No suitable Python 3.7 (64-bit) installation found

[markfilipak]

When I attempt install, I get
"No suitable Python 3.7 (64-bit) installation found."

I had previously installed Python 3.8 (64-bit), rebooted, and run it.

Is there something special I need to do?

Regards,
Mark.

[Myrsloik]

When I attempt install, I get
"No suitable Python 3.7 (64-bit) installation found."

I had previously installed Python 3.8 (64-bit), rebooted, and run it.

Is there something special I need to do?

Regards,
Mark.

Did you install python 3.7.x?

[markfilipak]

I installed Python 3.8 (64-bit).

[ChaosKing]

You need python 3.7.x. Vapoursynth (latest versions) wont work with other versions of python on windows.

[markfilipak]

Okay. I'll regress to Python 3.7.

Thanks.

(Seems a little strange to me.)

[markfilipak]

Sorry to be a bother. You see, I don't usually allow Windows to access the Internet.

The install failed.

I got this notice:
"Error sending request"
when I attempted to download the Visual C++ run-time.

Sysinternals Process Explorer says the notice is from
'C:\Users\Administrator\AppData\Local\Temp\is-QJPUU.tmp\VapourSynth64-R47.2.tmp'.
I added a firewall rule to allow the connection.
That failed.

I modified the firewall rule to allow
'D:\D\DownThemAll!\VapourSynth64-R47.2.exe'
to connect.
That failed.

Do you have any suggestions?

Regards,
Mark.

PS: The command line for the VC++ download is
'"C:\Users\ADMINI~1\AppData\Local\Temp\is-QJPUU.tmp\VapourSynth64-R47.2.tmp" /SL5="$60738,7539181,721408,D:\D\DownThemAll!\VapourSynth64-R47.2.exe"'

That's just about the strangest command line I've seen. :-)

[TheFluff]

Okay. I'll regress to Python 3.7.

Thanks.

(Seems a little strange to me.)

Major Python versions usually have some breaking changes. VS only supports one major version at a time. If you use Python for other things as well you can use pyenv or something to manage multiple versions.

[TheFluff]

Sorry to be a bother. You see, I don't usually allow Windows to access the Internet.

The install failed.

I got this notice:
"Error sending request"
when I attempted to download the Visual C++ run-time.

Sysinternals Process Explorer says the notice is from
'C:\Users\Administrator\AppData\Local\Temp\is-QJPUU.tmp\VapourSynth64-R47.2.tmp'.
I added a firewall rule to allow the connection.
That failed.

I modified the firewall rule to allow
'D:\D\DownThemAll!\VapourSynth64-R47.2.exe'
to connect.
That failed.

Do you have any suggestions?

Regards,
Mark.

PS: The command line for the VC++ download is
'"C:\Users\ADMINI~1\AppData\Local\Temp\is-QJPUU.tmp\VapourSynth64-R47.2.tmp" /SL5="$60738,7539181,721408,D:\D\DownThemAll!\VapourSynth64-R47.2.exe"'

That's just about the strangest command line I've seen. :-)

I have no idea what might be going on there but you can always try the portable version if you don't want to use the installer.

[markfilipak]

I have no idea what might be going on there but you can always try the portable version if you don't want to use the installer.

If the portable version relies on a VC++ run-time, then it will fail, too. If it doesn't, then why does the installed version rely on a VC++ run-time?

Would you like me to explain what's going on there?

[ChaosKing]

If you have VC++ runtimes already installed then uncheck them in the vapoursynth installer.

[markfilipak]

If you have VC++ runtimes already installed then uncheck them in the vapoursynth installer.

No, I don't have the VC++ run-times installed.

And I did uncheck '[_] Visual Studio 2019 Runtime' as an experiment. It changed nothing -- VC++ run-time was still required and failed the installer.

