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Help using Handbrake to compress blu ray files?
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By Lamp0 · Posted
It was always going to be nothing. -
By Captain_Eric · Posted
Would you please fix your graphics. They are outdated and don't fit the article. -
By hellowalkman · Posted
The Light of Life? We actually do glow till our Death, study finds by Sayan Sen Image by Rafael Rendon via Pexels A study by researchers at the University of Calgary has found that living organisms produce an extremely faint light known as ultraweak photon emission, and that this glow appears to drop significantly after death. The research was published in the Journal of Physical Chemistry in April 2025 and quickly drew widespread attention, leading to more than 200 news stories about the findings. Ultraweak photon emission (or UPE), sometimes called biophoton emission, refers to tiny amounts of light released by living cells as a result of normal biological activity. A photon is the basic particle of light, and researchers say every living system examined so far, including plants and animals, has been found to emit these photons. The glow is far too faint to be seen by the human eye. “I suppose it has a little to do with people being reminded of auras,” says Dr. Christoph Simon, PhD, one of the authors of the study and a professor in the Department of Physics and Astronomy in the Faculty of Science. “It is a fact that living beings glow. It’s a very weak glow, but it’s there and visible with very sensitive cameras.” According to the study, the light involved is extremely weak, ranging from 10 to 1,000 photons per square centimetre per second across a spectral range of 200 to 1,000 nanometres. For comparison, a nanometre is one-billionth of a metre and is commonly used to measure wavelengths of light. Detecting emissions at such low levels requires highly specialized equipment. To study the phenomenon, researchers used electron-multiplying charge-coupled device (EMCCD) and charge-coupled device (CCD) cameras. These imaging systems are designed to detect extremely small amounts of light, including individual photons, while minimizing background noise. The technology allowed researchers to capture signals that would otherwise be impossible to observe. The team worked with the Human Health Therapeutics Research Centre at the National Research Council of Canada (NRC) in Ottawa to examine photon emissions in mice. Researchers took two-hour exposure images of the animals before and after death and compared the results. “We saw that the level of light that they emit – this biophoton glow – is distinctly different between living and dead animals,” says Dr. Daniel Oblak, PhD, an associate professor in Physics and Astronomy and the corresponding author of the study. The images showed a clear decrease in photon emissions after death across the entire body of each mouse. According to the researchers, this provided direct evidence that living and dead tissue produce different levels of ultraweak photon emission. “It’s a very small amount and it’s, of course, very tricky to detect,” Oblak says. The study grew out of discussions between Simon, whose research interests include quantum biology, and Oblak, whose work focuses on detecting light for quantum communication experiments. Quantum biology is a field that explores whether processes described by quantum physics, which studies matter and energy at very small scales, may also play a role in living systems. “Since I work as a quantum physicist on light detection for quantum communication, I thought that experimentally we have a lot of the tools to be able to detect the light,” Oblak explains. The researchers also investigated UPE in plants and found that the light changed in response to stress. When plants were exposed to higher temperatures or physically injured, their photon emissions increased. Chemical treatments also affected the glow. Among the substances tested, the local anesthetic benzocaine produced the strongest emission response when applied to injured plant tissue. These findings suggest that ultraweak photon emission is closely linked to biochemical and metabolic activity inside living organisms. Metabolism refers to the chemical reactions that allow cells and organisms to stay alive and function. Because these reactions change when an organism experiences stress, injury or disease, researchers believe UPE may provide a way to monitor those changes. The researchers stress that the glow is a physical and biological phenomenon, not a metaphysical one. Oblak says more research is needed to understand exactly how the light is produced and what information it may reveal about the condition of living tissue. “We must understand what that is to figure out what’s happening,” he says. “If we can understand how that relates to certain influences on the body – stress, diseases – then that could be used as a diagnostic tool.” The researchers believe the technique could eventually help scientists study health and disease without invasive procedures. Because UPE can be measured without adding dyes, markers or labels, it may offer a way to monitor whether tissue is healthy, damaged or alive. In plants, it could help researchers better understand how organisms respond to injury, heat and other forms of stress. While the work is still in its early stages, the study demonstrates that ultraweak photon emission imaging can provide a non-invasive and label-free way to observe biological activity. Researchers say the approach could become a useful tool for studying vitality, stress responses and other important processes in both animals and plants. Source: University of Calgary, ACS publication This article was generated with some help from AI and reviewed by an editor. Under Section 107 of the Copyright Act 1976, this material is used for the purpose of news reporting. Fair use is a use permitted by copyright statute that might otherwise be infringing. -
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By Copernic · Posted
Rufus 4.15.2393 Beta 2 by Razvan Serea Rufus is a small utility that helps format and create bootable USB flash drives, such as USB keys/pendrives, memory sticks, etc. Despite its small size, Rufus provides everything you need! Oh, and Rufus is fast. For instance it's about twice as fast as UNetbootin, Universal USB Installer or Windows 7 USB download tool, on the creation of a Windows 7 USB installation drive from an ISO (with honorable mention to WiNToBootic for managing to keep up). It is also marginally faster on the creation of Linux bootable USBs from ISOs. A non-exhaustive list of Rufus supported ISOs is available here. It can be especially useful for cases where: you need to create USB installation media from bootable ISOs (Windows, Linux, UEFI, etc.) you need to work on a system that doesn't have an OS installed you need to flash a BIOS or other firmware from DOS you want to run a low-level utility Rufus 4.15.2393 Beta 2 changelog: Add RISC-V 64 support to UEFI:NTFS Improve the guards for using the "silent" option Improve the ability to cancel during write retries Improve progress reporting for compressed image extraction Fix unrestricted XML entity expansion and integer overflow in ezxml parser (courtesy of @esadowski4) [GHSA-55r2-34wg-8mv9] Fix "silent" Windows installation failing at 75% in most cases [#2960] Fix a crash during boot when using UEFI:NTFS on Snapdragon X based ARM64 platforms [#2934] Fix the first WUE option always being checked by default [#2965] Fix an infinite loop when using Windows ISOs that contain multiple WIMs Fix "Enable runtime UEFI media validation" checkbox not always being properly enabled Other WUE improvements/fixes for OneDrive removal and username validation (with thanks to @christian8641) [#2984, #2991] Download: Rufus 4.15 Beta 2 | 1.9 MB (Open Source) Links: Rufus Home Page | Project Page @GitHub | Screenshot Get alerted to all of our Software updates on Twitter at @NeowinSoftware
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Technique
So i've damn near filled my 6TB hard drive and i've still plenty more to do ... that means some videos are going to need compressing (all these files are blu-ray MakeMKV rips).
