Suggest mpeg compression on video and guide to clear the error mentioned below. Mpeg compression on video

5 次查看（过去 30 天）
Aberna P
Aberna P 2023-4-25
回答： Piyush Dubey 2023-9-15
Zigzag.m
for x = 0:((rowZigZag/(8*index))-1)
for y = 0:((columnZigZag/(8*index))-1)
Line 21: if(indicationIndex(x+1,y+1) ~= 1)
% Extracts 8x8 block which needs to be processed.
block = inputMatrix((x*8*index)+1:(x+1)*8*index, (y*8*index)+1:(y+1)*8*index);
Encoder.m
Line 217: [currentLumaDC, zigZagCurrentLumaAC] = zigZag(YQuantized, indicationMatrix, 2);
[currentCbDC, zigZagCurrentCbAC] = zigZag(CbQuantized, indicationMatrix, 1);
[currentCrDC, zigZagCurrentCrAC] = zigZag(CrQuantized, indicationMatrix, 1);
Error:
Index in position 2 exceeds array bounds (must not exceed 1).
Error in zigZag (line 21)
if(indicationIndex(x+1,y+1) ~= 1)
Error in Encoder (line 217)
[currentLumaDC, zigZagCurrentLumaAC] = zigZag(YQuantized, indicationMatrix, 2);

请先登录，再回答此问题。

采纳的回答

Piyush Dubey
Piyush Dubey 2023-9-15
Hi Aberna,
I understand that you are attempting to perform mpeg compression on video files but are encountering the “Index in position 2 exceeds array bounds.” error.
The error you are experiencing in the "Encoder.m" file suggests that there is an issue with the dimensions of the "indicationIndex" matrix. Specifically, the value “y+1” unexpectedly exceeds the range and fails to read the data. To address this issue, the code should be debugged, verifying the state and dimensions of the matrix. You may need to perform reshaping operations to ensure effective data access. Other errors mentioned in the console are likely stemming from the error on ‘line 21’.
Please refer to the following MathWorks documentation and File Exchange repository links for more information on MPEG compression and reshaping matrices:
  1. https://www.mathworks.com/help/vision/ug/video-compression.html
  2. https://www.mathworks.com/matlabcentral/fileexchange/11291-mpeg-compression
  3. https://www.mathworks.com/help/matlab/ref/reshape.html
Hope this helps.

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Video Formats and Interfaces 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by