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.
this post was submitted on 12 Jul 2023
81 points (96.6% liked)
Linux
47369 readers
973 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
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.
@Octagon9561@lemmy.ml and @NoDignity@lemmy.world : I edited my post to include my Handbrake settings and system specs.
qBittorrent /s
Please excuse me if I'm misunderstanding, but I fail to see the joke here...
I was jokingly suggesting just pirating the content instead
Ah. Fair enough. I do dabble in the seaworthy arts from time to time, but I figured I already have it on Blu-ray so why do that? Lol.
Depending on your location and internet speed, you might be better off dabbling.
Some places let you own a backup copy legally, and if you've got decent internet, it might even be faster than ripping and converting it yourself.
I appreciate the advice (really, I do :) ), but I think I got it, thanks to a lot of the advice the others have given me regarding Handbrake and the like. :)
This. I can get a 15ish GB 4k movie torrented faster than I could rip and transcode it.
In Minecraft of course
This. I can get a 15ish GB 4k movie torrented faster than I could rip and transcode it.
In Minecraft of course
I was jokingly suggesting just pirating the content instead
You can link the makeMKV libs to handbrake so it's a one step process disk -> compressed form.
#!/bin/bash
# Intention: replace aacs decoding with makemkv's superior libmmbd programatically
# elevate privilages to sudo
[ "$UID" -eq 0 ] || exec sudo bash "$0" "$@"
# test if libmmbd is installed already, exit otherwise
libmmbdpath=$(find /usr -name libmmbd.so.0)
echo "libmmbd path is $libmmbdpath"
if [[ ! $libmmbdpath == *"/lib/"* ]]; then
echo "libmmbd not found, please install makemkv first"
exit 0
fi
# test if libaacs is installed already, set desired path otherwise
libaacspath=$(find /usr -name libaacs.so.0)
echo "libaacs path is $libaacspath"
if [[ ! $libaacspath == *"/lib/"* ]]; then
libaacspath="/usr/lib/libaacs.so.0"
else
echo "libaacs found, you must uninstall libaacs"
exit 0
fi
# test if libbdplus is installed already, set desired path otherwise
libbdpluspath=$(find /usr -name libbdplus.so.0)
echo "libbdplus path is $libbdpluspath"
if [[ ! $libbdpluspath == *"/lib/"* ]]; then
libbdpluspath="/usr/lib/libbdplus.so.0"
else
echo "libbdplus found, you must uninstall libbdplus"
exit 0
fi
# if we made it here, it's time to take action
# softlink mmbd to aacs
ln -s $libmmbdpath $libaacspath
# softlink mmbd to bdplus
ln -s $libmmbdpath $libbdpluspath
echo "successfully set up libmmbd as the system decrypter"
exit 0
Bro answers with a complete bash script just for this dude's conveniance! Hats off to you sir!
This is the kind of community atmosphere I’m here for <3
Is there some legal reason why AACS and BDPlus can't use the same decoding strategies as MMBD?
I apologize. As grateful as I am that you took the time to write all this out, I must admit I am still very much a Linux noob and so all this is way beyond my abilities. :/
Edit 1: A number of people have said that knowing my Handbrake encoding settings and my hardware specifications. So, here they are:
Handbrake encoding settings:
Hardware specs:
- CPU: Intel Core i7 10700K @ 3.80 GHz
- RAM: 32 GiB Dual-channel DDR4 @ 1066 MHz
- GPU: Nvidia GeForce RTX 2060
Edit 2: My goal is to add the TV shows / movies in my Blu-ray collection to my NAS server, for use with services such as Jellyfin, Emby, Plex, etc.
There are multiple VERY inadvisable things you're doing here. Darkcalling has good points, but in addition:
You are using a CRF of 0, which will create an insanely huge result video size for no perceptual benefit. There is no reason to do this. You may as well just use makemkv to create mkv files directly and use those. The underlying video encoding is AVC in both cases, just placed into differing containers. This is kind of a misuse of Handbrake. You use handbrake to reencode videos either from one encoding to another, or for satisfactory file size reductions from source materials.
