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by BorisS
Thu Feb 05, 2015 8:46 pm
Forum: Camera board
Topic: Pure Python camera interface
Replies: 462
Views: 175726

Re: Pure Python camera interface

Hi Dave, first quick tests work really great - thanks! Following split line used in a loop over index did the trick: camera.split_recording(PtsOutput(camera, 'video_%d.h264' % index, 'timecodes_%d.txt' % index)) Due to the timestamps I've seen that my recordings are skipping 1 out of 3 frames. This ...
by BorisS
Thu Feb 05, 2015 2:44 pm
Forum: Camera board
Topic: Pure Python camera interface
Replies: 462
Views: 175726

Re: Pure Python camera interface

Thank you for this info, Dave. Totally overlooked this class. I'll give it a try!

Boris
by BorisS
Thu Feb 05, 2015 1:25 pm
Forum: Camera board
Topic: Pure Python camera interface
Replies: 462
Views: 175726

Re: Pure Python camera interface

> but it looks like January is going to be very busy for me Hi waveform80 - hope february is going to be better ;) I'd like to ask for a new picamera feature: Would it be possible to output pts (timestamp information) also for picamera as it was done by ethanol100 for raspivid? (thread here http://w...
by BorisS
Mon Jan 26, 2015 4:31 pm
Forum: Camera board
Topic: raspivid - h264 video doesnt have any duration data when pl
Replies: 4
Views: 1268

Re: raspivid - h264 video doesnt have any duration data when

I don't know if it is still an issue but in the past you couldn't be sure that #fps that have been recorded was that one cam was configured for. Especially in low light conditions, instantaneous fps rate dropped down to lower values. My workarround was to record only segments, then compute the effec...
by BorisS
Sat Feb 01, 2014 9:02 pm
Forum: Camera board
Topic: Pure Python camera interface
Replies: 462
Views: 175726

Re: Pure Python camera interface

Hi Dave,
thank you very much! Workaround works like a charm.

Boris
by BorisS
Wed Jan 29, 2014 8:32 pm
Forum: Camera board
Topic: Camera induces heavy noise to USB microphone
Replies: 10
Views: 2993

Re: Camera induces heavy noise to USB microphone

I do use the 2.1A power supply from Farnells RasPi shop and my Pi runs headless. And yes it's an electret mic with three inputs (signal and power are separated).
by BorisS
Wed Jan 29, 2014 8:06 pm
Forum: Camera board
Topic: Camera induces heavy noise to USB microphone
Replies: 10
Views: 2993

Re: Camera induces heavy noise to USB microphone

Update: - Shielding cable with a tin didn't change things noticeably (maybe shielding was not properly grounded, but I also guess transients on power rail are more significant). - A powered hub solved the problem! Thanks for this proposal. It's only a pity that an extra wall wart, usb hub, sound car...
by BorisS
Wed Jan 29, 2014 8:10 am
Forum: Camera board
Topic: Camera induces heavy noise to USB microphone
Replies: 10
Views: 2993

Re: Camera induces heavy noise to USB microphone

The camera is a PiNoIR (connected with with default flex cable, pointing away from usb ports as far as it is possible).

Difficult to judge the noise. Approximately Gaussian in the low and medium frequency range. It is always present in video mode and bursty in raspistill timelapse mode.
by BorisS
Tue Jan 28, 2014 9:10 pm
Forum: Camera board
Topic: Camera induces heavy noise to USB microphone
Replies: 10
Views: 2993

Camera induces heavy noise to USB microphone

Once the camera is activated it induces heavy noise into a microphone that is connected to an USB sound card which itself is connected to the same Pi.

Has anyone some experience how this can be stopped/reduced? E.g. something like an USB extension cable with ferrite ...?
by BorisS
Tue Jan 28, 2014 8:39 pm
Forum: Camera board
Topic: Pure Python camera interface
Replies: 462
Views: 175726

Re: Pure Python camera interface

I see following issue under latest 1.1 version (simple merge of two example recipes): #!/usr/bin/python import time import picamera with picamera.PiCamera() as camera: camera.resolution = (2592, 1944) camera.start_recording('full_res_1.h264', format='h264', resize=(1024, 768)) camera.wait_recording(...
by BorisS
Sun Nov 17, 2013 8:51 pm
Forum: Camera board
Topic: PoC: Poor man's high framerate full HD motion detection
Replies: 25
Views: 14578

Re: PoC: Poor man's high framerate full HD motion detection

Hi, below there is yet another bash script to record video (and optional stills) on movement detection. In contrast to the poor man's solution it is not based on file size but on the difference of frames. For this purpose, ffmpeg is used to extract one frame from each segment and the compare tool (I...
by BorisS
Fri Nov 15, 2013 8:33 am
Forum: Camera board
Topic: PoC: Poor man's high framerate full HD motion detection
Replies: 25
Views: 14578

Re: PoC: Poor man's high framerate full HD motion detection

Hi James, could you also introduce an additional filename naming scheme together with this feature? Something like %mINTERGER that would work as the %d pattern in raspistill, except that segment/picture filename number is computed modulo given integer. This would allow to toggle (modulo 2) filenames...
by BorisS
Mon Oct 14, 2013 3:41 pm
Forum: General discussion
Topic: Getting lirc to work on openelec
Replies: 2
Views: 2986

Re: Getting lirc to work on openelec

Does a restart of lirc help? (Or have you already wiped you system?)

For me it helped - see: http://www.raspberrypi.org/phpBB3/viewt ... 06#p436206
by BorisS
Fri Oct 11, 2013 7:22 pm
Forum: Automation, sensing and robotics
Topic: lirc has to be manually retarted after boot
Replies: 4
Views: 4764

Re: lirc has to be manually retarted after boot

same issue on 10/2013 raspbmc, but I additionally had to delay the restart in /etc/rc.local: (sleep 5 && sudo /etc/init.d/lirc restart) & Is the fact that input device 1 from initial start is mapped before the receiver is detected the root-cause of all this mess? [email protected]:~$ dmesg | grep lirc lirc...

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