That command line is very, very strange.
'"C:\Users\ADMINI~1\AppData\Local\Temp\is-QJPUU.tmp\VapourSynth64-R47.2.tmp" /SL5="$60738,7539181,721408,D:\D\DownThemAll!\VapourSynth64-R47.2.exe"'
A file named 'C:\Users\ADMINI~1\AppData\Local\Temp\is-QJPUU.tmp\VapourSynth64-R47.2.tmp' IS NOT created by 'VapourSynth64-R47.2.exe'. It doesn't exist, either during the (failed) installation or after.

Why do you need VC++?

[markfilipak]

Well, I unchecked all the options in the installer and I installed it. ...or did I?

There is no executable. The 'Start Menu' 'Programs' 'VaporSynth (64-bit)' lists these:
Documentation (Online).url
Global Autoload Directory.lnk
User Autoload Directory.lnk
VapourSynth Website.url
None of them are programs.

What is going on?

[ChaosKing]

There is no "Vapoursynth.exe". VS is a dll just like avisynth. Download vsedit https://forum.doom9.org/showthread.php?t=170965 to make your life easier.
Or You could also download my VS portable pack (see signature link). It has everything you need to get started (inc. plugins/scripts), no installation needed. Start vapoursynth editor and open the test.vpy file.

Edit: the pack has also .bat examples for x264/x265

[markfilipak]

There is no "Vapoursynth.exe". VS is a dll just like avisynth.
Well, I guess there's the problem. You see, I've never used avisynth. I'm coming from HandBrake, and as good as HandBrake is (except for the built-in presets, all of which produce some judder -- but not my custom presets), I'm frustrated by what it obviously does that is background/hidden and is not telling me about, and by it's lack of documentation. A fellow on #MPV named JEEB recommended VapourSynth. I'm trying to install (or whatever) VS so I can see what it is.

I've written/poached some ffprobe & ffmpeg commands to help me ascertain the container metadata & raw frame characteristics of various DVDs so that I can determine the type of source files: '480i24' (i.e., soft telecine, simultaneous odd/even fields) v. '480i30-telecine' (i.e., hard telecine, 2-3 pull-down, simultaneous odd/even fields) v. '480i30-telecast' (i.e., sequential odd/even fields). I can't see how anyone can begin a transcode without knowing such things -- the alternative is trial-&-error -- but HandBrake doesn't have facilities to input the source video characteristics. When I ask about this, I'm told that the decoder outputs what it outputs... in other words, there's no alternative except trial-&-error.

Download vsedit https://forum.doom9.org/showthread.php?t=170965 to make your life easier.
Or You could also download my VS portable pack (see signature link). It has everything you need to get started (inc. plugins/scripts), no installation needed. Start vapoursynth editor and open the test.vpy file.
Thanks much. I will download your offerings, with my sincere appreciation.

Regards,
Mark.

PS: Of your various offerings, what do you recommend? -- I don't know what your offerings are.

PPS: I'm running Win10 as Host OS, Linux as Guest OS. I do video work in Win10.

[markfilipak]

I found 'test.vpy', loaded it, and did 'Script' 'Encode video'. Here's what I got

2019-10-17 00:37:44.258
Ready to encode script D:/D/DownThemAll!/VapourSynth64Portablexs_2019_10_09/test.vpy
2019-10-17 00:38:32.444
Command line:
"D:/D/DownThemAll!/VapourSynth64Portablexs_2019_10_09/bin/x264.exe" --demuxer y4m --preset medium --crf 16 --output-depth 10 -o "D:/D/DownThemAll!/VapourSynth64Portablexs_2019_10_09\x264_10bit_video.mkv" -
Checking the encoder sanity.
y4m [error]: bad sequence header magic
x264 [error]: could not open input file `-'
Encoder seems sane. Starting.
Encoder started. Beginning encoding.
y4m [error]: bad sequence header magic
x264 [error]: could not open input file `-'
2019-10-17 00:38:32.561
Error on writing data to encoder.
Expected to write: 1382400 bytes. Data written: 0 bytes.
Aborting.
2019-10-17 00:38:32.623
Aborted encoding.

