Project Details
Platform:
-PC
Engine/Language:
-C++
Project:
-Individual project
-Personal
About
Auto Video Editor
Auto Video Editor is a small application with the purpose of removing frames which have a big difference between them such as when the camera is being panned around quickly.
Challenges
The main challenge which came with this project was using a new 3rd party library, ffmpeg. This was because I have never used this library, or any image/video processing library with C++ before. It was an enjoyable challenge to overcome. I learnt about the library by reading through the example code which was provided which contained all the relevant steps I wanted for this project.
Frame compare
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 | for (int y = 0; y < m_decCtx->height; y += prec) { for (int x = 0; x < rgbWidth; x += precWidth) { uint8_t r = tempFrame->data[0][y * tempFrame->linesize[0] + x]; uint8_t g = tempFrame->data[0][y * tempFrame->linesize[0] + x + 1]; uint8_t b = tempFrame->data[0][y * tempFrame->linesize[0] + x + 2]; rD += r / (double)255; gD += g / (double)255; bD += b / (double)255; } } // Normalise the red, green and blue values of the whole frame by the number of samplers taken. rD /= numSamples; gD /= numSamples; bD /= numSamples; if (a_compare) { // Get the difference between this frame and last frame. double rDiff = abs(rD - m_oldR); double gDiff = abs(gD - m_oldG); double bDiff = abs(bD - m_oldB); double diff = (rDiff + gDiff + bDiff) / 3; if (diff < m_minDiff) { m_minDiff = diff; } else if (diff > m_maxDiff) { m_maxDiff = diff; } m_avgDiff += diff; if (diff > m_frameCompare) { result = true; } } |
If you have any question or suggests about this project or any other project please do not hesitate to contract me. This is an area in which I would like to learn more in.