OpenCV VideoWriter crashing plugin

Hi,

I'm trying to use cv::VideoWriter in my plugin code to create a video, but everytime I try to create a VideoWriter object, the plugin never gets called.

I've included:
#include <opencv2/core.hpp>
#include <opencv2/dnn/dnn.hpp>
#include <opencv2/imgcodecs.hpp>

#include <opencv2/opencv.hpp>
#include "opencv2/imgproc/imgproc.hpp"
#include <opencv2/videoio.hpp>

Code line that causes problem (somewhere within DeviceAgent::pushUncompressedVideoFrame function):
cv::VideoWriter outputVideo;

If I comment out the above line of code, plugin works fine and gets unprocessed frames from the Meta Server. 
When I add the code, it doesn't create the Engine. There are no errors, but the plugin just doesn't get called.
Am I missing some libraries for supporting videos? I have ffmpeg on my system and my Opencv build info shows this:

General configuration for OpenCV 4.1.2 =====================================
  Version control:               unknown
  Extra modules:
    Location (extra):            /home/forest/.conan/data/opencv/4.1.2/_/_/build/ff5c398d37be7adabdc0604de5791a626311d6d2/contrib/modules
    Version control (extra):     unknown
  Platform:
    Timestamp:                   2022-07-21T06:02:04Z
    Host:                        Linux 5.4.0-110-generic x86_64
    CMake:                       3.16.3
    CMake generator:             Unix Makefiles
    CMake build tool:            /usr/bin/make
    Configuration:               Release
  CPU/HW features:
    Baseline:                    SSE SSE2 SSE3
      requested:                 SSE3
    Dispatched code generation:  SSE4_1 SSE4_2 FP16 AVX AVX2 AVX512_SKX
      requested:                 SSE4_1 SSE4_2 AVX FP16 AVX2 AVX512_SKX
      SSE4_1 (14 files):         + SSSE3 SSE4_1
      SSE4_2 (1 files):          + SSSE3 SSE4_1 POPCNT SSE4_2
      FP16 (0 files):            + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 AVX
      AVX (4 files):             + SSSE3 SSE4_1 POPCNT SSE4_2 AVX
      AVX2 (27 files):           + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2
      AVX512_SKX (3 files):      + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2 AVX_512F AVX512_COMMON AVX512_SKX
  C/C++:
    Built as dynamic libs?:      NO
    C++ Compiler:                /usr/bin/c++  (ver 9.4.0)
    C++ flags (Release):         -m64   -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG   -DNDEBUG
    C++ flags (Debug):           -m64   -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -g   -O0 -DDEBUG -D_DEBUG
    C Compiler:                  /usr/bin/cc
    C flags (Release):           -m64   -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -fvisibility=hidden -O3 -DNDEBUG   -DNDEBUG
    C flags (Debug):             -m64   -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -fvisibility=hidden -g   -O0 -DDEBUG -D_DEBUG
    Linker flags (Release):      -Wl,-Bsymbolic,-znoexecstack -Wl,-Bsymbolic -m64  -Wl,--gc-sections
     Linker flags (Debug):        -Wl,-Bsymbolic,-znoexecstack -Wl,-Bsymbolic -m64  -Wl,--gc-sections
     ccache:                      NO
     Precompiled headers:         NO
     Extra dependencies:          /home/forest/.conan/data/zlib/1.2.12/_/_/package/6af9cc7cb931c5ad942174fd7838eb655717c709/lib/libz.a ade /home/forest/.conan/data/libjpeg/9d/_/_/package/6af9cc7cb931c5ad942174fd7838eb655717c709/lib/libjpeg.a dl m pthread rt
     3rdparty dependencies:
   OpenCV modules:
     To be built:                 aruco bgsegm bioinspired calib3d ccalib core datasets dnn dnn_objdetect dnn_superres dpm face features2d flann fuzzy gapi hfs highgui img_hash imgcodecs imgproc line_descriptor ml objdetect optflow phase_unwrapping photo plot quality reg rgbd saliency shape stereo stitching structured_light superres surface_matching text tracking video videoio videostab xfeatures2d ximgproc xobjdetect xphoto
     Disabled:                    freetype python_tests world
     Disabled by dependency:      -
     Unavailable:                 cnn_3dobj cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev cvv hdf java js matlab ovis python2 python3 sfm ts viz
     Applications:                -
     Documentation:               NO
     Non-free algorithms:         NO
   GUI:
   Media I/O:
     ZLib:                        /home/forest/.conan/data/zlib/1.2.12/_/_/package/6af9cc7cb931c5ad942174fd7838eb655717c709/lib/libz.a  (ver )
     JPEG:                        (ver 90)
     HDR:                         NO
     SUNRASTER:                   NO
     PXM:                         NO
     PFM:                         NO
   Video I/O:
     FFMPEG:                      YES (find_package)
       avcodec:                   YES (58.134.100)
       avformat:                  YES (58.76.100)
       avutil:                    YES (56.70.100)
       swscale:                   YES (5.9.100)
       avresample:                YES (4.4)
   Parallel framework:            pthreads
   Trace:                         YES (built-in)
   Other third-party libraries:
     Custom HAL:                  NO
     Protobuf:                    /home/forest/.conan/data/protobuf/3.17.1/_/_/package/7627fae1426bcc12a67dba7c7207b1bccf05e5fd/lib/libprotoc.a /home/forest/.conan/data/protobuf/3.17.1/_/_/package/7627fae1426bcc12a67dba7c7207b1bccf05e5fd/lib/libprotobuf.a (3.17.1)
   Python (for build):            NO
   Install to:                    /home/forest/.conan/data/opencv/4.1.2/_/_/package/ff5c398d37be7adabdc0604de5791a626311d6d2

=====================================

Any pointers would be appreciated!