Settings specific to the MPEG encoding quantize matrix.
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Settings for how the I, P, and B picture should be encoded.
-[MPEG Settings]
- Blocks
- MPEG predicts motion between frames in the temporal direction, and then uses discrete cosine transforms (DCT) to organize the redundancy in the spatial directions.
The matrices are 8x8. The "intrablock" matrix if for the "I" frame which uses no previous
temporal data. The "non-intrablock" matrix is use for the "P" and "B" frames.
The matrices must be 8x8.
Matrix Templates- Several matrices are included in the templates pull-down. Custom matrices templates can be added or removed by the "Save" and "Delete" buttons. Normally, this should set to "Default".
"Save" Button- Add a matrix template.
"Delete" Button- Remove a matrix template.
Output YUV data as basic YCbCr, not CCIR601- Enabling this cause the 8-bit value for the components to be of a value between 0 and 255 in YCbCr, and not the CCIR601 values of 16 to 235.
This is usually disabled.
Use floating point DCT- DCT means discrete cosine transform. The MPEG encoder uses DCT during encoding.
Using this reduces the DCT error and stabilizes the video; however, it increases the time it takes to encode unless one's processor has a SSE unit.
Even though this option increases the encode time, it's a good idea to have it enabled.
No motion search for still picture part by half pixel- This changes how the encode predicts motion.
This eliminates any blurring in still frames; however, slight motion may also not be detected.
Soften block noise- This can help clean up block noise with obvious edges caused by scene of rapid motion with an
insufficient bit rate.
Set the shading intensity value for the blocks to be between 0 and 100. 100 is the strongest noise reduction, but the picture will become blurred.
The best option is to raise the bitrate, but for cases that one can't, such as VCDs, this option will suffice.
"OK" Button- Close the window and save the new settings.
"Cancel" Button- Close the window and discard any changes.