You can use lame with the –mp3input option. For example you can do a downsampling of the mp3 quality, specifing the a new lower bitrate using the -b option. Welcome to , a friendly and active Linux Community. You are currently viewing LQ as a guest. By joining our community you. The shuf command (part of coreutils) can do this: shuf -n file. And at least for now non-ancient versions (added in a commit from ).

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Feb 14, Posts: I’m not above using windows to do it but Linux preferred.

JPEG compression should either auto choose a level or default to 92 on a scale of 1 to with being the best. Ars Scholae Palatinae et Subscriptor. To use Script 1: And at least for now non-ancient versions added in a commit fromthat will use reservoir sampling when appropriate, meaning it shouldn’t run out of memory and is using a fast algorithm. The convert command takes an image, performs actions on it, and saves the image downsamlpe the file name you specify.

You can also use the compress option there’s an example here: From the lame downsampple page: Rinzwind k 28 Joinsubscribers and get a daily digest of news, geek trivia, and our feature articles. Note that even the examples in the manual are not sorted. Increase podcast bitrate and sampling. Alternatively, you can use ffmpeg instead of avconv. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.


That’ll almost certainly be impossible to tell for sure.

Looking for another solution. By continuing to use this website, you agree to their use. Those examples use just the standard library.

Batch Resize Images using Linux Command Line and Imagemagick

You can click save on xownsample bottom right corner of the window Figure 5. Paste one of those blocks of code into the text editor.

How to easily resize images via command-line? Post your question in this forum. So, you will not get a well spread line numbers. Thu Mar 07, 2: The files I have are mostly kbps at Hz. Are you new to LinuxQuestions. I have made the edits per question.

Best way to downsample audio [Linux] – Ars Technica OpenForum

If you want to print p out of the first downsam;le lines of the file which has potentially more linesyou’d need to stop awk at the n th line like:. As far as transparency is concerned, I don’t buy that high definition audio really is better than CD for the human ear. Thanks, I assumed too much in my first answer. I use this value often.

Atropo 9, 3 33 liux In case the shuf -n trick on large files runs out of memory and you still need a fixed size sample and an external utility can be installed then try sample: These are valid both for Windows and Ubuntu, and are focused on the task of reducing the size of an mp4 video no format conversion. How to randomly sample a subset of a file Ask Question.


Linux – Software This forum is for Software issues. One of the most basic things you can do with it is converting images between formats. As an example, it can be useful for streaming through an IceCast server.

You can do a whole directory of images in one go if you like and you don’t even have to open up an application to do so. Please visit this page to clear all LQ-related dowsample. This takes a little longer than shuf, but it randomizes the entire data. Speech compresses really well, downsampling it to 11kHz may still give acceptable results, but music can also be downsized by decreasing the bitrate or switching to mono. ImageMagick can apply a variety of effects to an image. ImageMagick is a suite of command-line utilities for modifying and working with images.

ImageMagick can quickly rotate an image.