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7 views

SFTP with Google Authenticator for 2FA

For my servers I'm currently using Google Authenticator for 2-Factor Authentication over SSH and it works as it should. One issue that I have is that trying to connecting to my servers over SFTP using ...
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1answer
12 views

What's the relationship between multiplexer and terminal?

Recently, I learned there's this tmux tool. in wiki, it defines tmux is a terminal multiplexer and I kinda get the idea of what it is capable of. But I'm a little confused about the relationship ...
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0answers
83 views

How to pass TCP-CONNECT from Internet through a Reverse Proxy to reach my local server?

I have this scenario: Some institutional severs between my institutional server and my VPS in Internet exist like men in the middle (Routers, Firewalls (NAT & Filters), DNS, SMTP relay, Proxy, ...
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2answers
31 views

How is mpeg interleaved?

I need to know after how many frames of video the audio part starts for an mpeg file. So for example, first there are 5 frames of video and after that there are 10 audio samples. This would be ...
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2answers
37 views

How to use ffmpeg to rip audio from mp4 and add it to another

I created a video using Final Cut Pro X (10.1.4) and added a commentary using the voiceover feature. I was surprised to discover that FCPX does not support outputting a file with multiple audio ...
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0answers
102 views

Invoking a local command on every successful connect when using ssh multiplexing?

I'd like to automatically run a command every time I successfully connect to a remote host via ssh. I can do this for the first connection to each host using the PermitLocalCommand yes and ...
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0answers
45 views

ConEmu reorder splits

I think this has not been asked before. Is it possible to reorder split panel areas within a tab group of running apps? For example; move split panel from top right to bottom left or move half split ...
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1answer
124 views

Virtualization and Linux Terminal [closed]

Intro I'm new to virtualization, been reading about Xen, KMV, QEMU, VirtualBox, VMWare and others. I still don't know which to implement or how, thus the post. What I want to do One physical PC ...
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0answers
146 views

Cascading KVM switches

I have a not-so-small number of computers (say, 5) which I want to access with a single keyboard, USB and monitor. I can get an 8-port KVM switch, which is a pretty expensive piece of hardware; ...
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1answer
489 views

How to multiplex two videos with ffmpeg

I'm converting videos using the -s option for multiple resulutions and I want to include a short intro at the begining of the video. but for some reason it skips the second -i so i'm only getting the ...
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1answer
2k views

Fixing an unmuxed image/jpeg stream from webcam using gstreamer

I made a broken footage using the following pipeline: gst-launch-1.0 v4l2src ! filesink location=encode.mjpeg Somehow gstreamer can still play it back: gst-launch-1.0 filesrc location=encode.mjpeg ...
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1answer
104 views

How is HDDM (not RAM!) accessed, modified and addressed in modern computers? [closed]

Warning: yeah, I know that article of Wikipedia. It's just too difficult for me! I hope that there is some person who could explain it more simply... Background: I designed a 6-bit computer. It has ...
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0answers
389 views

Why does remuxing a VOB fix freezing issues?

I am currently transcoding video data from a Video DVD to x264 MP4 files, but the original MPEG-2 streams seem to have some strange problems. This video DVD is of a home-made digital TV recording ...
2
votes
1answer
339 views

Multiplexing Internet connections

I'm looking for some way to multiplex my internet connections so that I can use them simultaneously. I have a wi-fi/lan connection and a USB dongle that let me connect to the internet, Now the ...
2
votes
1answer
668 views

How can I remux FLV movies from YouTube (e.g. into MKV)?

For some obscure reason, I have some video files I downloaded from YouTube as FLV rather than in another format. I would like to re-mux them into, say, MKV (Matroska). When trying to use ffmpeg, I get ...
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1answer
3k views

Multiple video filters in FFmpeg

I want to add a PNG watermark and then scale my video. I may add more filters. This is my FFmpeg command. sweb@sweb-laptop:/tmp$ ffmpeg -i Wildlife.wmv -sn -acodec libvorbis -vcodec libvpx -b:a 128k ...
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vote
1answer
388 views

Streaming A/V: who gets multiplexed and encoded, where and when?

I was perusing the list of VLC's supported video/audio formats and I realized that I actually know very little about streaming media. When a streaming media feed contains both audio and video, how do ...
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1answer
336 views

Splitting an HTTP request into multiple byte-range requests

I have arrived at the unusual situation of having two completely independent Internet connections to my home. This has the advantage of redundancy etc but the drawback that both connections max out at ...
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1answer
4k views

How can I multiplex a video and audio stream?

I have a seperate video and audio stream (coming from IPWebcam on an android device), and would like to multiplex (and perhaps transcode) them into a single video file, using a linux server. How can I ...
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2answers
1k views

How multiple connections with a single port are maintained

After reading about packet and circuit-switching, I've learned that servers maintain multiple connections with a port by passing down an established client connection to a child process; and that all ...
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0answers
4k views

synchronous and statistical time division multiplexing

Wiki Definitions: Statistical multiplexing is a type of communication link sharing, very similar to dynamic bandwidth allocation (DBA). In statistical multiplexing, a communication channel is divided ...
2
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1answer
4k views

embed srt into mp4/m4v

i have an converted .mp4 video file (or .m4v) + an .srt file. Is there a way for me to embed this .srt file into that mp4 file without running a complete convertion?
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2answers
6k views

What does “address data multiplexing” and “bus buffering” mean?

In my notes, I keep coming across two terms which are confusing me while looking through my notes on the 8085 processor. The first is address data multiplexing. What is meant by this exactly? I ...
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2answers
174 views

Setting up a multi monitor office status display

My office has a number of identical monitors laying around that will be trashed unless I can think of something to do with them. I was thinking of getting 2 of these and putting them in an extra box. ...
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1answer
195 views

How can i have 8 input video signals on one screen

I have 5 video siganls coming from diff cameras. I want that i can attach them to one system which can show me all cameras on one TV screen I forget what to call that system so that i can find on ...
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11answers
11k views

Inverse multiplexing to speed up file transfer

I have send a large amount of data from one machine to another. If I send with rsync (or any other method), it will go at a steady 320kb/sec. If I initiate two or three transfers at once, each will go ...
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3answers
2k views

ssh X11 forwarding issue

I have put ForwardX11 in my ~/.ssh/config and then I start a X11 application like this: ssh -f user@host 'someapp; sleep 1' This works fine. The application someapp has a button which opens a ...