On 14/11/13 12:43, Carl Hartung wrote:
> On Thu, 14 Nov 2013 00:24:14 +1100
> Basil Chupin wrote:
>
>> My wife has accumulated quite a number of *.flv files which need
>> converting to *.mp3 so that they may be played on an mp3 device. I
>> know that VLC will do such a conversion but having to convert some
>> 200 files individually is not my idea of how I want to spend Sunday
>> afternoons :-( .
>>
>> I have checked the 'net and came across a couple of suggestions on
>> how to batch-process these files using ffmpeg- but they don't work in
>> all cases, they convert some of the files but not all for some reason.
>>
>> Does anyone, please, know of a reliable method of how a batch convert
>> from *.flv to *.mp3 can be done?
>>
>> (There are also some files which are *.avi and *.wav but I guess that
>> I can use the slow method of doing them with VLC - but if there is a
>> faster way.......?)
>>
>> BC
>>
> Hi Basil,
>
> You've already been given the basics but I've done enough of this that I
> simply can't _not_ throw in my 2 cents.
>
> Below is the simple looping script that I use. YMMV depending upon your
> hardware but I always set it up to read the source from one physical
> drive while writing to another ... it's faster and less stress on the
> drives.
>
> - - - - - 8< - - - - -
>> #!/bin/bash
>> # for all .flv files, extract .mp3 audio content
>> FILES="*.flv"
>> # for loop read each file
>> for f in $FILES
>> do
>> INF="$f"
>> OUTF="/TARGET/PATH/$f.mp3"
>> ffmpeg -i $INF $OUTF
>> done
> - - - - - 8< - - - - -
>
> common ffmpeg audio options:
>
> `-ar freq'
>      Set the audio sampling frequency (default = 44100 Hz).
>
> `-ab bitrate'
>      Set the audio bitrate in bit/s (default = 64k).
>
> `-ac channels'
>      Set the number of audio channels. For input streams it is set by
>      default to 1, for output streams it is set by default to the same
>      number of audio channels in input. If the input file has audio
>      streams with different channel count, the behaviour is undefined.
>
> e.g. ffmpeg -i somefile.flv -ar 44100 -ab 64k -ac 2 /path/somefile.mp3
>
> hth & regards,
>
> Carl

Many thanks for this, Carl! Something which works! But with qualifications.

I cried and gnashed my teeth because the above failed to work - until I 
decided to try it in oS 12.3 and not the 13.1 I have been using for 
quite some time.

In 12.3 the above works - in 13.1 it doesn't: all generated files have 0 
bytes.

But even in 12.3 there is a vital requirement: the file names cannot 
have blank spaces in them. That is, Men At Work will not be processed 
(No such file or directory) but Men_At_Work, for example, will get 
converted.

And lastly, but not a show-stopper, is that '.mp3' is appended to the 
name of the .flv file so that the new name comes out as Men_At_Work.flv.mp3.

Thanks again for the above script.

(And now to go thru ~200 files and rename them not to have any blanks in 
their name :-) .)

BC

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AMD FX 8-core 3.6/4.2GHz processor
16GB PC14900/1866MHz Quad Channel Corsair "Vengeance" RAM
Gigabyte AMD3+ m/board; Gigabyte nVidia GTX660 OC 2GB DDR5 GPU


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Hallo Basil, op 14-11-13 12:00 schreef je:

(And now to go thru ~200 files and rename them not to have any blanks in their name :-) .)

