diff --git a/flow-state/src/export/Exporter.js b/flow-state/src/export/Exporter.js
index fdf739c..ef137cc 100644
--- a/flow-state/src/export/Exporter.js
+++ b/flow-state/src/export/Exporter.js
@@ -123,18 +123,24 @@ async function pickVideoConfig(width, height, bitrate, fps) {
             const config = { codec: cand.codec, width, height, bitrate, framerate: fps };
             if (cand.avc) config.avc = cand.avc;
             let supported = false;
+            let negotiatedConfig = null;
             let negotiatedHardware = '';
             try {
                 const sup = await VideoEncoder.isConfigSupported(config);
                 supported = !!sup.supported;
-                negotiatedHardware = sup.config ? sup.config.hardwareAcceleration || '' : '';
+                negotiatedConfig = sup.config || null;
+                negotiatedHardware = negotiatedConfig ? negotiatedConfig.hardwareAcceleration || '' : '';
             } catch { supported = false; }
             attempted.push(`${family.muxerCodec}:${cand.codec}=${supported ? 'ok' : 'no'}`);
             if (!supported) continue;
-            // Found a supported profile — does it reorder? Baseline AVC never does;
-            // VP9/AV1 may, so we enforce the same test.
-            if (await emitsInPresentationOrder(config)) {
-                return { config, muxerCodec: family.muxerCodec, hardwareAcceleration: negotiatedHardware };
+            // Use the browser-negotiated config when available — it is guaranteed
+            // to satisfy VideoEncoderConfig validation (required fields, avc
+            // shape, etc). Chrome has started rejecting our minimal config with
+            // "not of type VideoEncoderConfig" even though isConfigSupported said
+            // "supported", while the negotiated config it returned configures fine.
+            const configToTest = negotiatedConfig || config;
+            if (await emitsInPresentationOrder(configToTest)) {
+                return { config: configToTest, muxerCodec: family.muxerCodec, hardwareAcceleration: negotiatedHardware };
             }
             reorderFailures.push(`${cand.codec}`);
         }
@@ -160,6 +166,7 @@ export async function probeExportCodec(width, height, bitrate, fps = 60) {
     const picked = await pickVideoConfig(width, height, bitrate, fps);
     if (!picked) return null;
     return {
+        config: picked.config,
         codec: picked.config.codec,
         muxerCodec: picked.muxerCodec,
         hardwareAcceleration: picked.hardwareAcceleration || '',
diff --git a/flow-state/src/main.js b/flow-state/src/main.js
index 5b2fab9..535808d 100644
--- a/flow-state/src/main.js
+++ b/flow-state/src/main.js
@@ -658,7 +658,7 @@ async function runExport(segment) {
         const exporter = new Exporter(state.show);
         const blob = segment
             ? await exportSegment(state.show, state.show.timeline.frame,
-                { seconds: 20, preset, onProgress: exportProgress, exporter })
+                { seconds: 20, preset, onProgress: exportProgress, exporter, videoPick: pick })
             : await exporter.export({ preset, onProgress: exportProgress, videoPick: pick });
 
         const suffix = segment ? `-segment-${state.show.timeline.frame}` : '';