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Employee
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OpenCV(4.1.2-openvino): CAP_IMAGES: can't find starting number (in the name of file):

Hi,

                      I am using OpenCV(4.1.2-openvino) , when I am trying to write video output I am getting below error. Although my output video is still getting generated. Below is cv2.VideoWriter statement and full error signature. Please let me know how to resolve this.

out_video=cv2.VideoWriter(out_video_name,cv2.VideoWriter_fourcc('M','J','P','G'), fps, (frame_width,frame_height))

Error signature :

 

MFX: Unsupported extension: .\test_images\test_video.avi
MFX: Unsupported FourCC: MJPG (0x47504a4d)
[ERROR:0] global C:\jenkins\workspace\OpenCV\OpenVINO\build\opencv\modules\videoio\src\cap.cpp (392) cv::VideoWriter::open VIDEOIO(CV_IMAGES): raised OpenCV exception:

OpenCV(4.1.2-openvino) C:\jenkins\workspace\OpenCV\OpenVINO\build\opencv\modules\videoio\src\cap_images.cpp:253: error: (-5:Bad argument) CAP_IMAGES: can't find starting number (in the name of file): .\test_images\kid_family_in_car_out.avi in function 'cv::icvExtractPattern'

 

Thanks

Chetan

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21 Replies
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Employee
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This is internal error message, it can be ignored. To suppress it you can set videoio backend explicitly: VideoWriter(filename, cv2.CAP_OPENCV_MJPEG, ...).

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Beginner
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Hi, I am having the same error, but the output video is not generated. Please help, thx.

 

chew.

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Beginner
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Hi, I have realised my mistake and solved it. Thank you.

Chew.

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Moderator
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Hi chew, minjian,

Glad you were able to resolve the issue. I'd be great to know what the problem was and how you managed to resolve it, so other community members can benefit from it in case they run into something similar. Thanks for using OpenVINO!

Regards,

Luis

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13,218 Views

Looks like I have the same issue: " MFX: Unsupported extension: http://<ip_address>"

Please what setting I have to make if I use python code :

net = cv2.dnn.readNetFromCaffe(prototxt, model) # specify the target device as the Myriad processor on the NCS if DNN_TARGET_MYRIAD: net.setPreferableTarget(cv2.dnn.DNN_TARGET_MYRIAD)

_frame = cv2.resize(frame, (DIMENSION_X, DIMENSION_Y))

blob = cv2.dnn.blobFromImage(_frame, 0.007843, (DIMENSION_X, DIMENSION_Y), (127.5,127.5,127.5), True)

detections = net.forward()

I use cv2.version = '4.2.0-openvino'

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Beginner
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I have a similar problem... but... my code actually works perfect on python. 

The problem is reported only on the EXE (one standalone file) created with pyinstaller for distribution.

The segment of my code is:     ( / is used because I have pathlib paths)

 

fourcc = cv2.VideoWriter_fourcc(*'XVID')

frame = cv2.imread(str(exampath / (images_foto[0])))
height, width, layers = frame.shape

a=input('Pause... before the error')
video = cv2.VideoWriter('D:/pruebaOTRO.avi', fourcc, 24, (width,height))
a=input('Pause... after the error')

for image in images_foto:
    video.write(cv2.imread(str(exampath / image)))

 

and the problem reported between "pauses" is:

[ERROR:0] global C:\projects\opencv-python\opencv\modules\videoio\src\cap.cpp (415) cv::VideoWriter::open VIDEOIO(CV_IMAGES): raised OpenCV exception:

OpenCV(4.2.0) C:\projects\opencv-python\opencv\modules\videoio\src\cap_images.cpp:253: error: (-5:Bad argument) CAP_IMAGES: can't find starting number (in the name of file): D:/pruebaOTRO.avi in function 'cv::icvExtractPattern'

 

I don't understand where or WHY is the problem

 

