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Comment Re: Legal/illegal bikes (Score 1) 146

Class 1 and 2 e-bikes limit assist to 20 mph, not 15. You can ride them faster than that, but you have to provide the power. 20 mph is well above what most recreational cyclists can maintain on a flat course, so if these classes arenâ(TM)t fast enough to be safe, neither is a regular bike. The performance is well within what is possible for a fit cyclist for short times , so their performance envelope is suitable for sharing bike and mixed use infrastructure like rail trails.

Class 3 bikes can assist riders to 28 mph. This is elite rider territory. There is no regulatory requirement ti equip the bike to handle those speeds safely, eg hydraulic brakes with adequate size rotors. E-bikes in this class are far more likely to pose injury risks to others. I think it makes a lot of sense to treat them as mopeds, requiring a drivers license for example.

Comment Re: Legal/illegal bikes (Score 1) 146

The menace in London are people who drive Chelsea tractors. Oversized vehicles whose owners think theyâ(TM)re too good for the TfL. We need to take a leaf out of Paris' book and increase the charges for congestion and emissions, especially in zones 1 and 2, and perhaps even 3 (letâ(TM)s say everything inside and including the north and south circulars.). Cycling is the only sane way to get around this area. Driving isnâ(TM)t an activity that scales and weâ(TM)ve sacrificed enough on that experiment.

Comment Re: Legal/illegal bikes (Score 1) 146

Would treating them as mopeds be so bad?

What weâ(TM)re looking at is exactly what happened when gasoline cars started to become popular and created problems with deaths, injuries, and property damage. The answer to managing those problems and providing accountability was to make the vehicles display registration plates, require licensing of drivers, and enforcing minimum safety standards on cars. Iâ(TM)m not necessarily suggesting all these things should be done to e-bikes, but I donâ(TM)t see why they shouldnâ(TM)t be on the table.

I am a lifelong cyclist , over fifty years now, and in general I welcome e-bikes getting more people into light two wheel vehicles. But I see serious danger to both e-bike riders and the people around them. There are regulatory classes which limit the performance envelope of the vehicle, but class 3, allowing assist up to 28 mph, is far too powerful for a novice cyclist. Only the most athletic cyclists, like professional tour racers, can sustain speeds like that, but they have advanced bike handling skills and theyâ(TM)re doing it on bikes that weigh 1/5 of what complete novice novice e-bike riders are on. Plus the pros are on the best bikes money can buy. If you pay $1500 for an e-bike, youâ(TM)re getting about $1200 of battery and motor bolted onto $300 of bike.

Whatâ(TM)s worse, many e-bikes which have e-bike class stickers can be configured to ignore class performance restrictions, and you can have someone with no bike handling skills riding what in effect is an electric motorcycle with terrible brakes.

E-bike classification notwithstanding, thereâ(TM)s a continuum from electrified bicycles with performance roughly what is achievable by a casi recreational rider on one end, running all the way up to electric motorcycles. If there were only such a thing as a class 1 e-bike thereâ(TM)d be little need to build a regulatory system with registration and operator licensing. But you canâ(TM)t tell by glancing at a two wheel electric vehicle exactly where on the bike to motorcycle spectrum it falls; that depends on the motor specification and software settings. So as these things become more popular, I donâ(TM)t see any alternative to having a registration and inspection system for all of them, with regulatory categories and restrictions based on the weight and hardware performance limitations of the vehicle. Otherwise youâ(TM)ll have more of the worst case weâ(TM)re already seeing: preteen kids riding what are essentially electric motorcycles that weigh as much as they do because the parents think those things are âoebikesâ and therefore appropriate toys.

Comment Re:Question (Score 1) 78

They've done this with every meaningful cultural and corporate heritage item in our world. It's disgusting.

You don't honor the heritage of a people by removing all symbolic representations of that culture from public life. The Spartans and Centurions were millennia ago but still have strong, important cultural imagery for today: the same is true of the Apache. The apache were known for being mobile and adaptable, which arguably is something very true of the Apache foundation.

Removing these imageries results in a symbolically empty, culturally irreverent pastiche. Who was it that said, “Those who cannot remember the past are condemned to repeat it.”?

This is no different than the wanton destruction of ancient sculptures and art by ignorant tribesmen because it offends their sensibilities.

Comment Re:MKV. Of course. (Score 1) 48

Davinci Resolve is wierd, it still can't do AAC on Linux. The last post in this thread was July this year: https://forum.blackmagicdesign...

It's free or cheap because Black Magic are a hardware company. They're not interested in feature parity on all platforms. In fact they're not interested in any codecs and formats that cost them money, hence MainConcept's plugins.

Comment Re: MKV. Of course. (Score 1) 48

If what you said were true, online video services would use MKV, they can't afford to waste so much moneyÂon a streams that are 140% bigger. But that's not true is it? HLS and MPEG-DASH and CMAF are all based on MP4/base ISO media format (fragmented MP4 to be precise). It wouldn't be in their commercial interests to use such an inefficient format.

Comment Re: MKV. Of course. (Score 1) 48

I never said it was a codec. It is a file format that offers better compression. That's why a 1920 x 1080 video in an .mkv container is smaller that the same video in .mp4 format

That's simply not true. MP4 and MKV are containers with low overload, unlike MPEG-2 TS where the container overhead can add up to 8-10%, especially for low bitrate audio and video.

Containers have nothing to with how much video is compressed. While MKV can have compressed headers, this makes little difference unless you're dealing with video that is either low resolution or was compressed so much that it has a very poor quality. MP4 does not have 700MB of overhead compared with MKV, and if you're finding that the file sizes are that different, it means the video has been compressed significantly more in the MKV by the video encoder, not the muxer (multiplexer). Or maybe one has used a different codec, such AV1 vs. AVC. Demux your streams and then see what the size of the elemental video streams are if you want proof.

Yes, I work at a codec company. And no, I haven't seen MKV for years, it's a format popular with certain online communities like the DivX crowd or pirates (often the same people).

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