Video Compression as Fast As Possible
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- เผยแพร่เมื่อ 22 ก.ค. 2024
- Without video compression mediums like TH-cam wouldn't exist. Taran explains how it works!
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I actually really like Taran as a host. He's super informative and the way he explains it makes it obvious that he knows everything he's talking about, and is just making it nice and simple for us. Great video!
He's already quit from LMG few weeks ago
@@CC-se4ci D: well atleast this comment had to wait 8 years before getting this news.
I actually really loved that you guys included actual examples of what some of the compression errors look like. Having seen those kinds of artifacts/errors in the past I now understand them a hell of a lot better than I did before, great job guys!
wow that is really fast internet, It takes me about an hour and a half to download a 2.5 GB file
We feel sorry for you.
:O That's actually really slow.
I'd be lucky to download that in 5 hours..
Takes me about 3 and half minutes if the server can upload +11MB/s
Takes me about 3 and half minutes if the server can upload +11MB/s
Crazy what was considered fast internet 8 years ago
Taran, your on screen presence is really improving, and you feel so natural in front of the camera. I like your attitude and the energy you bring to these videos. Keep up the good work!
Awesome. Being an animator, this really does bridge the gap. Thanks for the clear explanation of the P,B and I frames.
Fantabulously explained my good man.
What the... how are you even here? 😂
good video,
Give this man a burger.
ummmmmm... right... [runs away]
2.5 gb in 5 mins, it takes me like 2 hours
me too!
you have to upgrade to your internet premium(most expensive one ) pack
Takes me like 16 hours
Takes me 3 mins
lol I live in the middle of nowhere in northern Ontario, Canada, ... we aren't exactly known for our high internet speeds in my area. but I can still maanage a 2.5 gb download in about 7-10 minutes. so I don't know who you get your internet from but it sound like you need a change
Having Taran in these Tech Quickie episodes is actually pretty good. He's getting better, and I have to say his slower pace of delivering information (compare to Linus) is pretty good, considering the huge amount of information involved. Keep up the good work, team!
You are getting much better at doing these videos! Great job, Taran!
I enjoy Tarans coolness and ease at explaining. Great video
Linus should learn from Taran's video to improve his tech quickies. This is how it's done:
-Speak like a normal person --it's EXPLAINED as fast as possible NOT TALK as fast as possible.
-Tune down the jokes, which only adds "noise" (confusion) instead of clarity and sense --especially when talking 250 words/second.
And finally,
-The visuals need to actually add and compliment to what's being said (the explanation) instead of using silly, unrelated, 9gag-like images to compliment the jokes!
Thank you Taran for the wonderful job at explaining what video compression is.
Well, I think Taran is the one who edits all the videos so your critique is misdirected xD. (Except the talking part. That, I agree with.)
well, if that was the case then they both need to use this video as a reference and improve on the quality of their techquickie series; it's one of my favorite series on youtube and regardless of the quality, I still do appreciate all the effort they put into making them. Therefore, I'd really love to see it get significantly better and better, instead of silly and worse.
TH-cam compresses the fuck out of videos making them ugly in the proccess.
+rapper250 And then there's millions of people complaining about video game graphics before the games release.
+Staf Claes Yea, and all of the pop culture music these days are terrible. I wish I grew up in the 70's...
+NateD4WGG PLEASEBEAJOKE
+NateD4WGG youre joking, right?
xavier k. haberle yes lol
i did large calculation by collecting different datas. I will never forget this concept. Thank you
F***, i am done! I have 5 fu***** mbps in download speed and just 0.5 mbps in upload.
Welcome to the italian broadband my friend...
Nick76 I watched this video in 144p, I live in Brazil. If 360p, it would take ages.
Nick76 Ohh, well I got 700kbs download speed and well it takes 5min to upload 2mb, welcome to Denmark
+Nick76 I've got 75 Mbits/s on download in speedtest . com
Well i watched video in 360p and it even did not do buffer started instantly...welcome to INDIA ..where u will get cheapest and fast internet
@@KishanKumar-su2jp In Russia u'll get fast and cheap net, 1080p no loading
unreal what we can learn in 5mins!
Tks Taran!
I've gotten so used to Linus that this is so slow
Smooth transition into the Fractal Design ad. Good work!
Good job bro, you are improving each time! Keep up the solid videos!
Sometimes your video can go blurry like that if you have a slow hard disk or are reading off an external USB drive
It never happens on my RAID array but it does happen on the backup drive, had to adjust VLC settings to 3000 ms or 5000 ms or whatever
Hard Drives are actually very fast
"High quality", "TH-cam"... Heh.
