[FFmpeg-user] low quality video using raspberry pi

shuvro majumder shuvromaj at gmail.com
Sun Feb 21 08:00:06 CET 2016


I have to take a long time video( sometimes, day long video). So, it is not
possible to save high quality video. That's why I want to save low quality
video directly
On Feb 21, 2016 12:32 PM, "Lou" <lou at lrcd.com> wrote:

> On Sat, Feb 20, 2016, at 09:00 PM, shuvro majumder wrote:
> > Hello, I am trying to take very low quality video using raspberry pi and
> > a
> > usb webcam. For this firstly I took 320p video and then converted it to
> > h264 by this:
> >
> > ffmpeg -f video4linux2 -s 320*240 -r 20 -i /dev/video0 out.mpg
> >
> > ffmpeg -i out.mpg -c:v libx264 -preset slower -crf 30 -c:a copy
> > output.h264
> >
> > Is it possible to make a video of lower quality without converting? It
> > it possible to make a video of lower quality than this? If I try to
> > save h264 directly writing out.h264, frame-rate decreases with time,
> > and it becomes 6-7 fps after some time.
>
> You should always provide the complete console output with each command.
>
> Why do you want low quality?
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