Codec Lecture

Подписаться 727

Просмотров 84 тыс.

50% 1

This is a lecture on Codecs. Why we compress and decompress and what is really happening with shrinking the size of our videos.
We talk about Picture, Audio, color, and frame. and how codecs interrupt that information to make online video look good and deliver smoothly for youtube and elsewhere.
Compression is a balance of Quality and file size.
This is part of a class I teach at Weber State University.
The video we watch at the end can be found here... • Encoding 101 - learn t... ... though some of the info is a little outdated now. ;)
_____________________________
//RESOURCES
Looking for more help as a content creator? Check out the resources at onlinecreatorstudio.com/
//FREE CREATOR COMMUNITY
Join our free community of content creators, THE STUDIO! (learn.onlinecreatorstudio.com...) This is a space where we can all come together to share our ideas, work, and passions. It doesn't matter if you're a beginner or a seasoned pro, you can join us. For a limited time, new members will get access to our online courses for learning Final Cut Pro and more.
//COACHING
Like what you heard? Work with me 1:1 as you create your own content. learn.onlinecreatorstudio.com...
//FOLLOW
Subscribe to the OnlineCreatorStudio: / @onlinecreatorstudio
Join the newsletter: learn.onlinecreatorstudio.com...
Our Website: onlinecreatorstudio.com/
//FOLLOW ME
Facebook: / drewmakesstuff
Instagram: / knite20
Twitter: / knite20
_________________________________

Опубликовано:

24 июл 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 64

@knite20 Год назад

While this may be an older video, I'm still teaching all of these things! If you like this video and want to learn more about video production, editing, or storytelling, check out OnlineCreatorStudio.com and our new mini course: “Zero to Hero: How to Create Stunning Instagram Reels with Final Cut Pro” at learn.onlinecreatorstudio.com/zero-to-hero-how-to-create-stunning-instagram-reels-with-final-cut-pro

@ryans413 9 лет назад

I already knew all this its not hard to learn tought my self. This guy seems to be a cool teacher i wasnt bored with how he was teaching

@dipaldesai6956 4 года назад

Sir You remind me of Tom Sonia's of surfaced studios Your teaching is extra ordinary Thanks

@Ferdinand208 4 года назад

I wish I knew the tech level of this video. This is really basic information you could learn within 1 hour of Wikipedia reading. I learned that people in 2012 still thought that macs were better at audio and video. And that pc's are cobbled together unlike macs which are magically formed in mount doom.

@alirasclot 11 лет назад

Oh my goodness! I've been looking long and hard for something like this! Thank you so much for posting this! I was looking forward to what came next when the video ended. Arrrggh! More! I need mooooorrrrreeeee!! :)

@CKRTGRDN 7 лет назад

Thanks for the lesson, really broke down what makes up a codec, cheers.

@personaladvanced 9 лет назад

Just want to say a big thank your explanation on Codecs.

@JonnyInfinite 10 лет назад

This was pretty good, but needs subtitles on the questions as they are difficult to hear..

@cliffsitems9832 5 лет назад

Thank you for this video. Helps me understand what the heck codec is for!

@tonytoes2 8 лет назад

Great summary of codec ..thanks for sharing

@davdua1991 9 лет назад

Thank you for the lesson.

@knite20 11 лет назад

Not yet, but I've done several lectures in my classes. I'll try to get something posted soon.

@knite20 11 лет назад

Thanks Ali, I'm teaching this course again this Semester, I'll be posting more lectures for sure. Subscribe!

@richardl.rayiiitr3media__367 2 года назад

Still relevant information. Thanks 🙏

@DbZMaHuAk 11 лет назад

That was quite informative . Thank you for sharing

@moreapropos 8 лет назад

Great video. Can you please explain why people say that AVI is a container for uncompressed or lossless video but then they say there is a CODEC inside? If it is uncompressed, what is the codec doing? Just zipping and unzipping it? It is just confusing to me.

@knite20 11 лет назад

as far as I know, .mts files are used by Canon and other cameras to be able to shoot HD footage and store it as quickly and tightly as possible. You're correct, the codec.. or algorithm is doing exactly that, balancing the size with the quality. I think of it like a dehydrated file. When I take a clip into an editor, it will rehydrate (transcode) it and make it more robust and editable.

@SanjayNiyogi 10 лет назад

Very nicely explained.Usually unexplained elsewhere.

@AngelEchoes86 10 лет назад

This was really useful. Thanks!

@maikkelih9782 2 года назад

This guy, really cool, codecs and H.264, and Today H.265 from 1 or 2 K quality to 16k.😁👍

@yank3970 6 лет назад

thanks for sharing Drew Tyler

@jasvinderghai 8 лет назад

Great Video!- Thanks

@louiraspberry1904 10 лет назад

MP4 is not a codec but MPEG-4 is. Popular MPEG-4 standards are known as the advanced simple profile. H.264 is also known as MPEG-4 part 10.

@dnvgoodwin1465 7 лет назад

Also in later 1990s and early 2000, when peaple say MPEG-4, it was h.263

@publius1564 10 лет назад

Awesome tutorial!

@miguellorenzo3726 10 лет назад

Excellent pace

@Mathgodpi 9 лет назад

Very well explained.

@albinantony9134 6 лет назад

Hi sir thanks a lot u r great kindly explain the drop frames in ntsc as a video thanks...

