Some bugs, probably

[dubhater]

I noticed a few more things.

It should be vi2 instead of vi in these two places, because clip2 is allowed to have different resolution and colorspace/bit depth:

TIVTC/src/TIVTC/TDecimate.cpp

Line 349 in af18f2c

blendFrames(frame1, frame2, dst, a1, vi, env);

TIVTC/src/TIVTC/TDecimate.cpp

Lines 748 to 755 in af18f2c

	PVideoFrame dst = env->NewVideoFrame(vi);
	setBlack(dst, vi);
	if (retFrames <= -305)
	{
	if (retFrames <= -306 && se)
	env->ThrowError("TDecimate: mode 3 finished (early termination)!");
	sprintf(buf, "Mode 3: Last Actual Frame = %d", lastFrame);
	Draw(dst, 2, 1, buf, vi);

(vi comes from child, vi2 comes from clip2.)

---

GetRowSize returns the width in bytes, but dispatch_blend expects the width in pixels:

TIVTC/src/TIVTC/TDecimate.cpp

Line 2185 in af18f2c

width = src1->GetRowSize(plane);

---

blurFrame expects cpuFlags, not opt:

TIVTC/src/TIVTC/TDecimate.cpp

Lines 1105 to 1107 in a3d1354

	blurFrame(prevt, prev, 2, chroma, env, vit, opt);
	blurFrame(nextt, next, 2, chroma, env, vit, opt);

[pinterf]

Thanks, all is true of course.
The second one became

  const VideoInfo vi2 = !useclip2 ? child->GetVideoInfo() : clip2->GetVideoInfo();
  PVideoFrame dst = env->NewVideoFrame(vi2);
  setBlack(dst, vi2);
  if (retFrames <= -305)
  {
    if (retFrames <= -306 && se)
      env->ThrowError("TDecimate:  mode 3 finished (early termination)!");
    sprintf(buf, "Mode 3:  Last Actual Frame = %d", lastFrame);
    Draw(dst, 2, 1, buf, vi2);
  }

Are you porting?

[dubhater]

Yes.

[pinterf]

I suppose without yuy2 and using frame properties. Lucky vapoursynthers. :)

[dubhater]

Indeed.

And thank you for all your hard work making the code portable.

[pinterf]

Once in a life :)