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The pirate bay depuis la Belgique
1er avril 2013, par
Mis à jour : Avril 2013
Langue : français
Type : Image
Autres articles (80)
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Gestion des droits de création et d’édition des objets
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Sur d’autres sites (8558)
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cap.isOpened() : returns false in CentOS for Python 3 and OpenCV 3.1.0
29 octobre 2017, par Mona JalalSo cap from opencv 3 doesn’t work in CentOS. I had no problem in OSX or Windows 7 which I tried initially.
Here is the example code :import cv2
cap = cv2.VideoCapture('/home/grad3/jalal/PycharmProjects/hw4_cs585/Concession_LAN_800k.mp4',cv2.CAP_FFMPEG)
if not cap.isOpened():
print('not opened')
while True:
ret,frame = cap.read()
if ret == False:
print('frame empty')
break
cv2.imshow('frame', frame)
if cv2.waitKey(1) == ord('q'):
breakAnd I get :
/usr/local/anaconda3/bin/python /home/grad3/jalal/PycharmProjects/hw4_cs585/test.py
not opened
frame empty
Process finished with exit code 0I can open the video using ffplay vid_name and also here is the result of https://pastebin.com/YGk2DDCi here https://pastebin.com/HSyHSsEZ (ffmpeg codecs). How should I fix this ?
I have opencv 3.1.0 and here’s some sys info.
$ uname -a
Linux goku.bu.edu 3.10.0-693.5.2.el7.x86_64 #1 SMP Fri Oct 20 20:32:50 UTC 2017 x86_64 x86_64 x86_64 GNU/Linuxand
$ lsb_release -a
LSB Version: :core-4.1-amd64:core-4.1-noarch
Distributor ID: CentOS
Description: CentOS Linux release 7.4.1708 (Core)
Release: 7.4.1708
Codename: Core
cv2. getBuildInformation()
General configuration for OpenCV 3.1.0 =====================================
Version control: unknown
Platform:
Host: Linux 4.8.0-46-generic x86_64
CMake: 3.6.3
CMake generator: Unix Makefiles
CMake build tool: /usr/bin/gmake
Configuration: Release
C/C++:
Built as dynamic libs?: YES
C++ Compiler: /opt/rh/devtoolset-2/root/usr/bin/c++ (ver 4.8.2)
C++ flags (Release): -I/cs/software/anaconda3/include -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wno-narrowing -Wno-delete-non-virtual-dtor -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -mno-avx -msse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -ffunction-sections -fvisibility=hidden -fvisibility-inlines-hidden -fopenmp -O3 -DNDEBUG -DNDEBUG
C++ flags (Debug): -I/cs/software/anaconda3/include -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wno-narrowing -Wno-delete-non-virtual-dtor -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -mno-avx -msse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -ffunction-sections -fvisibility=hidden -fvisibility-inlines-hidden -fopenmp -g -O0 -DDEBUG -D_DEBUG
C Compiler: /opt/rh/devtoolset-2/root/usr/bin/cc
C flags (Release): -I/cs/software/anaconda3/include -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wno-narrowing -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -mno-avx -msse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -ffunction-sections -fvisibility=hidden -fopenmp -O3 -DNDEBUG -DNDEBUG
C flags (Debug): -I/cs/software/anaconda3/include -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wno-narrowing -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -mno-avx -msse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -ffunction-sections -fvisibility=hidden -fopenmp -g -O0 -DDEBUG -D_DEBUG
Linker flags (Release):
