diff --git a/tools/chatgui-android/app/src/main/java/com/utun/chat/data/CallVideoNative.kt b/tools/chatgui-android/app/src/main/java/com/utun/chat/data/CallVideoNative.kt
index 3270bbc1..4bf4f3b9 100644
--- a/tools/chatgui-android/app/src/main/java/com/utun/chat/data/CallVideoNative.kt
+++ b/tools/chatgui-android/app/src/main/java/com/utun/chat/data/CallVideoNative.kt
@@ -2,6 +2,7 @@ package com.utun.chat.data
 
 /** Тот же C port, что у desktop: один TX mailbox, ограниченный RX, идентификатор звонка в каждой операции. */
 internal object CallVideoNative {
+    init { System.loadLibrary("utun") }
     external fun open(id: Long, caps: ByteArray): Boolean
     external fun close(id: Long)
     external fun peer(id: Long): ByteArray?
@@ -13,12 +14,14 @@ internal object CallVideoNative {
     external fun pull(id: Long, meta: LongArray): ByteArray?
     external fun requestKey(id: Long)
     external fun range(id: Long, minimum: Int, maximum: Int): Boolean
+    external fun inspect(codec: Int, bytes: ByteArray): LongArray?
+    external fun supported(local: ByteArray, peer: ByteArray, format: LongArray): Boolean
 }
 
 internal data class CallVideoFormat(val generation: Long, val width: Int, val height: Int, val fps: Int = 30,
-    val rotation: Int = 0, val codec: Int = 0, val level: Int = 0, val maximum: Int = 4_000_000, val vbv: Int = 1_000_000) {
+    val rotation: Int = 0, val codec: Int = 0, val level: Int = 0, val maximum: Int = 4_000_000, val profile: Int = 0) {
     fun array() = longArrayOf(generation, width.toLong(), height.toLong(), fps.toLong(), rotation.toLong(), codec.toLong(),
-        level.toLong(), maximum.toLong(), vbv.toLong())
+        level.toLong(), maximum.toLong(), profile.toLong())
     companion object {
         fun from(a: LongArray) = CallVideoFormat(a[0], a[1].toInt(), a[2].toInt(), a[3].toInt(), a[4].toInt(),
             a[5].toInt(), a[6].toInt(), a[7].toInt(), a[8].toInt())
diff --git a/tools/chatgui-android/jni_bridge/android_call_video_jni.c b/tools/chatgui-android/jni_bridge/android_call_video_jni.c
index 5135abd6..22c77821 100644
--- a/tools/chatgui-android/jni_bridge/android_call_video_jni.c
+++ b/tools/chatgui-android/jni_bridge/android_call_video_jni.c
@@ -2,10 +2,11 @@
 #include <jni.h>
 #include <string.h>
 #include "../../../src/call/call_video_port.h"
+#include "../../../src/call/call_video_bitstream.h"
 #include "../../../lib/debug_config.h"
 #include "../../../lib/mem.h"
 
