X HEVC Encoder 1.3

Version 1.3 adds resolution scaling, frame rate conversion, x265 tune presets and a VBV bitrate cap for streaming, turning what was already a clean front-end for six different HEVC back-ends into a complete export tool you can use end-to-end without touching FFmpeg syntax.

Where X HEVC Encoder Sits in the Pipeline

HEVC encoding on Windows is rarely a single program - it is a workflow.

A decoder reads the source file, an encoder compresses it to H.265, and a muxer writes the final container.

X HEVC Encoder occupies the middle stage: it takes the video frames decoded by FFmpeg, passes them to whichever H.265 encoder you choose, and hands the result back to FFmpeg for muxing into MP4 or MKV.

That design is why the download is so small. The encoders and the FFmpeg binary are not bundled - you supply them.

FFmpeg is the only hard requirement, and the static Windows build available from the FFmpeg download page on codecs.com covers libx265, FFprobe and every container format the GUI needs in a single executable.

If FFmpeg is new to you, the How do I install and use ffmpeg on Windows guide walks through placing the binary on the system PATH so X HEVC Encoder can find it on launch.

Six Encoder Back-Ends in One Front-End

The reason a GUI like this exists is that the HEVC ecosystem is fragmented. Software encoders give the best quality per bitrate but are slow.

Hardware encoders are five to ten times faster but produce larger files at the same setting.

Different licences, different command-line syntax, different defaults. X HEVC Encoder auto-detects what is available on your machine and exposes all of it through one dropdown:

• libx265 via FFmpeg - the most widely used HEVC software encoder, ideal for archival quality. The latest 4.2 release covered in x265 4.2 Lands With Threaded Motion Estimation and 8K-Ready Levels is the version most current FFmpeg builds ship with.
• x265 CLI - the standalone build, slightly faster than libx265 with more direct parameter control. Available from the x265 Codec page on codecs.com.
• Kvazaar - the open-source BSD-licensed HEVC encoder from Tampere University, designed to scale well across many CPU cores. Get the latest build from Kvazaar on codecs.com.
• NVIDIA NVENC - hardware encoding on Maxwell-and-later GPUs, very fast.
• AMD AMF - hardware encoding on RX 400 and later cards.
• Intel QSV - hardware encoding from Skylake onward, particularly battery-friendly on laptops.

The hardware encoders need no separate download - they ship with your GPU driver and are activated automatically as soon as X HEVC Encoder detects a compatible card at launch.

Output Transforms - New in 1.3

Version 1.3 adds an Output transform panel that handles the things most users previously had to chain a second tool for.

Resolution scaling resizes the output to 4K, 1440p, 1080p, 720p, 480p or a custom width and height using lanczos filtering, which is the right choice for HEVC because it preserves the high-frequency detail that the encoder will then compress efficiently.

Frame rate conversion drops the source to 60, 50, 30, 25 or 24 fps - useful for trimming a 60 fps recording down to a 30 fps deliverable without re-importing into a separate editor.

The x265 tune presets are the other quietly important addition. Tune grain preserves film grain texture during compression and is the right choice for live-action footage shot on cameras with sensor noise. Tune fastdecode produces files that decode with less CPU, useful for low-power playback devices.

Tune zerolatency strips the look-ahead frames that boost quality but introduce buffering, making it the streaming and live-capture choice. Tune animation favours the flat colour fields and hard edges typical of cartoons and rendered content.

The VBV bitrate cap is the feature that turns the 1.3 release into a streaming-grade encoder.

Setting Max bitrate to 6000 kbps for Twitch at 1080p60, 8000 to 12000 for YouTube 1080p, or 35000 to 45000 for YouTube 4K, ensures that no single segment of the video exceeds the platform's ingest limit.

Buffer size defaults to twice the Max bitrate when blank - a sensible default that matches what most streaming platforms expect.

Use-Case Presets That Actually Make Sense

Most encoder front-ends drown the user in technical sliders. X HEVC Encoder takes the opposite approach with six presets that pre-configure CRF, preset speed and profile for the situation you are actually in. Archival starts at CRF 20 with the slow preset for visually lossless masters.

