Dark blocks in veryslow and placebo preset with Authors.avs

[alwa]

Hi,
i recently did some testing with x264 and i found something strange. For my tests i used a modified version of the Authors.avs from the Avisynth example directory:

ovText = "AviSynth Authors:"+chr(13)+
\ "----------------------------"+chr(13)+
\ "Ben Rudiak-Gould"+chr(13)+
\ "Klaus Post"+chr(13)+
\ "Richard Berg"+chr(13)+
\ "Dividee"+chr(13)+
\ "Ian Brabham"+chr(13)+
\ "David Pierre"+chr(13)+chr(13)+
\ "Documentation:"+chr(13)+
\ "----------------------------"+chr(13)+
\ "Wilbert Dijkhof"+chr(13)+
\ "Jonathan Ernst"+chr(13)+
\ "Ernst Peche"+chr(13)+
\ "Alexander Balakhnin"+chr(13)+
\ "Alex_e_Basta"+chr(13)+
\ "Arne Stäcker"+chr(13)+chr(13)+
\ "Contributions by:"+chr(13)+
\ "----------------------------"+chr(13)+
\ "Avery Lee, Milan, Naoki Shibata, "+chr(13)+
\ "Peter Pawlowski, Olli Parviainen,"+chr(13)+
\ "Nicolas Capens, DevIL team,"+chr(13)+
\ "Donald Graft, poptones, ARDA"+chr(13)+
\ "Kevin Atkinson, tritical, many more..."+chr(13)+chr(13)+
\ "Thanks to:"+chr(13)+
\ "----------------------------"+chr(13)+
\ "Everyone contributing to the project,"+chr(13)+
\ "Doom9 & team, kwag, stickboy"+chr(13)+
\ ""


Blankclip(length=128, width=32,height=32, fps=25)
converttoyuy2()
Coloryuv(showyuv=true)
bg = loop(last + reverse(), 10)

c = framecount(bg)
t_mask = messageclip(ovText, height=c).converttoyv12().coloryuv(levels="tv->pc").trim(0,1)
t_blank = blankclip(t_mask, color=$ffffff)

t_mask_bl = t_mask.blur(1.0).blur(1.0).blur(1.0)

overlay(bg, t_mask_bl, mode="subtract")
overlay(t_blank, mode="blend", mask=t_mask)

frameevaluate("ol_x_offset = 40")
frameevaluate("ol_y_offset = 256 - (current_frame)")

fadeio(15)
trim(0,499)
converttoyv12()


When i encode the script with defaults everything is fine, but encodes with the veryslow or the placebo preset some dark blocks flashing up at the edges.

http://img5.imagebanana.com/img/oyktjl65/snap.jpg.png

Can anyone recreate this behaviour? Is this a bug of x264 :confused: .

I used the x264.nl unpatched build and JEEB's build of r1210 with the same result. My processor is a C2Q 9550 not overclocked.
Commandline:
x264.exe --preset veryslow -o out.mkv Authors.avs

Thanks in advance.

[Underground78]

I can reproduce this behaviour.

The blocks are visible with --preset veryslow but they seems to disappear when I add --b-adapt 1 or --subme 9 or --trellis 1 ... I hope it can help a bit to find the cause.

[MasterNobody]

Probably, it is already known and locally fixed bug of --subme 10.

Oops. It doesn't fix this. Then it is something other.

[LoRd_MuldeR]

I can reproduce the problem too. Doesn't look like expected behavior. Sample here:

http://www.mediafire.com/file/y2zqzimjywq/authors.7z

[Betsy25]

Does it happen with a non -mb-tree version too ?

[Underground78]

It seems it doesn't ...

The blocks are visible with --preset veryslow but they seems to disappear when I add -b 7 or --b-adapt 1 or --subme 9 or --trellis 1 or --no-mbtree [...]

[alwa]

It does happen with mbtree turned off, at least in my tests. But it occurs at different positions in the video.http://img5.imagebanana.com/img/tzkwicd/snapnombtree.png

[Underground78]

Damm, you are right. I've corrected my post ...

[Groucho2004]

It does happen with mbtree turned off, at least in my tests. But it occurs at different positions in the video.http://img5.imagebanana.com/img/tzkwicd/snapnombtree.png

Confirmed.

