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0answers
43 views

ffmpeg: cut multiple input files with seeking to one output file

I have list of video files (loaded from database), each with start and end time of requested interval: # file begin end v1.mp4 1:01 2:01 v2.mp4 3:02 3:32 v3.mp4 2:03 5:23 And ...
3
votes
5answers
599 views

If we only know that a video is 720P, 480P or 240P can that unambiguously tell us of the resolution?

The main issue I have here is are the 720P, 480P, 240P... classes for defining video quality or do they unambiguously define the resolution of the video? For example, the wikipedia article about 240P ...
1
vote
2answers
96 views

Can I use the code for responsive video on this github link under a license?

This is the link: https://gist.github.com/jgarber/2302238 I am new to github and web development.So please bear with my questions. I would like to use the responsive video code on the link mentioned ...
1
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4answers
516 views

How do you evaluate learning C# from videos for a beginner? [closed]

I have an idea about programming in general so I know what a variable and a method is but I didn't program before. I liked C# because of Visual Studio and I only tried Hello word program in it. I ...
0
votes
2answers
148 views

Is it possible to build software that interprets video in real time? [closed]

Say you had a live video stream of a popular boardwalk that had thousands of pedestrians walk down it each day. Could software be written to count the number of people that walk by a camera and ...
0
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2answers
134 views

Average video frame size for video codec

In simple words, is it true that an average size of an encoded video frame would be FrameSize = BitRate/FrameRate? Because BitRate shows how much data we are transferring per time unit, and FrameRate ...
0
votes
0answers
185 views

Video streaming, with minimum delay

My goal is to stream a video from my pc, to a smartphone. However, i want the latency between us to be minimal. VIDEO -> ENCODING -> TRANSFER -> DECODING -> VIDEO I already know that the transfer ...
2
votes
2answers
210 views

Taking an audio file, automatically transcribing it, taking the output, and matching it to a transcript

We have transcripts of around 8000 videos. However, these transcripts do not have any timed text (ie: they are not time coded to the video) We are trying to ascertain whether software exists, or ...
4
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1answer
6k views

Does FFMpeg support gpu acceleration of media encoding/decoding?

I was wondering if ffmpeg supported gpu acceleration. I was reading on their websites and came across contradicting information. http://www.ffmpeg.org/general.html#Video-Codecs -H.264 / AVC / MPEG-4 ...
2
votes
1answer
99 views

How does recording video and playing it back in realtime work? [closed]

I am looking to understand how recording video (and audio) and playing it back in realtime work (on the same pc or over a network)? I understand for a file stored on the disk. You read it and play it ...
4
votes
1answer
702 views

What are MPEG I, P and B frames?

I was recently going over MPEG articles and videos to understand how it works. I understand what I, P and B frames do but I do not understand how the prediction is calculated. Assume that I want to ...
2
votes
5answers
658 views

What are the benefits and drawback of documentation vs tutorials vs video tutorials [closed]

Which types of learning resources do you find the most helpful, for which kinds of learning and/or perhaps at specific times? Some examples of types of learning you could consider: When starting to ...
0
votes
1answer
173 views

What are some feasible ideas for building a smart-device/console development portfolio? [closed]

I would like to start getting more contracts in the mobile, smart-device, and console development space and, having little prior work experience in the field, I need to build a portfolio of example ...
1
vote
1answer
130 views

Is it possible to modify a video codec + distribute it?

this is my first question on this particular stackexchange node, not sure if it's the most appropriate place for this question (if not, guidance to the appropriate node would be appreciated). the ...
6
votes
1answer
429 views

Help me understand how to stream video

I'm an experienced PHP web developer that is looking to understand the options available for streaming video. What I have: a video processing system (this one) that can provide output to various ...
19
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4answers
4k views

The perfect crossfade

I find it hard to describe this problem in words, which is why I made a video (45 seconds) to illustrate it. Here's a preview of the questions, please have a look at it on Vimeo: ...
4
votes
3answers
2k views

Advantage of using Swing over AWT [closed]

Why is Swing preferred over AWT? Which Swing component could be used for playing a video on it?