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4K HEVC/H.265: How to Fast Encode and Decode 4K HEVC on PC/Mac with Hardware Acceleration

What is HEVC/H.265? What does HEVC mean for 4K videos? How to encode or decode 4K HEVC videos at super fast speed?

These years H.264 (also known as AVC) is the most common video compression standard for movies, TV series, recording clips and more. H.264 lends its popularity to the fact that it offers great quality at relatively low bitrates. However, there're more and more videos encoded with HEVC appearing. As the successor to H.264, HEVC (short for High Efficiency Video Codec and also known as H.265) works more efficiently because it offers roughly double the compression ratio for the same quality. It reduces file size dramatically without compromising on quality, for which HEVC becomes one of the 4K codecs. Required bandwidth for 4K broadcast is reduced from 32 mbps to 15 mbps after changing codec from H.264 to H.265/HEVC.

Do you want to encode 4K HEVC videos for saving storage space and bandwidth? Or, do you want to decode 4K HEVC to a compatible format to fix playback issue? The following hardware-accelerated 4K HEVC transcoder can process 4K HEVC encoding and decoding quickly without hassle.

Top-tier Hardware-accelerated 4K HEVC Transcoder Software - WinX HD Video Converter Deluxe

• Encode 4K H.264 videos to 4K HEVC with .mp4 or .mkv file extension.
• Decode 4K HEVC videos to MP4, H.264, MPEG4, AVI, WMV, Xvid, DviX, MOV, etc.
• Compress 4K HEVC to 2K, 1080P, 720P or other resolution in desirable format.
• Free download 4K HEVC content from YouTube and other 1000+ sites.

With this tool, 4K HEVC transcoding isn't a complicated and time-consuming process. Designed with straightforward layout, users will understand how to encode and decode 4K HEVC videos without guesswork. Armed with multiple speed-boosting technologies, Intel QSV, MMX-SSE, Nvidia CUDA/NVENC, Hyper-threading and AMD 3DNow! respectively, it becomes the fastest video converter. Since updated to version 5.11.0, QSV and NVENC hardware acceleration is available for transcoding both H.264 and H.265. More to the point, it is the only 4K HEVC converter that supporting level-3 hardware acceleration which means that hardware acceleration is utilized in decoding, encoding and also processing. Therefore, it keeps a good balance among conversion speed, video quality and output file size.

Hot topics:
Whether My Computer Is Hardware Acceleration Supportive?
Does Hardware Acceleration Lower Video Quality?

How to Encode 4K HEVC Videos?

Above all, free download and install the edition compatible with your computer. It is a lightweight program free from extra stuff. Then open it, and follow the steps I write below.

transcode 4K HEVC
Transcode 4K HEVC

Step 1. Load the videos you want to encode to HEVC 4K.
You have two ways to load source files: click + Video to browse and select target items; directly drag and drop them into main UI of this 4K HEVC encoder.

Step 2. Define 4K HEVC as output.
There're two output profiles for HEVC: General Profiles -> HEVC Video; PC General Video -> HEVC Video. If you choose the first one, your resulting file will be saved in MP4 file format. Picking the second will give you a MKV output. Specify one as needed and click OK.

By default, it will keep original resolution. Click gear icon, and you'll be directed to a new panel to tweak output resolution, frame rate and other parameters. For video editing, you're supposed to tap the scissor-like icon.

Important: To speed up video encoding, check Intel/NVIDIA options under the preview window of the main screen to activate its unparalleled level-3 hardware acceleration technology.

Step 3. Begin encoding 4K HEVC.
After finishing setting, simply click RUN button and this 4K HEVC encoder will begin working.

Then, you can rely on a critically acclaimed free HEVC video player like VLC and 5KPlayer to play 4K HEVC content on high-end computer.

How to Decode 4K HEVC Videos?

Despite that HEVC is more efficient than H.264, it isn't as universal as H.264. The majority of devices and programs still don't support 4K HEVC videos because of format incompatibility issue. To solve this kind of problem, you can decode your 4K HEVC videos and encode them to H.264 or other accepted format.

Likewise, download and install the 4K HEVC decoder software - WinX HD Video Converter Deluxe or its Mac version (choose one based on your computer OS) before any further.

decode 4K HEVC
Decode 4K HEVC

Step 1. Insert your HEVC encoded 4K videos (both 4K 60fps and 4K 30fps supported) captured by iPhone or other devices into the newly-installed tool by clicking + Video button.

Step 2. Choose output profile, say 4K MP4 Video.
There're 420+ output profiles in total to satisfy different user needs. If you want to convert HEVC to a widely accepted format without degrading video resolution, you can choose 4K MP4 Video (codec: H.264+AAC) belong to General Profiles category.

Also, you can modify video audio parameters such as compress 4K to 1080P, execute basic editing like splitting video, and do what you want as needed.

Additionally, don't forget to enable Intel QSV or NVIDIA NVENC/CUDA hardware acceleration to boost speed.

Step 3. Decode HEVC/H.265 4K videos instantly.
This operation will be carried out immediately after you clicking RUN button.


author - Donna Peng

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Donna Peng's fascination with multimedia began at an early age - shortly after she licked the physical disc and then she's been obsessed ever since. Her decade-long career at Digiarty after the graduation has seen her unmatched expertise in the field of DVD, digital video, software and anything related to home theatre. She is currently fascinated with photography.

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