Streaming defaults to CRF 28 with medium speed for delivery files. HDR/4K switches to Main10, enables HDR metadata passthrough and keeps the slow preset for maximum quality. Web/Social, Blu-ray and Mobile fill in the rest.

You can still edit the FFmpeg command directly before encoding starts - the GUI shows the exact command it is about to run, which is unusual transparency for a graphical tool and welcome for anyone troubleshooting an encode.

Settings Persistence and Stability Fixes

Version 1.3 also adds settings persistence. The encoder, CRF, preset, profile, format and last-used folders are now saved to %APPDATA%\xcodecpack\hevc and restored on the next launch.

For users who have a preferred archival recipe or a fixed streaming target, this means setting it up once instead of reconfiguring on every session.

The release also resolves an internal error that previously caused encoding to fail immediately when the FFmpeg subprocess emitted its first output line - a crash that affected a small subset of FFmpeg builds and is now patched.

HDR10 and 10-Bit Handled Correctly

HDR encoding is where most casual GUIs fall apart. X HEVC Encoder reads the source through FFprobe, suggests Main10 profile automatically when it detects an HDR flag, and passes through the colorprimaries, transfer function and color matrix metadata so the result actually displays correctly on an HDR TV or monitor.

For 4K HDR work the recommendation is libx265 or the standalone x265 CLI - hardware encoders are faster, but the quality gap at high bitrates is visible on a calibrated display.

After Encoding - Playback on Windows

A H.265 file is only useful if Windows can play it. The Movies & TV app and Windows Media Player need Microsoft's HEVC codec, available as HEVC Video Extensions on codecs.com - the free OEM build that does not require a Microsoft Store purchase.

If you would rather skip the Windows codec entirely, any of the players covered in the Best HEVC Video Players 2026 guide handle H.265 with their own bundled decoders.

For remuxing the encoded file into a different container without re-encoding, MKVToolNix is the standard choice and pairs naturally with X HEVC Encoder for any post-encode container work.

If you also work with the other modern codecs, the AV1 Video Extension and VP9 Video Extension cover HEVC's two main competitors at the playback layer.

Software vs Hardware - Picking the Right Back-End

The honest summary is that libx265 and x265 CLI produce the best quality per bitrate and are the right choice for anything you intend to keep long-term.

Kvazaar sits a step behind on quality but is a strong pick if you specifically need a permissively licensed open-source encoder, or want to compare encoder output for a project.

NVENC, AMF and QSV are five to ten times faster and excellent for quick exports, captured gameplay, surveillance footage or anything where encode time matters more than the last few percent of compression efficiency. X HEVC Encoder makes switching between all six a single-click decision rather than a research project.

For users who want a more traditional batch-converter experience with GPU acceleration baked in and a wider range of input formats, MediaCoder is a free alternative worth bookmarking - it trades the transparency of an editable FFmpeg command for a more conventional one-button UI.

If your workflow involves converting older Xvid files into modern HEVC for the same library, the Convert Xvid Files to MP4 Free guide covers the source-side work before you bring the file into X HEVC Encoder for the H.265 pass.

What's New in Version 1.3

The 1.3 release brings the front-end up to streaming-grade with three feature additions and one stability fix.

The Output transform panel adds resolution scaling (4K through 480p plus custom W x H using lanczos), frame rate conversion (60/50/30/25/24 fps), x265 tune presets (grain, fastdecode, zerolatency, animation) and a VBV max bitrate cap that takes -maxrate and -bufsize values for streaming-bound encodes.

Settings persistence saves the encoder choice, CRF, preset, profile, format and last-used folders to %APPDATA%\xcodecpack\hevc so the next launch starts where you left off. And an internal crash that affected a subset of FFmpeg builds when encoding started has been resolved.

Download

X HEVC Encoder 1.3 is freeware, runs on Windows 7, 8, 10 and 11, requires FFmpeg installed alongside it, and ships as a single portable .exe with no installer.