[poisondeathray]

Well, thanks, ChaosKing, but I'm sorry to say that I'm going to have to give up on VapourSynth. I looked at your stuff. I didn't know what it was, or what to download.

I guess my inexperience with avisynth is just too much to overcome.



Why didn't you start with avisynth?

I think it's easier to use, more people use it, more guides and help . For what you want to do with DVD processing, it works well, very mature, and has been used for years. In some ways for DVD processing, it's better than vapoursynth as the avisynth TIVTC plugin has more functions for field matching and decimation modes than vapoursynth's VIVTC.

[markfilipak]

Hi poisondeathray,

Thanks for contributing.
Why didn't you start with avisynth?

I think it's easier to use, more people use it, more guides and help . For what you want to do with DVD processing, it works well, very mature, and has been used for years. In some ways for DVD processing, it's better than vapoursynth as the avisynth TIVTC plugin has more functions for field matching and decimation modes than vapoursynth's VIVTC.

May I ask a very basic question: What do these programs (or DLLs) do?

Some background, first...
I've been somewhat frustrated when attempting to transcode particular i30 special features. From the looks of the results, I'd say that the sources from which the videos were made were a mix of p24 movie clips (pulled down to i30) and 30fps TV interviews (sequential fields). For the clips, I can detelecine to find Joy. For the interviews, I would leave alone but HandBrake only outputs progressive, so there's some judder. But if I detelecine the whole thing, the interview judder is really bad.

I assume avisynth & vapoursynth would empower me to apply differing filters based on, for example, frame # ranges. Right? Well, if I knew more than I do, I could do that with ffmpeg, so why would I need avisynth or vapoursynth?

Thanks for your reply. I'm looking forward to reading it.

[poisondeathray]

May I ask a very basic question: What do these programs (or DLLs) do?


dll's are dynamic link libraries. In avisynth or vapoursynth they are just "plugins" or the code for specific functions or operations wrapped up nicely

These "programs" are just frameworks for video /image/ audio processing. Various types of processing tasks .

In your case here, inverse telecine, proper deinterlacing, but they can do a lot more, things like denoising, upscaling, enhancing, color correction etc...


Some background, first...
I've been somewhat frustrated when attempting to transcode particular i30 special features. From the looks of the results, I'd say that the sources from which the videos were made were a mix of p24 movie clips (pulled down to i30) and 30fps TV interviews (sequential fields). For the clips, I can detelecine to find Joy. For the interviews, I would leave alone but HandBrake only outputs progressive, so there's some judder. But if I detelecine the whole thing, the interview judder is really bad.




That is known as VFR content. Mixed content frame rates. Those interview segments with motion in sequential fields are really 59.94 field/s interlaced. You would need double rate deinterlacing to 59.94p to preserve everything. The 23.976p sections would need to be inverse telecined.

Timecode (timestamp) based VFR means each section runs at it's proper framerate. 23.976p sections run at 23.976p , 59.94p run at 59.94p, and so forth . This type of processing is more difficult to do than "normal" DVD's, but there are guides on how to do it. The timecodes tell the player how long the frames display for, and keep everything in sync


I assume avisynth & vapoursynth would empower me to apply differing filters based on, for example, frame # ranges. Right? Well, if I knew more than I do, I could do that with ffmpeg, so why would I need avisynth or vapoursynth?



ffmpeg is buggy with DVD processing. This has been demonstrated with clear evidence. Even though some of the same filters were ported from avisynth, the results are different on the same DVD. Most recently maybe a 1 or 2 years ago at videohelp. 6-7 retail DVD samples were posted and run through avisynth, vapoursynth or ffmpeg. A ffmpeg developer was there too (richardpl).

My theory is it has to do with either frame accurate seeks (Typically you'd use DGIndex in avisynth, it's frame accurate) , and/or that ffmpeg library/libavcodec version. FFMS2 versions of avisynth (based on the same ffmpeg libraries) can have problems with DVD too. This was demonstrated in another thread here. Very old versions of ffms2 seem to work, so that's where that library theory comes from.

