[mdlug] Ffmpeg Problem - Workshop 6/25 Dearborn

[gib at juno.com]

I see no one has signed up for the video and audio workshop Monday 6/25 at the Dearborn Library. This type of thing would be a great topic for this workshop.  I'm hosting the event but I don't have much experience with this. Can we get interested people to sign up?  Can some of you experts who worked on this email help out?  I'm thinking we won't have anyone show up for this workshop even though we have plenty of iinterest in the topic. Link to the details:http://dearbornlibrary.evanced.info/eventsignup.asp?ID=1493&rts=&disptype=&ret=eventcalendar.asp&pointer=&returnToSearch=&num=0&ad=&dt=mo&mo=6/1/2014&df=calendar&EventType=ALL&Lib=&AgeGroup=&LangType=0&WindowMode=&noheader=&lad=&pub=1&nopub=&page=&pgdisp=

---------- Original Message ----------
From: "Ingles, Raymond" <Raymond.Ingles at compuware.com>
To: MDLUG's Main discussion list <mdlug at mdlug.org>
Subject: Re: [mdlug] Ffmpeg Problem
Date: Wed, 18 Jun 2014 13:58:14 +0000

> Frank Peters
> Subject: Re: [mdlug] Ffmpeg Problem

>> On Wed, 18 Jun 2014 11:57:36 +0000
>> "Ingles, Raymond" <Raymond.Ingles at compuware.com> wrote:

>> Yup. Here's a little script I use to convert videos to mp3s:
>> #usage: file title artist album
>> mplayer -benchmark -vc null -vo null -ao pcm:fast:file=temp.wav $1

>Doesn't mplayer use ffmpeg as a backend?  Using mplayer is then no different from using ffmpeg.

Not necessarily, but in any case mplayer's options can be easier to control. I've got plenty of experience with it, and the mencoder companion app.

> It would be best to dump the audio in its compressed form, whatever form that may be, and then use it in that form only.

...in a perfect world. But MP3 files play everywhere, and LAME in "--preset standard" mode produces a dynamic VBR (variable bit rate) file that is, in my experience, indistinguishable from the original.

> Of course all of this is moot unless you are a technical purist since any differences may not be audible.

Precisely. I'm not an audiophile, and based on testing my ears have already pretty much lost frequency response above 14KHz, so absolute audio fidelity is not my priority. Something that can play in any device I throw it at, is. Plus there are tools like mp3gain which allow fully-reversible gain adjustment. The AAC format, for example, doesn't offer that.

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