ffmpeg dlls shipped with v2.4.7 incompatible with python module (Bug #3395)
| Status: | Done | Start date: | 2013-11-25 |
|---|---|---|---|
| Priority: | Normal | Due date: | |
| Assignee: |  Victor Kocheganov |
% Done: | 100% |
| Category: | build/install | ||
| Target version: | - | ||
| Affected version: | 2.4.7 (latest release) | Operating System: | Windows |
| Difficulty: | HW Platform: | x64 | |
| Pull request: |
Description
System information:
Windows 7 x64 SP1
Python 2.7.5 (default, May 15 2013, 22:43:36) [MSC v.1500 32 bit (Intel)] on win32
opencv 32bit 2.4.7
Steps to reproduce:
copy build/python/x86/cv2.pyd to PYTHON/lib/site-packages
set environment path to include opencv_ffmpeg247.dll (tried both vc10, vc11 versions in build directory, as well as the one in sources/3rdparty/ffmpeg; also tried all conceivable naming schemes to be on the safe side too, i.e. ffmpeg.dll, ffmpeg247.dll, opencv_ffmpeg.dll, opencv_ffmpeg247.dll for all those dlls)
Expect the following program
capture = cv2.VideoCapture("cube4.avi") # or path to any other avi
print capture.isOpened()
to return true.
Actual Result: False. Unencoded raw files on the other hand work fine as expected.
The same steps work fine under OpenCV 2.4.5 so I assume the dlls included are for one reason or the other incompatible with the compiled python module.
History
Updated by Roman Donchenko over 11 years ago
The 32-bit FFmpeg DLL shipped with 2.4.7 has a broken dependency, unfortunately, so it won't load. Try to replace it with the one we have in the repo right now: https://github.com/Itseez/opencv/blob/2.4/3rdparty/ffmpeg/opencv_ffmpeg.dll.
Updated by Victor Kocheganov over 11 years ago
- Assignee set to Daniel Sturm
- Category set to build/install
Updated by Steven Puttemans over 11 years ago
Hi Viktor,
Since the correct dll is supplied in the current 2.4 branch, this can be closed right?
Reopen if i am not correct about this :)
- % Done changed from 0 to 100
- Assignee changed from Daniel Sturm to Victor Kocheganov
- Status changed from New to Done