Linux command line

Increase video volume using ffmpeg

  • Posted on: 17 September 2021
  • By: dexter

Sometimes recorded video, screecasts etc have a low volume, if you want to increase the volume without getting into too much complication, you can simply use ffmpeg for the same.

The command:

ffmpeg -i foo.mp4  -filter:a  "volume=5.0"  foo-high-volumet.mp4


ffmpeg is the command

-i assigns input file i.e. foo.mp4

-filter: for audio filter

Trim video file using ffmpeg

  • Posted on: 16 April 2021
  • By: dexter

Today almost everyone need to cut or edit a video some other time. You can use ffmpeg for the same. 

It is an interesting command line utility and can do a lot of stuff.

Here we will see how we can simply cut a part of a video.

What we have:   foo,mp4   our video file of 10 minutes length.

We want to chop of some extra part from the end, say we just want the video from the begining till the 9th Minute.

ग्न्यू/लिनक्स सिस्टम में अलग-अलग कमांड के बारे में सहायता कैसे पाएं

  • Posted on: 27 May 2020
  • By: dexter

एक ग्न्यू/लिनक्स यूजर/एडमिनिस्ट्रेटर होते हुए आपको कभी ना कभी कमांड लाइन पर काम करना ही पड़ेगा । ग्न्यू/लिनक्स सिस्टम में सैकड़ों कमांड होती है । कभी ना कभी आपको इन कमांड की बारे में अधिक जानकारी की आवश्यकता पड़ेगी। या फिर कभी आपको यह पता लगाने की आवश्यकता होती है कि जो काम आप करना चाहते हैं उसके लिए कोई कमांड उपलब्ध है क्या।

How to get help for different command in GNU/Linux

  • Posted on: 27 May 2020
  • By: dexter

As an administrator/user of GNU/Linux you will be working on the command line one or the other time. There are hundreds of commands available in the system and each command has multiple options. Once in a while we need help on these command or sometime we need to find out if there is a command to do something which we want to get done.