Native AMD AMF encoder - test build 4 (HEVC drop fix)

Native AMD AMF encoder — tester build 4

Targets the HEVC frame-drop issue reported on RDNA4 (RX 9070 XT) at high resolution.

New since test build 3

• HEVC: dropped the forced periodic keyframe; uses gradual intra-refresh instead. HEVC was emitting a full keyframe about once a second (a leftover RDNA4 encoder-refresh workaround). At high resolution that large frame spikes the encoder's input queue and drops frames — which is why HEVC was unplayable on the 9070 XT while AV1 stayed smooth. Keyframes are now client-driven (initial frame + packet-loss recovery), and the encoder state is kept fresh with a rolling band of intra blocks that refreshes the whole frame over ~1s, with no single large frame. AV1 is unchanged (it already worked this way).

  If you're on RDNA4 and HEVC was dropping frames, this is the build to test. AV1 remains the safe pick either way.

Everything from the earlier builds is included — the opt-in tuning knobs, the log-spam fix, and the latency-stats timestamp fix.

Install

Grab VibepolloSetup.exe (or the .msi) below. Back up your config first. Check the log for Found ... encoder: ..._amf [amdvce] to confirm the native path is active.

Especially want HEVC results from RDNA4, plus anything from RDNA2 / older cards and APUs.