Segmentation fault (core dumped) when few video frames

[makecent]

My denseflow running always abort with error Segmentation fault (core dumped) at the middle of task.

I investigated the error information, and found that it always happens when the number of frames of current video is small.

Below are three error examples:

...
"abseiling/qqJisE6m6XI_000000_000010.mp4", frames ≈ 360                                              
push frames gray, video_flow_idx 0, batch_size 360                                                   
loaded video "abseiling/qqJisE6m6XI_000000_000010.mp4", 360 frames                                   
"abseiling/rseBvhN6dio_000003_000013.mp4", frames ≈ 300                                              
push frames gray, video_flow_idx 0, batch_size 300                                                   
loaded video "abseiling/rseBvhN6dio_000003_000013.mp4", 300 frames
"abseiling/xjhF2VEkh0E_000210_000220.mp4", frames ≈ 360
push frames gray, video_flow_idx 0, batch_size 360 
loaded video "abseiling/xjhF2VEkh0E_000210_000220.mp4", 360 frames
"abseiling/xnyOA58A07Q_000127_000137.mp4", frames ≈ 360
push frames gray, video_flow_idx 0, batch_size 360 
loaded video "abseiling/xnyOA58A07Q_000127_000137.mp4", 360 frames
"abseiling/y3-3i88mNPc_000008_000018.mp4", frames ≈ 78
frames_gray_queue full, waiting...
done video "abseiling/p1VKQa4N-hg_000000_000010"
push frames gray, video_flow_idx 0, batch_size 0
Segmentation fault (core dumped)

...
push frames gray, video_flow_idx 0, batch_size 341
loaded video "changing_wheel/0PAZuNazXY0_000106_000116.mp4", 341 frames
"changing_wheel/3QhnzaOGtJY_000177_000187.mp4", frames ≈ 288
frames_gray_queue full, waiting...
done video "changing_oil/yQN2Jex1ie0_000343_000353"
push frames gray, video_flow_idx 0, batch_size 288
loaded video "changing_wheel/3QhnzaOGtJY_000177_000187.mp4", 288 frames
"changing_wheel/49Cbc4YnJTE_000017_000027.mkv", frames ≈ 362
frames_gray_queue full, waiting...
done video "changing_oil/zc1eRTWvmKg_000041_000051"
push frames gray, video_flow_idx 0, batch_size 360
loaded video "changing_wheel/49Cbc4YnJTE_000017_000027.mkv", 360 frames
"changing_wheel/6UzqR0nlhPU_000104_000114.mp4", frames ≈ 92
frames_gray_queue full, waiting...                                                                   
done video "changing_wheel/-sw4w8ht36s_000386_000396"
push frames gray, video_flow_idx 0, batch_size 0
Segmentation fault (core dumped)

...
"drinking/bqrIi_jBOKI_000009_000019.mp4", frames ≈ 120            
push frames gray, video_flow_idx 0, batch_size 120         
loaded video "drinking/bqrIi_jBOKI_000009_000019.mp4", 120 frames            
"drinking/caFV09HNzzI_000023_000033.mp4", frames ≈ 228                       
push frames gray, video_flow_idx 0, batch_size 228                
loaded video "drinking/caFV09HNzzI_000023_000033.mp4", 228 frames            
"drinking/cnUjmGyYRmE_000089_000099.mkv", frames ≈ 289            
push frames gray, video_flow_idx 0, batch_size 287                                                   
loaded video "drinking/cnUjmGyYRmE_000089_000099.mkv", 287 frames            
"drinking/ecFPS0Ayhh0_000044_000054.mkv", frames ≈ 302                       
push frames gray, video_flow_idx 0, batch_size 300                
loaded video "drinking/ecFPS0Ayhh0_000044_000054.mkv", 300 frames   
"drinking/gDvxSxb3WuE_000188_000198.mp4", frames ≈ 90      
frames_gray_queue full, waiting...                                                                   
push frames gray, video_flow_idx 0, batch_size 0                                                     
Segmentation fault (core dumped)  

Emperically, it seems to happen when the video frames is less than 100?
I had tried turn down the batch_size to from 512 to 64, and it does NOT help.

[dingfengshi]

I have the same question...

[makecent]

I cannot say this is a solution -- but changing a computer solving my problem -- at least it proves it's not about my videos.

Actually, I kind of forcely install denseflow on the computer with this error. I encountered numerous problems and solved them one by one. While on the new computer, the installation is quite smooth and the denseflow just works well.

[jasorsi13]

getting the same seg fault

[jasorsi13]

I was facing segmentation fault core dump as It was writing the images back to disk. This worked.

import imageio ###conda install -c conda-forge imageio
replace all cv2.imwrite() or scipy.misc.imsave() to imageio.imwrite()
This is a mutex issue in new opencv releases. Always use imageio to write images back to the disk.

[jiaqingxiang111]

Segmentation fault (core dumped)

[jiaqingxiang111]

denseflow test.avi -b=20 -a=tvl1 -s=1 -v Segmentation fault (core dumped) Hello, I have been experiencing this error for a day and it has not been resolved yet. Thank you very much

[yuxi120407]

I have the same issue. Anybody could help?