diff --git a/tools/chatgui/ffmpeg/tests/test_amf_live_qp.c b/tools/chatgui/ffmpeg/tests/test_amf_live_qp.c
new file mode 100644
index 00000000..047a9fda
--- /dev/null
+++ b/tools/chatgui/ffmpeg/tests/test_amf_live_qp.c
@@ -0,0 +1,66 @@
+/* Проверка патча FFmpeg 7.1.2 без GPU: настоящий receive_packet и AMF SetProperty на границе драйвера.
+ * AllocSurface намеренно возвращает OOM после установки QP. Проверяем применение, отсутствие повторных
+ * установок и повтор после отказа драйвера. Собирать с include/source и статическими библиотеками patched FFmpeg. */
+#include <assert.h>
+#include <wchar.h>
+#include "libavcodec/amfenc.h"
+#include "libavutil/opt.h"
+
+static unsigned updates, allocations;
+static const wchar_t* rejected;
+static int expected;
+
+static AMF_RESULT AMF_STD_CALL set_property(AMFComponent* component, const wchar_t* name, AMFVariantStruct value) {
+    (void)component;
+    assert(value.type == AMF_VARIANT_INT64 && value.int64Value == expected);
+    assert(!wcscmp(name, AMF_VIDEO_ENCODER_MAX_QP) || !wcscmp(name, AMF_VIDEO_ENCODER_HEVC_MAX_QP_I)
+        || !wcscmp(name, AMF_VIDEO_ENCODER_HEVC_MAX_QP_P));
+    ++updates;
+    return rejected && !wcscmp(name, rejected) ? AMF_FAIL : AMF_OK;
+}
+
+static AMF_RESULT AMF_STD_CALL alloc_surface(AMFContext* context, AMF_MEMORY_TYPE memory, AMF_SURFACE_FORMAT format,
+                                           amf_int32 width, amf_int32 height, AMFSurface** surface) {
+    (void)context; (void)memory; (void)format; (void)width; (void)height; (void)surface;
+    ++allocations; return AMF_OUT_OF_MEMORY;
+}
+
+static void check_encoder(const char* name, int properties) {
+    const AVCodec* codec = avcodec_find_encoder_by_name(name); assert(codec);
+    AVCodecContext* context = avcodec_alloc_context3(codec); assert(context);
+    AmfContext* amf = context->priv_data;
+    int64_t initial = 0;
+    assert(av_opt_get_int(amf, "utun_qp_max", 0, &initial) == 0 && initial == -1);
+    AMFComponentVtbl component_vtable = {.SetProperty = set_property};
+    AMFComponent component = {.pVtbl = &component_vtable};
+    AMFContextVtbl context_vtable = {.AllocSurface = alloc_surface};
+    AMFContext driver = {.pVtbl = &context_vtable};
+    amf->encoder = &component; amf->context = &driver; amf->utun_qp_applied = -1;
+    amf->delayed_frame = av_frame_alloc(); assert(amf->delayed_frame);
+    amf->delayed_frame->buf[0] = av_buffer_alloc(1); assert(amf->delayed_frame->buf[0]);
+    amf->delayed_frame->format = AV_PIX_FMT_NV12;
+    AVPacket* packet = av_packet_alloc(); assert(packet);
+    updates = allocations = 0; rejected = NULL; expected = 28;
+    assert(av_opt_set_int(amf, "utun_qp_max", expected, 0) == 0);
+    assert(ff_amf_receive_packet(context, packet) == AVERROR(ENOMEM));
+    assert(updates == properties && amf->utun_qp_applied == 28 && allocations == 1);
+    assert(ff_amf_receive_packet(context, packet) == AVERROR(ENOMEM));
+    assert(updates == properties && allocations == 2);
+    expected = 29; assert(av_opt_set_int(amf, "utun_qp_max", expected, 0) == 0);
+    assert(ff_amf_receive_packet(context, packet) == AVERROR(ENOMEM));
+    assert(updates == properties * 2 && amf->utun_qp_applied == 29 && allocations == 3);
+    rejected = properties == 1 ? AMF_VIDEO_ENCODER_MAX_QP : AMF_VIDEO_ENCODER_HEVC_MAX_QP_P;
+    expected = 30; assert(av_opt_set_int(amf, "utun_qp_max", expected, 0) == 0);
+    assert(ff_amf_receive_packet(context, packet) == AVERROR_EXTERNAL);
+    assert(amf->utun_qp_applied == 29 && allocations == 3);
+    rejected = NULL;
+    assert(ff_amf_receive_packet(context, packet) == AVERROR(ENOMEM));
+    assert(updates == properties * 4 && amf->utun_qp_applied == 30 && allocations == 4);
+    av_packet_free(&packet); av_frame_free(&amf->delayed_frame);
+    amf->encoder = NULL; amf->context = NULL; avcodec_free_context(&context);
+    av_log(NULL, AV_LOG_INFO, "Live QP native boundary passed: %s\n", name);
+}
+
+int main(void) {
+    check_encoder("h264_amf", 1); check_encoder("hevc_amf", 2); return 0;
+}