You are also using an encode speed preset of placebo, which if you have ever done a comparison you will find offers basically exceedingly minimal file size reduction advantages over slow or very slow, but for a MUCH longer encode time.
I recommend trying to encode samples of quality RF 20-24 and determine which looks best to you (if they end up looking very different). Lower numbers are higher picture quality. I recommend an encode speed of as slow as you can bear, but not slower than Very Slow. I recommend the Encoder Profile being set to High (from Main). Basically the spec for h264 has changed slightly and while Main is super compatible, High has some potential for file savings/quality improvements and is compatible with basically any player since... God knows when, maybe 15 years ago?
One thing I don't recommend is using nvenc, the gpu encoder, for non real time contexts. x264, the software renderer, will produce higher quality results. Higher quality means either the videos will look the same but the size will be smaller, or the sizes will be the same but the picture looks better.
Also, even though you don't have it set, I also do not recommend the Fast Decode checkbox. Maybe useful for a device from the year 2002, but at the cost of a noticeably larger file size.
Finally, you should state what your actual goal is. Yes you are ripping your blu rays, but what are you trying to really achieve with this? Further advice can be dispensed with that info.
load more comments
(1 replies)
Reencoding video will always put a lot of strain on your computer, regardless if it's Handbrake or some other tool doing the conversion. With that said, it also depends a lot on the settings you use to transcode.
Can you share what video settings you tried in Handbrake?
Yup, edited my post. Thanks. :)
Ok, so two things stand out.
First, you're using placebo as your encoder preset. This is slow, stupidly slow.
Searching for some comparisons between the different presets that show how slow it is was more difficult than expected, most people don't even test this setting. Found one comparison here anyways luckily. The first graph (red line) shows how many fps/second were achieved on average. The fastest preset they tested, veryfast, is 68 times faster than placebo.
For reasonable values I'd use medium or slow, which are still 20 times or 10 times faster with minuscule quality differences. Also see the FFMPEG FAQ on why placebo is stupid.
Now for the second thing. I get why you put 0 as CRF, but that's not a good idea. You'll most likely have a bigger file in the end than what you started with.
The bluray itself does not contain enough details to actually need such a low CRF. 17 or 18 is visually lossless, as in you won't be able to tell the difference with your eyes. For my encodes I use 20 most of the time, as it still more than good enough. Reasonable values, if you want a smaller file size are up to ~28.
TLDR: use slow with CRF 20 as a starting point.
I hope some of this made sense to you and sorry if it comes over as too agressive.
Still, hope this helps you get what you want.
Edit: One more thing I thought about. You can use the hardware encoder in your GPU if you want. However, that will come with worse quality and bigger files than encoding on the CPU. Still something you might want to look at just to compare.
I...uh...feel like a dumbass now. I didn't know a lot of this. When I first started using Handbrake, a lot of articles I read suggested to use Placebo / CRF 20 if I wanted no loss in quality. I also do this when I rip DVDs and the file sizes and everything have always been perfectly reasonable. Though I suppose maybe that was because DVDs are 480p max typically and those naturally have much smaller file sizes than Blu-rays hold.
I just don't want a loss in quality, that's all. :(
Also,
TLDR: use slow with CRF 20 as a starting point.
Thanks. You didn't come across as agressive to me. :) I appreciate the information. I'm no noob as I've been ripping DVDs for years using Handbrake but I am very much a beginner when it comes to ripping Blu-rays, which seem to be a slightly different beast than the former, so I'm glad that everyone is so willing to share tips. :)
You can save money with mkvtoolnix and use hardware encoder with ffmpeg to speedup conversion.
I've ripped the entire 10 seasons of the show "friends" using makeMKV. Just make sure you give it a couple of trial and error runs so you can understand what you're getting. Some blurays have many options that you may or may not need.
qBittorrent /s
view more: next ›