[MPlayer-users] PAL interlacing

[Vladimir Mosgalin]

On Fri, 23 Jan 2004, D Richard Felker III wrote:

DRFI>But normal telecine (3:2 pulldown) doesn't occur in PAL. You might
DRFI>find a few (very rare) PAL dvds with 3:2:2:2:2:2:2:2:2:2:2:2 pulldown
DRFI>(12 frames that look good followed by 11 that look interlaced, and
DRFI>repeating). I would expect this may be the case in "The Wall" since
DRFI>speeding up the movie from 24 fps to 25 fps would damage the musical
DRFI>content. Anyway -vf pullup can repair this sort of pulldown (but every
DRFI>24th frame will be duplicated) or -vf filmdint might work.

Thanks, it seems that your guess was right. The length of the PAL & NTSC
versions is the same. But there seems to be no "fair" progressive
frames, they are just "less interlaced", so to say. When watching video
by frames, it often looks like interlaced and non-interlaced (or much
less interlaced) frames go one by one.
pullup & filmdint work and remove interlacing in most scenes, not in
all, however, but ghosts present on any motion. It looks much better,
this way, though, however NTSC version doesn't seem have those
artifacts.

If you have time to look, I will upload 5M (about 4s) fragment which
shows these effects.

Also, pullup & filmdint filters make video jerky with mplayer; original
video was OK. With mencoder, they both generate duplicate frames message
when -ofps is higher than ~22fps and skip frame when it is lower than
20fps, both of them in between.  There seems to be no good -ofps which
gives no such frames. Here is part of output from pullup (output from
filmdint is nearly the same) without -ofps:

Pos:   0,4s     14f ( 6%)   0fps Trem:   0min   4mb  A-V:0,012 [0:0]
1 duplicate frame(s)!
Pos:   0,5s     16f ( 6%)   0fps Trem:   0min   4mb  A-V:0,020 [0:0]
1 duplicate frame(s)!
Pos:   0,9s     27f ( 6%)   0fps Trem:   0min   9mb  A-V:0,024 [0:448]
1 duplicate frame(s)!
Pos:   1,2s     37f ( 6%)  29fps Trem:   0min  13mb  A-V:0,004 [4856:448]
1 duplicate frame(s)!
Pos:   1,3s     39f ( 6%)  29fps Trem:   0min  13mb  A-V:0,006 [4770:448]
1 duplicate frame(s)!
Pos:   1,4s     40f ( 6%)  29fps Trem:   0min  13mb  A-V:0,006 [4630:448]
1 duplicate frame(s)!
Pos:   1,8s     50f ( 6%)  28fps Trem:   0min  18mb  A-V:0,014 [4920:448]
1 duplicate frame(s)!
Pos:   1,8s     52f ( 6%)  28fps Trem:   0min  19mb  A-V:0,015 [4877:448]
1 duplicate frame(s)!
Pos:   2,2s     62f ( 6%)  28fps Trem:   0min  23mb  A-V:0,022 [4932:448]
1 duplicate frame(s)!
Pos:   2,3s     63f ( 6%)  28fps Trem:   0min  23mb  A-V:0,023 [4846:448]
1 duplicate frame(s)!
Pos:   2,8s     75f ( 6%)  27fps Trem:   0min  28mb  A-V:0,030 [4968:448]
1 duplicate frame(s)!
Pos:   3,2s     85f ( 6%)  27fps Trem:   0min  33mb  A-V:0,026 [5015:448]
1 duplicate frame(s)!
Pos:   3,2s     87f ( 6%)  27fps Trem:   0min  33mb  A-V:0,023 [4975:448]
1 duplicate frame(s)!
Pos:   3,3s     88f ( 6%)  28fps Trem:   0min  33mb  A-V:0,022 [4915:448]
1 duplicate frame(s)!
Pos:   3,7s     98f ( 6%)  27fps Trem:   0min  39mb  A-V:0,020 [5110:448]
1 duplicate frame(s)!
Pos:   3,8s    100f ( 6%)  27fps Trem:   0min  39mb  A-V:0,021 [5087:448]
1 duplicate frame(s)!
Pos:   4,2s    110f ( 6%)  27fps Trem:   0min  45mb  A-V:0,026 [5212:448]
1 duplicate frame(s)!
Pos:   4,2s    112f ( 6%)  27fps Trem:   1min  45mb  A-V:0,027 [5207:448]
1 duplicate frame(s)!
Pos:   4,3s    113f ( 6%)  27fps Trem:   1min  45mb  A-V:0,027 [5159:448]
1 duplicate frame(s)!
Pos:   4,7s    123f ( 6%)  27fps Trem:   1min  52mb  A-V:0,033 [5388:448]
1 duplicate frame(s)!
Pos:   4,8s    125f ( 6%)  27fps Trem:   1min  52mb  A-V:0,035 [5362:448]
1 duplicate frame(s)!

-- 

Vladimir