[FFmpeg-user] Large Video Project

[Joshua Barnard]

Do you have an alteration to the script for that?

Kind Regards,


Joshua Barnard
Group Marketing Manager

Lawrence David Limited
Woodston Point 

01733 397622 
Shrewsbury Avenue 

01733 397635 
Woodston Industry 

07393 235031 
Peterborough 

joshua.barnard at lawrencedavid.co.uk 
PE2 7LB 

www.lawrencedavid.co.uk 







Group Activities Include 
• Home Delivery Vans 
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-----Original Message-----
From: ffmpeg-user <ffmpeg-user-bounces at ffmpeg.org> On Behalf Of andrei ka
Sent: 25 January 2019 15:07
To: FFmpeg user questions <ffmpeg-user at ffmpeg.org>
Subject: Re: [FFmpeg-user] Large Video Project

i'd think about adding scene change detection to your fixed number of frames extact, lot's of things may happen during 4 secs. i bet you can add this just as an extra filter to that simple mod 240  filter, so everything will be done in 1 pass

On Fri, Jan 25, 2019 at 3:55 PM Dennis Mungai <dmngaie at gmail.com> wrote:

> On Fri, 25 Jan 2019 at 17:32, Joshua Barnard < 
> Joshua.Barnard at lawrencedavid.co.uk> wrote:
>
> > Hi all,
> >
> > Thank you for taking the time to read this.
> >
> > I'm working on a project for my company that involves creating a 
> > time lapse video.
> >
> > The issue I'm having is that I have 6TB of raw video recorded at 
> > 1080p/60FPS and I need to condense this down to 5-10 minutes of 
> > video footage.
> >
> > Is it possible to use FFMPEG to create a still image every 240 frames?
> >
> > Kind Regards,
> >
> >
> > Joshua Barnard
> > Group Marketing Manager
> >
> >
> > Lawrence David Limited
> >
> >
> >
> > _______________________________________________
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>
>
> Hello there,
>
> It's possible.
>
> For a single image every 240 frames, assuming a frame rate of 60, you 
> can exploit the select filter as shown:
>
> ffmpeg -i input -filter:v 'select=not(mod(n\,240))' image%02d.png
>
> To use time-based selection which will also include the first frame:
>
> ffmpeg -i input -filter:v
> 'select=isnan(prev_selected_t)+gte(t-prev_selected_t\,4),setpts=N/(60*TB)'
> image%02d.png
>
> For documentation, see the select and the setpts filters:
>
> 1. Select: http://ffmpeg.org/ffmpeg-filters.html#select_002c-aselect
>
> 2. setpts filter:
> http://ffmpeg.org/ffmpeg-filters.html#asetpts_002c-setpts
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