Linker flags (Debug):
Precompiled headers: YES
Extra dependencies: /cs/software/anaconda3/lib/libjpeg.so /cs/software/anaconda3/lib/libpng.so /cs/software/anaconda3/lib/libtiff.so /cs/software/anaconda3/lib/libhdf5.so /usr/lib64/librt.so /usr/lib64/libpthread.so /cs/software/anaconda3/lib/libz.so /usr/lib64/libdl.so /usr/lib64/libm.so dl m pthread rt
3rdparty dependencies: libwebp libjasper IlmImf libprotobuf
OpenCV modules:
To be built: core flann hdf imgproc ml photo reg surface_matching video dnn fuzzy imgcodecs shape videoio highgui objdetect plot superres xobjdetect xphoto bgsegm bioinspired dpm face features2d line_descriptor saliency text calib3d ccalib datasets rgbd stereo structured_light tracking videostab xfeatures2d ximgproc aruco optflow stitching python3
Disabled: world contrib_world
Disabled by dependency: -
Unavailable: cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev java python2 ts viz cvv matlab sfm
GUI:
QT: NO
GTK+: NO
GThread : NO
GtkGlExt: NO
OpenGL support: NO
VTK support: NO
Media I/O:
ZLib: /cs/software/anaconda3/lib/libz.so (ver 1.2.8)
JPEG: /cs/software/anaconda3/lib/libjpeg.so (ver 80)
WEBP: build (ver 0.3.1)
PNG: /cs/software/anaconda3/lib/libpng.so (ver 1.6.27)
TIFF: /cs/software/anaconda3/lib/libtiff.so (ver 42 - 4.0.6)
JPEG 2000: build (ver 1.900.1)
OpenEXR: build (ver 1.7.1)
GDAL: NO
Video I/O:
DC1394 1.x: NO
DC1394 2.x: NO
FFMPEG: NO
codec: NO
format: NO
util: NO
swscale: NO
resample: NO
gentoo-style: NO
GStreamer: NO
OpenNI: NO
OpenNI PrimeSensor Modules: NO
OpenNI2: NO
PvAPI: NO
GigEVisionSDK: NO
UniCap: NO
UniCap ucil: NO
V4L/V4L2: YES/YES
XIMEA: NO
Xine: NO
gPhoto2: NO
Parallel framework: OpenMP
Other third-party libraries:
Use IPP: 9.0.1 [9.0.1]
at: /opt/conda/conda-bld/opencv_1491943704081/work/opencv-3.1.0/3rdparty/ippicv/unpack/ippicv_lnx
Use IPP Async: NO
Use VA: NO
Use Intel VA-API/OpenCL: NO
Use Eigen: YES (ver 3.2.8)
Use Cuda: NO
Use OpenCL: NO
Use custom HAL: NO
Python 2:
Interpreter: (ver 3.5.3)
Python 3:
Interpreter: /cs/software/anaconda3/bin/python (ver 3.5.3)
Libraries: /cs/software/anaconda3/lib/libpython3.5m.so (ver 3.5.3)
numpy: /cs/software/anaconda3/lib/python3.5/site-packages/numpy/core/include (ver 1.12.1)
packages path: /cs/software/anaconda3/lib/python3.5/site-packages
Python (for build):
Java:
ant: NO
JNI: NO
Java wrappers: NO
Java tests: NO
Matlab: NO
Tests and samples:
Tests: NO
Performance tests: NO
C/C++ Examples: NO
Install path: /cs/software/anaconda3
cvconfig.h is in: /opt/conda/conda-bld/opencv_1491943704081/work/opencv-3.1.0/build
-----------------------------------------------------------------UPDATE : tried .avi and .flv formats and the same problem !
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How to Add a Watermark to Http live streaming HLS files
1er novembre 2017, par OliWe have about 2000 movies that are streamed to HLS format. each movie is in a folder with one
.m3u8
file and lots of.ts
files. is there any way to add ourWatermark.png
to all these movies without re-encoding to.mp4
files usingffmpeg
? -
how to solve ffmpeg watermark "No such filter : 'movie'" AND "Failed to avformat_open_input" ?
28 août 2014, par Savas Adari am developing a windows service, my windows service use "ffmpeg" and same time i am developing a desktop application for testing the code.
i want to import a watermark in my videos. i can do it with my desktop app. but when i run my windows service it take an error.
