Issue with Protobuf and OpenCV 4 Compatibility on macOS

[Tendaliu]

OS Platform and Distribution

Mac OS 15

Compiler version

clang

Programming Language and version

C++ 17

Installed using virtualenv? pip? Conda?(if python)

No response

MediaPipe version

0.10.18

Bazel version

No response

XCode and Tulsi versions (if iOS)

No response

Android SDK and NDK versions (if android)

No response

Android AAR (if android)

None

OpenCV version (if running on desktop)

opencv 4.10

Describe the problem

Error occurs when running a MediaPipe dylib

Complete Logs

I am encountering an issue when compiling MediaPipe on macOS with OpenCV 4. The issue arises when running the libMediapipeHolisticTracking.dylib, resulting in a crash at the following location in the stack trace:


#0  0x000000010f398eb0 in google::protobuf::Reflection::GetOneofCase ()

It seems that this issue occurs specifically when OpenCV 4 is used for the compilation. The same issue does not occur when using OpenCV 3.4, and the application runs as expected in that case.

Based on my analysis, it appears that the crash is due to a version mismatch or ABI incompatibility between Protobuf and OpenCV 4. The Protobuf version in use by MediaPipe (3.19.1) might not be fully compatible with OpenCV 4, which may be using a more recent version of Protobuf. The issue does not occur with OpenCV 3.4, which seems to be more compatible with Protobuf 3.19.1.

[kuaashish]

Hi @Tendaliu,

Could you please confirm if you've followed the steps to set up OpenCV 4 as outlined in this commit? Additionally, could you verify if you are able to successfully build the Hello World example?

If you are still encountering issues, please provide the complete command you are using along with the full error log. This will help us reproduce the issue and better understand the problem.

Thank you!!

[Tendaliu]

I have followed the setup instructions for OpenCV 4, and I was able to successfully compile the example. However, I am encountering an issue when initializing the HolisticTracking tracker(modelpath, false, true, false, true);. The error I am seeing is:

libprotobuf.29.1.0.dylibgoogle::protobuf::FieldDescriptor::is_required.

My build command is:

bazel run --define MEDIAPIPE_DISABLE_GPU=1
--repo_env=HERMETIC_PYTHON_VERSION=3.12
mediapipe/examples/desktop/holistic_tracking_dll:MediapipeHolisticTracking --verbose_failures