Search found 54 matches

by richardpl
Wed Jul 10, 2019 1:49 pm
Forum: Usage
Topic: showspectrumpic and background color
Replies: 5
Views: 446

Re: showspectrumpic and background color

Consider donating to FFmpeg for this addition.
by richardpl
Sat Jul 06, 2019 5:42 pm
Forum: Usage
Topic: Apply BiQuad filter to wav at certian timespans
Replies: 12
Views: 902

Re: Apply BiQuad filter to wav at certian timespans

He can do FFT with afftfilt at expense of huge latency, just set bins he want to 0 (or better to multiply values with very small factor greater than zero). Also he may need huge window size to have good resolution. On another hand afir have options to control latency and performance of filtering no ...
by richardpl
Sat Jul 06, 2019 10:15 am
Forum: Usage
Topic: Completly cut a frequency range
Replies: 12
Views: 472

Re: Completly cut a frequency range

pandy wrote:
Fri Jul 05, 2019 9:00 pm
Luckily to us filters behaviour doesn't change despite ffmpeg developers efforts
What does this even means?
by richardpl
Sat Jul 06, 2019 10:14 am
Forum: Usage
Topic: Completly cut a frequency range
Replies: 12
Views: 472

Re: Completly cut a frequency range

pandy wrote:
Thu Jul 04, 2019 6:37 pm
bandreject should be correctly names bandstop filter
No, that are synonyms.
by richardpl
Thu Jul 04, 2019 7:23 pm
Forum: Usage
Topic: Apply BiQuad filter to wav at certian timespans
Replies: 12
Views: 902

Re: Apply BiQuad filter to wav at certian timespans

Perhaps you want bandpass filter?
Also from zeranoe you can download latest devel version which have timeline support.
by richardpl
Tue Jul 02, 2019 7:36 am
Forum: Usage
Topic: Apply BiQuad filter to wav at certian timespans
Replies: 12
Views: 902

Re: Apply BiQuad filter to wav at certian timespans

You need certain skills to be helpful to community in general.
by richardpl
Fri Jun 07, 2019 6:52 am
Forum: Usage
Topic: Apply BiQuad filter to wav at certian timespans
Replies: 12
Views: 902

Re: Apply BiQuad filter to wav at certian timespans

see

Code: Select all

ffmpeg -h filter=biquad
by richardpl
Wed Jun 05, 2019 8:05 am
Forum: Usage
Topic: Apply BiQuad filter to wav at certian timespans
Replies: 12
Views: 902

Re: Apply BiQuad filter to wav at certian timespans

Biquad filter support timeline, but you need recent ffmpeg.
by richardpl
Fri May 03, 2019 9:40 am
Forum: Suggestions
Topic: VMAF Filter
Replies: 9
Views: 6044

Re: VMAF Filter

Is there other implementations of VMAF?
Is there open specification how to do VMAF?
by richardpl
Wed May 01, 2019 1:34 pm
Forum: Suggestions
Topic: VMAF Filter
Replies: 9
Views: 6044

Re: VMAF Filter

VMAF is just trend, not reality.