Questions tagged [video]

Specify video format, e.g. NTSC, ATSC, VGA, etc.

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1answer
521 views

Device for capturing analogue signal at composite video frequencies [closed]

I am trying to continuously capture and digitise raw composite video signals with sufficient bit depth and sample rate to be able to decode it including the colour channels. I am not looking for a ...
28
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3answers
16k views

Why does VGA have so many ground pins (compared to DVI-I for example)?

If you look at the pinout for VGA, there are several ground pins: I was curious as to why, and I found this answer. To sum it up, the extra ground pins are so that each pin has its own ground in ...
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1answer
54 views

Demux from 1 camera to 3 DVR's

Recently I have been experimenting on DVR devices. I have one camera however I want to demultiplex it to three 16ch DVR devices. I have been able to create a daisy chain to connect all 16 channels of ...
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3answers
2k views

Phase-locking pixel clock to HSYNC/VSYNC

I am trying to capture pixel data going to a small B&W CRT display. The signals I have to work with are the TTL-level pixel data signal, HSYNC, and VSYNC. I know the pixel clock frequency (~16 MHz)...
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0answers
50 views

What MCU-type hardware is needed to read 12-110MHz pixel data from a video decoder? [duplicate]

The goal is to display PAL/NTSC (576i/480i) video on 32x16 RGB LED matrix. Scaling down the video is thus needed. From that point it is fairly easy – 32x16 image used to drive the matrix. I have ...
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1answer
634 views

IP Camera IC (PAL to Ethernet)

I have a design problem to capture CCIR/PAL video from the camera that is available and send it over ethernet. Need to come up with my own printed circuit board design, having no prior experience in ...
2
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1answer
254 views

Raspberry PI composite color video resolution puzzle

I have a rather theoretical question. I connected my Raspberry Pi to my Composite NTSC TV and observed that the terminal video output has 640 pixels horizontal resolution with nice solid clear colors ...
0
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1answer
135 views

How is this small drone able to transmit video to such long distances? And that too an HD video? [closed]

I am an amateur enthusiast and a novice, thus please bear with me. I was having the look at the http://www.proxdynamics.com/products/pd-100-black-hornet-prs drone. It weighs 18 grams and is able to ...
0
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1answer
51 views

Translating a signal to lower voltage

I'm only a hobbyist, so there is probably an obvious/better solution that i am simply unaware of. Project description: I'm trying to build a quiet linear power supply to power a mini DSP that can be ...
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0answers
203 views

Designing a DVI/DP to VGA converter/converting 16bit bus to 8bit bus at 2x the frequency

as it turns out, new video cards no longer have analog video output. There are multiple converters available for sale, but I have not found one that can do higher resolution than 1080p at a refresh ...
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2answers
155 views

How is NTSC analog video written to a Video8 tape, or analog tape in general for that matter?

I am trying to recover some videos on a Video8 tape and was wondering how in general how analog video was written to tapes. I've been researching the NTSC specification and it seems like there are ...
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3answers
335 views

MCU Based Video Processor [closed]

EDIT: Clarify scope of question. I am planning to create a homemade Z80 computer. One thing I have been disappointed with about other designs is the lack of color graphic output, they all had text ...
3
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1answer
820 views

Rainbow artifacts in composite video

Background: I am trying to reverse engineer a small endoscopic camera for a class project. The camera is connected to its own screen, and I do not have the specs for either. Thus far I have learned ...
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1answer
47 views

Is this the correct connector to receive and split out an S-Video cable

I am looking for the correct connector to receive and give me access to each of the 4 signals on an S-Video cable. I have found this: http://uk.farnell.com/pro-signal/psg01568/socket-mini-din-4pole/...
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1answer
89 views

undefined delay of pixel data from image sensor

Would it be possible for MCUs to capture valid pixel data from Sony's IMX225LQR-C image sensor? On page 49 of this datasheet it's written that the sensor generates sync codes to distinguish between ...
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1answer
254 views

VGA display dimmer

I was wondering if it's possible to dim a VGA signal. Assume a PC with a VGA output, which is sending a VGA signal to a screen. Would it be possible by placing a microcontroller (or raspberry pi) in ...
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2answers
536 views

