Trying to detect faces in mp4 (javacv + opencv) leads to fatal errors SIGSERV
My best guess: Am I not releasing frames somehow?
I read a video using org.bytedeco.javacv.FFmpegFrameGrabber, and convert the frames to opencv_core.Mat, then convert THOSE to opencv.core.Mat (because I need to run a CascadeClassifier on it and we can't have nice things). I then skip frames that have already been processed.
Then it crashes.
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x000000010a6c2d21, pid=746, tid=0x0000000000005103
#
# JRE version: Java(TM) SE Runtime Environment (8.0_191-b12) (build 1.8.0_191-b12)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.191-b12 mixed mode bsd-amd64 compressed oops)
# Problematic frame:
# C [libopencv_java342.dylib+0xed21] Java_org_opencv_core_Mat_n_1delete+0x21
The odd thing is: if I don't skip the previously processed frames, it seems to work ok! Which is why I was wondering if there was some race going on, where the time I take processing the frames gives the system time to catch up in clearing out garbage?
The code (should be able to check out project and run it in IntelliJ if you have a long enough input.mp4 file to test it on)
- Kotlin sequence of Mat frames
- The line that seems to kill it (working with the Mat frame)
java opencv image-processing kotlin javacv
asked Nov 14 '18 at 18:36
Benjamin HBenjamin H
1,17711121
add a comment |
My best guess: Am I not releasing frames somehow?
I read a video using org.bytedeco.javacv.FFmpegFrameGrabber, and convert the frames to opencv_core.Mat, then convert THOSE to opencv.core.Mat (because I need to run a CascadeClassifier on it and we can't have nice things). I then skip frames that have already been processed.
Then it crashes.
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x000000010a6c2d21, pid=746, tid=0x0000000000005103
#
# JRE version: Java(TM) SE Runtime Environment (8.0_191-b12) (build 1.8.0_191-b12)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.191-b12 mixed mode bsd-amd64 compressed oops)
# Problematic frame:
# C [libopencv_java342.dylib+0xed21] Java_org_opencv_core_Mat_n_1delete+0x21
The odd thing is: if I don't skip the previously processed frames, it seems to work ok! Which is why I was wondering if there was some race going on, where the time I take processing the frames gives the system time to catch up in clearing out garbage?
The code (should be able to check out project and run it in IntelliJ if you have a long enough input.mp4 file to test it on)
- Kotlin sequence of Mat frames
- The line that seems to kill it (working with the Mat frame)
java opencv image-processing kotlin javacv
asked Nov 14 '18 at 18:36
Benjamin HBenjamin H
1,17711121
add a comment |
My best guess: Am I not releasing frames somehow?
I read a video using org.bytedeco.javacv.FFmpegFrameGrabber, and convert the frames to opencv_core.Mat, then convert THOSE to opencv.core.Mat (because I need to run a CascadeClassifier on it and we can't have nice things). I then skip frames that have already been processed.
Then it crashes.
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x000000010a6c2d21, pid=746, tid=0x0000000000005103
#
# JRE version: Java(TM) SE Runtime Environment (8.0_191-b12) (build 1.8.0_191-b12)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.191-b12 mixed mode bsd-amd64 compressed oops)
# Problematic frame:
# C [libopencv_java342.dylib+0xed21] Java_org_opencv_core_Mat_n_1delete+0x21
The odd thing is: if I don't skip the previously processed frames, it seems to work ok! Which is why I was wondering if there was some race going on, where the time I take processing the frames gives the system time to catch up in clearing out garbage?
The code (should be able to check out project and run it in IntelliJ if you have a long enough input.mp4 file to test it on)
- Kotlin sequence of Mat frames
- The line that seems to kill it (working with the Mat frame)
java opencv image-processing kotlin javacv
asked Nov 14 '18 at 18:36
Benjamin HBenjamin H
1,17711121
My best guess: Am I not releasing frames somehow?
I read a video using org.bytedeco.javacv.FFmpegFrameGrabber, and convert the frames to opencv_core.Mat, then convert THOSE to opencv.core.Mat (because I need to run a CascadeClassifier on it and we can't have nice things). I then skip frames that have already been processed.
Then it crashes.
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x000000010a6c2d21, pid=746, tid=0x0000000000005103
#
# JRE version: Java(TM) SE Runtime Environment (8.0_191-b12) (build 1.8.0_191-b12)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.191-b12 mixed mode bsd-amd64 compressed oops)
# Problematic frame:
# C [libopencv_java342.dylib+0xed21] Java_org_opencv_core_Mat_n_1delete+0x21
The odd thing is: if I don't skip the previously processed frames, it seems to work ok! Which is why I was wondering if there was some race going on, where the time I take processing the frames gives the system time to catch up in clearing out garbage?
The code (should be able to check out project and run it in IntelliJ if you have a long enough input.mp4 file to test it on)
- Kotlin sequence of Mat frames
- The line that seems to kill it (working with the Mat frame)
java opencv image-processing kotlin javacv
java opencv image-processing kotlin javacv
asked Nov 14 '18 at 18:36
Benjamin HBenjamin H
1,17711121
asked Nov 14 '18 at 18:36
Benjamin HBenjamin H
1,17711121
edited Nov 14 '18 at 18:43
Benjamin H
asked Nov 14 '18 at 18:36
Benjamin HBenjamin H
1,17711121
asked Nov 14 '18 at 18:36
Benjamin HBenjamin H
1,17711121
asked Nov 14 '18 at 18:36
Benjamin HBenjamin H
1,17711121
1,17711121
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add a comment |
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