Backported AVFoundation fixes from master branch

modules/videoio/src/cap_mfx_writer.cpp

@@ -40,6 +40,12 @@ VideoWriter_IntelMFX::VideoWriter_IntelMFX(const String &filename, int _fourcc,
         return;
     }
 
+    if (fps <= 0)
+    {
+        MSG(cerr << "MFX: Invalid FPS passed to encoder" << endl);
+        return;
+    }
+
     // Init device and session
     deviceHandler = createDeviceHandler();
     session = new MFXVideoSession();

modules/videoio/test/test_mfx.cpp

@@ -35,7 +35,7 @@ TEST(Videoio_MFX, write_invalid)
     ASSERT_NO_THROW(res = writer.open(String(), CAP_INTEL_MFX, VideoWriter::fourcc('H', '2', '6', '4'), 1, Size(640, 480), true));
     EXPECT_FALSE(res);
     EXPECT_FALSE(writer.isOpened());
-    ASSERT_ANY_THROW(res = writer.open(filename, CAP_INTEL_MFX, VideoWriter::fourcc('H', '2', '6', '4'), 0, Size(640, 480), true));
+    ASSERT_NO_THROW(res = writer.open(filename, CAP_INTEL_MFX, VideoWriter::fourcc('H', '2', '6', '4'), 0, Size(640, 480), true));
     EXPECT_FALSE(res);
     EXPECT_FALSE(writer.isOpened());
 

modules/videoio/test/test_video_io.cpp

@@ -419,8 +419,6 @@ static Ext_Fourcc_PSNR synthetic_params[] = {
    makeParam("mp4", "MJPG", 30.f, CAP_AVFOUNDATION),
    makeParam("m4v", "H264", 30.f, CAP_AVFOUNDATION),
    makeParam("m4v", "MJPG", 30.f, CAP_AVFOUNDATION),
-   makeParam("3gp", "H264", 30.f, CAP_AVFOUNDATION),
-   makeParam("3gp", "MJPG", 30.f, CAP_AVFOUNDATION),
 #endif
 
 #ifdef HAVE_FFMPEG