Video converter to modern formats AV1/H.265(HEVC)/H.264(AVC) with fast GPU acceleration for free! AV1 has high compression ratio — better than H.256/H.264. It allows you to save disk space for video storage. AOMedia Video 1 (AV1) is a modern open video format that provides superior lossy and lossless compression for video files (replacement for H264/265). One of the interesting features is that you can specify the desired file size, for example, 1400 MB for a movie (or as a percentage, for example, 80% of the original size), and the program will automatically select the conversion settings for the best quality. Support for encoding and decoding on AMD and Nvidia video cards provides very fast video conversion (several times faster than on the processor). Multithreading support also speeds up the video encoding process. Important: AV1, unlike H. 265 (HEVC), is open, meaning no one has to pay to use it. It uses program ffmpeg.exe. Batch processing of files and drag-n-drop. Program optimizes your file to new one with «_optimized» name ending (source file will remain intact). Reduce the size of your video files in one click! AV1 video files are 50% smaller in size compared to H.264 and 30% to H.265.
— High compression ratio.
— Supported formats: avi, mp4, mkv, webm, mpg …
— Automatic/manual mode for optimal compression.
— Quality factor (CRF, 1-51), video/audio bitrate (kb/s).
— Option for lossy compression to a smaller size.
— Option for lossless compression.
— Support for encoding and decoding on AMD and Nvidia video cards (the speed is much higher than on the processor).
— Batch video processing (you can add multiple files at once for conversion).
— Multithreading support — number of jobs (threads).
— Encoder for compression: AV1/H.265/H.264/VP9/VP8/Xvid.
— Codec for video decoding: dxva2, d3d11va, cuda.
— Options «Reduce the size to …» (in megabytes or % of the original video size).
— You can set «Run in background (without console output)» or uncheck it for manual process control.
— FOSS and royalty-free.
— about 50% smaller than H.264 for same visual quality and 30% smaller than H.265
— Smallest size, low quality.
— Medium size, medium quality.
— Optimal size, good quality.
— Large size, better quality.
— «Visually lossless».
— Best quality, biggest size (Lossless).
AV1 was developed as a successor to VP9 by the Alliance for Open Media (AOMedia), a consortium founded in 2015 that includes semiconductor firms, video on demand providers, video content producers, software development companies and web browser vendors. The AV1 bitstream specification includes a reference video codec. In 2018 Facebook conducted testing that approximates real world conditions, the AV1 reference encoder achieved 34%, 46.2% and 50.3% higher data compression than libvpx-vp9, x264 high profile, and x264 main profile respectively. Like VP9, but unlike H.264/AVC and HEVC, AV1 has a royalty-free licensing model that does not hinder adoption in open-source projects.
It was developed by the Alliance for Open Media, which counts Amazon, Apple, ARM, Facebook, Google, Intel, Microsoft, Mozilla, Netflix, Nvidia and Samsung among its members, and is designed to offer internet streaming efficiency upgrades without affecting quality. That makes it an important step in the uptake of streamed 8K video, given the more data-heavy demands of this higher-res format.
ROYALTY-FREE — Interoperable and open.
UBIQUITOUS — Scales to any modern device at any bandwith.
FLEXIBLE — For use in both commercial and non-commercial content, including user-generated content.
30% BETTER COMPRESSION — Uses less data while delivering 4k UHD video and beyond when compared to alternatives.
OPTIMIZED — Developed for the internet and related applications and services — from browsers and streaming to videoconferencing services.
LOW FOOTPRINT — Designed with a low computational footprint and optimized for hardware.
CONSISTENT, HIGHEST-QUALITY REAL-TIME VIDEO — Bringing features like 4k UHD, HDR, and WCG to real-time video.
AV1 is a traditional block-based frequency transform format featuring new techniques. Based on Google’s VP9, AV1 incorporates additional techniques that mainly give encoders more coding options to enable better adaptation to different types of input.
Frame content is separated into adjacent same-sized blocks referred to as superblocks. Similar to the concept of a macroblock, superblocks are square-shaped and can either be of size 128×128 or 64×64 pixels. Superblocks can be divided in smaller blocks according to different partitioning patterns. The four-way split pattern is the only pattern whose partitions can be recursively subdivided. This allows superblocks to be divided into partitions as small as 4×4 pixels. «T-shaped» partitioning patterns are introduced, a feature developed for VP10, as well as horizontal or vertical splits into four stripes of 4:1 and 1:4 aspect ratio. The available partitioning patterns vary according to the block size, both 128×128 and 8×8 blocks can’t use 4:1 and 1:4 splits. Moreover, 8×8 blocks can’t use «T» shaped splits. Two separate predictions can now be used on spatially different parts of a block using a smooth, oblique transition line (wedge-partitioned prediction). This enables more accurate separation of objects without the traditional staircase lines along the boundaries of square blocks. More encoder parallelism is possible thanks to configurable prediction dependency between tile rows (ext_tile).
AV1 performs internal processing in higher precision (10 or 12 bits per sample), which leads to compression improvement due to smaller rounding errors in reference imagery. Predictions can be combined in more advanced ways (than a uniform average) in a block (compound prediction), including smooth and sharp transition gradients in different directions (wedge-partitioned prediction) as well as implicit masks that are based on the difference between the two predictors. This allows combination of either two inter predictions or an inter and an intra prediction to be used in the same block.
AV1 has new optimized quantization matrices (aom_qm).
Firefox (since version 67.0, May 2019; enabled by default on all desktop platforms — Windows, macOS and Linux for both 32-bit and 64-bit systems).
Google Chrome (since version 70, October 2018).
Opera (since version 57, 28 November 2018).
Microsoft Edge (since Windows 10 October 2018 Update (1809) with AV1 Video Extension add-on).
AV1 is an open, royalty-free video standard with an improved compression system that should allow huge data efficiency savings without reducing video quality – and that could be key going forward into a world of higher frame rates, 8K resolution, HDR standards and audio demands. As such, AV1 brings implications for those who use services such as Netflix, Disney Plus and Prime Video; people looking to buy a new TV or media streamer; and anyone interested in 8K TV. And as a catch-all compression standard there are many uses beyond, including gaming, realtime applications such as video conferencing and anything else where video streams are required.
If you want a cutting edge, next generation codec and are limited by licensing and bandwidth costs, AV1 is the way to go for you. On the other hand, if you want to support the most available (resource limited/ mobile) devices or have a need for real-time, low latency encoding, it would be better to stick to H.265(HEVC) for the time being.
Run only 1 active instance of the program!
Current file has its own status in the list: «running», «done» and «saved space».
1. Number of optimized files (total and current session).
2. Files in the queue (quantity).
3. Saved disk space (Mb) total and for each file in the list.
(You need to save files «res\size.txt» and «res\numbers.txt» before updating, if you want to save the overall statistics («Total»)).
You can specify the path to the file «ffmpeg.exe» manually in a separate form.
Please send any bugs and requests to firstname.lastname@example.org whith subject «Ultra7z Video Converter»
It’ free for commercial and non-commercial use!
More info about AV1
Program uses FFmpeg for conversion. More info about FFmpeg
If you like my program and you want help improve it, you can help me (donate) here.
Icon made by Freepik from Flaticon.com
2022-02-04 — 1.02
— update FFMPEG 2022-01-22 (faster AV1 encoding and other)
— added VP9/VP8/Xvid
— added option «Resize video»
— added option «Convert video to audio only» (to MP3, OPUS, OGG, FLAC, AAC, WAV)
— fix freezing for video without audio
2021-03-08 — 1.01
— first release