Convolution Help

[emiwan]

Hello,

I'm a bit confused with how convolution works.
I have installed ffmpeg 4.1. on my synology Nas (armadaxp)
But Idon't understand the process. Do i have to choose a test file (wav or flac) to make convolution works?

Thank you very much in adavnce for your explanations for a rookie like me.

[Alandbush]

(17-02-2019 00:45)emiwan Wrote:  Hello,

I'm a bit confused with how convolution works.
I have installed ffmpeg 4.1. on my synology Nas (armadaxp)
But Idon't understand the process. Do i have to choose a test file (wav or flac) to make convolution works?

Thank you very much in adavnce for your explanations for a rookie like me.

Try this convolution thread to gain some understanding.

[simoncn]

The best place to start is by reading this section of the User guide.

[emiwan]

Thank you.
I tried to enter this in the stream options :
convOut=-i /MinimServer/Cor1S44.flac -lavfi afir
But it doesn't work.
I pasted my test file (Cor1S44.flac) in the minimserver shared folder of NAS Synology 414.
I have installed ffmpeg (version 4.1.1) but it didn't installed in the minimserver shared folder (I don't now actually where it is installed). I can't access root folder of my synology in diskstation.
Did I missed something?

Thank you for your help

[simoncn]

What do you mean by "doesn't work"? Are you getting an error message? If so, what is this message?

The path to the MinimServer shared folder on a Synology NAS would normally be /volume1/MinimServer. Try changing your setting to:
convOut=-i /volume1/MinimServer/Cor1S44.flac -lavfi afir

If this produces an error message, please post the exact wording of the error message.

[emiwan]

Thank you Simon, I tried to enter the setting you've provided in the stream option field (convOut=-i /volume1/MinimServer/Cor1S44.flac -lavfi afir)
I get the following error message :
"ConvOut" option convolution file error; correct highlighted value and retry

[simoncn]

The convolution file must be a .wav file, not a .flac file. This is why you are getting the error message.

[emiwan]

(17-02-2019 18:51)simoncn Wrote:  The convolution file must be a .wav file, not a .flac file. This is why you are getting the error message.

Thank you Simon,

I used another file, a wav file, but I still get the error message...

[img][/img]

[simoncn]

This is a different message. It is telling you that you don't have the correct version of ffmpeg. You need to find the path location of the ffmpeg 4.1 binary that you have installed and put this location in the stream.converter property.

[emiwan]

Thank you.

I have 2 ffmpeg installed, on e that is preinstalled but very old : -> this i the one minimserver is pointing out when the stream converter field is just set to "ffmpeg".
But unfortunately, I have installed the package "ffmpeg" in version 4.1.11 but it's just impossible to know WHERE it is installed on the synology. I have tried several options with putty or/in internet, and just no answers on this.