ShadowMassacr13 wth u talkin bouuuuu bihhh. Eyem watchen des @ wor Q 30fpx
@@przemek4101 that video also compressed. TH-cam decreases quality on every video. If you upload 1080p 100k bitrate video, it doesnt matter how bitrate high is, youtube compresses to 1080p 4k bitrate. If you upload Hi-Res 5000 kbps bitrate FLAC sound, youtube compresses to 128kbps mp3.
@Sarvesh EB heh mainstream. Lucky if I get 720p on some pewdiepie vids. Watch latest vids on this channel where 4k isn’t even 4k
Compression on TH-cam now is way worse than it was before, I’m sure. See the 1176 kbps average for 1920x1080 video’s at 30 fps on TH-cam nowadays, which was also the video rate used for VCD. (which, by the way, was 240p 😱)
This explanation was fantastic - I'm amazed by how much I understand after just a few short minutes. Thank you!
Probably Taran's best video so far
Isn't it supposed to be discrete cosine transforms? 2:05
LOL yes, good catch.
How does file compression work? Like putting a file into a .rar or .zip and then decompressing it. How can you download a small file but end up getting something bigger after decompressing it?
SniX That actually makes sense. If that's how it works then I suppose there could be different "types" of compression. One could be better for smaller files where another could be better for larger ones.
So there could be different "libraries" so to speak.
With one type of compression, 110001 = 1 whereas in another type 110001 = 01
In the end they both mean the same thing when decompressed but one compressed file would be smaller than the other. Thanks.
Se7enAte The method you two describe is, in very simple terms, how lossless compression works; that is, using patterns in the file's data. A lossy compression method strips out data that you would be least likely to observe anyway.
It's called "lossless compression" and it's very interesting. The method explained in this video is "lossy compression," meaning data is irretrievably lost forever. So it's important to keep a very high bitrate copy of a video for future use.
Se7enAte There a different algorithms. A text file can be compressed like this:
it contains characters. ASCII has 128 different characters/symbols and each is defined by a 8 bit value = 1 byte (Unicode would be 16 bit).
So a file that contains the string "hello" would be 5 Byte in size, because it has 5 characters, each defined by a 1 byte value.
Now you can analyse the content to see that you only use 4 different characters, so 8 bit for each would be a total overkill. Instead you could say that the 'h' is defined by binary "0", the 'e' by "10", 'l' = "110" and 'o' = "111". So before the binary content of the file were 5*8 bit = 40 bit and now it's "0 10 110 110 111” = 12 Bit. And because the 'l' is used more than other characters it would make sense to define the shortest binary string "0" for it and you get 10 bit (actually 16 because you can't save half bytes).
But you also need to save the table with the definition for each character. In files with hundreds of lines the definitions don't really matter for the size.
Se7enAte It is in the right direction, but it is very very simplified. There are many ways to compress a file. Some replace parts, like you said. Others can do some very special mathematical analyses and rewrite the whole file into random garble that somehow can be decoded back to the original file.
This was one of the better as fast as possible episodes that actually covered the entire subject and a bit more. It seems like everytime Linus does an episode he focuses on speed by talking really fast and not giving too many examples making the video well. . . As fast as possible. All I'm saying is I would prefer the episodes be slightly longer in exchange for a more in-depth explanation with visual examples and analogies. Maybe next time you guys can cover what are floating point operations
Please tell me why when back in the day, when I rip a dvd and compress the file using the same settings (that I can find) of a video downloaded off of the net containing identical content lets say a movie, my video is maybe 2gb in size where as theirs is 700mb and often mine would look crap where as theirs wouldnt
A MPEG and MJPEG is not the same thing. MJPEG is a movie where every frame is a I-frame.
3:40 thats how it worked 1993 when MPEG 1 was relied.
The thing is that the B frame referates the last I frame, and the P frame referates the nearest B frame. Mpeg 2 (and 3) is very similar. The order is always I-B-B-P-B-B-P-B-B-I. So every 9:th frame is a picture.
In MPEG 4 H-263 they change it up. Firstly they use more modern I frame compression. The one uses is similar to JPEG2000 that work with a very different method. Also, in MPEG4 H.263 the order of frames is chosen by the enocode, and also the B frame is removed using only better quality P frame (also makes it not possible to decode the movie in reverse, well at least not with out a lot of memory). Thats why mpeg 4 compress almost twice as good as mpeg 1 with the same quality.
In early encoders the I frame was encoded once every second (unlike Mpeg 1 where its encoded about 4 times a second). Later encoders only use a I frame for every scene change.
