- #Why is mediacoder x64 compressing video how to#
- #Why is mediacoder x64 compressing video movie#
- #Why is mediacoder x64 compressing video software#
You will also need to use an operating system and video player that supports not just HEVC video, but HEVC hardware decoding-and this is a bit spotty at the moment. AMD Radeon R9 Fury, R9 Fury X, R9 Nano, or newer graphics cards.NVIDIA GeForce GTX 950, 960, or newer graphics cards.AMD 6th generation “Carizzo” or newer APUs.Intel 6th generation “Skylake” or newer CPUs.Your computer will need one of the following pieces of hardware in order to hardware decode HEVC video: But when it comes to playing HEVC videos on your PC, things get tougher. This isn’t a problem for standalone playback devices-4K Blu-ray players, including the one in the Xbox One, are all built with HEVC in mind. So, HEVC doesn’t do you much good unless you have a graphics card and a video player that both support HEVC hardware decoding. So, while many PCs and programs can attempt to play an HEVC video, it might stutter or be very slow without hardware decoding. A graphics card is far more efficient, as long as it has built-in support for the codec of the video you’re trying to play.
#Why is mediacoder x64 compressing video software#
There are two main ways a computer can decode this video: software decoding, in which it uses your computer’s CPU to do that math, or hardware decoding, in which it hands the load off to your graphics card (or the integrated graphics chip on your CPU). These compression algorithms are complex-it takes an awful lot of math to figure this out on-the-fly as a video is playing.
#Why is mediacoder x64 compressing video how to#
RELATED: How to Make VLC Use Less Battery by Enabling Hardware Acceleration HEVC has been an approved standard since 2013-so why don’t we use it for all videos already? The Catch: HEVC Is Slow Without Hardware Accelerated Decoding HEVC makes 4K video much easier to stream, download, or rip to your hard drive. This is particularly important for 4K video, which takes up a huge amount of space with AVC. You can see a more technical explanation of this technique in this great video from HandyAndy Tech Tips:Īgain, there are other things going on in HEVC, but that’s one of the biggest improvements-and when all is said and done, HEVC can compress videos twice as much as AVC at the same quality level. With HEVC, those chunks can be up to 64×64 in size-much larger than 16×16, which means the algorithm can remember fewer chunks, thus decreasing the size of the overall video.
It builds off a lot of the techniques used in AVC/H.264 to make video compression even more efficient.įor example, when AVC looks at multiple frames for changes-like the Captain America example above-those macroblock “chunks” can be a few different shapes and sizes, up to a maximum of 16 pixels by 16 pixels. High Efficiency Video Coding, also known as HEVC or H.265, is the next step in this evolution. (Of course, any video will lose quality if you compress it too much, but the smarter these techniques are, the more you can compress a video before getting to that point.) HEVC/H.265 Compresses Videos More Efficiently, Perfect for 4K Video It’s all about making the video file more efficient without compromising quality. These are just two over-simplified examples of the methods AVC/H.264 uses, but you get the idea. So, the compression algorithm can split the frame up into those same macroblock chunks and say “you know what? These chunks don’t change for 100 frames, so let’s just display them again instead of storing the entire image 100 times.” This can reduce file size dramatically. The background doesn’t change much-most of the difference between frames is in Iron Man’s face and body. Take this shot from Captain America: Civil War. In video, this is called intra-frame compression-compressing the data of an individual frame.ĪVC also uses inter-frame compression, which looks at multiple frames and notes which parts of the frame are changing-and which aren’t. Take this still frame of me and my son-much of the sky is the same color blue, so the compression algorithm can split the image up in to chunks-called “macroblocks”-and say “hey, instead of remembering the color of each pixel, we can just say that all of these chunks along the top are the same color blue.” That’s a lot more efficient than storing the color of each individual pixel, which lowers the file size of the final frame.
#Why is mediacoder x64 compressing video movie#
In order to fit that movie on a Blu-ray disc-or make it small enough to comfortably download from the web-the movie has to be compressed.Īdvanced Video Coding, also known as AVC or H.264, is the best standard for video compression in widespread use, and there are a few different methods it uses to try to reduce the file size of your video.įor example, in any given frame, it can look for areas that are mostly the same color. When you watch a Blu-ray disc, a YouTube video, or a movie from iTunes, it isn’t identical to the original raw video that comes out of the editing room.