[Bug 51530] New: MeGUI: processing AVS script conversion on large source file fills disk to 100% with intermediate processing file

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=51530

            Bug ID: 51530
           Summary: MeGUI: processing AVS script conversion on large
                    source file fills disk to 100% with intermediate
                    processing file
           Product: Wine
           Version: 6.13
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: gdiplus
          Assignee: wine-bugs at winehq.org
          Reporter: tigerwild at gmail.com
      Distribution: ---

Generated .avs script converting non-interlaced MPEG-2 (DVD standard) into x265
then final output to be muxed within .mkv container. 

I identified that long start times when opening content appear to be caused by
the the intermediate processing of files. The AVS script pipes data from one
process to another, and I noted that the initial process of Ffmpeg output, was
not staying constrained to ram. Instead it was being written to disk while also
not being forwarded to the encoder until AFTER it had completely processed the
input video file. 

The intermediate processing and storage of uncompressed frames data generated
prior to handoff to x265 encoder rapidly fills 100+ GB of disk file space,
typically on root drive as this is where Wine (
/home/username/.wine/drive_c/users/username/Temp ) directory is located.

Testing by converting just a small number of frames where the intermediate
files created did not completely fill up the hard disk were 100% successful
with the only performance bump compared to Windows being the intermediate
writing of the files to the hard drive.

Steps to reproduce:
Install
  wine-6.13 ( staging )

Execute
  Executed WineCFG, configure default Windows version to 2008 or Windows 7

Install
  winetricks

Download
  As Microsoft no longer supports fileshare of windows6.1-KB976932-X64.exe, I
downloaded a copy from https://archive.org/details/windows6.1-KB976932 .
Place the file into /home/username/.cache/winetricks/win7sp1 [ it's a 903 MB
file! ]

  Get the official MeGUI 2913 x32 from
https://sourceforge.net/projects/megui/files/ .
Extract and place the files into  /home/username/.wine/drive_c/Program Files
(x86)/MeGUI-2913-32

Execute
  winetricks, perform 'Install an application',
with no application selected pressed 'cancel', then select 'Install a Windows
DLL or component', then select 'dotnet40'.

  winetricks, perform 'Install an application',
with no application selected pressed 'cancel', then select 'Install a Windows
DLL or component', then selected 'gdiplus'.

  WineCFG, select 'Add application' and manually navigate to the directory; I
selected MeGUI.exe and set version to either Windows 2008 / 7. Both worked in
testing.

  MeGUI, note: I got multiple error windows prior to program finally showing up
for use on screen. Wine performed two reconfigurations and proceeded some 20
seconds before the application was usable.


Behaviour:
Root drive is filled to capacity very quickly reaching 99.99% useage and
forcing OS to ask to free up space. MeGUI task monitor shows no progress during
this time. The /home/username/.wine/drive_c/users/username/Temp   directory is
filled with files which appear to be the uncompressed video frames coming from
FFMPEG's processing, prior to being piped to the x265 encoder.

Expected behaviour:
Each process should be constrained to RAM for fastest processing, vice writing
the ouputs to disk. Also the pipe from one process to the next should happen
immediately upon reaching a filled capacity (eg. 90% filled buffer).


Additional information:
Typical command line that MeGUI generates for actually performing its processes
is similar to the following Job command line: 
"cmd.exe" /c ""C:\Program Files (x86)\MeGUI-2913-32\tools\ffmpeg\ffmpeg.exe"
-loglevel level+error -i "Z:\media\PcName\Data\Archive\Video
Captures\MyDvDContent.mkv.avs" -strict -1 -f yuv4mpegpipe - | "C:\Program Files
(x86)\MeGUI-2913-32\tools\x265\x64\x265.exe" --preset faster --tune grain --crf
21.9 --sar 1:1 --output "Z:\media\PcName\Data\Archive\Video
Captures\MyDvDContent.mkv.hevc" --frames 163130 --y4m -"

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