Can't write .mp4 files - Could not open codec 'libx264': Unspecified error
Hi everyone!
Days ago I installed the latest 2.4 branch withou ffmpeg. I'm using Ubuntu 14.04 and I don't have at all ffmpeg in my Virtual Machine.
I want to write .mp4 video files and the input files are also .mp4. The input codec is avc1.
I can't obtain any results, the errors can be seen below.
Error:
[libx264 @ 0x9357bc0] broken ffmpeg default settings detected
[libx264 @ 0x9357bc0] use an encoding preset (e.g. -vpre medium)
[libx264 @ 0x9357bc0] preset usage: -vpre <speed> -vpre <profile>
[libx264 @ 0x9357bc0] speed presets are listed in x264 --help
[libx264 @ 0x9357bc0] profile is optional; x264 defaults to high
Could not open codec 'libx264': Unspecified error
Could not open the output video for write: /home/margarida/exams_2014/Output.mp4
Simplified Code:
int main(int argc, char *argv[]) {
VideoWriter outputVideo;
// Get Codec Type
int ex = static_cast<int>(cap.get(CV_CAP_PROP_FOURCC));
// Transform from int to char via Bitwise operators
char EXT[] = { (char) (ex & 0XFF), (char) ((ex & 0XFF00) >> 8),
(char) ((ex & 0XFF0000) >> 16), (char) ((ex & 0XFF000000)
>> 24), 0 };
// Acquire input size
Size S = Size((int) cap.get(CV_CAP_PROP_FRAME_WIDTH),
(int) cap.get(CV_CAP_PROP_FRAME_HEIGHT));
cout << "Input codec type: " << EXT << endl;
// Open the output
outputVideo.open(newname, ex, cap.get(CV_CAP_PROP_FPS), S, true);
if (!outputVideo.isOpened()) {
cout << "Could not open the output video for write " << endl;
return -1;
}
while (true) {
cap >> frame;
if (frame.empty()) {
cerr << "nao apanhou frame" << endl;
break;
}
cinzento = acinzentar(frame);
imshow("Cinzento", cinzento);
outputVideo.write(cinzento);
switch(waitKey(10)){
case 27:
//'esc' has been pressed (ASCII value for 'esc' is 27)
//exit program.
return 0;
}
}
return 0;
}
My cmake was this:
cmake -D WITH_TBB=ON -D CMAKE_INSTALL_PREFIX=/usr/local -D BUILD_NEW_PYTHON_SUPPORT=ON -D WITH_V4L=ON -D INSTALL_C_EXAMPLES=ON -D INSTALL_PYTHON_EXAMPLES=ON -D BUILD_EXAMPLES=ON -D WITH_QT=ON -D WITH_OPENGL=ON -D WITH_VTK=ON -D WITH_FFMPEG=OFF -D WITH_IPP=OFF ..
Can anyone help solving my problem? Thanks in advance :)
If there is no solution please respond.
Is there any information missing? Please help!
Did you find out a solution to this one?