Snow encoding GUI

[MeteorRain]

Any introduction about 'snow'? what's the features?
interesting about this codec

regards!

[hellfred]

Originally Posted by MeteorRain

Any introduction about 'snow'? what's the features?
interesting about this codec

regards!

Snow is a wavelet-based video codec created by Michael Niedermayer, the main programmer of ffmpeg. Wavelet-based video codecs, snow and dirac are open source codecs of this kind - are supposed to have no blocking issues. The manpage of mplayer/mencoder (available at www.mplayerhq.hu under documentation as html or text file) has a description of all parameters, that can be used to encode with snow. Another short introduction to the snow codec can be found in mplayer sources (main/DOCS/tech/snow.txt). You can browse the cvs here

Hellfred

[Doom9]

@sugala: you have the GUI, why don't you see for yourself?

[MeteorRain]

Next job job15-1 is a video job. encoder commandline:
"H:\mp4\mplayer2005.06.09.Athlon-64\mencoder.exe" "H:\subgroup\final approach\ncop\VTS_01_1.avs" -ovc lavc -lavcopts vcodec=snow:vqscale=5:cmp=1:subcmp=1:mbcmp=1:qpel:vstrict=-2 -o "H:\subgroup\final approach\ncop\VTS_01_1.avi" -of avi -ffourcc SNOW
successfully set up video encoder and callbacks for job job15-1
----------------------------------------------------------------------------------------------------------

Log for job job15-1

============ Sorry, this file format is not recognized/supported =============
=== If this file is an AVI, ASF or MPEG stream, please contact the author! ===
Cannot open demuxer.
Output file should exist but was not found. Something went wrong while encoding
----------------------------------------------------------------------------------------------------------


i'm encoding an avs file (from dvdrip), but seems it don't support avs input? confused


EDIT==========
NO P/B frame supported???
i decode it using ffdshow, but i only see that all the frams are I frame... what's wrong?

[Doom9]

uh, first you report a complete failure (most likely completely unrelated to the GUI but a mencoder issue and those belong someplace else), then you have an encoded file?
And then job15-1.. that signifies a subsequent job, yet your commandline looks like a CQ job, so that doesn't make sense.

[MeteorRain]

job15-2 is a mkv-muxing job....
i feed a good avs file to the encoder, and it don't work.
but i feed a wmv9 avi file, it works.
so it doesn't support avs? =. =

i test it in command console:
AVS input:

D:\Documents and Settings\MeteorRain>"H:\mp4\mplayer2005.06.09.Athlon-64\mencode
r.exe" "H:\subgroup\final approach\ncop\VTS_01_1.avs" -ovc lavc -lavcopts vcodec
=snow:vqscale=1.00:qpel:v4mv:vstrict=-2 -o "H:\subgroup\final approach\ncop\VTS_
01.avi" -of avi -ffourcc SNOW -nosound
MEncoder dev-CVS-050609-00:54-3.4.4 (C) 2000-2005 MPlayer Team
CPU: Advanced Micro Devices  (Family: 8, Stepping: 0)
Detected cache-line size is 64 bytes
CPUflags: Type: 8 MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 0 SSE2: 0
Compiled for x86 CPU with extensions: MMX MMX2 3DNow 3DNowEx SSE SSE2

85 audio & 199 video codecs
File not found: 'frameno.avi'
Failed to open frameno.avi
success: format: 0  data: 0x0 - 0x112
============ Sorry, this file format is not recognized/supported =============
=== If this file is an AVI, ASF or MPEG stream, please contact the author! ===
Cannot open demuxer.

Exiting...

And for avi input:

D:\Documents and Settings\MeteorRain>"H:\mp4\mplayer2005.06.09.Athlon-64\mencode
r.exe" "H:\subgroup\final approach\ncop\ncop.avi" -ovc lavc -lavcopts vcodec=sno
w:vqscale=1.00:qpel:v4mv:vstrict=-2 -o "H:\subgroup\final approach\ncop\VTS_01_.
avi" -of avi -ffourcc SNOW -nosound
MEncoder dev-CVS-050609-00:54-3.4.4 (C) 2000-2005 MPlayer Team
CPU: Advanced Micro Devices  (Family: 8, Stepping: 0)
Detected cache-line size is 64 bytes
CPUflags: Type: 8 MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 0 SSE2: 0
Compiled for x86 CPU with extensions: MMX MMX2 3DNow 3DNowEx SSE SSE2

85 audio & 199 video codecs
File not found: 'frameno.avi'
Failed to open frameno.avi
success: format: 0  data: 0x0 - 0x4921000
AVI file format detected.
AVI_NI: No audio stream found -> no sound.
VIDEO:  [WMV3]  640x480  24bpp  23.976 fps  7125.1 kbps (869.8 kbyte/s)
[V] filefmt:3  fourcc:0x33564D57  size:640x480  fps:23.98  ftime:=0.0417
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1  (-1=autodetect) osd: 1
==========================================================================
Opening video decoder: [dmo] DMO video codecs
IMediaObject ERROR: 00AF9A40  could not open DMO DLL (0x0 : 0)
Failed to create DMO filter
ERROR: Could not open required DirectShow codec wmv9dmod.dll.
You need to upgrade/install the binary codecs package.
Go to http://mplayerhq.hu/homepage/dload.html
VDecoder init failed :(
Opening video decoder: [dmo] DMO video codecs
DMO dll supports VO Optimizations 0 1
DMO dll might use previous sample when requested
GetOutput r=0x0   size:921600  align:1
StreamCount r=0x0  1  1
Decoder supports the following formats: YV12 YUY2 UYVY YVYU RGB8 RGB555 RGB565 R
GB24 RGB32
Decoder is capable of YUV output (flags 0x1b)
VDec: vo config request - 640 x 480 (preferred csp: Packed YUY2)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is undefined - no prescaling applied.
videocodec: libavcodec (640x480 fourcc=574f4e53 [SNOW])
Using constant qscale = 1.000000 (VBR)
Selected video codec: [wmvdmo] vfm:dmo (Windows Media Video DMO)
==========================================================================
Forcing output fourcc to 574f4e53 [SNOW]
Writing AVI header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp h
eader.
ODML: Aspect information not (yet?) available or unspecified, not writing vprp h
eader.

regards!