I just tried r1195 with preset "slower" - bitrate is a bit higher but it does not have that problem at all.

Edit: Ok, tried r1195 with preset "placebo" - the blocks are even worse than with r1210. Weird.

[MasterNobody]

It is --subme 10 bug (but it need little bit more to fix it than I think before).

[Daemon404]

I also noticed this in one encode of mine, but I completely forgot about it till now.

Screenshot:

http://xs842.xs.to/xs842/09341/brocks506.png

x264 settings (I did not save my exact parameters):

x264 - core 69 r1198M a1ed468 - H.264/MPEG-4 AVC codec - Copyleft 2003-2009 - http://www.videolan.org/x264.html - options: cabac=1 ref=16 deblock=1:-2:-1 analyse=0x3:0x133 me=tesa subme=10 psy=1 psy_rd=1:0.0 mixed_ref=1 me_range=24 chroma_me=1 trellis=2 8x8dct=1 cqm=0 deadzone=21,11 chroma_qp_offset=-4 threads=6 nr=0 decimate=0 mbaff=0 bframes=16 b_pyramid=0 b_adapt=2 b_bias=0 direct=3 wpredb=1 keyint=300 keyint_min=30 scenecut=40 rc_lookahead=250 rc=2pass mbtree=1 bitrate=900 ratetol=1.0 qcomp=0.60 qpmin=10 qpmax=51 qpstep=4 cplxblur=20.0 qblur=0.5 ip_ratio=1.40 aq=1:0.50

It should also be noted that this occurred during a fade, and was not there upon re-encode.

[Dark Shikari]

Known issue; already fixed locally.

[creamyhorror]

Just curious, but for what revisions has this bug existed?

[Dark Shikari]

Just curious, but for what revisions has this bug existed?Only with QPRD, since it was committed.

Also, I apologize for all the stupid bugs lately, so a nice gift is coming in r1209.

[Underground78]

1219 maybe ? 1209 seems to be : "Add no-mbtree to fprofile (and fix pyramid in fprofile)" ...

[moviefan]

Known issue; already fixed locally.

Locally means not yet commited to the repository? Thus not included in any of the currently compiled versions?

[microchip8]

Locally means not yet commited to the repository? Thus not included in any of the currently compiled versions?

what else do you think locally means?

[Dark Shikari]

1219 maybe ? 1209 seems to be : "Add no-mbtree to fprofile (and fix pyramid in fprofile)" ...Make that 1213, I can't count.

[juGGaKNot]

On the devs pc and not in the git i guess.

[Fr4nz]

Only with QPRD, since it was committed.

Also, I apologize for all the stupid bugs lately, so a nice gift is coming in r1209.

Why apologize? You're still the best :D

[juGGaKNot]

Why apologize? You're still the best :D

He just finished a 10l cola and now thing will be back to normal + wp

[ajp_anton]

Only with QPRD, since it was committed.

Also, I apologize for all the stupid bugs lately, so a nice gift is coming in r1209.Does that mean that you have a few "nice gifts" that you hide from the public until you do something stupid and need them to calm people down? =)

[Dark Shikari]

Does that mean that you have a few "nice gifts" that you hide from the public until you do something stupid and need them to calm people down? =)Nah, I just spent the past 5 days cooking up a surprise ;)

[juGGaKNot]

wp + a gift ? you know how to charm us.

[shon3i]

Also, I apologize for all the stupid bugs lately, so a nice gift is coming in r1209. Slices support, weighted p prediction? :)

[Underground78]

If I'm not mistaken, revision 1213 is Lookahead VBV (http://git.videolan.org/gitweb.cgi?p=x264.git;a=commit;h=1b6086ceb0c346c959a68478b9c36284fbdd5872).

Edit : Link to the announcement thread : x264 development: Lookahead VBV (http://forum.doom9.org/showthread.php?p=1315808#post1315808)

[creamyhorror]

Nah, I just spent the past 5 days cooking up a surprise ;)
Looking forward to it. Thanks for all the hard work.

[roozhou]

He just finished a 10l cola and now thing will be back to normal + wp

Could anybody explain to me what does "10l", "100l" mean? I have seen them many times in x264 and ffmpeg repository.