My computer isn't the fastest at doing this which isn't a major issue because i can just set it up to do the job through the night.
To help advise as best as you can you'll probably need to know what i want to achieve and what i'm going to do with the file. If i miss anything out then just ask...
MY GOAL:
* I want to compress the file down from the original 20GB-40GB that it is. Not to a specific size but smaller without any noticeable loss in image & sound quality.
* I want subtitles to remain in the video file - finally figured out how to do this after some trial & error
* AUDIO - the audio currently comes through my TV speakers. It may well forever stay like that, i don't know. I've been looking in to soundbars for a while now and i hope to get one (but have other issues there - off topic) but it's no certainty. I may well move house in the future and have a 5.1 or a 7.1 setup. The latter two (5.1 & 7.1) are very unlikely but not impossible. The soundbar option is the one that there's actually a good chance of ........ my point is .......... i want to future proof the compressed file so that if i ever do get a soundbar (or indeed 5.1/7.1 setup) I can relax in the knowledge that my movie files can make the most of it rather than being like - damn i wish i'd converted those 300 video files that took me months a little differently.
Problem is ... i don't really understand the audio settings on the audio tab in Handbrake.
* The video files are stored on a specific hard drive on my PC and they are played on my TV in my living room via Plex.
So 3 key things really...
* Image quality - but i think my settings are suitable for my goal? So i'm not particularly worried here. Would just like someone to check.
* Audio quality & future proofing - i honestly don't have a clue.
* Image dimensions (we'll get on to that in a sec)
SUMMARY:
Fairly confident i'm right here. I've selected HQ on the right as a best of both worlds kind of thing - good quality without taking forever and creating a bigger file.
I note the size says 1920x800. More on that on the next screenshot.
DIMENSIONS:
I see the source as 1920x1080 yet the entered numbers by default are less. What is correct here? 1920x1080 or 1920x800?
In this example i actually changed the 800 to 1080 simply based on the reasoning i've heard of 1920x1080 but not 1920x800, that's all.
FILTERS:
I left these as default as i don't really know what they do.
VIDEO:
Now i actually left this as default when i converted my file in this example, however where the red arrow is, i've since read that i should change from Peak Framerate to Constant Framerate.
Correct? Or leave as Peak?
AUDIO:
Here's the problem where i've no clue. I don't really know what to select to achieve my goals. I don't know what codec, what bitrate, what mixdown.
I did a little reading but still don't really understand it. Based on this i changed the mixdown for one of the defaults to 5.1 channels.
Most my movies are English but some are in foreign language (Chinese martial arts movies). So not really sure what to select. I used this as an example since most are total English.
The reason there'll be so many options in that dropdown is because when ripping from MakeMKV i don't know which audio/subs to select as there's often many 'English' options. Based on this i just select them ALL. As a result as you'll know - i sometimes end up with that pointless audio of like the director talking over the movie.
SUBTITLES:
Confident i've got this down now...
So with those options i just mentioned to you (such as changing the image dimensions & not really understanding it) i ended up with this...
ORIGINAL MAKEMKV RIP:
CONVERTED HANDBRAKE FILE with altered 1920x1080 (instead of the default 1920x800):
As you can see, it is a wider file than the original. Leave as 1920x800?
I also noticed though that the audio files are different:
ORIGINAL MAKEMKV RIP:
CONVERTED HANDBRAKE FILE:
Sorry for the long post but wanted to give as much info as possible so that we don't have to play tennis before you're able to advise.
Oh and a final one before i finish. Nothing major but while i'm asking the others i just wondered about this one - on my PC many of the video files have like 'poster thumbnails' for the movie, yet the converted by Handbrake files do not.
Is there a way of changing this so that the converted files have the same thumbnail? If so, how? Like i said, nothing major, just me being picky.
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