[Doom9]

job15-2 is a mkv-muxing job....

Uh, there is no matroska support in MeGUI snow edition All the tests I did (see previous posts and links) were done with avisynth files.. clearly something is wrong with yours, but since you didn't post it or tested it in any other applications, the ball is fully in your court...

I'm using the http://www.aziendeassociate.it/cd//m...3.Athlon-64.7z mencoder build by the way.

[MeteorRain]

nvm, i'm using the full version LOL
and it was a misclick, so i just deleted the mkv muxing job before the encode

and then, what should i post?

and now, i'm downloading the version you give, and 'll try.

[Doom9]

and then, what should i post?

AviSynth script, and test the script in VirtualDub. Does the same script work for x264.exe? These are really basic error reporting things, they should be mandatory for a first post.

[chilledoutuk]

Hi doom do you plan to implement the 2 pass workaround or are you just going to wait for snow to be fixed?

[MeteorRain]

Originally Posted by Doom9

AviSynth script, and test the script in VirtualDub. Does the same script work for x264.exe? These are really basic error reporting things, they should be mandatory for a first post.

LoadPlugin("g:\dgmpgdec140b2\DGDecode.dll")
LoadPlugin("g:\avs\it.dll")
loadplugin("g:\avs\Convolution3D.dll")
MPEG2Source("VTS_01_1.d2v")
IT(fps=24,ref="TOP",blend=false,diMode=1)
bicubicresize(640,480,0.3333,0.3333)
Convolution3D(preset="AnimeHQ")

it works very well under any other condition, either in VDMod, or for x264.

and i used the new version of mencoder, and still don't work

[Doom9]

@chilledoutuk: I think you missed the new version.. the workaround is already implemented, and it worked well in my tests

mpeg2source("D:\DVDs\DVDVolume\VIDEO_TS\re-trailer.d2v")
crop(18,82,684,412)
LanczosResize(640,352)

Works just fine for me.. so you should a) try to reduce your script to find the offending line, then open a new thread with a title like "mencoder doesn't like avisynth input with xyz" (where xyz is the culprit you found), and make sure you put all pertinents facts in that thread (script, culprit, avisynth version, the fact that x264 works, and that you've tested it in VirtualDub (iirc it should be VirtualDub not VDubMod, there's a bit of a difference that seems to matter (check the main megui thread, berrinam once pointed it out)).

[MeteorRain]

avisource("tsq_re.avi", false).trim(0,100)

even this DOESN'T work!!!
orz...........

[Doom9]

a new build is out. It contains improvements and fixes in the bitrate calculator.

[Koti]

Originally Posted by chilledoutuk

Hi doom do you plan to implement the 2 pass workaround or are you just going to wait for snow to be fixed?

Possibly a 2 pass error in MeGui Snow Edition

1st pass generated by MeGuiSnow "C:\Program Files\Snow Encoder\mencoder.exe" "N:\DVD 1\History .avs" -ovc lavc -o NUL: -passlogfile "2pass.log" -lavcopts vcodec=snow:vqscale=5:vstrict=-2

Missing from 1st pass CLI sent to mencoder is the switch "vpass=1" . This caused the logfile never to be output explaining the 2nd pass failing.

[Doom9]

indeed, you are correct. I guess I must've had a valid logfile in my megui directory all along when I tested.

P.S. a few suggestions for your settings: SSD in all cases except for SAD, and don't use m4v.. it kills your speed and doesn't yield useful results at this point. And keep the number of predictors from previous frames at 0.. I think that about covers it (the author suggests those things for optimal results).

[Koti]

Pass 1 is set at a fixed value of vqscale=5 , would it be possible to allow adjustment of this as to get closer to the actual target quant on the 1st pass ?

Don't use it for 1st pass as CBR isn't implemented yet,use vqscale instead, and set it to a quantizer near the target average quant of the final encode.

thx

[Doom9]

Pass 1 is set at a fixed value of vqscale=5 , would it be possible to allow adjustment of this as to get closer to the actual target quant on the 1st pass ?

It is only a temporary workaround until libavcodec gets fixed. It's a two line thing.. changing the GUI isn't a two liner, plus then there's the problem with automated 2/3 pass (where there's only a bitrate). And since you don't really know which quantizer you'll get until you have encoded the second pass, I'll stick to what I have and revert back to the proper code when libavcodec gets fixed.

[Doom9]

a new build is up, incorporating the hopefully final fix to get the 2/3 pass workaround working. A full changelog can be found here: http://forum.doom9.org/showthread.ph...495#post674495

[Doom9]

the 0.2.2.3a build contains nothing new, but it's compiled using csc so it's smaller. I'll leave the VS.NET build up for a few days to see if there are no problems with this new build.