[Bug]

[xwjBupt]

Prerequisite

• I have searched Issues and Discussions but cannot get the expected help.
• The bug has not been fixed in the latest version(https://github.com/open-mmlab/mmcv).

Environment

OrderedDict({'sys.platform': 'win32', 'Python': '3.12.8 | packaged by Anaconda, Inc. | (main, Dec 11 2024, 16:48:34) [MSC v.1929 64 bit (AMD64)]', 'CUDA available': False, 'MUSA available': False, 'numpy_random_seed': np.uint32(2147483648), 'GCC': 'n/a', 'PyTorch': '2.6.0+cpu', 'PyTorch compiling details': 'PyTorch built with:\n - C++ Version: 201703\n - MSVC 192930157\n - Intel(R) oneAPI Math Kernel Library Version 2025.0.1-Product Build 20241031 for Intel(R) 64 architecture applications\n - Intel(R) MKL-DNN v3.5.3 (Git Hash 66f0cb9eb66affd2da3bf5f8d897376f04aae6af)\n - OpenMP 2019\n - LAPACK is enabled (usually provided by MKL)\n - CPU capability usage: AVX2\n - Build settings: BLAS_INFO=mkl, BUILD_TYPE=Release, COMMIT_SHA=2236df1770800ffea5697b11b0bb0d910b2e59e1, CXX_COMPILER=C:/actions-runner/_work/pytorch/pytorch/pytorch/.ci/pytorch/windows/tmp_bin/sccache-cl.exe, CXX_FLAGS=/DWIN32 /D_WINDOWS /GR /EHsc /Zc:__cplusplus /bigobj /FS /utf-8 -DUSE_PTHREADPOOL -DNDEBUG -DUSE_KINETO -DLIBKINETO_NOCUPTI -DLIBKINETO_NOROCTRACER -DLIBKINETO_NOXPUPTI=ON -DUSE_FBGEMM -DUSE_XNNPACK -DSYMBOLICATE_MOBILE_DEBUG_HANDLE /wd4624 /wd4068 /wd4067 /wd4267 /wd4661 /wd4717 /wd4244 /wd4804 /wd4273, LAPACK_INFO=mkl, PERF_WITH_AVX=1, PERF_WITH_AVX2=1, TORCH_VERSION=2.6.0, USE_CUDA=0, USE_CUDNN=OFF, USE_CUSPARSELT=OFF, USE_EXCEPTION_PTR=1, USE_GFLAGS=OFF, USE_GLOG=OFF, USE_GLOO=ON, USE_MKL=ON, USE_MKLDNN=ON, USE_MPI=OFF, USE_NCCL=OFF, USE_NNPACK=OFF, USE_OPENMP=ON, USE_ROCM=OFF, USE_ROCM_KERNEL_ASSERT=OFF, \n', 'TorchVision': '0.21.0+cpu', 'OpenCV': '4.11.0', 'MMEngine': '0.10.6', 'MMCV': '2.2.0', 'MMCV Compiler': 'n/a', 'MMCV CUDA Compiler': 'n/a'})

Reproduces the problem - code sample

def readvideo_mmcv(video_path):
try:
video_content = mmcv.VideoReader(video)
frame_count = len(video_content)
return frame_count, video_content.fps, video_content.width, video_content.height
except Exception as e:
return False, False, False, False

Reproduces the problem - command or script

def readvideo_mmcv(video_path):
try:
video_content = mmcv.VideoReader(video)
frame_count = len(video_content)
return frame_count, video_content.fps, video_content.width, video_content.height
except Exception as e:
return False, False, False, False

Reproduces the problem - error message

[ERROR:[email protected]] global cap_ffmpeg_impl.hpp:1326 open Could not find decoder for codec_id=61
[ERROR:[email protected]] global cap_ffmpeg_impl.hpp:1375 open VIDEOIO/FFMPEG: Failed to initialize VideoCapture

Additional information

i can not read my video(download link:https://drive.google.com/file/d/1ZWXCmB11aupPAXasyd8XGzjsaBxjU2av/view?usp=sharing) and showing the above problem, what is the problem?