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bash script : is it possible to recognize video format from files (to batch extract audio from them)?

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http://askubuntu.com – I have written a little bash script to extract audio from video files in batch mode. Sound is extracted from each mp4 file to flac format using avconv (and the flac codec). #!/bin/sh # # Batch conversion of audio extraction from video FOLDER_SRC="/home/Me/Music/TestBatchConv" for myvid in $(find ${FOLDER_SRC} | grep mp4) do avconv -i $myvid -acodec flac "${myvid}.flac" done exit 0 It works fine, but I would like to improve it. The script only detects mp4 format. Is it possible to recognize a video file with a command (instead of testing each video format) ? Thank you for advices. (HowTos)

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Submitted by Songlist on 03/07/2013 – Made popular on 03/07/2013

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How do I rip audio from a DVD?

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More and more audio CD are sold together with a DVD video containing bonus tracks.

In my previous installments, I described the success I've been having with compressing "Sita Sings the Blues" with the VP8 video codec, and at the end I had a video file. Then I converted the audio to get a FLAC copy of the soundtrack (opting to retain this rather than compress into Vorbis format).

I've read around, but I can't seem to wrap my head around this. I'm converting ripped files I made in flac to mp3 for a mp3 player.

Ogg Vorbis and Ogg FLAC (the Ogg stream version of the Free Lossless Audio Codec) are popular free-licensed and patent-free codecs for handling sound. These are the formats I’ll be using in a complex Ogg Theora video file that I am creating as part of my “Lib-Ray” experiment in creating an alternative format for distributing high definition video.

I've recently upgraded to Ubuntu 12.10 and am attempting to use avconv (in place of ffmpeg) to extract a clip from a longer video.

The command syntax that I am using is

avconv -ss <start-time> -t <duration> -i input-video.mp4 -codec copy output-clip.mp4

So as I want a 1 minute clip starting 30 seconds into an AVI file

avconv -ss 00:00:30 -t 00:01:00 -i input.avi -codec copy

FF Multi Converter is a simple graphical application which converts audio, video, image, and document files between all popular formats, using and combining other programs. It uses ffmpeg for audio/video files, unoconv for document files, and the PythonMagick library for image file conversions.

Batch extract audio with avconv 20 weeks 8 hours ago

I have about 70 mp4 files, and I want to extract the audio files directly without transcoding further. All the mp4 files have aac audio files.

I understand I can use the following command to extract the audio file from one of the mp4 files:

avconv -i "INPUT FILE" -map 0:1 -c:a copy "OUTPUT FILE"

How do I extract all the audio files from all the 70 mp4 files, so I end up with 70 aac files?

Introduction If you have a music video on your computer, and you want to extract the audio to put it on your cellphone, your mp3 player, your car stereo or any other place you want to hear the music in that video, you can use ffmpeg to extract the audio. Please be sure to respect all copy rights before using this command. How to extract audio mp3 from a video file Maybe the most useful application

hi all i have question how to convert and extract audio from video file, i have try avconv but it says the codec was unknown i also write -acodec mp3 libx264 h264 and other codec but but the avconv always says unknown codec and so the winff, winff however can convert to wma or audio file but its corrupted, am i should download the codec?