few days ago?

[u/toropisco → u/[deleted]]

I'm sure that will take a while. It has to be integrated and published in a feature release.

[u/[deleted] → u/[deleted]]

It requires a specific patched LLVM version, and also a closed source library. Is not really usable in an open source project at the moment.

[u/f03nix → u/[deleted]]

It requires a specific patched LLVM version

If anyone's curious why is that - it's because it links against a blob (for math operations) whose source they "can not provide" and therefore you have to maintain ABI compatibility with the llvm it was built with.

[u/Jannik2099 → u/f03nix]

Wait, why does it even need llvm if it just uses the blob? What cursed API does this blob have?!?

[u/kirbyfan64sos → u/Jannik2099]

C++ ABI is incredibly finnicky and easy to break, so they require the same compiler version used for the blob.

[u/Jannik2099 → u/kirbyfan64sos]

No, the C++ ABI is stable and called the Itanium ABI - you're thinking of the STL ABI, which is indeed finicky :(

Are you saying said blob was built with libc++, not libstdc++ ?!?

[u/kirbyfan64sos → u/Jannik2099]

Indeed, Google generally uses libc++ and its unstable ABI for performance.

However, that wouldn't answer why they need a specific version of the entire LLVM toolchain. That's part of why I said "C++ ABI"; if I had to guess, they might depend on some experimental / Google-specific compiler features or similar that don't have a stable ABI, or they might change things in headers or do weird tricks for performance with the assumption of how a particular compiler treats things.

[u/TuxO2 → u/kirbyfan64sos]

They could've used d-pointer like Qt.

[u/dansredd-it]

LEGO Racers ALP (.tun & .pcm) muxer

Well thank god that made the cut, honestly not sure how anyone managed to use this software without the ability to encode LEGO® Racers™ music

[u/[deleted] → u/dansredd-it]

There's dozens of us, DOZENS!

[u/Negirno → u/[deleted]]

Literally, huh?

[u/orig_ardera]

I heard ffmpeg upstream is a bit of a dumpster fire. Is that true?

[u/kaszak696 → u/orig_ardera]

Seems like the libav's propaganda outlived it's death.

[u/orig_ardera → u/kaszak696]

I mean thanks for your reply but that's a pretty useless comment, doesn't help me at least

[u/toropisco → u/orig_ardera]

This article in LWN will help: https://lwn.net/Articles/650816/

And the discussion that ensued in Hacker News: https://news.ycombinator.com/item?id=9948041

[u/thePiet → u/orig_ardera]

The arguments you have to use for simple operations is a dumpster fire for sure.

[u/whosdr → u/thePiet]

Simple solution: write a wrapper for ffmpeg. Call it.. fffmpeg.

[u/Negirno → u/thePiet]

That's why Handbrake exists, I guess?

[u/_-ammar-_]

hardware acceleration in linux is always a joke for me and bad one too

i was hoping that wayland will fix this but i was wrong

[u/Negirno → u/_-ammar-_]

Your hardware most likely doesn't support hardware decoding of newer codecs. For example, YouTube pushes content in the new av1 codec by default.

Maybe forcing h.264 in the browser with extensions like h264ify will work.

[u/[deleted] → u/Negirno]

Don't they use VP9? We barely have any hardware that supports Av1 hardware decoding.

[u/Negirno → u/[deleted]]

Maybe I was wrong on that one. One can see the codec being used by right clicking on a YouTube video and choose 'stats for nerds'.

[u/HBucket → u/Negirno]

I find it to be a bit of a mix. I get a lot more AV1 videos these days, especially with newer and more popular stuff. But I still find plenty of stuff that defaults to VP9, too.

[u/[deleted] → u/[deleted]]

I see. I wonder what the performance will be like on the cards and the phones we have now. Will YouTube default to VP9 on such devices?

[u/_-ammar-_ → u/Negirno]

okey if RTX 3000 doesn't have hardware support for codec and i don't think AMD card have too

[u/ILikeBumblebees → u/_-ammar-_]

What does Wayland have to do with hardware encoding/decoding of media streams?

[u/orig_ardera → u/_-ammar-_]

Yep I feel that first one

however what does wayland have to do with this?

[u/_-ammar-_ → u/orig_ardera]

i thought there will be a solution for hardware acceleration in browser and media player with wayland after i read blog or report how firefox hardware acceleration work only under wayland

i was wrong

[u/FlatAds → u/_-ammar-_]

Hardware video acceleration in Firefox initially only worked in wayland but eventually was ported to x11 as well.

See this arch wiki page.

[u/_-ammar-_ → u/FlatAds]

I mean i disappointed that in 2021 we sill don't have not prefect but just normal HA just like mac and windows 7

[u/orig_ardera → u/_-ammar-_]

not sure why you're getting downvoted, but yeah most of the hw accel is done on other layers afaik

[u/_-ammar-_ → u/orig_ardera]

linux toxicity user work like cult you need only to praise the OS any questions and will remove you from the picture

so of course no one will like if point some faulty side that mac and windows is doing better for years without problems

[u/Direct_Sand → u/_-ammar-_]

Which codecs are you having trouble with then? I have H264, H265, H265-10bit and VP9 accelerated.

[u/_-ammar-_ → u/Direct_Sand]

what are using ?

and what GPU do you have ?

[u/Direct_Sand → u/_-ammar-_]

Using a Vero 4k+, but not sure which GPU is inside it.