FFmpeg: Changing Inter Portion Values in the Matrix for FFvfw

poerschr · #1 02-19-2004, 04:23 PM

Kwag asked:

Quote:

I want you to try something. Because the DCT precision in this CODEC is only 8 bits, change ALL values on the INTER portion (right side) of the matrix to "16" (the standard values for MPEG inter values).
So now the "KVCD Notch Matrix" will work only on the INTRA part.
Your encoding speed will now be lower (more frequencies are now being encoded), but the quality and MAX bitrate should be higher.
Tell me your results

Did anyone try this??

Thank You.

kwag · #2 02-19-2004, 07:07 PM

Quote:

Originally Posted by poerschr

Did anyone try this??

Yep. I did.
Result is larger file size, for the same quality.
BTW, that post was before we changed the encoding mode.

-kwag

poerschr · #3 02-19-2004, 08:12 PM

Once again...thank you...