-/* LongArray format: generation,width,height,fps,rotation,codec,level,maximum_bps,vbv_bits.
+/* LongArray format: generation,width,height,fps,rotation,codec,level,maximum_bps,profile.
  * Frame metadata добавляет frame_id,pts_us,flags. JNI не хранит заимствованные массивы. */
 static int read_format(JNIEnv *e, jlongArray array, struct call_video_format *f, jlong values[12], int frame) {
     if (!array || (*e)->GetArrayLength(e, array) != (frame ? 12 : 9)) goto invalid;
@@ -14,7 +15,7 @@ static int read_format(JNIEnv *e, jlongArray array, struct call_video_format *f,
     if (values[0] <= 0 || values[1] < 16 || values[1] > 4096 || values[2] < 16 || values[2] > 4096
         || values[3] < 1 || values[3] > 60 || values[4] < 0 || values[4] > 270 || values[4] % 90
         || values[5] < 0 || values[5] > 2 || values[6] < 0 || values[6] > 255
-        || values[7] < 300000 || values[7] > 4000000 || values[8] < 1 || values[8] > 16000000) goto invalid;
+        || values[7] < 300000 || values[7] > 4000000 || values[8] < 0 || values[8] > 2) goto invalid;
     *f = (struct call_video_format){values[0], values[1], values[2], values[3], values[4], values[5], values[6], values[7], values[8]};
     return 0;
 invalid:
@@ -53,7 +54,7 @@ JNIEXPORT jlongArray JNICALL Java_com_utun_chat_data_CallVideoNative_choose(
     (void)o; struct call_video_caps sender, receiver; struct call_video_format f; jlong values[12];
     if (read_caps(e, local, &sender) || read_caps(e, remote, &receiver) || read_format(e, desired, &f, values, 0)
         || call_video_choose(&sender, &receiver, &f) <= 0) return NULL;
-    values[5] = f.codec; values[6] = f.level;
+    values[5] = f.codec; values[6] = f.level; values[8] = f.profile;
     jlongArray out = (*e)->NewLongArray(e, 9); if (out) (*e)->SetLongArrayRegion(e, out, 0, 9, values); return out;
 }
 JNIEXPORT jboolean JNICALL Java_com_utun_chat_data_CallVideoNative_format(
@@ -84,7 +85,7 @@ JNIEXPORT jbyteArray JNICALL Java_com_utun_chat_data_CallVideoNative_pull(JNIEnv
     struct call_video_frame f;
     if (call_video_port_pull(id, &f) != 1) return NULL;
     jlong values[] = {f.format.generation, f.format.width, f.format.height, f.format.fps, f.format.rotation,
-        f.format.codec, f.format.level, f.format.maximum_bps, f.format.vbv_bits, f.frame_id, f.pts_us, f.flags};
+        f.format.codec, f.format.level, f.format.maximum_bps, f.format.profile, f.frame_id, f.pts_us, f.flags};
     jbyteArray out = (*e)->NewByteArray(e, f.size);
     if (out) { (*e)->SetByteArrayRegion(e, out, 0, f.size, (jbyte *)f.data); (*e)->SetLongArrayRegion(e, meta, 0, 12, values); }
     else call_video_port_request_key(id);
@@ -96,4 +97,23 @@ JNIEXPORT void JNICALL Java_com_utun_chat_data_CallVideoNative_requestKey(JNIEnv
 JNIEXPORT jboolean JNICALL Java_com_utun_chat_data_CallVideoNative_range(JNIEnv *e, jobject o, jlong id, jint minimum, jint maximum) {
     (void)e; (void)o; return !call_video_port_range(id, minimum, maximum);
 }
+JNIEXPORT jlongArray JNICALL Java_com_utun_chat_data_CallVideoNative_inspect(JNIEnv *e, jobject o, jint codec, jbyteArray bytes) {
+    (void)o;
+    if (!bytes) return NULL;
+    jsize size = (*e)->GetArrayLength(e, bytes);
+    if (size < 9 || size > CALL_VIDEO_MAX_FRAME) { DEBUG_WARN(DEBUG_CATEGORY_CALL, "video inspect JNI size=%d", size); return NULL; }
+    jbyte *data = (*e)->GetByteArrayElements(e, bytes, NULL); if (!data) return NULL;
+    struct call_video_bitstream s;
+    int result = call_video_inspect_key(codec, (uint8_t *)data, size, &s);
+    (*e)->ReleaseByteArrayElements(e, bytes, data, JNI_ABORT);
+    if (result) return NULL;
+    jlong values[] = {s.width, s.height, s.level, s.profile, s.dpb};
+    jlongArray out = (*e)->NewLongArray(e, 5); if (out) (*e)->SetLongArrayRegion(e, out, 0, 5, values); return out;
+}
+JNIEXPORT jboolean JNICALL Java_com_utun_chat_data_CallVideoNative_supported(
+    JNIEnv *e, jobject o, jbyteArray local, jbyteArray remote, jlongArray array) {
+    (void)o; struct call_video_caps sender, receiver; struct call_video_format f; jlong values[12];
+    return !read_caps(e, local, &sender) && !read_caps(e, remote, &receiver) && !read_format(e, array, &f, values, 0)
+        && call_video_format_supported(&sender, &receiver, &f);
+}
 #endif