[Libav-user] Skipping H263's IDCT operation and extracting complete DCT

[Cavelier Jean-bernard]

Hello,
Is there a way to extract an H263 frame's DCT, in the complete form(as in before the IDCT operation) and not in coefficients form ? 
I know I can just reapply the DCT operation on my frame coefficients but my goal is to skip the IDCT operation entirely to avoid doing useless calculations.
Best regards
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