ffmpeg version N-36635-gceb0dd9 Copyright (c) 2000-2012 the FFmpeg developers
built on Jan 9 2012 17:39:58 with gcc 4.6.2
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-runtime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
libavutil 51. 34.100 / 51. 34.100
libavcodec 53. 54.100 / 53. 54.100
libavformat 53. 29.100 / 53. 29.100
libavdevice 53. 4.100 / 53. 4.100
libavfilter 2. 58.100 / 2. 58.100
libswscale 2. 1.100 / 2. 1.100
libswresample 0. 6.100 / 0. 6.100
libpostproc 51. 2.100 / 51. 2.100
[mpeg4 @ 01CA93A0] Invalid and inefficient vfw-avi packed B frames detected
Input #0, avi, from 'C:\Apps\SabilVideoProcesser\WAITING_FOR_WATERMARK\Pixar - For the Birds.avi':
Metadata:
encoder : Nandub v1.0rc2
Duration: 00:03:16.56, start: 0.000000, bitrate: 2113 kb/s
Stream #0:0: Video: mpeg4 (DX50 / 0x30355844), yuv420p, 720x416 [SAR 1:1 DAR 45:26], 25 fps, 25 tbr, 25 tbn, 30k tbc
Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 48000 Hz, stereo, s16, 32 kb/s
[buffer @ 02746A20] w:720 h:416 pixfmt:yuv420p tb:1/1000000 sar:1/1 sws_param:
[movie @ 02748E00] Failed to avformat_open_input 'logo.png'
Error initializing filter 'movie' with args 'logo.png'
Error opening filters!i change logo.png sometimes but it didnt work and fixed. i dont understand what is wrong ?
I tried change ffmpeg.exe and i downloaded from "http://ffmpeg.arrozcru.org/autobuilds/ffmpeg/mingw32/static/" but when i run service, i got an error again. this time error is different i will crazy...
FFmpeg version SVN-r26400, Copyright (c) 2000-2011 the FFmpeg developers
built on Jan 18 2011 04:07:05 with gcc 4.4.2
configuration: --enable-gpl --enable-version3 --enable-libgsm --enable-libvorbis --enable-libtheora --enable-libspeex --enable-libmp3lame --enable-libopenjpeg --enable-libschroedinger --enable-libopencore_amrwb --enable-libopencore_amrnb --enable-libvpx --disable-decoder=libvpx --arch=x86 --enable-runtime-cpudetect --enable-libxvid --enable-libx264 --enable-librtmp --extra-libs='-lrtmp -lpolarssl -lws2_32 -lwinmm' --target-os=mingw32 --enable-avisynth --enable-w32threads --cross-prefix=i686-mingw32- --cc='ccache i686-mingw32-gcc' --enable-memalign-hack
libavutil 50.36. 0 / 50.36. 0
libavcore 0.16. 1 / 0.16. 1
libavcodec 52.108. 0 / 52.108. 0
libavformat 52.93. 0 / 52.93. 0
libavdevice 52. 2. 3 / 52. 2. 3
libavfilter 1.74. 0 / 1.74. 0
libswscale 0.12. 0 / 0.12. 0
[mpeg4 @ 003dfbd0] Invalid and inefficient vfw-avi packed B frames detected
[mpeg4 @ 003dfbd0] frame skip 8
Seems stream 0 codec frame rate differs from container frame rate: 30000.00 (30000/1) -> 25.00 (25/1)
Input #0, avi, from 'C:\Apps\SabilVideoProcesser\WAITING_FOR_WATERMARK\Pixar - For the Birds.avi':
Metadata:
encoder : Nandub v1.0rc2
Duration: 00:03:16.56, start: 0.000000, bitrate: 2113 kb/s
Stream #0.0: Video: mpeg4, yuv420p, 720x416 [PAR 1:1 DAR 45:26], 25 fps, 25 tbr, 25 tbn, 30k tbc
Stream #0.1: Audio: mp3, 48000 Hz, 2 channels, s16, 189 kb/s
[buffer @ 020d51b0] w:720 h:416 pixfmt:yuv420p
No such filter: 'movie'
Error opening filters!here is the my ffmpeg params ;
-i "C:\Apps\SabilVideoProcesser\WAITING_FOR_WATERMARK\Pixar - For the Birds.avi" -vf "movie=logo.png [watermark]; [in][watermark] overlay=main_w-overlay_w-10:10 [out]" -vcodec libx264 -acodec ac3_fixed "C:\Apps\SabilVideoProcesser\WAITING_FOR_SPLIT\inprocess_Pixar - For the Birds.avi"