Re: [FFmpeg-user] Adeclip limited to 16bits ?

Thank you Paul, It is working perfectly : Command : ffmpeg -i /home/papa/Matlab/t.wav *-c:a pcm_f32le* -filter:a ''adeclip=m=s:n=500:t=5'' /home/papa/Matlab/tt.wav -y Giving (extract) the correct stream mapping : Duration: 00:03:54.87, bitrate: 2822 kb/s Stream #0:0: Audio: pcm_

Re: [FFmpeg-user] fftfilt

Am 13.10.2021 um 23:09 schrieb Michael Koch: Am 13.10.2021 um 22:57 schrieb Paul B Mahol: On Wed, Oct 13, 2021 at 10:51 PM Michael Koch wrote: Am 12.10.2021 um 19:29 schrieb Michael Koch: Am 12.10.2021 um 18:52 schrieb Paul B Mahol: On Tue, Oct 12, 2021 at 10:55 AM Michael Koch wrote: I

Re: [FFmpeg-user] Adeclip limited to 16bits ?

On Wed, Oct 13, 2021 at 11:31 PM Sylvain Leforestier < sylvain.leforest...@gmail.com> wrote: > Hi every boby, > I found pleasant to use ffmpeg to clean my records from old CD using Matlab > : > * audiowrite('t.wav',d/2,f,'bitspersample',32);* > > > *[sta,ret]=system ('ffmpeg -i /home/papa/M

[FFmpeg-user] Adeclip limited to 16bits ?

Hi every boby, I found pleasant to use ffmpeg to clean my records from old CD using Matlab : * audiowrite('t.wav',d/2,f,'bitspersample',32);* *[sta,ret]=system ('ffmpeg -i /home/papa/Matlab/t.wav -filter:a ''adeclip=m=s:n=500:t=5'' /home/papa/Matlab/tt.wav -y'); du=audioread('tt.wav')*2;*

Re: [FFmpeg-user] fftfilt

Am 13.10.2021 um 22:57 schrieb Paul B Mahol: On Wed, Oct 13, 2021 at 10:51 PM Michael Koch wrote: Am 12.10.2021 um 19:29 schrieb Michael Koch: Am 12.10.2021 um 18:52 schrieb Paul B Mahol: On Tue, Oct 12, 2021 at 10:55 AM Michael Koch wrote: I have a question about the "fftfilt" filter. Wh

Re: [FFmpeg-user] fftfilt

On Wed, Oct 13, 2021 at 10:51 PM Michael Koch wrote: > Am 12.10.2021 um 19:29 schrieb Michael Koch: > > Am 12.10.2021 um 18:52 schrieb Paul B Mahol: > >> On Tue, Oct 12, 2021 at 10:55 AM Michael Koch > >> > >> wrote: > >> > >>> I have a question about the "fftfilt" filter. What's the default val

Re: [FFmpeg-user] fftfilt

Am 12.10.2021 um 19:29 schrieb Michael Koch: Am 12.10.2021 um 18:52 schrieb Paul B Mahol: On Tue, Oct 12, 2021 at 10:55 AM Michael Koch wrote: I have a question about the "fftfilt" filter. What's the default value of the weight_U and weight_V options? I'm asking because I get an unexpected r

[FFmpeg-user] Using custom thread pool via setting execute and execute2

Hi, Background of my problem: I've got an app that has multiple video streams. Since thread pool is created per context, I've got way too many threads that interfere with a performance critical part of my app. The solution for this I believe is to ask ffmpeg to use my threads that I pinned as a th

Re: [FFmpeg-user] High audio latency (although low with ffplay!)

Hi Arif, On Sun, Sep 26, 2021 at 14:21:43 +0200, Arif Driessen wrote: > However, My inroad, as I see it, is essentially going from high level to > low level so probably somewhere in this order of contribution: > > 1) Documentation fixes / maybe other superficial maintenance tasks that > need doin

Re: [FFmpeg-user] frame rates

On Mon, Oct 04, 2021 at 09:15:49 +1100, Tim Lloyd wrote: > I don't know whether I am expecting too much. I would like to lower the > frame rate and hence the bit rate while keeping other video aspects the > same. I decided to ramp down to 25 fps. Depending on the content, that may not reduce the b

Re: [FFmpeg-user] Latency in webcam capture

On Thu, Oct 07, 2021 at 16:41:04 +0200, Arif Driessen wrote: > I've also tried: > > ffmpeg \ > -hide_banner \ > -analyzeduration 1 \ > -probesize 32 \ > -fflags -nobuffer \ I believe this explicitly disables the nobuffer option. Try -fflags +nobuffer Have you tried using this flag directly wit

Re: [FFmpeg-user] How to extract audio from video without re-encoding?

On Mon, Oct 11, 2021 at 10:49:15 +0200, Android PowerUser wrote: > Android PowerUser schrieb am Mo., 11. Okt. 2021, > 10:38: > -vn -c:a copy Agree. [...] > M4A is probably the best container for all expenses. I consider M4A quite restricted: https://en.wikipedia.org/wiki/Comparison_of_video_c