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Beginner
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MFX: Unsupported extension: Safety_Full_Hat_and_Vest.mp4
[ WARN:0] global C:\jenkins\workspace\OpenCV\OpenVINO\2020.2\build\windows\opencv\modules\videoio\src\cap_msmf.cpp (681) CvCapture_MSMF::initStream Failed to set mediaType (stream 0, (0x0 @ 1) MFVideoFormat_RGB32(unsupported media type)

I AM USING  CPP EXECUTABLE FILE

 

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I am also getting the same error
MFX: Unsupported extension: Safety_Full_Hat_and_Vest.mp4
[ WARN:0] global C:\jenkins\workspace\OpenCV\OpenVINO\2020.2\build\windows\opencv\modules\videoio\src\cap_msmf.cpp (681) CvCapture_MSMF::initStream Failed to set mediaType (stream 0, (0x0 @ 1) MFVideoFormat_RGB32(unsupported media type)
To close the application, press 'CTRL+C' here or switch to the output window and press ESC key

 

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Beginner
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Hi Nikhil & Maajid,

This is a problem with the Ver 2020.2.
It is normal to change to the Ver 2020.1.

This problem has troubled me for a while......

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Beginner
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OpenCV(4.3.0-openvino) C:\jenkins\workspace\OpenCV\OpenVINO\2020.2\build\windows\opencv\modules\videoio\src\cap_images.cpp:253: error: (-5:Bad argument) CAP_IMAGES: can't find starting number (in the name of file): car.jpg in function 'cv::icvExtractPattern'

please help

thankyou

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please 

Lin, Moda

  you solved the mfx extension problem just by changing version

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Moderator
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Khan, N Maajid (Intel) wrote:

I am also getting the same error
MFX: Unsupported extension: Safety_Full_Hat_and_Vest.mp4
[ WARN:0] global C:\jenkins\workspace\OpenCV\OpenVINO\2020.2\build\windows\opencv\modules\videoio\src\cap_msmf.cpp (681) CvCapture_MSMF::initStream Failed to set mediaType (stream 0, (0x0 @ 1) MFVideoFormat_RGB32(unsupported media type)
To close the application, press 'CTRL+C' here or switch to the output window and press ESC key

 

Hello all.
This problem in OpenVINO 2020.2 release being considered as a bug. Problem is related to media files with audio streams and MSMF backend.
Meanwhile, you can use one of the following workarounds:
1. Install FFmpeg as VideoCapture backend (on Windows you need to download OpenCV community plugin. There's downloader script in the package: openvino\opencv\ffmpeg-download.ps1. Right click on it - Run with PowerShell).
2. Use hot fix available in upstream https://github.com/opencv/opencv/pull/17406
3. Use media file without audio stream

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please how do we undergo the first step

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Moderator
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Hi Franck.

You can use just one of these 3 workarounds suggested. This is needed if you experience this "MFX: Unsupported extension" error in Windows OpenVINO 2020.2 and 2020.3 versions.

For the first one, as mentioned, there is a downloader script ffmpeg-download.ps1 in the directory <OPENVINO_DIR>\opencv\ 
Right click on this script, and then "Run with PowerShell".

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Beginner
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Same issue here, I have followed  Max L. (Intel)'s advice to installed FFmpeg, when I try to create an avi file of fourcc MJPG, it will complain unsupported Fourcc

 

MFX: Unsupported FourCC: MJPG (0x47504a4d)
2544-Thread-4 2020-06-19 23:09:27,232 videoRecord.py:84 prepareWriter DEBUG - create a new file: mov/idle-2020-06-19-23-09-25.avi
2544-Thread-4 2020-06-19 23:09:37,278 videoRecord.py:76 prepareWriter DEBUG - close avi file

then I changed to XVID / mp4, still complaints here

MFX: Unsupported FourCC: XVID (0x44495658)
6336-Thread-4 2020-06-19 23:12:07,695 videoRecord.py:84 prepareWriter DEBUG - create a new file: mov/idle-2020-06-19-23-12-05.mp4
6336-Thread-4 2020-06-19 23:12:17,754 videoRecord.py:76 prepareWriter DEBUG - close avi file

 

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la, xl wrote:

Same issue here, I have followed  Max L. (Intel)'s advice to installed FFmpeg, when I try to create an avi file of fourcc MJPG, it will complain unsupported Fourcc

