bouis
2nd December 2002, 02:21
Is there some function in any version of DVD2AVI which can produce a summary of which frames it found to be "FILM" and which "NTSC" beyond the "FILM 99%" in the "Statistics Window"?
I'm seeking a better way of removing the dreaded combed frames which occur in many non-100%-film movies around chapter points and in random places resulting from post-telecine editing. I'm using avisynth and CCE. Here's what I've learned so far:
DVD2AVI "Force Film" output is perfect on areas which it reports as "FILM," but it often causes problems with random combed frames, which, to my knowledge, it always reports as "NTSC" (but doesn't output correctly). Occasionally, poorly telecined material is reported as long sequences of "NTSC" which looses frames and plays "jerky" (with or without combing).
Decomb "Telecide(post=false) + Decimate" generally works well, but often errs on scenes with little or no movement, resulting in combed mouths and flickering candles on areas which "Force Film" works perfectly on. On occasion, it completely chokes, resulting in a sequence of combed frames throughout the rest of the scene, completely wrecking output that DVD2AVI detects as 100% film. Telecide(post=true) just covers up these errors by blurring the bad output. I've found that using "guide" with telecide is useless; it still errs on the same "FILM" scenes and often creates worse output when it finds a lone combed frame.
"Force Film" + "Telecide" (no decimate) is my own improvised solution to randomly occurring interlaced frames. When it encounters combed frames, it replaces them with duplicates of a previous (non-combed) frame. The problem is that it has the other shortcomings of "Force Film" and that Telecide+Decimate can often handle these combed frames better (without any duplicates in the output.)
A detailed log of what decisions DVD2AVI makes would be a great help for choosing which of these methods to employ. I really don't know how DVD2AVI's FILM/NTSC detection works, but it's clearly better than decomb's; it's a shame that decomb can't make use of it to ignore sections of the film which DVD2AVI finds as "FILM."
Is there some other method that I've missed? Anyone have any suggestions? Any input is appreciated.
I'm seeking a better way of removing the dreaded combed frames which occur in many non-100%-film movies around chapter points and in random places resulting from post-telecine editing. I'm using avisynth and CCE. Here's what I've learned so far:
DVD2AVI "Force Film" output is perfect on areas which it reports as "FILM," but it often causes problems with random combed frames, which, to my knowledge, it always reports as "NTSC" (but doesn't output correctly). Occasionally, poorly telecined material is reported as long sequences of "NTSC" which looses frames and plays "jerky" (with or without combing).
Decomb "Telecide(post=false) + Decimate" generally works well, but often errs on scenes with little or no movement, resulting in combed mouths and flickering candles on areas which "Force Film" works perfectly on. On occasion, it completely chokes, resulting in a sequence of combed frames throughout the rest of the scene, completely wrecking output that DVD2AVI detects as 100% film. Telecide(post=true) just covers up these errors by blurring the bad output. I've found that using "guide" with telecide is useless; it still errs on the same "FILM" scenes and often creates worse output when it finds a lone combed frame.
"Force Film" + "Telecide" (no decimate) is my own improvised solution to randomly occurring interlaced frames. When it encounters combed frames, it replaces them with duplicates of a previous (non-combed) frame. The problem is that it has the other shortcomings of "Force Film" and that Telecide+Decimate can often handle these combed frames better (without any duplicates in the output.)
A detailed log of what decisions DVD2AVI makes would be a great help for choosing which of these methods to employ. I really don't know how DVD2AVI's FILM/NTSC detection works, but it's clearly better than decomb's; it's a shame that decomb can't make use of it to ignore sections of the film which DVD2AVI finds as "FILM."
Is there some other method that I've missed? Anyone have any suggestions? Any input is appreciated.