detc[=var1=value1:var2=value2:...] †
逆テレシネ。フィルムのフレームレート（24fps）の奇麗なノンインターレース映像の復元を試みる。
MPlayer/MEncoderに最初に実装された、単純な逆テレシネフィルタ。可能な限りテレシネの3：2パターンを固守する。完璧なテレシネ処理をされた素材に向く。そうした素材ではかなりのノイズが有っても大丈夫だが、ポストテレシネ編集*1された素材には向かない。
多くの場合、ivtc,pullup,filmdint等の方が良い結果になるため、このフィルタの開発は停止した。
設定項目は以下の通り。（略）
原文
Attempts to reverse the 'telecine' process to re- cover a clean, non-interlaced stream at film fram- erate. This was the first and most primitive in- verse telecine filter to be added to MPlayer/MEn- coder. It works by latching onto the telecine 3:2 pattern and following it as long as possible. This makes it suitable for perfectly-telecined material, even in the presence of a fair degree of noise, but it will fail in the presence of complex post-telecine edits. Development on this filter is no longer taking place, as ivtc, pullup, and filmdint are better for most applications. The following arguments (see syntax above) may be used to control detc's behavior:
<dr>
Set the frame dropping mode.
0: Do not drop frames to maintain fixed output framerate (default).
1: Always drop a frame when there have been no drops or telecine merges in the past 5 frames.
2: Always maintain exact 5:4 input to output frame ratio.
NOTE: Use mode 1 or 2 with MEncoder.
<am>
Analysis mode.
0: Fixed pattern with initial frame num- ber specified by <fr>.
1: aggressive search for telecine pat- tern (default)
<fr>
Set initial frame number in sequence. 0-2 are the three clean progressive frames; 3 and 4 are the two interlaced frames. The default, -1, means 'not in telecine se- quence'. The number specified here is the type for the imaginary previous frame be- fore the movie starts.
<t0>, <t1>, <t2>, <t3>
Threshold values to be used in certain modes.
