DaGeek247
DaGeek247 of https://dageek247.com/
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Joined 1Y ago
Cake day: Jun 12, 2023
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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](https://mango.blender.org/download/) 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](https://imgsli.com/), [FFMetrics](https://github.com/fifonik/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](https://imgsli.com/MjI5ODk4)|
|21 | 352,337 |390,358 – [x265 visually lossless](https://imgsli.com/MjI5OTAw)| 411,439 |
|24 |301,517 – [av1 VAMF visually lossless](https://imgsli.com/MjI5ODg4)| 250,426 | 263,524 – [x264 good enough](https://imgsli.com/MjI5ODk5) |
|27 | 245,685 | 165,079 – [x265 good enough](https://imgsli.com/MjI5OTAx) | 176,919 |
|30 | 205,008 | 110,062 | 122,458 |
|33 | 168,192 | 73,528 | 86,899 |
|36 | 139,379 – [av1 My visually lossless](https://imgsli.com/MjI5ODg0) | 48,516 | 63,214 |
|39 | 116,096 | 31,670 | 47,161 |
|42 | 97,365 – [av1 my good enough](https://imgsli.com/MjI5ODg1) | 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](https://imgsli.com/MjI5ODk1).
I go into more detail with the hows and whys of my choices, in my [journal-style blog post](https://dageek247.com/wordpress/uncategorized/my-attempts-at-comparing-compression-between-ffmpegs-x264-x265-and-av1-encoders/), 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.
Is it $60 or less? Everytime one of these alternative boards with an assload of more features pops up, nobody bothers to mention the price. Obviously we could spend more money to get more features, that’s what spending more money does. You can’t replace something without actually offering an alternative. The pi’s biggest selling point was that it was cheaper than a steak dinner. If you dont match or beat that, you aren’t actually competing with the pi.
There are also connectors that let the cable through the holes in the end, completely removing the need to try and get the strip length exactly right. It’s worth looking into if you have to do this more than a once or twice. As a quick example; https://www.amazon.com/Klein-Tools-80024-Racheting-Installation/dp/B09FWH5RFF/
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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.
If you’re really worried about power use, you could switch to an itx motherboard with an soc laptop chip in it.