I agree that, theoretically speaking, YouTube might be protecting some end users from this type of attack. However, the main reason YouTube re-encodes video is to reduce (their) bandwidth usage. I think it’s very kind towards YouTube to view this as a free service to the general public, when it’s mostly a cost-cutting measure.

Good point, though I believe you have to explicitly enable AV1 in Firefox for it to advertise AV1 support. YouTube on Firefox should fall back to VP9 by default (which is supported by a lot more accelerators), so not being able to decode AV1 shouldn’t be a problem for most Firefox-users (and by extension most lemmy users, I assume).

About the “much higher CPU usage”: I’d recommend checking that hardware decoding is working correctly on your device, as that should ensure that even 4K content barely hits your CPU.

About the “less sharper image”: this depends on your downscaler, but a proper downscaler shouldn’t make higher-resolution content any more blurry than the lower-resolution version. I do believe integer scaling (eg. 4K -> 1080p) is a lot less dependant on having a proper downscaler, so consider bumping the resolution up even further if the video, your internet, and your client allow it.

I believe YouTube always re-encodes the video, so the video will contain (extra) compression artefacts even if you’re watching at the original resolution. However, I also believe YouTube’s exact compression parameters aren’t public, so I don’t believe anyone outside of YouTube itself knows for sure which videos are compressed in which ways.

What I do know is that different content also compresses in different ways, simply because the video can be easier/harder to compress. IIRC, shows like last week tonight (mostly static camera looking at a host) are way easier to compress than higher paced content, which (depending on previously mentioned unknown parameters) could have a large impact on the amount of artefacts. This makes it more difficult to compare different video’s uploaded at their different resolutions.

Unless your initial recordings were lossless (they probably weren’t), recompressing the files with a lossless flag will only increase the size by a lot. Lossless video is HUGE, which is why almost no one actually records/saves it. What you’re probably looking for is visually lossless transcoding, where you do lose some data, but the difference is too small for most people to notice.

My recommendations:

1. Go to your recording software and change the setting to better compress your videos the first time around. Compressing once generally gives a better quality to size ratio than compressing twice. It’s therefore best if your recording software get it right first time, without you having to keep on recompressing your videos.
2. When tinkering with encoding setting, trying to find what works best for you, it might be useful to install Identity to help you compare the original files and one or more transcoded version(s).
3. Don’t try to recompress the audio; you’ll save very little space, and the losses in quality become perceptible much faster than video. When using ffmpeg, the “-c:a copy” flag should simply copy the original audio to the new file, without any change in quality or size
4. I’d recommend taking some time to read through the ffmpeg encoding guides. H265 and AV1 are good for personal archiving, with AV1 providing better compression ratios at the cost of much slower encoding. You could also choose VP9, which is similar in compression ratio and encoding speed to h265.
5. You’ll have to choose between hardware and software encoding. Hardware encoding can (depending on your specific hardware and settings) be 10-100x faster than software, but software generally gives better compression ratios at similar qualities. You should test this difference for yourself and see if the extra time is worth it for the extra quality. Do keep in mind that AV1 hardware encoding is only supported by some of the most recent GPU’s (rx7000 and rtx4000 from the top of my head). If you don’t have one of those GPU’s, you’ll either have to choose software encoding or pick a different codec.

Not to be an unfunny nitpicker (I don’t know why I’m denying this, that kinda the whole point), but all iphones do have lossless audio streaming via AirPlay. I’m assuming that you specifically meant Bluetooth streaming, but then you should’ve said so. Furthermore, normal aptx isn’t high resolution, only aptx HD and aptx adaptive are. The phone does support aptx HD as well, but once again, you could’ve said so from the start (though 3 characters more or less might make a significant difference to most memes, this one certainly wouldn’t have had that problem)

“cis” and “trans” are prefixes denoting on what “side” something is. “cis” means “on this/our side”, while “trans” refers to “the other side”, for example:

1. “Cisalpina” is how the Romans referred to their side of the Alps (modern day Italy), while “Transalpina” referred to land on the other side of the alps.
2. There exist certain pairs of molecules with either a “cis” or “trans” prefix, depending on whether certain identical groups are on the same side or on opposite sides, respectively.

The modern use of “cis” and “trans” is generally about gender. A cisgender person is someone whose gender identity aligns with their sex assigned at birth, while a transgender person is someone for whom that doesn’t hold true.

In this meme, the person on the right is wearing a transgender flag for a shirt, and presumably offending the cisgender person on the left by calling them cis. The meme is making fun of the fact that some cisgender people consider “cis” an insult, when it really only is a neutral and non-offensive description.

I tried using Linux alternatives to iTunes, but it was always a pain. Even iTunes itself on a separate windows box was more of a hassle than I wanted. I eventually discovered rockbox, which works great with my iPod (5th gen AKA video): it has way more config options and allows me to simply create .m3u playlists and use my own folder structure. If your iPod is supported (https://www.rockbox.org/wiki/IpodPort.html), I’d absolutely recommend Rockbox over other solutions.

If your iPod isn’t supported by Rockbox (like my nano 5th gen), you could probably use strawberry or GTKpod. Both are imperfect, but work “good enough”.

Except safari of course (almost 20% market share).

Also, there are plenty of other browsers using Mozilla’s gecko engine. A quote from Wikipedia: “ Other web browsers using Gecko include GNU IceCat, Waterfox, K-Meleon, Lunascape, Portable Firefox, Conkeror, Classilla, TenFourFox.” (https://en.m.wikipedia.org/wiki/Gecko_(software))

I am currently using the proprietary Nvidia driver, simply because nouveau isn’t performant enough. I can’t wait for NVK though, maybe that driver will finally be viable for us Nvidia-users.

It depends on your linker. By default, Firefox appears to use the LLD linker. There is a faster one available, which runs perfectly fine on my 16GB machine: https://github.com/rui314/mold. After installing, it can be enabled by setting —enable-linker=mold instead of —enable-linker=lld