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Cake day: June 14th, 2023

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  • I guess what it comes down to is there a plenty of things, big and small, that I don’t have an issue with as an American but I know matter to the other person. Usually it’s small stuff (how people comport themselves in relation to work, the line between direct and rude, etc) , but when it comes to things where people died, I think it’s best to defer to the people involved.

    Maybe that’s a trap of my upbringing as well but I don’t see that as American lens, I see that as recognizing there are a lot of lenses.

    And again, the original joke is decent, its a role reversal and punches up not down, but I wouldn’t want an American paper making jokes about Finnish biathalon Olympians spanking the Russians.

    Any joke with cultural baggage carries the risk you miss context. Again, I don’t think that’s just true for Americans.




  • lol, just made the top level comment to say thank you. You nailed it! I may fool around with Tdarr to optimize my library. I’m working on my backup setup, so I’ll use Tdarr on a limited duplicate, but will also keep a full original. I’ve been slowly saving and getting hardware for two fully redundant systems on fiber. Overkill for plex, but I’ve been working to start archiving different family media, and don’t want to become family historian without offsite backups. I’m almost there and there should be enough space to “test drive” the conversion of the plex library without screwing anything up.




  • Thank you for the walkthrough! I was loosely familiar with how transcoding worked, but wasn’t sure if this specific library (tdarr) was coded in a way it became a “default” tool to replace plexs transcoding. My background is in small embedded systems for the most part, and I’ve gotten burned by tools which by default set themselves up to be the, well, default. I’m just used to dealing with much smaller pipelines/stacks.

    Based on another response it looks like the issue may actually be around some HDR formatting. I could see that as after I transferred the new machine was using a completely different hardware set, including GPU.

    Thanks to you and everyone for walking be through a new tool! If it is an HDR format issue, I imagine I may be able to use Tdarr to address it.


  • batmaniam@lemmy.worldOPtoPlex@lemmy.mlHow to screen a 20TB library for corrupted files?
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    3 months ago

    I certainly am not sure lol. I did try disabling the HDR tone mapping to no affect. It’s possible this is the issue as when I transferred the library, it was to new hardware with a different GPU.

    Is there a way to tell the color format from the file info?

    Thank you!

    Edit: I wanted to add context, as I think this may be the culprit. I initially transferred the files from one machine to another via filezilla. About a week after, we had a power outage, which screwed up the SSD that had the operating system (lesson learned about surge protectors). To get the Plex back and running quickly, I simply pulled the physical hard-drive, and popped it into a 3rd machine. So it does make sense to me that the file itself may be fine.

    edit2: @bazsy@lemmy.world you are definitely onto it! I just downloaded the file to another machine, and it played with no color issues. So my guess is it’s something to do with the GPU on the machine hosting plex?


  • Thanks for explaining, but I still want to make sure I understand the purpose of Tdarr. One thing I’ve noticed about tools like this is the documentation usually gets right into the “how” and skips over the “what and why”. So Tdarr transcodes a library with intention of a new, permanent output library? Is that correct? I’m used to transcoding in the context Plex does it: On the fly to serve to a client, and temporary.

    If my understanding is correct then maybe it’ll help address issues, but still an awesome tool to help optimize my library.

    Thanks for taking the time. Most of my coding background is mostly from monitoring and control, so I’m still learning a lot about the nuts and bolts of the whole stack that makes stuff like plex work.


  • I actually do have the torrent, files for a lot of them, but I’ve moved folders and I’m not really clear how that might affect things.

    By my guess it’s probably about 10% of the library that’s corrupted, so re-downloading them wouldn’t be the worst (I’ve already been doing it piece wise as they come up).

    While I’m not great with system level and IT stuff, I’m OK with coding. I’m debating writing a python script to get the average color of each video file, I’d bet there’s some libraries out there to help with that.




    1. Yes: you absolutely want the outdoor rated PVC if you’re getting sun exposure. You can cheat, it’s not like the white stuff will be immediately destroyed, but if you want something that will last a bunch of seasons, the “grey” stuff is the way to go. Double check that it’s UV rated though, and doesn’t just happen to be grey.

