DaGeek247

joined 1 year ago
[–] [email protected] 1 points 9 months ago

Innovative ideas are rarely smart ideas.

[–] [email protected] 2 points 9 months ago (2 children)

You completely missed the point there, damn. He's saying those things are very likely to be bad investments.

[–] [email protected] 3 points 9 months ago (1 children)
[–] [email protected] 5 points 9 months ago (2 children)

If you're really worried about power use, you could switch to an itx motherboard with an soc laptop chip in it.

[–] [email protected] 17 points 9 months ago

He probably killed himself because

Using someones suicide to preach about your own personal cause is a dick move.

[–] [email protected] 7 points 10 months ago* (last edited 10 months ago)

Visually lossless means I couldn't tell an image difference even when pixel peeping with imgsli. Good enough means I couldn't tell a difference in video, but could occasionally see a compression artifact in imgsli.

The VMAF results are purely objective measurements. You can read more about it here; https://en.wikipedia.org/wiki/Video_Multimethod_Assessment_Fusion

[–] [email protected] 3 points 10 months ago (3 children)

I consider the 'good enough' level to be, if I didn't pixel peep, I couldn't tell the difference. The visually lossless levels were the first crf levels where I couldn't tell a quality difference even when pixel peeping with imgsli. I also included VAMF results, which say that the quality loss levels are all the same at a pixel level.

I know that av1, x264, and x265 all have different ways of compressing video. Obviously, the whole point of this was to get a better idea of what that actually looked like. Everything on the visually lossless section is completely indistinguishable to my eyes, and everything on the good enough section has very minor bits of compression only noticed when i'm looking for it in a still image. This does not require the same codec to compare and contrast with.

Frankly, for anything other than real-time encoding, I don't actually consider encoding time to be a huge deal. None of my encodes were slower than 3fps on my 5800x3d, which is plenty for running on my media server as overnight job. For real-time encoding, I would just grab a Intel Arc card, and redo the whole thing since the bitrates will be different anyways.

[–] [email protected] 1 points 10 months ago (7 children)

From my blogpost, i'm using the following command to encode the video;

ffmpeg -i source.2160p.mkv
-map 0:v:0
-map -0:a -map -0:s -map_metadata -1
-c:v libsvtav1
-preset 3
-vf scale=w=1920:-2
-crf 23
dest.1080p.av1.mkv

[–] [email protected] 6 points 10 months ago (1 children)

Sure, but that is a choice that couldn't be made without first checking how much space is saved by switching codecs. This helps with making that decision, but i'm well aware it is only part of the information needed.

[–] [email protected] 7 points 10 months ago

Stolen. Thank you.

[–] [email protected] 3 points 10 months ago (5 children)

I did try to format the table here better. I used code blocks the first time, and it ended up being even uglier. After about four edit attempts i kinda just gave up. Tables don't seem to exist as far as I can tell either.

Your experience with x264 just about matches up with mine. As long as I don't pixel peep, crf 24 does a pretty great job of conveying the information. It also does a pretty great job of working with just about everything compatibility-wise. I don't expect it to go away any time soon specifically because of that.

AV1 is super neat in that we can buy hardware accelerated encoding for it for really cheap using the Intel Arc video cards, and can be decoded by their latest CPU generation. It makes for a great choice for something like security camera footage where playback compatibility is good enough (you can play it in a modern pc), hardware encoding works with a 200$ card, and you save a lot of money using the video card instead of buying extra storage space.

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submitted 10 months ago* (last edited 10 months ago) by [email protected] to c/[email protected]
 

I recently got it into my head to compare the various popular video codecs in an effort to better understand how av1 works and looks compared to x264 and x265. I also had ideas of using a intel video card to compress a home video security setup, and what levels of compression I would need to get good results.

The Setup
I used the 4k 6.3gb blender project, tears of steel as a source. I downscaled the video to 1080p using all three codecs, and then attempted to compare the results using various crf levels.

To compare results I used imgsli, FFMetrics, and my own picture viewer to try and see what the differences are.

The Results

crf av1 KB x265 KB x264 KB
18 419,261 632,079 685,217 – x246 visually lossless
21 352,337 390,358 – x265 visually lossless 411,439
24 301,517 – av1 VAMF visually lossless 250,426 263,524 – x264 good enough
27 245,685 165,079 – x265 good enough 176,919
30 205,008 110,062 122,458
33 168,192 73,528 86,899
36 139,379 – av1 My visually lossless 48,516 63,214
39 116,096 31,670 47,161
42 97,365 – av1 my good enough 20,636 35,801
45 81,805 13,598 27,484
48 69,044 9,726 20,823
51 58,316 8,586 – worst possible 16,120 – worst possible
54 48,681 - -
57 39,113 - -
60 29,062 - -
63 16,533 – worst possible - -

Here is av1 rcf 36 vs crf 24.

I go into more detail with the hows and whys of my choices, in my journal-style blog post, as well as how i came to these conclusions, But in essence, if you want to lose practically no visual information, crf24 through 36 for av1, crf 21 for x265, and crf 18 for x264 will do the job.

If you are low on space, using my 'good enough' choices will get you practically the same visual results while using less space, depending on the codec.

[–] [email protected] 7 points 11 months ago (1 children)

Don’t bother transcoding 4k

i have a cheap 1650 that can do four 4k transcodes on the fly with no issue. It was a 100$ upgrade. Frankly, this is a bad take. Obviously every situation is different, but unless you have a family of twenty that you're sharing your server with, 4k encoding is incredibly easy to do these days.

 

Hey y'all, I've been using my.freenom as my domain registrar for the past six years without too many issues. I've kept it mainly because it has been cheap as balls. However, I am now looking for a registrar that supports dynamic dns and would love to hear your suggestions. The first results that pop up are google and godaddy which are not what I'm looking for. (I actually had issues with godaddy stealing domain names all the way back in 2010, but that's another story) A local community reference is worth a lot more to me than a top search result.

The plan is to set up my domain to point to my local IP for stuff like valheim servers so i don't have to share an IP every time we want to play. My friendlywrt router supports dynamic dns out of the box, so that's what I'm looking to use for my domain.

Also, it needs to support subdomains going to different places. Complete access to the dns records is enough, but I would love a more user friendly interface for adding things like a separate email host, a webhost address, plus a subdomain for the valheim server.

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