How can I implement a SCART switch connector

I have some experience with electronics, but no experience with AV. I would love to learn how to do something like the following: I want to build a little circuit which will do the following: ...
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0answers
222 views

Composite video out from 74AHCxx gates with 16MHz clock. Insane?

just for fun and while waiting for other components to arrive I want to build a composite video out from available hardware. So please no suggestions to just by a propeller. Available hardware: ...
0
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2answers
748 views

Smooth and no-flickering dimmable light source

My goal is to record a video with a varying intensity light source. No flickering at any frame rate (frame rate 30 60 120 240) while watching frame by frame, not human eye. Smooth dim level Any type ...
3
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2answers
241 views

Is it possible to capture a DVB-T mux's signal on VHS?

What will happen if i tune a VHS VCR's analog tuner to a DVB-T mux's frequency, record the signal on a VHS tape, then use the RF out of the VCR to replay the captured signal into a DVB-T receiver box'...
6
votes
2answers
867 views

Why the audio subcarrier is never transmitted with baseband analogue video signal?

In the era of analogue video, when you needed to connect a local video source (STB, VCR, game console, DVD player, etc.), the most ubiquitous way to do so, next to using an RF modulator, would be to ...
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3answers
146 views

How does the ELPF and XTAL inputs on the ADV7180 recommended circuit work?

I am looking at the recommended circuit for the ADV7180 by Analog Devices and trying to understand some of the reasoning behind the design choices. I realize some of these questions may be a lack of ...
6
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1answer
340 views

Lack of color displaying composite video

I'm attempting to output video from a TMS9118 VDP to a television's composite video port. Right now the result I'm getting is grey scale (whereas the background should be green), and I have no idea ...
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2answers
856 views

Composite video (one channel) to RF input of an old CRT TV [closed]

I want to convert HDMI signal to RF signal(antenna input) for my old TV (AV is input broken). If I connect Composite video (one channel) to RF input of an old CRT TV, does it work? Audio to TV is not ...
0
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1answer
528 views

Record video from webcam w/o microcontroller [closed]

I managed to salvage a webcam from a broken laptop, and I'm looking to use it to record video in a small package to attach to a rocket. However, I need to record the video to some data medium like a ...
0
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2answers
96 views

Fiber Optics as a video source and a switch?

Is it possible to put a fiber optic bundle together and play video thru the colors of the tips (if they were all flush next to each other Is it possible to touch the end of fiber optics with hand or ...
0
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1answer
859 views

How to match impedance when driving 75ohm differential video amp with single ended RS-170 video output?

I am trying to feed RS-170 video signal from a single ended amp to a differential 75 ohms video amp. When I connected RS-170 signal to + of the differential and RS-170 return to - of differential, ...
1
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1answer
3k views

PAL data with ADC?

Is it possible to receive PAL video data from ADC of STM32 for example ? I made a program which convert analog data to digital data (tested with analog accelerometer). It is the same for PAL video ...
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1answer
97 views

How to fix a frequency shifted audio part of an RF signal?

I tried to connect an old Japanese (NTSC, System M) video gaming system (an original Famicom, HVC-001) to a rather modern multisystem LCD TV-set (Sharp LC-43CFE5222E). The TV tuner is capable of ...
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2answers
2k views

Is it possible to transmitting video signal on 433MHz? [closed]

A video of 2MP or lesser at a distance of 2-3Km. Is it possible to transmit it on 433MHz ISM band?
3
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1answer
1k views

Generating video with ZYNQ, using IP block design?