Today H.264 and similar encoders is mostly used. Its similar to H.263 but uses newer I and P frames, also with a lot more features. coming online soon H.265, that in turn is about twice as effective than H.263.
So geting better quality with lower bandwith is posible, use a newer codec.
3:50. That is not compression artifacts, that just low resolution
"Now for an MPEG, sometimes called a Motion JPEG..."
Who the hell researched this?
SirCrest IKR 😂
Isn't it Motion Pictures Experts Group?
@@brianfong5711 hmm
@@brianfong5711 looooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooool
Loving this guy, and all the technical stuff :)
I hate ads but you guys are so creative i wait to watch them now.
Very informative video. Thank you for the free education!
Alec Eisenbison And if you have adblock, be sure to unblock this channel to support them even more :)
Animiles that's like working 24h volonteering to aks people for money and getting 5$.
Better just work and donate than spend 6million years doing jack shit.
+Animiles how do you unblock certain channels?
lisa lavergne
If you got ABP you can't I think. But if you got the adblock from getadblock.com you can click the icon and it should show it there. Otherwise you have to enable it in the settings.
Ok ... , So when are you gonna tell us how to do it ? Smh
xD Lol oh gosh.
WHZGUD2
Handbrake + Constant quality (RF=0) ->"lossless" but compressed by more than 50%. At least in my case.
WHZGUD2 You don't really "do" it, you just kinda keep it in mind when you're creating content, in which case a video editor like Sony Vegas or Adobe Premier handle it for you.
+FirstDragonSlayer Can i see your Handrabke setting in picture to compress video? ^_^
San San
H.264, profile - main, level 4.0, const. quality 0 RF, preset - very fast.
unless you plan on editing much in after effects post-compression, than you'd have to go advanced - to remove all the B-frames (frames which take data from previous frames, slows down rendering by a LOT, as AE would have to read data through several sources).
Awesome Work Taran!
Keep up the good work :)
Hi can you compress a hd timeline video which as you know is 60 mins when you put it onto a dvd-r is it possible to put 120 mins on a dvd -r let me know thanks .
If I had Google fiber I would have a uncompressed 4k fireplace video running 24/7. Why you might ask? Because I can.
I know there are data limits by some places for extreme cases like 50gb, 250, 500gb, why would fiber not have this, of course there 1gb a seconds suggest they might have a terabyte limit or something, but that likely is quick at your goal.
Nawnp MCPE Well Google advertizes that they have unlimited data for Google fiber.
Well that's nice, you can use more data then half a country monthly.
Nawnp MCPE
Did you do the maths?
Yes, a single computer could be pulling above 2.5 million gigabits a month, or 2500 terrabits, up to 2.6 pets its, let's say average person does 200gb a month(which is overestimating in other countries by far). Then it takes 13,000 people to tie to you on a single computer(imagine you on 2 or 3). Some very tiny countries are just a few thousand people, and I can almost assure that those 25,000 aren't using the American average so it's easily possible.
"only 2.5gb in 5 mins"
bruh..
I can sell you that for a small loan of a million dollars
That's like 9 MB/s
Lobster with Mustard and Rice A video of 3 hour duration with true color format and an uncompressed size at 1080p (24 fps) will take around 1.5 terabytes of storage space.
Here's how to calculate the size of one frame.
1920 x 1080 x 24 = Result in bits
with 1080p and a true color pixel which is 24 bits.
that is around 5.9MB per frame.
I'm actually using your video's to study for my exams (Audio/video stuff) The teacher could really use these video's during the courses, it's fast, it's crystal clear, and you actually show stuff, and stuff. I think I'm going to propose using these vids :)
I think Taran does a fantastic job hosting some of these Fast as Possible.
What would happen if somebody made a video that every single pixel are different in every frame and uploaded it to youtube or other sites?
well what he didnt really say in the video: compression will try to find a way to find groups of pixels that are different but similar and then find a colour that is a blend of those pixels to replace them with so it looks almost the same but takes up less data. so with an image as you described, the compression algorithm will just keep doing that until the image reaches the target bitrate (4mbit per second for 720p and 8mbit per second for 1080p in the case of youtubes video compression for example)
Then imagine video that is just plain black. No changes at all, just black. That would be really high quality black video because it doesn't need a lot of bitrate at all.
I don't know, youtube would still mess it up somehow.
TH-cam would flag it for copyright violations and refuse to process it and delete the person's account.
Firecul42 true :D
what about .mkv files?