@glrebirth9 11 лет назад

This is an excellent lecture about the basics of codecs, but I dying to learn even more! Do you have any other videos along the same subject, anything more in-depth, maybe talking about industry standards and practices?

@fcbaum 11 лет назад

Thank you so much for this video!

@rikkikirr8538 11 лет назад

thanks Drew as a non video/audio phile thats was enlightening ... now can you suggest a codec for mp4 for any player, i have tried VLC but cannot play mp4 downloads ... thanks again ..

@knite20 11 лет назад

The Bitrate setting will determine how much data (kb) fits within a second. (s) i.e., 10,000 kbps. Regardless of what you specify as the amount of data it can use for each second of video, you can also specify an independent key frame rate. Hope that clears it up! I'm teaching this course again this Semester and I hope to update some of these lectures and add more.

@GranVlog 8 лет назад

Can someone explain to me how its possible for the 1gb compressed file on his sd card to be 60 gb when decoded? And how can all the pixel information still be there?

@albinantony9134 6 лет назад

Gran's Stuff it can be done because as he said that it ill carry the moving information and leave the rest so it has been manipulated like that as compression h 264 AVC advance video codec

@Trance503 3 года назад

I want to know where can I get a free non paid program file to fix up subtitle synchronisation on my movie

@TheLivingDeadOne 9 лет назад

I love the size of the wobbly whiteboard,. for this hotel conference presentation,.

@rkaradaghi 9 лет назад

2e7earrrf

@charliebravo6193 11 лет назад

Nice. Well done and thank you.

@freddymontvlinks 4 года назад

very interesting class

@antheavalerani3776 6 лет назад

Thanks for sharing

@darkmxk 7 лет назад

great lesson :p

@bamlani 7 лет назад

Well explained for a layman like me. Thank you

@sesijeya 9 лет назад

Its helps a lot! thanks anyway...!

@oneerc 9 лет назад

Is there anything I can do to preserve the quality of an AVCHD recorded event after stupidly removing the .mts and not keeping the folder structure? I discovered how much better my end product is if I kept the folder structure but I have files now and no structure.

@oneerc 9 лет назад

I'm using Power director 13.

@knite20 9 лет назад

Eric Feinstein There is software out there that can rebuild the folder structure if you give it a folder full of .mts files. Here's one from Panasonic, eww.pass.panasonic.co.jp/pro-av/support/content/download/EN/restorer.html OR you can use just encoding software, like iSkysoft iMedia converter to transcode the .mts into another format that Power director likes.

@oneerc 9 лет назад

Thank you Drew! That may be just what I need!

@knite20 11 лет назад

Du-Marc, Yes, avi,mov,mp4 are all containers,, they can have any kind of codec inside. There are some standardized pairings, like mp4s mostly contain h.264. Here's a great video about it. Search Encoding 101 by smedia1

@ronnieahabwomugisha5283 4 года назад

thanks alot

@knite20 11 лет назад

Understandable, Not sure I did the best job explaining that. A 'key frame' in compression is a setting that determines how many frames you'll see that are reusing compressed data to draw the scene. If you specify a Key Frame every 24 frames, then every 24th frame will be a fully rendered frame. Sometimes you can see this in overly compressed online video. the picture will be clear and then degrade/pixelate for a second or two before sharpening up again when it reaches another key frame.

@KWILLFILMS 8 лет назад

thanks mark cuban

@knite20 11 лет назад

The most common codec for mp4 would be h.264. But mp4 is tricky as it can be both a container...AND a codec. VLC is a hefty player and I know it has several options for codecs it can play and others you can install as 'packages.' There are tons of simple small programs out there that claim to play anything. But VLC is the most universally used.

@mrmrigank7154 5 лет назад

can you explain drop frame here, from video i didn't understand the thing 59 29

@lbarnard86 Год назад

The explanation of drop frames was a little off.

@IceCreamHeadache22 8 лет назад

Hahaha so random, you were just at Mashable the other day

@knite20 8 лет назад

Holy Wow! That is random! This is my 'day-job,' I teach video production at Weber State in Utah. The stuff I was doing at Mashable was my summer fun-job. :) Can't wait to see what you guys create out there! @knite20

@knite20 7 лет назад

It's all in the compression codec. For example, many cameras shoot with the AVCHD codec, it's small in size, but not great for editing. I like to think of it this way, the information is all there but it's "dehydrated" to make writing easier and faster for the camera. Then when your editor like Adobe Premiere or Final Cut get a hold of that condensed footage, it transcodes it to something it can read and display faster, which means much more data. Some Codecs are great for capturing footage, and others are great for editing because they're robust. Often we transcode the file to move from Shooting to Editing... and then often we transcode again for distribution. ;) Does that help?

@AaronSlawson 10 лет назад

32 Shades of Grey :D

@bicycleninja1685 4 года назад

All these things determine the q.... anyone... anyone... the quuu.... anyone.... anyone... Bueller...

@mtylerryan 6 лет назад

What is with these garbage annotations and inserted texts?

@TheLivingDeadOne 9 лет назад

But this was 2011.

@stevelee2504 5 лет назад

Don't waste your time to watch this. It's covers 5% of the entire explanation of Codex. Read the Mpeg-2 or Mpeg-4 or H.263/H.265 Specs. Read the 700 pages book to get a true understanding. No short cuts in Life.