Deinterlacing. ffmpeg doesn't have anything like QTGMC. Overall, QTGMC is the best general use deinterlacer by a fair margin . You also have other choices for edge cases. Handbrake doesn't have QTGMC either, it has basically equivalent to yadifmod with EEDI2 interpolation for it's higher quality mode (not as good)

[ChaosKing]

I found 'test.vpy', loaded it, and did 'Script' 'Encode video'. Here's what I got

vsedit has a small bug. When you open the encode dialog the first time after app start it won't set the Header to Y4M (it shows no header). Just select another profile and then select the previous again or just set it to y4m by yourself.

[stax76]

@markfilipak

staxrip is well suited for avisynth and vapoursynth beginners, it supports both avisynth and vapoursynth and also qtgmc for both and 200 other plugins and scripts. Any plugin or script can be integrated and any parameters can be used with the integrated code editor.

[markfilipak]

@poisondeathray
@ChaosKing
@stax76

Thanks All! You've given me so much to think about: good suggestions, reassurance that I'm not crazy, confirmation that some people really do know their stuff, a comparative survey of methods, and a little history.

You did not disappoint. But it's 3:30 AM here and I'm passing out. I'll read this stuff in detail in the morning.

Thank You!

[markfilipak]

vsedit has a small bug. When you open the encode dialog the first time after app start it won't set the Header to Y4M (it shows no header). Just select another profile ...
I don't know how to do that (and the menu shows no such "profile" choice).
... and then select the previous again or just set it to y4m by yourself.
I don't know how to "set it to y4m". I pasted the script into my programmers editor and searched for "header" (no case) and found nothing. If a "header" entry needs to be added, I don't know how/where to do that.

== I assume from the contents of 'test.vpy' that it will produce a short color bar video.

[poisondeathray]

I don't know how to do that (and the menu shows no such "profile" choice).

I don't know how to "set it to y4m". I pasted the script into my programmers editor and searched for "header" (no case) and found nothing. If a "header" entry needs to be added, I don't know how/where to do that.

== I assume from the contents of 'test.vpy' that it will produce a short color bar video.



in vsedit, when you use script => encode video (or push f8) , a new dialog box will open up , and a section Header: , with a drop down box. You can select Y4M, or No Header. Also, there will be a box for presets

[markfilipak]

in vsedit, when you use script => encode video (or push f8) , a new dialog box will open up , and a section Header: , with a drop down box. You can select Y4M, or No Header. Also, there will be a box for presets
Got that. Did it.

I aborted when I received this log entry:
"Script exceeded memory limit. Consider raising cache size".

I don't know how to do that. I looked through the menu and 'Edit' 'Settings' but found no Joy.

[ChaosKing]

You can ignore this message for now. (Thats what I do :D)

But if you want you can add something like

core.max_cache_size = 4000 # http://www.vapoursynth.com/doc/pythonreference.html#Core.max_cache_size

to your script. After the "core = vs.get_core()" line...

[M00NWALKER]

hi am new here , and i also have this error appearing from time to time , Script exceeded memory limit. Consider raising cache size, so where exactly would i write this --> core.max_cache_size = 4000, and how do i know what amount to to write in, i do see in another post in was written in Options- filters box.

[DJATOM]

I'm setting near 80% of my RAM and that plays well on my end.

[M00NWALKER]

it seems to happen to me when i'm encoding any 4k size video down to 1080p. whether its a small 8gb file @ 4k resolution or 30gb file @ 4k resolution it happens. i have a pretty fast PC as well. i dont know what i need to do to fix it from saying it.

Windows 10 PC specs

AMD Ryzen 5 5600X 6-Core Processor
RAM 32.0GB
Motherboard ASUSTeK PRIME B550M-A
Graphics 4095MB NVIDIA GeForce RTX 2060 SUPER (Gigabyte)
SSD 465GB Samsung SSD 970 EVO Plus 500GB
750w Power Supply