Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Could not read frame

See original GitHub issue

Hi @arunponnusamy

I am trying to run object_detection_webcam.py.

[ WARN:0] videoio(MSMF): OnReadSample() is called with error status: -1072875772 [ WARN:0] videoio(MSMF): async ReadSample() call is failed with error status: -1072875772 [ WARN:1] videoio(MSMF): can't grab frame. Error: -1072875772 Could not read frame

It is unable to read the frame. Could you help me understand what went wrong?

Thanks.

Issue Analytics

State:
Created 5 years ago
Comments:31 (13 by maintainers)

Top GitHub Comments

6reactions

arunponnusamycommented, Oct 3, 2018

Hello @shrybht ,

object_detection.py accepts an input image to apply object detection. Usage is mentioned at the top of the file as comment.

# object detection example
# usage: python object_detection.py <input_image>

Regarding object_detection_webcam.py, I guess the issue is in accessing webcam at platform level. Are you working with Windows ?

Have a look at this issue on OpenCV forum.

Try replacing cv2.VideoCapture(0) with cv2.VideoCapture(cv2.CAP_DSHOW). Let me know if it works.

1reaction

OmkarVedakcommented, Jan 28, 2019

Hello @shrybht and @bogdan245 , I have fixed an issue in the config file. I think now it should work as expected. Delete .cvlib folder in the home directory(~) and try now. Let me know if you still face issue.

Where can I find .cvlib folder in windows?

Top Results From Across the Web

RuntimeError: Could not read frame: · Issue #168 - GitHub

Trying to run: imageio.mimread('http://techslides.com/demos/sample-videos/small.mp4') I get: Traceback (most recent call last): File " " ...

RuntimeError: Frame is 0 bytes, but expected 691200

Try to reupload the file and then try it again. If this doesn't solve the issue try changing the video fps and bitrate...

Frame reading errors with ffmpeg - Google Groups

mimread(*args) but it returned a "CannotReadFrameError", reading 0 bytes against an expected n bytes. I've noticed that it was always the 1400th frame...

Error: could not read video frame (-101) - DCP-o-matic

Hi, I'm trying to transcode an encrypted 4K DCP to an open 4K DCP, but I keep getting the error message mentioned in...

imageio.plugins.ffmpeg

Default None (i.e. read at the file's own fps). One can use this for files with a variable fps, or in cases where...