I am trying to implement a video streamer on Digilent ZYBO board that has Xilinx ZYNQ 7010. By the way, reason of this thing is to test the quality of an encoder board. What I want is to: Generate a ...
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1answer
259 views

TFT LCD and PC - How to connect? [closed]

Having this specification, what pins must be connected to a VGA, DVI or HDMI cable? Unfortunately i am totaly unexperienced and do not know what informations are essential for the Question. I have no ...
0
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2answers
215 views

Ambilight without computer - µC [closed]

Firstly, sorry for my english. I'm not very confident with this language but i'll try to give my best for you guys :). So, now i will talk about my main problem. For my school project, i have to ...
0
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2answers
4k views

Convert BNC to Ethernet to Coax/HDMI

I need to make a cable run of approximately 150 feet. The source is a security camera box and the destination is a large ~42" television with all the basic hookups. The source box is in a room right ...
3
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1answer
502 views

Low-Power Video Transmission for IoT

I am currently developing an apparatus for feeding and monitoring my dog remotely. The basic idea is to make this using 2 main components: The first component will be composed of a camera pointing to ...
2
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1answer
71 views

Looking for links to projects where video decoders are used as general purpose ADCs

The pricing for high speed ADCs is very high. However, since video decoders are used in just about every flat panel display, and these generally contain a couple of ADCs, their prices are very low. So,...
0
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1answer
929 views

FPGA VGA driver not working

I am not really sure what is wrong with my code bellow for a vga. All I want the program to do is display a solid color on the monitor. I want to use the switches on my card to change the color ...
5
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1answer
25k views

What is Front Porch and Back Porch of a video signal in CRT display? [duplicate]

What is a Front Porch used for? What is a Back Porch used for? What does it mean by active video?
6
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1answer
575 views

Video Out through USB (or other means)

For an medium-high speed ADC converter, my FPGA is currently receiving 16-bit samples at 54 MHz over an LVDS interface (4 differential signal lines plus 1 differential clock signal). These are video/...
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4answers
345 views

Coaxial/UTP Equalization Circuit

I have a problem with a circuit that transmitts a video signal(PAL 1.0 Vp-p) through a coaxial cable of around 200m.My problem is that the high frequency content is really attenuated by the cable.I ...
0
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1answer
455 views

Streaming video from Beaglebone over Xbee module

I would like to stream a video feed from a camera connected to a Beaglebone Black wirelessly. However, we are talkig distances of over 4Km so I don't think a regular 2.4GHz connection would cut it. I ...
3
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4answers
4k views

8bit: How to generate video output?

I'm designing an 8-bit computer, trying to stick with low-cost components available in 1984+/-3. Following a previous question, I've completed the 6845-based hardware, except that I have no clue how ...
0
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1answer
686 views

composite (RCA or A/V jack) output Passive splitter

Im trying to connect one CCTV camera feed to a TV and an USB composite encoder at the same time. my question is, would something like this do it? I have doubts about impedance issues, in which case ...
2
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1answer
7k views

VESA CVT Standard - How to calculate video timings?

Most video resolutions like VGA (640x480), UXGA (1600x1200) or HD720 (1280x720) are defined by VESAs Coordinated Video Timing (CVT) standard. (It can be freely downloaded from VESA.org). The download ...
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1answer
392 views

How to build an FPGA based video filter? [closed]

I have a computer that outputs a low-resolution (1280x720) image via DisplayPort. I want to take this image and, by programming an FPGA, apply an image processing algorithm that 'upscales' this image ...
0
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1answer
67 views

Camera on cellphones

Why resolutions when we recording video or taking a picture with our cellphone camera are different? Video recording resolution is always so smaller compared to our photo resolution. Is it hardware ...
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1answer
1k views

How can I drive this laptop screen?

How can I drive this screen? It's a 1920x1200 display from an old Dell Inspiron 6000 which is now dead, but the screen is great and I want to use it in a project. Is that a standard (either physical ...
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1answer
1k views

Actual difference between rs 343B and rs 343A

What is the actual difference between rs 343A and rs343b? in terms of signal voltage, the number of lines and the specificiations. regards
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1answer
105 views

Simple Circuit to stream video [closed]

I want to stream online video to an LCD screen from a phone or tablet. In the circuit will also be an accelerometer, battery, and perhaps a cache (if this would improve streaming). What kinds of parts ...
2
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2answers
1k views

Send Pixels From MCU to HDMI

I would like to send pixel data from a MCU (PIC24 or PIC32) to a LCD computer monitor via HDMI. Ideally, I would only update frames as needed and not have to transmit them continually. Can it be ...

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