#ffmpeg on 2024-05-19 — irc logs at libera.irclog.whitequark.org

2024-04-11 19:01 BtbN changed the topic of #ffmpeg to: Welcome to the FFmpeg USER support channel | Development channel: #ffmpeg-devel | Bug reports: https://ffmpeg.org/bugreports.html | Wiki: https://trac.ffmpeg.org/ | This channel is publically logged | FFmpeg 7.0 is released

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00:25 <znf> libplacebo is a vulkan-only filter, correct?

00:27 <znf> actually, can always use llvmpipe I guess

00:33 <znf> Would tonemapping with libplacebo and llvmpipe somehow result into a much higher CPU usage than the tonemap filter?

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00:41 <another|> placebo also does opengl afaik

00:42 <znf> Hm

00:42 <znf> Can this be used on Windows?

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00:47 <another|> i think it also implements stuff in directx, so yes?

00:51 <znf> not sure how to specify a device on windows

00:56 <znf> uhm, crap, think I crashed my gpu

00:57 <znf> 6716 root 20 0 0 0 0 R 100.0 0.0 1:39.73 nv_queue

00:59 <znf> rip, rebooting lol

01:07 <BtbN> Vulkan sadly isn't the most stable thing :/

01:07 <BtbN> llvmpipe would at least prevent that though :D

01:10 <znf> well, I was getting 0.5x with llvmpipe

01:10 <znf> 0.9x with nvidia, was worth a try :D

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05:47 <hendry> trying to run ffprobe on a mp4 generated by my Sony camera and I'm suprised it doesn't work ! https://gist.github.com/kaihendry/86c341a70507c19b1fe1b0275d8f092b

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08:17 <Cracki> press the record button, press it again a second later

08:18 <Cracki> then you have a little file that's good for others to work on a patch

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11:11 <noobaroo> Since I switched to Kubuntu, QSV doesn't work. It says this: https://bpa.st/raw/TA7A VAAPI works fine though

11:11 <noobaroo> What could be the problem?

11:14 <Cracki> different package, different maintainer, different compilation flags?

11:15 <noobaroo> Where at?

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11:21 <Cracki> you switched, what did that involve, a complete reinstall, right?

11:21 <Cracki> so a lot of things could have changed, along with the major release and whatever release tracks they have

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12:25 <noobaroo> Whats the difference between -vf format=p010 and pix_fmt yuv420p10le ?

12:33 <BtbN> The layout of the pixels in memory

12:33 <BtbN> which basically describes the difference between all pixel formats for the same kind

12:33 <BtbN> P010 is 10bit NV12

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12:38 <noobaroo> I know

12:39 <noobaroo> What's the difference between `-vf format=p010` and `-pix_fmt yuv420p10le`

12:44 <BtbN> That's impossible to answer without context.

12:44 <BtbN> Beyond stating the obvious

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14:28 <noobaroo> BtbN What is so obvious? They both become the same product, which ffprobe reads as yuv420p10le and mpv reads as p010

14:29 <BtbN> Well, the obvious part is "one sets the -pix_fmt option, the other sets up the video filter with p010 as first option."

14:29 <BtbN> But specially the -pix_fmt option can do multiple things depending on context

14:30 <BtbN> In the most simple case it'll also just result in a format filter being inserted

14:32 <noobaroo> So in the most simple case they are exactly the same?

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22:29 <LimeOn> Hello, is it possible to do screen-recoding in wayland with ffmpeg?

22:30 <LimeOn> I am trying to use ffmpeg to screen recording and also set the screen area as i do in X11. I would also like to know if its possible to use something as 'slurp' to take the screen region in Wayland and use it in ffmpeg as its possible in x11: 'ffmpeg -framerate 25 -f x11grab -select_region 1 -i :0.0' (something as this)

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22:58 <LimeOn> solved with another tool

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