denseflow
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open-mmlab
Segmentation fault (core dumped) when few video frames
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.
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.
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.
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
