open png 16bit sequence

[Santa]

I have to compress using x264 an image sequence of PNG 16 bpc

I'm actually not able to open it with an avs script.
How can i compress them? Is ther a particular plugin/script I should use?

Thank you

[feisty2]

use ffmpeg to convert them to a large single raw rgb file
then read it with rawreader

[Santa]

does it make sense?

ffmpeg -f image2 -i "J:\sintel-4k-png16\%08d.png" -start_number 1 -r 25 -vcodec rawvideo -pix_fmt rgb565 "J:\test.rgb"

also rawsource seems not being able to open 4k files (width too big)

[Santa]

tried with sashimi plugin and it opens the raw file but it looks like this:
http://i60.tinypic.com/15g76t2.png

[feisty2]

rgb565??
I don't think avisynth could handle something like that, shouldn't formats older than rgb24 be long gone by now?
btw....
16bpc=rgb48...not rgb565
rgb565=rgb16

[feisty2]

ffmpeg -f image2 -i "%d.png" -c:v rawvideo clip.rgb

MSB=RawReader("clip.rgb", "RGB", width, height, packing="16:0:8")
LSB=RawReader("clip.rgb", "RGB", width, height, packing="16:8:8")
StackVertical (MSB,LSB)
R=showred ("y8")
G=showgreen ("y8")
B=showblue ("y8")
dither_convert_rgb_to_yuv (R,G,B,matrix="2020",output="yv24",tv_range=true,lsb=true)
assumefps (# framerate)
dither_out ()

now it's ready to be encoded

[Santa]

ffmpeg -f image2 -i "%d.png" -c:v rawvideo clip.rgb

MSB=RawReader("clip.rgb", "RGB", width, height, packing="16:0:8")
LSB=RawReader("clip.rgb", "RGB", width, height, packing="16:8:8")
StackVertical (MSB,LSB)
R=showred ("y8")
G=showgreen ("y8")
B=showblue ("y8")
dither_convert_rgb_to_yuv (R,G,B,matrix="2020",output="yv24",tv_range=true,lsb=true)
assumefps (# framerate)
dither_out ()

now it's ready to be encoded

ffmpeg -f image2 -i "J:\sintel-4k-png16\%08d.png" -start_number 1 -c:v rawvideo "J:\test2.rgb"

LoadPlugin("D:\Software Video\MeGUI\tools\avisynth_plugin\\Sashimi.dll")
LoadPlugin("D:\Software Video\MeGUI\tools\avisynth_plugin\dither.dll")
LoadPlugin("D:\Software Video\MeGUI\tools\avisynth_plugin\mt_masktools-26.dll")
Import("D:\Software Video\MeGUI\tools\avisynth_plugin\dither.avsi")
MSB=RawReader("J:\test2.rgb", "RGB", 4096, 1744, packing="16:0:8")
LSB=RawReader("J:\test2.rgb", "RGB", 4096, 1744, packing="16:8:8")
StackVertical (MSB,LSB)
R=showred ("y8")
G=showgreen ("y8")
B=showblue ("y8")
dither_convert_rgb_to_yuv (R,G,B,matrix="2020",output="yv24",tv_range=true,lsb=true)
assumefps (25)
dither_out ()

http://i59.tinypic.com/2ywinpt.png

[feisty2]

dither_out is for 10bit x264 encoding
remove it and the preview seems normal?

[Santa]

nope:

http://i59.tinypic.com/atoemr.png

[feisty2]

yeah, that should be correct, add dither_out back to your script and encode it with x264, remember to add these commands
--input-depth 16 --output-csp i444 --input-csp i444 --profile high444

[Are_]

Why avisynth? do you really need to do any major editing to it?

x264 %08d.png -o out.mkv --fps 24/1

[Santa]

x264-10b.exe --tune animation --crf 18 --input-depth 16 --output-csp i444 --input-csp i444 --output "J:\test.h264" "J:\test.avs"
avs [info]: 8192x1744p 0:0 @ 25/1 fps (cfr)
x264 [warning]: frame MB size (512x109) > level limit (36864)
x264 [warning]: DPB size (6 frames, 334848 mbs) > level limit (3 frames, 184320 mbs)
x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
x264 [error]: malloc of size 366195488 failed
x264 [error]: x264_encoder_open failed

[Santa]

also megui asks me to convert to yv12 but also adding the line to avs script doesn't work

[Are_]

For such a frame size x264 allocates up to ~4.5GB of ram for me. How much available do you have?

[Santa]

5200MB more or less

[feisty2]

ignore whatever megui says
DO NOT add converttoyv12 at the end of the script
keep your script that way or the whole thing's gonna be messed up

[Are_]

Mmh... by any chance are you using 32bit x264?

[Santa]

ok with 64bit x264 and without converttoyv12 it works.

is it also possible to convert this source with 8bit x264 for comparison purposes?
how should i change the avs script? i've never used avisynth apart of what avs script creator of megui automatically create (adding just a few scripting lines like degrain etc.) so i don't really know what that avs script does...

thank you all again!!!

[feisty2]

dither_out ----> ditherpost (mode=6)