 

MFX: Unsupported FourCC: MJPG (0x47504a4d)
2544-Thread-4 2020-06-19 23:09:27,232 videoRecord.py:84 prepareWriter DEBUG - create a new file: mov/idle-2020-06-19-23-09-25.avi
2544-Thread-4 2020-06-19 23:09:37,278 videoRecord.py:76 prepareWriter DEBUG - close avi file

then I changed to XVID / mp4, still complaints here

MFX: Unsupported FourCC: XVID (0x44495658)
6336-Thread-4 2020-06-19 23:12:07,695 videoRecord.py:84 prepareWriter DEBUG - create a new file: mov/idle-2020-06-19-23-12-05.mp4
6336-Thread-4 2020-06-19 23:12:17,754 videoRecord.py:76 prepareWriter DEBUG - close avi file

 

Hi la, xl

The following formats are only supported: AVC (X264, H264, AVC), HEVC (H265, HEVC), MPEG2. If you use different format, you'll see this error message.

Thanks.

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Beginner
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hi Max_l,

  I have create cv2.VideoWriter using VideoWriter_fourcc to indicate Encoder format,

 I could not found AVC/HEVC/MPEG2 in here FOURCC 

ffmpeg output,

  libavutil      56. 54.100 / 56. 54.100
  libavcodec     58. 92.100 / 58. 92.100
  libavformat    58. 46.101 / 58. 46.101
  libavdevice    58. 11.100 / 58. 11.100
  libavfilter     7. 86.100 /  7. 86.100
  libswscale      5.  8.100 /  5.  8.100
  libswresample   3.  8.100 /  3.  8.100
  libpostproc    55.  8.100 / 55.  8.100
 DEV.LS h264                 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (decoders: h264 h264_qsv h264_cuvid ) (encoders: libx264 libx264rgb h264_amf h264_mf h264_nvenc h264_qsv nvenc nvenc_h264 )
 DEV.L. hevc                 H.265 / HEVC (High Efficiency Video Coding) (decoders: hevc hevc_qsv hevc_cuvid ) (encoders: libx265 nvenc_hevc hevc_amf hevc_mf hevc_nvenc hevc_qsv )
 DEVIL. mjpeg                Motion JPEG (decoders: mjpeg mjpeg_cuvid mjpeg_qsv ) (encoders: mjpeg mjpeg_qsv )
 DEV.L. mpeg2video           MPEG-2 video (decoders: mpeg2video mpegvideo mpeg2_qsv mpeg2_cuvid ) (encoders: mpeg2video mpeg2_qsv )
 D.V.L. vc1                  SMPTE VC-1 (decoders: vc1 vc1_qsv vc1_cuvid )
 DEV.L. vp8                  On2 VP8 (decoders: vp8 libvpx vp8_cuvid vp8_qsv ) (encoders: libvpx )
 DEV.L. vp9                  Google VP9 (decoders: vp9 libvpx-vp9 vp9_cuvid vp9_qsv ) (encoders: libvpx-vp9 vp9_qsv )

 

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I was trying to run "interactive_face_detection_demo.exe" in Win10 using ToolKit2020r4 with an IP camera via rtsp url.

Encounter error "OpenCV(4.4.0-openvino) C:\jenkins\workspace\OpenCV\OpenVINO\2020.4\build\windows\opencv\modules\videoio\src\cap_images.cpp:253: error: (-5:Bad argument) CAP_IMAGES: can't find starting number (in the name of file)"

 

Resolved by executing "ffmpeg-download.ps1" in the directory <OPENVINO_DIR>\opencv\ on PowerShell

(Do need to ensure that the script is run with administrator rights and enable remotesigned policy prior to executing "ffmpeg-download.ps1")

 

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Novice
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Hi,

I am facing the same error. Output video file is not generated. I'm using OpenVINO 2020.4

I executed the downloader script ffmpeg-download.ps1 on PowerShell. But, still facing the same error.

Can you let me know if you were able to resolve this issue. Thank you.

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