this post was submitted on 12 Jul 2023
103 points (96.4% liked)
Linux
48144 readers
610 users here now
From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
Rules
- Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.
- No misinformation
- No NSFW content
- No hate speech, bigotry, etc
Related Communities
Community icon by Alpár-Etele Méder, licensed under CC BY 3.0
founded 5 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Well, if the file sizes are too big you need to reencode them. That's just how it is, regardless of the software you're using. If your computer is too slow at that, you may want to use faster settings. For example, you could use a codec that's hardware accelerated by your GPU.
I understand that. That's what I was talking about with Handbrake. Problem is, when a single 23 min video file is 5 GiB in size, having Handbrake re-encode that just takes too long.
(I tried doing it and the estimated time remaining around start was something like 3 days worth of having my computer run 12 hours a day without stopping. I want to make the file sizes smaller, not burn out my computer components. Lol.)
Depending on your hardware you should be able to have Handbrake use your GPU to reencode the video much faster than your CPU. If you have Nvidia it would be Nvenc, Intel is Quicksync, and AMD is VCE. If you select one of those as your codec it should go much faster. Check the hardware encoders section on the Handbrake documents https://handbrake.fr/docs/en/1.4.0/technical/video-nvenc.html . Even if you were using windows you would run into the same problem at some point you are limited by how fast your hardware can process the video and no software can make up for that.
As I said to @Octagon9561, I edited my post to include my Handbrake settings and system specs.
Handbrake's speed depends entirely on your settings. For example, in the video tab next to video encoder you can select codecs like H.264, H.265 or AV1. The newer the codec, the more efficient and space saving your result will be but also the more time it will take. You may or may not also see the same codec twice but with NVENC or some other hardware feature next to it. Those will be significantly faster. If you have a choice between multiple hardware acceleration options, I'd recommend picking Nvidia > Intel > AMD for the best results. If none appear, you could buy a newer graphics card that support those features if budget allows. Other than that, something else that also significant affects how fast Handbrake will be is the preset option in encoder option (also in the video tab). You can select everything from placebo to slow to fast to ultrafast. The slower the higher the quality but also the slower it will be. Faster presets will be faster but will offer lower quality.
I edited my post to include my Handbrake settings and system specs.
What settings are you using and what CPU?
I used to transcode blu-ray movies with handbrake in H.264 using an i7-950 and it only took a few hours for a 2 hour movie.
Try using the x.264 encoder in handbrake set to constant quality mode. Set the CRF to around 20-22 and use the fast preset.
The slower presets significantly increase the encode time with only a small decrease in file size.
Keep in mind that the RF values will be completely different if you use other encoders like H.265 or even H.264 with a hardware acceleration encoder. For 1080p, 20-22 is indeed appropriate but lower res like 480p will require a lower RF like 16-18 for the same quality. Meanwhile 4K will be fine with 24. Again, assuming you use the x264 encoder which is not hardware accelerated. For best results, I'd really recommend playing around with the settings and see what works best for you.
Computers are designed to run 24/7 so as long as you have proper cooling your PC will be fine. It would be good to post your specs too.
@[email protected] and @[email protected] : I edited my post to include my Handbrake settings and system specs.