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Questions tagged [video]

The tag has no usage guidance.

2
votes
2answers
33 views

identify abrupt frame changes in a video

The frames of live streams or videos, in general, do not flow smoothly. A sports game would have multiple cameras recording the game and hence, there will be camera switches in the stream. I am ...
0
votes
2answers
67 views

How does RAMDAC get notified about framebuffer write?

I'm learning computer graphics, and I read this course lecture in order to understand how graphics I/O works under the hood. But the following explanation was not very clear to me: The values in ...
0
votes
1answer
39 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 ...
-1
votes
1answer
71 views

Scheduling Algorithm for Video Player

Background: In a nutshell. I coded a video player application (on linux). I used a proprietary library/API, with this, video and audio frames comes with well defined format. After decoding (via API), ...
1
vote
1answer
127 views

Algorithm for weighted elliptic curve fit

Background: I was trying to detect a face solely on the bases of features and the confidence of the features found. I am using a method to identify the features along with the response (confidence). ...
0
votes
1answer
851 views

How to feed videos to a neural network

I have been coding and testing Neural Networks for a while but as of now I have only used IMAGE datasets. (i.e. I have M training images and N testing images). Some datasets are video datasets. The ...
1
vote
0answers
20 views

Convergent cameras stitching

I am currently working on a computer vision problem that involve 8 convergent cameras. I am trying to recreate a 2D image (I actually don't care of the shape of the image) that is the representation ...
0
votes
1answer
49 views

Comparing 2 video files [closed]

I have a bunch of wmv files (~300), named the following way: video1.wmv -> videox.wmv. Some of these video files, are exact ...
1
vote
2answers
502 views

How to label a video for supervised learning?

I have just started discovering the machine learning world! I found many tutorials showing how to deal with different types of data. I walked through some tensorFlow tutorials and I think they have ...
0
votes
0answers
48 views

Filter bubble algorithms for presenting related video lists

In a filter bubble, what are some of the techniques and best ways to determine the relationship between a video that is watched or liked, and the list of related videos to be presented to the browsing ...
4
votes
1answer
3k views

Why does a color video compress better than a black and white video?

It was asked in an exam why a color video compress better than a black and white (grayscale) video using MPEG but can't find anything explaining it. In other words, we would apparently get a better ...
8
votes
3answers
871 views

How does a computer play a video while doing something else?

How is video playback done on a computer? It's obviously not relying purely on the CPU, since video playback continues when a user performs another activity, such as typing into a YouTube comment ...
0
votes
1answer
81 views

Compression technique exploiting common similarities

I asked this on StackOverflow, but it was determined more appropriate to post here. So it goes like this.. For people concerned about users having slow connections and timeout issues, it is known ...
1
vote
0answers
1k views

Compare 2 video files (could be in different formats and quality) by content [closed]

I'm interested - is it possible to implement algorithm which could compare 2 video files and answer, are they the same with some level of precision. Is currently exist some methods which allow to ...
3
votes
0answers
109 views

Lossless Video Compression Pipeline

The only paper I can find about an implementation of a lossless video codec is an article by Michael Niedermayer which explains the FF1V compression pipeline. I'm wondering if anyone else has found ...
5
votes
1answer
126 views

Why are blocking artifacts serious when there is fast motion in MPEG?

Why are blocking artifacts serious when there is fast motion in MPEG? Here is the guess I made: In MPEG, each block in an encoding frame is matched with a block in the reference frame. If the ...