diff --git a/tools/chatgui/src/live_video_encoder.cpp b/tools/chatgui/src/live_video_encoder.cpp
index b30d9483..0e0a6284 100644
--- a/tools/chatgui/src/live_video_encoder.cpp
+++ b/tools/chatgui/src/live_video_encoder.cpp
@@ -17,6 +17,7 @@ extern "C" {
 struct LiveVideoEncoder::Impl {
     QString error, name;
     LiveVideoConfig config;
+    int64_t submittedFrames = 0;
 #ifdef HAVE_FFMPEG
     AVCodecContext* codec = nullptr;
     AVBSFContext* filter = nullptr;
@@ -258,12 +259,18 @@ bool LiveVideoEncoder::open(const LiveVideoConfig& config, Backend backend) {
                         name.constData(), qPrintable(m->error));
                     break;
                 }
-                output.clear();
-                const uint64_t forcedKeyPts = (1000000 / config.fps) * (maxDelayFrames + 2);
-                if (!probeKey(forcedKeyPts, output)) {
-                    DEBUG_WARN(DEBUG_CATEGORY_VIDEO, "desktop encoder forced KEY probe failed name=%s error=%s",
-                        name.constData(), qPrintable(m->error));
-                    break;
+                if (name.endsWith("_amf")) {
+                    DEBUG_INFO(DEBUG_CATEGORY_VIDEO,
+                        "desktop AMF uses periodic IDR name=%s gop_frames=%d forced_key_requests=disabled",
+                        name.constData(), c->gop_size);
+                } else {
+                    output.clear();
+                    const uint64_t forcedKeyPts = (1000000 / config.fps) * (maxDelayFrames + 2);
+                    if (!probeKey(forcedKeyPts, output)) {
+                        DEBUG_WARN(DEBUG_CATEGORY_VIDEO, "desktop encoder forced KEY probe failed name=%s error=%s",
+                            name.constData(), qPrintable(m->error));
+                        break;
+                    }
                 }
                 if (constrained && !verifiedProfile(config, output)) {
                     m->error = "Encoder output violates the requested profile"; break;
@@ -305,8 +312,12 @@ bool LiveVideoEncoder::encode(const QImage& image, uint64_t pts, bool key, QList
         int stride[4] = {static_cast<int>(canvas.bytesPerLine()), 0, 0, 0};
         result = sws_scale(m->scale, input, stride, 0, canvas.height(), m->frame->data, m->frame->linesize);
     }
-    m->frame->pts = static_cast<int64_t>(pts); m->frame->pict_type = key ? AV_PICTURE_TYPE_I : AV_PICTURE_TYPE_NONE;
-    if (key) m->frame->flags |= AV_FRAME_FLAG_KEY; else m->frame->flags &= ~AV_FRAME_FLAG_KEY;
+    bool forceKey = key && (!m->name.endsWith("_amf") || m->submittedFrames == 0);
+    if (key && !forceKey) DEBUG_DEBUG(DEBUG_CATEGORY_VIDEO,
+        "desktop AMF ignores forced key request; periodic GOP IDR remains active name=%s submitted=%lld",
+        qPrintable(m->name), (long long)m->submittedFrames);
+    m->frame->pts = static_cast<int64_t>(pts); m->frame->pict_type = forceKey ? AV_PICTURE_TYPE_I : AV_PICTURE_TYPE_NONE;
+    if (forceKey) m->frame->flags |= AV_FRAME_FLAG_KEY; else m->frame->flags &= ~AV_FRAME_FLAG_KEY;
     AVFrame* hardware = nullptr;
     if (result >= 0 && m->codec->hw_frames_ctx) {
         hardware = av_frame_alloc();
@@ -315,6 +326,7 @@ bool LiveVideoEncoder::encode(const QImage& image, uint64_t pts, bool key, QList
         if (result >= 0) result = av_frame_copy_props(hardware, m->frame);
     }
     if (result >= 0) result = avcodec_send_frame(m->codec, hardware ? hardware : m->frame);
+    if (result >= 0) m->submittedFrames++;
     av_frame_free(&hardware);
     AVPacket* packet = av_packet_alloc();
     if (!packet) result = AVERROR(ENOMEM);