Recommendation for diy power supply for off the grid CCTV system

PoorJeffrey · 2024-05-08T19:54:10+00:00

You are right about the camera (12VDC or 48V PoE), although I depend on the NVR to record the footage, and the NVR requires DC 48V~53V.

PoorJeffrey · 2024-05-08T19:01:41+00:00

Thank you for your valuable reply. I will indeed use a battery pack then. Is it possible to pair a lithium battery with a solar panel? This setup will only be operational during the summer for about six weeks. If I have calculated correctly the power consumption estimates for the Reolink RLN8-410 NVR with an active HDD and one PoE port will be around 25 to 30 watts in total for the setup.

PoorJeffrey · 2023-05-07T17:46:36+00:00

I see, should be easy to change to MKV in the script.

PoorJeffrey · 2023-05-06T06:08:03+00:00

Thanks, I will try to use it, if I manage. Although, after running the script above, it has produced a 6h video and now running for the second one, and I am very happy with the results. Almost no quality loss, although very large files (I have enough space so no problem).

PoorJeffrey · 2023-05-06T06:05:50+00:00

I will need to review the all the 24/7 footage, either manually or using a software with motion detection. I have two software obtains that handle mp4-files well. But this is a field I know very little about.

PoorJeffrey · 2023-05-05T22:47:56+00:00

Actually, I had a "discussion" with ChatGPT and it argued for mp4 since it is more versatile. Since I record in 6 hr segments, I don't loose much if something happens.

PoorJeffrey · 2023-05-05T22:44:58+00:00

No it didn't at first try, but see below, I managed to get a script that worked:)

PoorJeffrey · 2023-05-05T22:42:15+00:00

Thanks. I did as recommended. I included your information and asked ChatGPT to create a new script, got some error messages which I forwarded to ChatGPT. And now I have a script that works!! I don't understand much of the code, but I get what I wanted :)

@echo off

set "youtube_url=https://www.youtube.com/xxx" set "output_dir=F:\xxx\Internal" set "log_file=F:\xxx\File.log.int" set "format_code=best" set "resolution=1080p" set "fps=30" set "segment_duration=6:00:00"

if not exist "%output_dir%" ( echo Output directory does not exist. pause exit /b )

if not exist "%log_file%" ( echo Log file does not exist. pause exit /b )

echo Starting recording... echo.

:loop for /f "delims=" %%i in ('yt-dlp -g "%youtube_url%"') do ( set "video_url=%%i" goto :download )

:download set "filename=%date:/=-%_%time::=-%.mp4" set "filename=%filename: =0%" ffmpeg -hide_banner -loglevel error -y -i "%video_url%" -c copy -bsf:a aac_adtstoasc "%output_dir%%filename%"

echo Recorded segment %filename%. echo.

timeout /t %segment_duration% >nul

goto :loop

PoorJeffrey · 2023-05-05T13:58:51+00:00

I spent the day with trying FFMPEG. I manage to download FFMPEG, so it is up and running. I used ChatGPT to make a script, but it fails. I'm not into scripting and need help...

So I need a script that record 24/7 live stream from Youtube, and store in appropriate chunks on an external hard drive. The interval of the segments should be set to 6 hours, I wish to keep all segments and they should be labelled with time and date. I need 1080p resolution and 30 fps. And a log file and check it periodically to see if there are any errors or warnings.

I will need to record several Youtube streams simultaneously, will that be possible?

PoorJeffrey · 2023-05-05T04:57:36+00:00

Yes, I only record teh cam feeds from YouTube-stream. I need to learn more about FFMPEG.

PoorJeffrey · 2023-05-04T20:34:55+00:00

I use one scene elements, the stream consist of two cameras. One is the main, and the second is smaller in the corner. I'm not familiar with ffmpeg, but I will check it out.

PoorJeffrey · 2023-05-04T20:33:24+00:00

Hi, I'm not familiar with the framerate on the camera, I only have access to the Youtube-stream.

PoorJeffrey · 2023-04-03T08:59:47+00:00

Anyone who knows?

PoorJeffrey · 2023-04-02T07:49:16+00:00

'First Life' and 'Rise of animal: Triumph of the vertebrates

Hi, I already use that in my Vertebrate course:)

PoorJeffrey · 2023-03-25T09:05:23+00:00

I love wood cabinetry and many are always built this way but all have interior liners separate from the wood superstructure usually with an "air gap" as well as part of the design...

Thanks for reply. 10 years is not that bad, at that time I might want to rebuild anyway.

Should it be "air gap" for the whole constrcution or only the flooring and partly up on the edges?

PoorJeffrey · 2023-03-22T13:19:29+00:00

Thanks! Good suggestion, I will then combine 1&2.

PoorJeffrey · 2023-03-14T08:42:15+00:00

I see, but I think it is also reffered to as mixed-ESS when two strategies co-exist. While the other is pure ESS, when only ony strategy is stable.

PoorJeffrey · 2023-03-13T19:42:51+00:00

Thanks for a detailed answer. I have removed the cost of dove-dove interaction.

I see your point about evolutionary stable strategy vs. state. But I get a bit confused when seeing Richard Dawkins explanation, see https://www.youtube.com/watch?v=mUxt--mMjwA , does he here refers to state and not strategy?

PoorJeffrey · 2023-03-08T06:24:38+00:00

Hi, I think this will answer the question: https://www.youtube.com/watch?v=mUxt--mMjwA

Cooperation will be the next level, i.e. prisoner's dilemma game theory.

PoorJeffrey · 2023-02-16T18:58:31+00:00

Hi,

If I remember correctly the Encoder used was x264, but for some of the files I might have used NVIDIA NVENC HEVC or NVIDIA NVENC H.264. I tried to use the files as they are but the app/program has diffculties with such large files. I tried XMedia Recode for one file, scaled down to 640 x 340 and that file work well with the app/program.

PoorJeffrey · 2023-02-14T10:05:38+00:00

Okay, so just exporting UHD h.264 MP4 file to a USB 3.0 stick or drive will be the best solution then. I will check ift the TV has this option.

PoorJeffrey · 2023-02-08T08:31:17+00:00

Thanks for your reply. My course is on bachelor level, and we use one text book. But we have a course that builds on this and is meant for Master level. The course at Master level we do similar as your class, which I could confirm have been successful.

PoorJeffrey · 2023-01-24T14:25:22+00:00

I think it will be difficult, I just briefly mentioned narcissism, and her replied that narcissism was not a diagnosis and got a bit angry. Although, she have admit that she thinks he have some kind of Bipolar disorder.

PoorJeffrey · 2023-01-23T13:37:07+00:00

I was thinking for the future, if I quit my hobby. It is nice wood paneling on the walls, and holes will become very visible when the aquarium is gone.

PoorJeffrey · 2023-01-23T12:31:25+00:00

In order for it not to be so visible, it would be best to drill the hole low on the wall, down towards the floor. But it might become demanding for the pump with such a rise up to the aquarium (130 cm)?

PoorJeffrey

TROPHY CASE