NAB/IABM Game-Changer Award-Winning Viarte Technology
Stunning SDR to HDR Up-Conversion New!
Vivid HDR to SDR+ Tone Mapping

Cinema-Quality UHD/4K/HD/SD MC Standards Conversion
HDR/SDR Noise Reduction
Significant HEVC Bitrate Reduction Up to 5x!




Server Clusters:
Viarte HDR to SDR+ Tone Mapping | SDR to HDR Up-Conversion |
MC Standards Conversion | Digital Remastering | Encoding


Viarte is the industry-first stream-based vivid HDR to SDR tone mapping | digital remastering | standards conversion | transcoding server cluster. Stream-based file processing is a superset of file-based, but advances further by reducing latency significantly while keeping all of file-based advantages, especially flexibility. Viarte takes full advantages of Nvidia® CUDA technology for massive GPU parallelism, built from the ground-up with isovideo's several best-in-class processing technologies, including our latest breakthrough quality HDR/SDR motion-compensated (MC) noise reduction, now with a new capability to accept and process HDR video (10-bit or higher) for 10-bit HEVC/AVC encoding, and can shrink HEVC/AVC upto 5x for the same PSNR or better.

The latest Viarte SDR-to-HDR inverse tone mapping provides a solution for content creators and service distributors to up-convert legacy 8/10-bit Rec709 SDR content to HDR. For example, this includes conversion to ST2084 at 1000 nits, or HLG at 1200 nits, with BT2020 color. It allows legacy SDR material to be rapidly converted to stunning HDR. The results are fully compliant with the latest Rec. ITU-R BT.2100-0.

The new advanced Viarte HDR to SDR tone mapping allows HDR production to leverage current video distribution infrastructure for a genuinely improved SDR+ viewing impact on any existing SDR display device, from TVs to cell phone, including current Cinema projection systems. Our state-of-the-art splitting technology allow efficient Viarte deployment in the Cloud, achieving significant improvement of IP-studio workflow efficiency and automation.

Combined with its unique architecture, Viarte embraces an unparalleled capacity to achieve low-delay, high-throughput, highest quality HDR/SDR 4k/UHD/HD/SD content transformation on streams or files. New HDR productions can immediately reach widespread SDR audiences for a SDR+ viewing experience, and with minimal additional capital expenditure for distribution, while content is future-proof and ready for the newer generations of HDR displays to take hold.

Viarte was one of five prestigious winners of the 2013 IABM/NAB Game-Changer Awards. isovideo is honored to be a part of IABM's 40th Anniversary Publication (section: "Award Winners through the years"), and was credited for footage conversion in Ron Howard's "Made in America".

Software-Defined Video Processing Technologies:

All of our software runs on Linux x86_64 servers with multi-threaded CPU processing, and up to eight GPUs. The yuv4mpeg2 standard allows simple interoperability with excellent free tools like x264, ffmpeg , avconv, and mplayer when using pipes. isovideo tools now also support an extended yuv4mpeg2 I/O format, allowing piped data to flow between them with up to 15 effective bits representing each Y,Cb,Cr component. All tools use at least 32-bit arithmetic for all internal signal processing calculations.

The heading-links below give complete information about each technology.

Legato Motion-Compensated Frame Rate Converter |
Motion Interpolator


Legato uses CUDA technology for motion-compensated FRC to achieve smooth playback without duplicating or dropping frames. Legato can convert any frame rate to any other rate, allowing fast conversion between 24p, 50p and 60p, and can use exact rates like 60000/1001. It can create slow-motion effects, and perform temporal resampling in order to fit material to time slots. Visit here to see the best picture quality of any frame rate converter. It can also perform 444, 422, 420paldv, 420mpeg, 420jpeg chroma sampling conversions.

Legato can apply motion blur to achieve smoother playback at lower frame rates like 24 frames/second. Motion blur is controlled by setting an output shutter angle in degrees. Alternatively, you can use our automated blur analysis mode to let it dynamically adjust to reduce judder based on image content.

Demeler Motion-Compensated Deinterlacer


Demeler performs full motion-compensated deinterlacing in real time. It can automatically handle any combination of 2:3 pulldown, interlaced, and PsF.

An objective measure of deinterlacing quality compares the sizes of x264-compressed files using (i) interlaced MBAFF coding and (ii) deinterlaced progressive coding, adjusted for the same SNR. Demeler reduces x264 compressed bitrates by 21.3% on average. If Demeler output is archived with lossless compression, the original interlaced fields can be recovered losslessly using meler. Demeler makes it totally unnecessary to compress, distribute or archive interlaced video!

Rescape Video Scaler/Rotator


Rescape scales progressive video between any frame sizes. It uses CUDA technology for realtime scaling if the appropriate cards are installed. It can reduce frame sizes to suit the target display device prior to video compression. This reduces streaming bandwidth to mobile devices, and eliminates further scaling computation, which reduces mobile power consumption.

Rescape scales from SD, HD to UHD/4K/8K with much sharper results than the scalers built-in to graphics cards. It can perform 444, 422, 420paldv, 420mpeg, 420jpeg chroma sampling conversions.

Meler Interlacer


Meler performs various progressive to interlace conversions. It does not use GPU acceleration. It can vertically filter prior to interlacing in order to reduce interlace aliasing artifacts on particularly difficult material.

It can generate top-field-first, bottom-field-first, pulldown, advanced pulldown, fields-as-frames, and can perform 444, 422, 420paldv, 420mpeg, 420jpeg chroma sampling conversions. It can be used for lossless extraction of the original interlaced video from video deinterlaced by Demeler.