[FFmpeg-user] using atempo in PHP

[Reindl Harald]

because "atempo" is NOT a param, you missed -filter:a
the things starting with - are params
the values after params should be escaped
genearlly, everywhere if you generate shell-commands

-filter:a 'atempo=1.5'

Am 15.10.2012 16:46, schrieb Jevlachov D.:
> It was wrong path to ffmpeg.
> That's what I have now:
> 
> $path = '/usr/bin/ffmpeg';
> $source = 'Help_-_The_Beatles.mp3';
> $target = 'converted.mp3';
> $exec_string = $path.' -i '.escapeshellarg($source).' atempo=1.5
> '.escapeshellarg($target).'  2>ffmpeg.log &';
> echo exec($exec_string);
> 
> It gives me: Unable to find a suitable output format for 'atempo=1.5'
> I guess something is wrong with $target. Can't figure out what.
> What I need is just simple speedup (atempo) of given mp3.
> 
> On Mon, Oct 15, 2012 at 6:39 PM, Reindl Harald <h.reindl at thelounge.net>wrote:
> 
>>
>>
>> Am 15.10.2012 13:18, schrieb Tom Evans:
>>> On Mon, Oct 15, 2012 at 11:08 AM, Jevlachov D. <jevlachov at gmail.com>
>> wrote:
>>>> Can't figure out how to use atempo properly.
>>>>
>>>> part of the script looks like this:
>>>>
>>>> echo shell_exec("ffmpeg -y -i original.mp3 -filter:a
>>>> atempo=1.5 converted.mp3 2>ffmpeg.log &");
>>>>
>>>> (example code taken from here
>>>>
>> http://ffmpeg.org/trac/ffmpeg/wiki/Using%20FFmpeg%20from%20PHP%20scripts)
>>>>
>>>> It returns "sh: line 1: converted.mp3: command not found" in log file.
>>>>
>>>> Thanks!
>>>
>>> That sounds more like you can't figure out how to use PHP properly
>>> tbh. Put another way, you're not even running ffmpeg yet..
>>>
>>> Is there not a PHP command that allows you to specify the command and
>>> arguments as an array, bypassing all that shell nonsense?
>>
>>
>>
> 
> 
>>
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>>
>>
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-- 

Reindl Harald
the lounge interactive design GmbH
A-1060 Vienna, Hofmühlgasse 17
CTO / CISO / Software-Development
p: +43 (1) 595 3999 33, m: +43 (676) 40 221 40
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