[Underground78]

See here (http://forum.doom9.org/showthread.php?p=1310034#post1310034) and here (http://forum.doom9.org/showthread.php?p=1218259#post1218259) ...

[LoRd_MuldeR]

Could anybody explain to me what does "10l", "100l" mean? I have seen them many times in x264 and ffmpeg repository.

http://forum.doom9.org/showpost.php?p=1310035&postcount=736

[Jenyok]

Another Authors2.avs script...
For your use...
Any your sentences and critics are welcomed !!!
.

# Authors2.avs
#

LoadPlugin("C:\PROGRAM FILES\AVISYNTH 2.5\PLUGINS\GSCRIPT_11\gscript.dll")



ovText = "AviSynth Authors:"+chr(13)+
\ "----------------------------"+chr(13)+
\ "Ben Rudiak-Gould\n"+chr(13)+
\ "Klaus Post"+chr(13)+
\ "Richard Berg"+chr(13)+
\ "Dividee"+chr(13)+
\ "Ian Brabham"+chr(13)+
\ "David Pierre\n"+chr(13)+
\ "Documentation:"+chr(13)+
\ "----------------------------"+chr(13)+
\ "Wilbert Dijkhof"+chr(13)+
\ "Jonathan Ernst"+chr(13)+
\ "Ernst Peche"+chr(13)+
\ "Alexander Balakhnin"+chr(13)+
\ "Alex_e_Basta"+chr(13)+
\ "Arne Stфcker"+chr(13)+chr(13)+
\ "Contributions by:"+chr(13)+
\ "----------------------------"+chr(13)+
\ "Avery Lee, Milan, Naoki Shibata, "+chr(13)+
\ "Peter Pawlowski, Olli Parviainen,"+chr(13)+
\ "Nicolas Capens, DevIL team,"+chr(13)+
\ "Donald Graft, poptones, ARDA"+chr(13)+
\ "Kevin Atkinson, tritical, many more..."+chr(13)+chr(13)+
\ "Thanks to:"+chr(13)+
\ "----------------------------"+chr(13)+
\ "Everyone contributing to the project,"+chr(13)+
\ "Doom9 & team, kwag, stickboy,"+chr(13)+
\ "Jenyok & C°\n"
# \ "Jenyok & C°"



function MessageClip2(clip c, string text, int "x", int "y", int "dy", int "first_frame", int "last_frame", string "font", \
float "size", int "text_color", int "halo_color", int "align", int "spc", \
float "font_width", float "font_angle", bool "interlaced", int "back_color", string "pixel_type")
{
last = c
dy = Default(dy, size)
y = Default(y, int(size))
pixel_type = Default(pixel_type, "YUY2")
text_color = Default(text_color, $FFFFFF) # White color text by default...
back_color = Default(back_color, $000000) # Black color background by default...
StrLen2 = StrLen(text)
StrChr13 = String(Chr(13))
StrSlashN = "\n" # As C++ new line string
ClipLength = 2
Str1 = "" # Temporary string
Str2 = "" # Temporary string
StrSum = 0 # Number of substrings in string
i = 1 # Index i
j = 1 # Index j
k = 1 # Index k

# Count SubStrings in String...
# End of SubString are "\n" or/and Chr(13), see Code function...
#
GScript("""
while (i <= StrLen2)
{
Str1 = MidStr(text, i, 1)
Str2 = MidStr(text, i, 2)
if (Str2 == StrSlashN) {
Str1 = StrChr13
i = i + 1
} # End of if ()
if ((Str1 == StrChr13) || (i == StrLen2)) {
StrSum = StrSum + 1
} # End of if ()
i = i + 1
Str1 = ""
Str2 = ""
} # End of while ()
""") # End of GScript ()

# Calculate Height of Video Clip...
#
CHeight = int(StrSum * size)
CHeight = CHeight + int((StrSum + 1) * dy * 0.125) # 0.125 pixel's interval, see documentation to BlankClip() function ...
BlankClip(last, length=ClipLength, height=CHeight, color=back_color, pixel_type=pixel_type)

