Raspberry Pi Forums

towolf

http://www.raspberrypi.org/phpBB3/viewt ... 87#p365187

towolf

Typo?

-f flv is needed for RTMP

towolf

Well, I'm now backtracking through git (which you called a slow motion train wreck) to find a last-known-good commit. And doing that takes a lot of time. Meanwhile (waiting for compiles) I took the time to notify you that the recent changes had side effects, since you said you were not aware that an...

towolf

This option was highly appreciated. We had a lot of talk months ago about what the maximum milliseconds are that fit into a 32-bit integer. Then finally someone came to send a pull request (actually more than one person did) to make -t 0 indefinite operation. Now it's clobbered again. Wasn't there s...

towolf

Yes -ex night makes framerate variable. But within limits: 4-30 fps. So i pegged framerate at 4 FPS instead to get more sensitivity at constant frame rates.

towolf

I think we use a constant bitrate (or at least it attempts to). That is not really the case here: http://i.imgur.com/0fuQ8Uv.png this is with /opt/vc/bin/raspivid -v -n -pf high -ex night -mm matrix -w 1920 -h 1080 -fps 4 -g 60 -t 0 -b 25000000 So perhaps the 4 FPS is messing with the rate control

towolf

RaTTuS wrote:-t 0 is probably too fast
why -hf and -vf
and -
should be right at the end

That’s not true. - acts like a file name and makes the program write to stdout file descriptor.

towolf

He said it’s coming, there are still hangs.

towolf

No, that’s a hacky shim.

towolf

What is this guy talking about here: https://www.youtube.com/watch?feature=player_detailpage&v=XRS45-IOM6w#t=2569 It is Daniel Stone of Collabora speaking. Collabora worked on Wayland integration for the foundation. He says: "We’ve done a number of other dull things, like a V4L driver."...

towolf

A longer hysteresis would be enough for now. Suppose that is a constant.

towolf

jamesh wrote: Are you sure? Are you talking about the ability to individually set custom gains for G and B (i.e. proper custom white balance)? I've never seen that except on DSLRs.

First hit on Google for Canon IXUS pdf manual

IXUS are 60-200 EUR P&S cameras

towolf

As a stop-gap workaround you can pipe continuous video into ffmpeg to let it segment and package the stream gaplessly.

http://www.raspberrypi.org/phpBB3/viewt ... 99#p368099

towolf

It is not a night vision camera if only the filter is left out. The low light sensitivity is too bad for that.

If you need to add an infra-red light source to light the scene to make anything visible at night that is something entirely different.

towolf

Not at present, and unlikely to be done as there is such a limited 'market' for it. After all, how many people actually use the 'custom wb' setting on their camera - if it even exists on the lower end as it seem to be only on DSLRs as far as I have seen. That’s not true. 100 EUR P&S all have th...

towolf

All fixed-preset-WB does is to set a white point in Kelvin of black body radiance. If "sunny" is D65 or 6500K, and "cloudy" is D55 or 5500K, and "tungsten" is 3000K, the question is merely, is it possible to set a white point via numeric input to all points of the scale...

towolf

If you remove the references in the first post to .elf and .dat files and add this line, does it work then?

Code: Select all

start_x=1

towolf

And you do not need Xorg if you do not want it.

towolf

I did this, and borked my installation (it just hangs at the raspberry pi image). I'm guessing I was either supposed to install X first, or that I was supposed to comment out the other gpu_mem lines in config.txt... Any possible explanations would be helpful. Meanwhile I'm going to mount my SD card...

towolf

Webcams, I believe, use variable frame rate, since they are not bothered about maintaining a fixed rate, which we are. So in darker conditions the rate is lowered to help exposure times. This is how -ex night used to work. It ranged between 4fps in low light and 30fps in fully lit conditions. And t...

towolf

I’ve found out what the problem with my tutorial was. I’ve missed a file that magically was present on my system when I wrote the guide, but isn’t on a clean arch linux arm pi system:

http://ftp.tuebingen.mpg.de/pub/kyb/tow ... ermissions

towolf

Low light sensitivity is quite bad. There used to be a method to adaptively use lower frame rates and hence longer exposure times in darkness but that got broken at some point. Here’s an example: https://vimeo.com/66772178 Though I agree that low light sensitivity likely isn't great, I think the sa...

towolf

Low light sensitivity is quite bad. There used to be a method to adaptively use lower frame rates and hence longer exposure times in darkness but that got broken at some point.

Here’s an example: https://vimeo.com/66772178

towolf

Compile real ffmpeg, not the stupid fork.

towolf

No root please. And please familiarize yourself with UNIX basics.

You need to chown or chgrp the destination directory.

If your web server runs as www-data then chgrp or chown to www-data. And test as "sudo -u www-data -s".

Search found 421 matches

Re: who has changed the lens?

Re: streaming question

Re: raspivid --timeout 0 not working

Re: raspivid --timeout 0 not working

Re: bitrate & keyframe howto?

Re: bitrate & keyframe howto?

Re: Error on raspivid

Re: External driver development

Re: External driver development

External driver development

Re: raspistill - exposure

Re: raspistill - exposure

Re: Can raspivid record a series of short files continuously

Re: Pi-Noir - Night vision camera

Re: raspistill - exposure

Re: raspistill - exposure

Re: Camera module on Arch Linux?

Re: Camera module on Arch Linux?

Re: Camera module on Arch Linux?

Re: Consider a USB camera as an alternative

Re: Camera Module NGINX

Re: Example pictures and "low-light" question

Re: Example pictures and "low-light" question

Re: output stream from raspivid seems weird and uncontrollab

Re: Camera Module NGINX