This post is about how to compile VMAF with CUDA support and run the filter from FFMPEG. The entire compilation process has been tested on Ubuntu 25.15, without using Docker and with a minimum of pre-built libraries. Install compilation tools and required libraries: sudo apt install autoconf automake build-essential yasm cmake git-core unzip libtool wget […]
Read MoreA colleague raised a question — how does the Pi 4 actually encode? A question asked — an answer must be given. 🙂 I borrowed one from him for analysis for a while . Frankly speaking, the processor is quite slow. But that’s not surprise, since enthusiasts don’t require much computing power for their projects […]
Read MoreAt the moment the following data is collected and available in the codec quality comparison database: https://vmetrix.tech:3000/dashboards The cells contain preset name and low latency or high quality use case mark. In case of libaom-av1 it’s “-cpu-used” parameter value stated. Hardware codecs Hardware H.264 HEVC AV1 NVIDIA RTX A4000 Low Latency p1 Low Latency p1 […]
Read MoreSo, I finally get to a Rockchip. I must say this hardware is highly ambiguous, with plenty of issues but no fewer merits. I bought it for video encoding, surely. Unexpectedly, it has turned into a permanent member of my home lab. If you compare the overall CPU performance, for example, with the BCM2712 (Raspberry […]
Read MoreBDBR stands for Bjontegaard Delta Bitrate. If you have ever engaged in video coding quality analysis and compared different codecs, you have likely used rate-distortion or RD curves. Since the X-axis represents bitrate values and the Y-axis represents a quality metric, a higher curve indicates the codec encodes with higher quality at the same bitrate. […]
Read MoreLet’s examine how Intel encodes on modern graphics cards. My previous experience was entirely unimpressive, starting from building the source code and preparing for encoding in general. An embarrassingly large amount of time was spent on what seemed like a simple task. We even had to involve system programmers just to even get MFX working. […]
Read MoreWell, it’s time to write the first post! What this resource is about. As you might easily guess, it’s about comparing the quality of video codecs. On various forums and discussions, I often hear questions like, “I encoded a video using AV1, but the file ended up larger than the one compressed with H.264. Where […]
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