[FFmpeg-user] Detecting errors

[Michael Bradshaw]

On Thu, Aug 16, 2012 at 8:20 PM, Rossana Guerra
<guerra.rossana at gmail.com> wrote:
> 2012/8/16 Murthy avsn <avsn9849625263 at hotmail.com>
>
>>
>> > >
>> > > Hi all,
>> > > I am calling 'ffmpeg' from PHP to encode a video.here id how I am
>> calling. exec(''ffmpeg -i inputfile outputfile 2>result.log");
>> > > I am trying to redirect stderr to a text file.ProblemI was expecting
>> only errors to be written to log file but the entire console output is
>> being written to file.Is there a way to only display error with ffmpeg.How
>> can I find a encoding failure by looking at the console out put.
>> > > Please help me.
>> >
>> > Look into the -loglevel option. If you set it to "-loglevel warning"
>> > or "-loglevel error" you'll just get messages with a minimum priority
>> > of warning or error (respectively).
>> >
>> > --Michael
>>
>>
>> Thanks Michael
>> I think -loglevel 'error' is working for me.I am also using -report to
>> make output of the command to a file .
>> Thank you all.
>>
>
> the loglevel error didn't work for me...it was empty all the time.
> Why was so?

Were you 1) reading from stderr (and not stdout) and 2) getting errors
(if there are no errors, you'll get... no errors)?

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Please trim this above part when quoting :)

--Michael