MKV is a container, just like WinRAR, 7zip or Zip, MKV can contain more then one video/audio and subtitle, also can attach any file even you can put ISO image to fool other people or copyright agent... =P seriously, put your stuff in MKV make people believe is a video :)
also can attach ISO file :)
I enjoy Taran's fast as possible vids
now this is a boon for me... i have got my exam tomorrow and i could not have found anything better thn this,,,,,,thanx,,,,,,,
lol the video has 264k views
h264
ba dum tiss
k bye
h264 saved my ass
yo im using h265 to compress my 1tb hard drive of videos
it's saveing me 500 GB
Hevc compression 4K @@0s0sXD
Like if you watch TechQuickie sped up with the HTML5 player.
Gonna have an exam about this stuff tomorrow. It helped me, thanks!
so what i need to know from this. what render should i do for you tube?
2.5 GB in 5 minutes! SLOW! Wait till you come to India!
Randomiz8or inator Now imagine that with BSNL internet :(
***** yeah, i have mtnl and it is only 500mb in an hour, wish i had better speed
***** I used to live in india. Then I took a kurma to the face
***** forget airtel, its all about bsnl
Doesn't anyone in the North India have ACT Fibernet or Excitel ? awesome speeds at affordable prices ! Mine's a 100 Mbps plan with download speed of 11.2 MBPS :) ... there are also 75, 50, 20, 10 Mbps !
Guys, watch this at 1.25x speed t make this guys slow speaking more bearable.
+MegaShrooom how is that slow speaking ?
+MegaShrooom Muuuch better!
+MegaShrooom I even watch Linus at 1.5 - 2x depending on the video. I watch most youtube videos at 1.25 - 1.5x
Moka hless I guess it saves time, :P
+MegaShrooom You can even watch the video at 2x speed without it being played too fast
Hi guys. I use .mov on ScreenFlow for mac to compress my videos. it is a lossless hd format. I have an 88 GB file size on storage and that is just way too much. When I use .mp4 as a format, its file size is greatly reduced, but there are random green squares popping up after putting it on youtube. Is this the software or the file format?
Can I have all this info all together in a detail pdf file?
6 minutes and you didnt fucking tell us a single program to use for compression. 6 minutes wasted.
How dare they produce, an informative, and free video, about something no one forced you to watch.
What an entitled piece of shit you are.
Handbrake is a good software for compression, it works on Windows, Mac OS X and Linux
Virtualdub. Free, lightweight, and portable (no install).
That not fast Internet i got 100mbit/s up and down.
My aussie internet cries at your speed, 10 down 0.8 up...
DaMagicalManiac 3 down 0.2 up in Brisbane...
You get 100 up and 100 down? I call BS
Wevans Evans i live in sweden.
***** thought google was banned? ... and porn censored? or am i thinking china?
Teran to be the new boss. He is cool. He explains things more slowely and easily and seems he isn't going by wiki often. Like he said. He doesn't understand some of what linus says. Says it all really. Thanks Teran (I may be spelling yours wrong. Sorry😕)
Also I use high bit rate for my gaming videos. They are normally 4GB size for a 20 min video but after rendering and slight compression it is 1.7GB. It takes TH-cam 20 mins to process and me 5-10 mins to upload.
I just realized that my Fractal Design Define R2 XL doesn't have any logo on it ;S so clean looking case. i love it.
Is that fast internet? Mkay... I went a big step from dial up to chello and then fibre sooooo.... www.speedtest.net/my-result/3680952035 I never knew mine was fast...
Yes thats fucking fast, I have to live with 1.0 megabit per second.
Yes lol insane upload speed mine is 15 down 0.8 upload
That's fast as fuck.
95/67Mbps speeds here.
***** byte? that's 8Mb/s or you mean 1Mb/s. the small b stands for bit and the capital B stands for Byte.
The horror on your face is returning. Please address.
*manliness
Oh, fuck off! Everyone was saying how much they missed it after he shaved it off!
Personally I find his five-o-clock shadow just fine. His mustache? I'm impartial to it, but I can see why others find it distracting.
Great stuff, very well explained! Keep up the good work.
Decades ago, I remember attending a talk at a film archive library where the speaker told us why their film stock had to be preserved on physical celluloid. They did the sort of calculation you did, pixel height x width x colour bits x frames per second. I walked away convinced that one feature film, let alone 100,000 would use more magnetic storage than any such institution could imagine or afford. It took only a few years before mpeg compression, faster CPUs, and high density storage totally solved the problem. Never underestimate progress!
Good explanation, well done!
What's that video you were showing that was corrupted? I have been searching for ages.
THE BEARD IS BACK AND I LOVE IT!
but how can i compress a video that is 151MB down to 25MB and where i can still be able to upload in Facebook messager i use hand brake and some other online video compressor but it will not let me upload to fb say to make sure i am using a valid file
What about combining both video compression methodes together to make the video even more smaller.