# Insert SubStrings to Video with SubTitle() function...
#
Str1 = "" # Temporary string
Str2 = "" # Temporary string
i = 1 # Index i
GScript("""
while (i <= StrLen2)
{
Str1 = MidStr(text, i, 1)
Str2 = MidStr(text, i, 2)
if (Str2 == StrSlashN) {
Str1 = StrChr13
i = i + 1
} # End of if ()
if ((Str1 == StrChr13) || (i == StrLen2)) {
if ((Str1 != StrChr13) && (i == StrLen2)) {
k = k + 1
} # End of if ()
Str1 = ""
Str1 = MidStr(text, j, k - 1)
SubTitle(last, Str1, x=x, y=y, first_frame=first_frame, last_frame=last_frame, \
font=font, size=size, text_color=text_color, halo_color=halo_color, \
align=align, spc=spc, font_width=font_width, font_angle=font_angle, \
interlaced=interlaced)
j = i + 1
k = 0
y = y + dy
} # End of if ()
i = i + 1
k = k + 1
Str1 = ""
Str2 = ""
} # End of while ()
""") # End of GScript ()
return last
}





# Constants
#
W768 = 768 # Clip size Width
H576 = 576 # Clip size Height
FPSVideo = 25.0
FPSDenominator = 1
PixelType = "YUY2"
NChannels = 2
AudioRate = 44100

LengthClip = 2048 # !!! You must "select" this value for scrolling all text in video clip from bottom to top ...

BackGround = $000000 # Background color ...
TextColor = $FFFFFF # White (Yellow) or other TEXT color for scrolling ...

# Constants
#
Speed = "" # High or Low or nothing ...
SpeedValue = 4 # Must be betwwen 1..20, maybe more than 20 ...

# Constants
#
ShiftX = 8
ShiftY = 6


Speed = UCase(Speed)
SpeedValue = (SpeedValue <= 1) ? 1 : (SpeedValue > 20) ? 20 : SpeedValue


BlankClip(length=LengthClip, width=W768, height=H576, fps=FPSVideo, fps_denominator=FPSDenominator, \
audio_rate=AudioRate, channels=NChannels, pixel_type=PixelType, color=BackGround)


# ONLY For demonstration ...
#
#ColorYUV(showyuv=true).Spline64Resize(W768, H576, src_width=Width(last), src_height=Height(last)) # W768 x H576


t_mask = MessageClip2(last, ovText, size=30, align=8, text_color=TextColor, \
back_color=BackGround, pixel_type=PixelType).ColorYUV(levels="tv->pc").Trim(0, 1) # See documentation to SubTitle() function ...

t_blank = BlankClip(t_mask, color=TextColor)
t_mask_bl = t_mask.blur(1.0).blur(1.0).blur(1.0)

Overlay(last, t_mask_bl, mode="subtract")
Overlay(last, t_blank, mode="blend", mask=t_mask)


#FrameEvaluate("ol_x_offset = 20") # No more times needed ...

(Speed == "HIGH") ? \
FrameEvaluate("ol_y_offset = H576 - ((current_frame) * SpeedValue)") : \
(Speed == "LOW") ? \
FrameEvaluate("ol_y_offset = H576 - ((current_frame) / SpeedValue)") : \
FrameEvaluate("ol_y_offset = H576 - (current_frame)")


#Spline64Resize(W768-ShiftX, H576-ShiftY, src_width=Width(last), src_height=Height(last))
#BClip=BlankClip(length=LengthClip, width=W768, height=H576, fps=FPSVideo, fps_denominator=FPSDenominator, \
# audio_rate=AudioRate, channels=NChannels, pixel_type=PixelType, color=BackGround)
#Overlay(BClip, last, 0, ShiftY / 2)



#last = t_mask # For debuging ...
#ConvertToYUY2() # For debuging ...

.
What is needed (wanted) more ?
There is needed Scrolling Text in frame window not from bottom frame edge to top frame edge,
but from bottom frame edge with (+) Shift Y to top frame edge without (-) Shift Y !!!
I didn't found directly decision of this problem...
.
See comments in Code...
.
#Spline64Resize(W768-ShiftX, H576-ShiftY, src_width=Width(last), src_height=Height(last))
#BClip=BlankClip(length=LengthClip, width=W768, height=H576, fps=FPSVideo, fps_denominator=FPSDenominator, \
# audio_rate=AudioRate, channels=NChannels, pixel_type=PixelType, color=BackGround)
#Overlay(BClip, last, 0, ShiftY / 2)