Questions tagged [signal-processing]

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0answers
17 views

Remove vertical jumps from captured VHS video

I was watching the following video on youtube, and as you can see, the whole frame just jumps up for single frames at random intervals, always to the same height. It seems to me that this would be ...
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0answers
92 views

Sample K representative frames within a video

I have an image-based processing module that takes photos for some computer vision processing. I have many videos, but I need to sample representative frames as its inputs, preferably those frames ...
2
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1answer
646 views

I want to compare two video files using FFPLAY

One of those videos lower resolution, another one is higher ffplay.exe -i [PATHTOFILE][org] -i[PATHTOFILE][enc];\ [org][enc]blend=all_mode=difference"enter code here but i got error No such ...
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2answers
32 views

Can running a video over ethernet be split?

Running video over ethernet isn't something new, but is it possible to split the video signal (over short runs) without losing video signal - or at all? I know you can buy these sort of items (just ...
1
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2answers
53 views

Why recording a still image using a mobile camera is taking up more space?

I know basic video compression technique .In that it reduces spatial redundancy and temporal redundancy.If it is so why recorsing still image using camera takes more space.Why compression technique ...
0
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1answer
49 views

Datavideo KMU-100 FORMAT

I was able to get only one 4k camera signal into my KMU-100,to get 4 HD outputs. The issue am facing right now is, How do i get my two 4K cameras working on the KMU-100? Because,the format i used for ...
-1
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1answer
692 views

How to record HDMI video with USB?

I have a camera that can only provide a HDMI output. It does not have in-built recording capabilities as it is basically meant to be displayed directly on a screen. My Goal? I want to record ...
0
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1answer
38 views

Is it possible to capture video signal waveform as audio for video replay?

I am an electronic musician. For artistic purposes, I want to be able to record a video signal to a .wav file and replay that signal into a TV as video. It seems like it should be simple--if I ...
0
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2answers
57 views

Remove an image through subtraction?

Firstly, I'm no video professional, I'm an audio professional. Video theory is a dark area for me. So I will use an audio-type analogy in this question. In audio editing, it is possible to subtract ...
-3
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1answer
95 views

What is the state-of-the-art on using computers to “clean-up” videos?

TWO PART QUESTION - We've all seen the movies/TV shows where the police/feds/spies use computer software to take a grainy photo and do a "clean-up" to see a better picture and more details. I assume ...
1
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1answer
1k views

how to measure bitrate of video over time

Given an encoded video file with non-constant bitrate, how would one analyze the bitrate over time? So far I found one old program that produces a bitrate plot, but none that can give the raw data of ...
3
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1answer
56 views

Need to learn about Video stitching

I need to start learning about video stitching. I have studied about this and have some knowledge that the video should be converted into image sequences, then image alignment is done [geometric and ...
0
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0answers
24 views

SDI Converters from Many other Forms

I need a Converter from DVI, VGA, and CVBS to SDI. The most important thing is that this converter don't change the signals informations, I want it just to convert the signal. Is that even possible ?
1
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1answer
66 views

Live-video beginner, where to start?

I'm part of the multimedia team at a conference, where I'm responsible for the live-video. I know what cable to connect, but I've got no idea what kind of signal it is and when something doesn't work,...
3
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1answer
165 views

Frame rate conversion during playback for maximal smoothness

So I watch my 25 fps DVD on my 60Hz LCD monitor... For now lets assume everything is progressive scan. It seems that current DVD programs (and all media players on PC's, like youtube, vlc, etc.) ...