And how about doing the same thing with audio by synthesesing it(ska cd to midi) just to save more space.
to me as a video editor/creator this is very interesting, more of these kinds of stuff please! ^-^
Could you please make a tutorial on what programme are you using and how are you doing it?
When I render the same video in .mp4 format, it's size is way lower than a .wmv or .avi file of the same settings, why is that?
someone know where the hole thing from 4:06 is ?
So if I Compress a video on my laptop via windows 10 and put it in a USB to store it then move it back to my laptop and unzip it the video will not look as good?
Thanks guys! Very helpful!
can you also copress to improve fps ?
like for the LG 34UM95-P to get above 60fps?
if this video is used in flight then how it can be compressed to store on a cloud and may be in black box
Sweet transition.
I exported a 1 hour video with audio but with a completely black screen from premiere pro as a MP4 file but it was 4 gigs! Is that video playing 30 black frames every second? Do I need to use some video compressor program to make that video smaller or can I do that it premiere somehow?
+Ninja1inblack I believe if you export it at H.264 at Medium bitrate instead of High bitrate it should be smaller. But I doubt it would get smaller than 800MB. Why don't you try to lower the resolution?
Got a Fractal Design case, and I've been subscribed in months :D I do share a couple of videos too, to the ones I think can benefit from them :) Can't do much more than that :D
Love the show! It's my favourite TH-cam channel by far :) Keep making these awesome videos, and I dont mind the adverticememt, actually they can be quite fun at times :D Keep making these! See you in another episode :)
Any suggestion for a good file compression tools?
what happens if u make a video in which every pixel in every frame changes color
can it be compressed then? or rather does it change size after compression?
Hello. I didn't get to explain this in the video, but random static is pretty much impossible to compress. depending on the severity of compression, it just ends up looking like blocky garbage.
Loving these series of videos. Can you do one for comparison of wireless mirroring pc to tv? Ie. miracast, Apple TV, dlna etc?
Hey Taran! Could you please name compression apps to offer an option to choose a lossless compression from?
This video cleared a lot of thing for me. Thanks guys.
Could you do a video of "items" for us high end users about products that can easily store fully uncompressed videos please. Like for a home theater PC.
to upload a video on TH-cam, what bitrate is recommended for which resolution and fps? why do some 1080p videos look "pixelated" from time to time, and some are extremely good looking?
Anyone know where i can get help with building my pc I have the parts but not the funds :/ Most of my parts (Fans, Case, Water cooling, RAM) Is Corsair
Good run-through, considering the "as fast as possible"-aspect.
I knew it all because I am a compression nut who fiddled with XviD as a kid and with professional Intra-frame codecs as an adult.. now with a job in a certain field. I don't have much to add, but appreciate that you took your time to explain for people. Maybe you could've talked about lossy vs lossless compression, as every method explained here counts as lossy, but that'd basically be describing zip ;)
Next up I propose a video about RGB vs rec.709 vs the new color space in the upcoming 4K-standard ;) I bet at least 10 people would be interested enough!
Great vid as always!
Motion jpeg =/= mpeg. Motion jpeg is it's own compression format and is basically just a bunch of jpeg images with no interframe compression (useful for editing, but not distribution). With h.264 video (like this one) the macroblocks start at 16x16, but can be further broken into 16x8, 8x16, 8x8, 4x8, 8x4, and 4x4 depending on the encoding settings.
What's a good bitrate that makes the video look as good as possible without too large a file size?
Love these videos!
very good explanation
super usefull for me, well explained! just love this explained videos, thank you guys.
Very informative, would appreciate an uptade videiu though, as things have changed quite a bit in 5 years
I love Taran!
Thanks for this perfect explanation!
Linus, what is AVR and UPS? difference? uses and help to PC and other appliances? How they work?
thank you for helping and well explanations👍
What about increasing the bit rate of a video? How will it affect it?
What a small world, I'm preparing for this year's lectures and what (or who) do I find doing a video on compression? Taran! I must say that the topic is somewhat familiar to me. If I were marking this video, I'd have to take points off for the "MPEG sometimes called Motion JPEG" answer, but great video! Way to go!
Can you tell us about CBR and VBR? When and how to use them?
so guys........ question. in the video they said higher bitrate=higher quality video=bigger file size....
but what about video bits? i mean 8-bit and 10-bit video that's starting to grow more popular? 10-bit seem to deliver as much quality, at lower bitrate and smaller file size, but at the cost of higher processing power(because of the not yet existant hardware accleration support for 10-bit i heard) can you explain that?