convolution with acourate fir filter

[SMSWAP]

Hi Simon,

I have installed the convolution options on a friend's NAS (type Synology). Since the last update on FFMPEG on the NAS, this command doesn't work anymore:

convOut=-i PATH/CorS44.wav -filter_complex [0]apad=pad_len=32768[2];[2][1]afir[3];[3]atrim=start_sample=32768

Only the simplified version convOut=-i PATH/Cor1S*.wav -lavfi afir works.

Are you aware of any changes to FFMPEG on the Synology platfrom which stop the advanced version from be used?

Cheers, SMSWAP