Maybe a script could be useful: http://www.tekstbaken.nl/efkus/spacereplace.zip Harrie -- Harrie Baken | Tekstbureau TekstBaken Copy-editing - proofreading - seo http://www.tekstbaken.nl/ Registered Linux user #366560 | openSUSE 12.3 -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org

Le 14/11/2013 12:00, Basil Chupin a écrit :

(And now to go thru ~200 files and rename them not to have any blanks in their name :-) .)

in my pohoto workflow, I have this step: I name this script: normalize-randomizez-photo.sh. detox is easy to find. Last part changes JPG to jpg and then add a ramdom part (to prevent robots from taking all my shots in a go) you can do the same for any file #!/bin/sh # usage: se placer dans le répertoire #lancer "sh normalize-randomizez-photo.sh" #On se retrouve avec les fichiers anonymisés et normalisés detox -s utf_8 * for I in *.jpeg ; do rename -- "jpeg" "jpg" $I ; done for I in *.JPG ; do rename -- "JPG" "jpg" $I ; done for I in *.jpg ; do ran=-$RANDOM ; rename -- "." "$ran." $I done I have also a "mp4tomp3 script (good for any video) that adress your exptension file problem: #!/bin/bash # echo usage: movtodvd.sh *.MOV for a ; do b=`echo "$a" | cut -d'.' -f1` ; ffmpeg -i $a -ar 44100 -ab 192k $b.mp3 ; done exit jdd -- http://www.dodin.org -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org

On 15/11/13 00:34, Carl Hartung wrote:
> On Thu, 14 Nov 2013 22:00:53 +1100
> Basil Chupin wrote:
>
> 
>> Many thanks for this, Carl!
> You're welcome!
>
>> Something which works! But with qualifications.
>>
>> I cried and gnashed my teeth because the above failed to work - until
>> I decided to try it in oS 12.3 and not the 13.1 I have been using for
>> quite some time.
>>
>> In 12.3 the above works - in 13.1 it doesn't: all generated files
>> have 0 bytes.
> I've only relatively recently completely tamed 12.3 here. I need to
> restrain myself because it's my workhorse. :-) You're probably still
> taming 13.1 there. Give it time. ;-)
>
>> But even in 12.3 there is a vital requirement: the file names cannot
>> have blank spaces in them. That is, Men At Work will not be processed
>> (No such file or directory) but Men_At_Work, for example, will get
>> converted.
> I don't do file names with spaces in them. :-) Sorry I forgot about
> that scenario. It was late...
>
>> And lastly, but not a show-stopper, is that '.mp3' is appended to the
>> name of the .flv file so that the new name comes out as
>> Men_At_Work.flv.mp3.
>>
>> Thanks again for the above script.
>>
>> (And now to go thru ~200 files and rename them not to have any blanks
>> in their name :-) .)
> Here's the solution I found for the *.flv.mp3 --> .mp3 problem. You
> certainly don't need to do this job by hand! Place it in your ~/bin,
> (chmod it you already know) and invoke it in the directory with the
> offending double extensions.
>
> - - - - - 8< - - - - -
>> #!/bin/bash
>> # rfe.sh: Renaming file extensions.
>> #
>> #         rfe old_extension new_extension
>> #
>> # Example:
>> # To rename all *.gif files in working directory to *.jpg,
>> #          rfe gif jpg
>>
>>
>> E_BADARGS=65
>>
>> case $# in
>>    0|1)             # The vertical bar means "or" in this context.
>>    echo "Usage: `basename $0` old_file_suffix new_file_suffix"
>>    exit $E_BADARGS  # If 0 or 1 arg, then bail out.
>>    ;;
>> esac
>>
>>
>> for filename in *.$1
>> # Traverse list of files ending with 1st argument.
>> do
>>    mv $filename ${filename%$1}$2
>>    #  Strip off part of filename matching 1st argument,
>>    #+ then append 2nd argument.
>> done
>>
>> exit 0
> - - - - - 8< - - - - -
>
> regards,
>
> Carl

Thank you to everyone who provided me with help re this. I will reply 
later but at the moment I have other matters pressing on me.

But I just have to say that the bunch of knowledgeable guys on this list 
is phenomenal and unequalled on any other list I have been on.

BC

-- 
Using openSUSE 13.1, KDE 4.11.3 & kernel 3.12.0-1 on a system with-
AMD FX 8-core 3.6/4.2GHz processor
16GB PC14900/1866MHz Quad Channel Corsair "Vengeance" RAM
Gigabyte AMD3+ m/board; Gigabyte nVidia GTX660 OC 2GB DDR5 GPU


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