How to redirect and use the framebuffer?
I need to work on the framebuffer to record what is being rendered.
Now, I figure out how to convert the framebuffer in an image, I'm currently unable to obtain a constant stream of data from the fb to create a video.
/dev/fb > fb
When I do something like this my redirection just drops me and I honestly don't know how to work in another way with the framebuffer.
How I can obtain a stream?
pipe framebuffer streaming
edited Oct 13 '12 at 11:16
N.N.
1,3721118
asked Oct 13 '12 at 10:25
user1717079user1717079
1501211
bumped to the homepage by Community♦ 18 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
add a comment |
I need to work on the framebuffer to record what is being rendered.
Now, I figure out how to convert the framebuffer in an image, I'm currently unable to obtain a constant stream of data from the fb to create a video.
/dev/fb > fb
When I do something like this my redirection just drops me and I honestly don't know how to work in another way with the framebuffer.
How I can obtain a stream?
pipe framebuffer streaming
edited Oct 13 '12 at 11:16
N.N.
1,3721118
asked Oct 13 '12 at 10:25
user1717079user1717079
1501211
bumped to the homepage by Community♦ 18 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
/dev/fbis not a command! Usecat /dev/fb > fb
– Guido
May 29 '14 at 13:43
add a comment |
I need to work on the framebuffer to record what is being rendered.
Now, I figure out how to convert the framebuffer in an image, I'm currently unable to obtain a constant stream of data from the fb to create a video.
/dev/fb > fb
When I do something like this my redirection just drops me and I honestly don't know how to work in another way with the framebuffer.
How I can obtain a stream?
pipe framebuffer streaming
edited Oct 13 '12 at 11:16
N.N.
1,3721118
asked Oct 13 '12 at 10:25
user1717079user1717079
1501211
I need to work on the framebuffer to record what is being rendered.
Now, I figure out how to convert the framebuffer in an image, I'm currently unable to obtain a constant stream of data from the fb to create a video.
/dev/fb > fb
When I do something like this my redirection just drops me and I honestly don't know how to work in another way with the framebuffer.
How I can obtain a stream?
pipe framebuffer streaming
pipe framebuffer streaming
edited Oct 13 '12 at 11:16
N.N.
1,3721118
asked Oct 13 '12 at 10:25
user1717079user1717079
1501211
edited Oct 13 '12 at 11:16
N.N.
1,3721118
asked Oct 13 '12 at 10:25
user1717079user1717079
1501211
edited Oct 13 '12 at 11:16
N.N.
1,3721118
edited Oct 13 '12 at 11:16
N.N.
1,3721118
edited Oct 13 '12 at 11:16
N.N.
1,3721118
1,3721118
asked Oct 13 '12 at 10:25
user1717079user1717079
1501211
asked Oct 13 '12 at 10:25
user1717079user1717079
1501211
asked Oct 13 '12 at 10:25
user1717079user1717079
1501211
1501211
bumped to the homepage by Community♦ 18 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
bumped to the homepage by Community♦ 18 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
/dev/fbis not a command! Usecat /dev/fb > fb
– Guido
May 29 '14 at 13:43
add a comment |
/dev/fbis not a command! Usecat /dev/fb > fb
– Guido
May 29 '14 at 13:43
/dev/fb is not a command! Use cat /dev/fb > fb– Guido
May 29 '14 at 13:43
/dev/fb is not a command! Use cat /dev/fb > fb– Guido
May 29 '14 at 13:43
add a comment |
1 Answer
1
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In order to capture data from the framebuffer, you can copy from the framebuffer device file:
cp /dev/fb0 fb
If you changed the file you're copying to every time, you should be able to save every frame. Don't expect a lot of Frames per Second though, since the framebuffer is typically pretty slow.
As suggest in this forum post, ffmpeg might be a better option:
ffmpeg -f fbdev -i /dev/fb0 -r 24 -c:v libx264 -b:v 500k output.avi
answered Apr 1 '16 at 15:13
VrealityVreality
1537
add a comment |
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1 Answer
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votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
In order to capture data from the framebuffer, you can copy from the framebuffer device file:
cp /dev/fb0 fb
If you changed the file you're copying to every time, you should be able to save every frame. Don't expect a lot of Frames per Second though, since the framebuffer is typically pretty slow.
As suggest in this forum post, ffmpeg might be a better option:
ffmpeg -f fbdev -i /dev/fb0 -r 24 -c:v libx264 -b:v 500k output.avi
answered Apr 1 '16 at 15:13
VrealityVreality
1537
add a comment |
In order to capture data from the framebuffer, you can copy from the framebuffer device file:
cp /dev/fb0 fb
If you changed the file you're copying to every time, you should be able to save every frame. Don't expect a lot of Frames per Second though, since the framebuffer is typically pretty slow.
As suggest in this forum post, ffmpeg might be a better option:
ffmpeg -f fbdev -i /dev/fb0 -r 24 -c:v libx264 -b:v 500k output.avi
answered Apr 1 '16 at 15:13
VrealityVreality
1537
add a comment |
In order to capture data from the framebuffer, you can copy from the framebuffer device file:
cp /dev/fb0 fb
If you changed the file you're copying to every time, you should be able to save every frame. Don't expect a lot of Frames per Second though, since the framebuffer is typically pretty slow.
As suggest in this forum post, ffmpeg might be a better option:
ffmpeg -f fbdev -i /dev/fb0 -r 24 -c:v libx264 -b:v 500k output.avi
answered Apr 1 '16 at 15:13
VrealityVreality
1537
In order to capture data from the framebuffer, you can copy from the framebuffer device file:
cp /dev/fb0 fb
If you changed the file you're copying to every time, you should be able to save every frame. Don't expect a lot of Frames per Second though, since the framebuffer is typically pretty slow.
As suggest in this forum post, ffmpeg might be a better option:
ffmpeg -f fbdev -i /dev/fb0 -r 24 -c:v libx264 -b:v 500k output.avi
answered Apr 1 '16 at 15:13
VrealityVreality
1537
answered Apr 1 '16 at 15:13
VrealityVreality
1537
answered Apr 1 '16 at 15:13
VrealityVreality
1537
answered Apr 1 '16 at 15:13
VrealityVreality
1537
1537
add a comment |
add a comment |
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/dev/fbis not a command! Usecat /dev/fb > fb– Guido
May 29 '14 at 13:43