An output stream which takes a sequence of images and writes a video file in any of a given of compatible formats.
The output file is open when calling "open", and it's closed at destructor or after calling "close".
Example of usage:
There are two methods for adding frames to the video:
Definition at line 41 of file CVideoFileWriter.h.
#include <mrpt/vision/CVideoFileWriter.h>
Public Member Functions | |
CVideoFileWriter () | |
Default constructor, which does not open any file. More... | |
virtual | ~CVideoFileWriter () |
Destructor. More... | |
bool | open (const std::string &out_file, double fps, const mrpt::utils::TImageSize &frameSize, const std::string &fourcc=std::string(""), bool isColor=true) |
Open a file for writing the video. More... | |
void | close () |
Finish the file writing and close the file output. More... | |
bool | isOpen () const |
Return true if already successfully open with open() and not closed yet. More... | |
const CVideoFileWriter & | operator<< (const mrpt::utils::CImage &img) const |
Write image to the video file. More... | |
bool | writeImage (const mrpt::utils::CImage &img) const |
Write image to the video file (method function, alternative to the operator <<). More... | |
Private Attributes | |
mrpt::utils::void_ptr_noncopy | m_video |
A pointer to CvVideoWriter. More... | |
mrpt::utils::TImageSize | m_img_size |
A copy of the video size. More... | |
mrpt::vision::CVideoFileWriter::CVideoFileWriter | ( | ) |
Default constructor, which does not open any file.
|
virtual |
Destructor.
void mrpt::vision::CVideoFileWriter::close | ( | ) |
Finish the file writing and close the file output.
bool mrpt::vision::CVideoFileWriter::isOpen | ( | ) | const |
Return true if already successfully open with open() and not closed yet.
bool mrpt::vision::CVideoFileWriter::open | ( | const std::string & | out_file, |
double | fps, | ||
const mrpt::utils::TImageSize & | frameSize, | ||
const std::string & | fourcc = std::string("") , |
||
bool | isColor = true |
||
) |
Open a file for writing the video.
out_file | The video file to create for output. |
fourcc | The video codec, as a string. See notes below. \paam fps The video FPS (frames per seconds). |
frameSize | The size of the video frames. All subsequent images must be of this size. |
isColor | Set to false to create a grayscale video. |
const CVideoFileWriter& mrpt::vision::CVideoFileWriter::operator<< | ( | const mrpt::utils::CImage & | img | ) | const |
Write image to the video file.
std::exception | On any error |
bool mrpt::vision::CVideoFileWriter::writeImage | ( | const mrpt::utils::CImage & | img | ) | const |
Write image to the video file (method function, alternative to the operator <<).
|
private |
A copy of the video size.
Definition at line 45 of file CVideoFileWriter.h.
|
private |
A pointer to CvVideoWriter.
Definition at line 44 of file CVideoFileWriter.h.
Page generated by Doxygen 1.8.15 for MRPT 1.4.0 SVN: at Sat Aug 3 20:09:00 UTC 2019 |