If you’ve ever stared at a stalled HandBrake progress bar while transcoding a giant video file, wondering why your expensive multi-core CPU wasn’t doing much, you weren’t imagining it. AMD just confirmed there was a real bottleneck hiding inside the popular open-source transcoder — and it’s now fixed for everyone.

The Problem Nobody Noticed (Until Now)

HandBrake is one of the most widely used free tools for converting and compressing video, but its thread management hadn’t kept pace with modern high-core-count processors. AMD’s engineers discovered that on chips with more than 64 logical processors, the software simply couldn’t put all that horsepower to use efficiently.

Worse, in certain workloads — especially lower-resolution clips like 720p — HandBrake was splitting jobs into pieces so small that the CPU spent more time organizing the work than actually doing it. The end result was bizarre: adding more cores sometimes made things slower, with performance dipping by as much as 60% in some test cases instead of scaling up.

What AMD Actually Changed

Rather than patch this quietly on the side, AMD’s team rewrote how HandBrake schedules and distributes transcoding work across cores, then contributed the fix directly to the open-source HandBrake project. It’s now baked into the official release — no special builds, no workarounds, no new settings to learn. Anyone running HandBrake 1.11.0 or later automatically gets the benefit.

The Numbers: Before vs After

Test System	GPU Paired	Peak Performance Gain
Threadripper PRO 9995WX (96-core)	Radeon RX 9070 XT	Up to 181% (2.81x faster)
Threadripper 7980X (64-core HEDT)	Radeon RX 9070 XT	Up to 215% (3.15x faster)

The single biggest jump came from a 720p H.264 test clip, which saw a 215% improvement on the 64-core Threadripper system. Heavy 8K HEVC workloads also saw triple-digit gains, proving the fix wasn’t just a niche edge case — it touched a wide range of real-world encoding scenarios.

To keep the comparison fair, AMD benchmarked against an older HandBrake version specifically chosen to avoid mixing in unrelated encoder preset changes, isolating the credit squarely on the threading fix itself.

Why This Actually Matters

For video editors, content creators, and anyone batch-converting large libraries, this isn’t a minor tweak — it’s the difference between an overnight render queue and one that finishes before lunch. High-core-count workstations are built for exactly this kind of workload, and a scheduling bug quietly wasting half your CPU’s potential is the last thing you want when deadlines are tight.

It’s also a nice example of hardware makers giving back to open-source software instead of just shipping marketing slides. For more breakdowns of how hardware vendors are shaping creator workflows, check out TechnoSports’ tech coverage for similar deep dives.

If you want to read more about the transcoder itself, HandBrake has a detailed overview on Wikipedia covering its history and supported formats.

How to Get the Speed Boost

There’s genuinely nothing complicated here. Update to HandBrake 1.11.0 or newer, and if you’re running a Threadripper or Threadripper PRO system, you should immediately notice snappier transcodes — particularly on demanding 4K and 8K HEVC projects.