    2. To get around all of that, you can bury it. Because you’re just doing it for the garden, you don’t need to dig down to the frost line. Just make sure you clear the line at the end of the season. Another advantage is that you’ll minimize the amount of water that’s been baking in the sun idle in the pipes. If it’s a heatwave and they’re in direct sun, that water can get downright hot to the touch. I’ve never lost a plant because of it but frankly I’m kind of surprised by that. If you do bury, you might consider running some electrical conduit at the same time, even if you don’t put wires in it (DO however include a pull cable for later use). What you do at either end of that is a whole other project, but you can always just cap it and get it to it when you get to it. Solar + Battery usual works great for garden automation stuff, but being able to run an ethernet cable can simplify a lot.

    3. Plastic will hold up fine, but as others have mentioned you might want one of these.. The union allows to remove it. You could do a more simple threaded system IF you are able to completely and freely rotate everything “down stream” of the valve. I’m just going to say the stupid part out loud because I learned pipe stuff the hard way: A ball valve threaded on both sides cannot be loosened from one side without tightening the other (again, unless that other side can freely rotate). Edit: alternatively unions are sold separately, and sometimes you can eek out some flow advantages that way but it’s in no way worth thinking about at garden water flow rates.

    4. Finally, a last alternative I’ve seen done well for gardens that sort of “wrong done right” is putting posts up and stringing a hose over head. It kind of seemed like as much work/expense as burying it, but I guess they had the posts, it came out really sharp in the end. You need a pretty high quality hose though. Baking in the sun and sagging under the water weight can end badly.



  • I agree with the “no” assessment, but also need to drop the bit of trivia that sharks are really sensitive to electricity. There was a guy making a shark detterent belt that you hit a button and it gave a small zap. Guy would cover himself in food, have the shark barreling right at him, hit the button and it does a 180.

    That being said, it probably was really low current but high voltage (like a static shock), I don’t know if sharks care about a low voltage battery stack.

    (bonus fun fact: that sensitivity is why hammerhead are the way they are. With those sensors further apart you get more spatial resolution, like a radar array. It’s also why they wag there head over the floor; they’re sweeping for electrical signals of their prey)


  • I’m just going to give a quick overview of what wastewater treatment is and does.

    The basic idea is that you can have something like a can of 7-up, it looks clean, but would kill a fish dead. It’s got loads of dissolved sugar, and if you dumped it into a river, microbes would go nots on the sugar, sucking out all the oxygen as they grew, and causing a boatload of other problems.

    But you can’t filter dissolved sugar. I mean you can but it requires a highly specialized filter that would imeaditley foul is wastewater. And we’re not just talking dissolved sugar, there’s a whole range of everything in there.

    So we do something very simple: we let the 7up grow moldy. 7 up would go through a coffee filter, but mold wouldnt. We let the mold suck up the sugar, then seperate that.

    In reality it’s a bit different but that’s the idea. We grow a ton of microbes, let them suck everything out, then move them to another tank where they all stick together and settle to the bottom. The result is that the liquid at the top of the tank is clear, and free of anything dissolved as the bugs ate it all. (how we then get rid of all of that bug mass is whole other thing but basically we squeeze all the water out we can and it becomes dirt).

    The problem with stuff like pfoas or any other micropollutant is that the bugs aren’t that interested. And they’re at such a low concentration it’s incredibly hard to get such a small amount out of millions of gallons every day.

    Wastewater treatment was meant to mimic natural ecology so that when it was discharged we didn’t overwhelm the environment. If you poop in the woods, it’s probably not a problem. If everyone poops in the same area of the woods… The woods are going to look different and not in a good way. We solved that problem, but not the one of what to do when the poop is “radioactive”.

    One last note: what I described above is secondary settling (letting the bugs settle and taking the liquid off the top). There ARE filters to seperate the bugs from the liquid, but they are no where near selective enough for specific compounds. Again, think coffee strainer.



  • No, people swear by this, honestly. It’s not like asking someone for a “left handed smoke shifter” as an initiation right. People rural and metro genuinely think this is a real thing. At a few hundred a pop I would wager there’s ~$50k in these things that will be purches by various contractors out of the new infrastructure build in the US. It’s wild.