amazon web services - Elastic Transcoder: Duplicate output key error -


over last day started getting interesting error when trying push transcoding job php sdk:

'aws\elastictranscoder\exception\elastictranscoderexception' message 'error executing "createjob" on "https://elastictranscoder.us-east-1.amazonaws.com/2012-09-25/jobs"; aws http error: client error: 400 validationexception (client): playlists '64k' duplicate of output key. - {"message":"playlists '64k' duplicate of output key."}' in /var/www/html/app/1.0/vendor/aws/aws-sdk-php/src/wrappedhttphandler.php:152

the settings we're pushing elastic transcoder:

        'pipelineid'      => $this->config['pipeline_id'],         'outputkeyprefix' => "$prefix/",         'input'           => [             'key' => "uploads/$input_filename.$input_extension",         ],         'playlists'       => [             'outputkeys' => [$bitrate],             'name'       => $bitrate,             'format'     => 'hlsv4',         ],         'outputs'         => [             'presetid'        => $preset_id,             'key'             => $bitrate,             'segmentduration' => '9.0',         ],

where $bitrate '64k' (target) end result of transcoding job creating files: 64k.ts, 64k.m3u8, 64k_v4.m3u8.

my first thought possibly s3 key conflict due prefix existing after clearing output bucket error remained. , far i'm aware 64k.ts , 64k.m3u8 treated distinct objects in s3.

does duplicate output key in case refer s3 object or perhaps conflict in transcoding job?

further info: changing playlists:name bitrate, $bitrate . '_v3', seems prevent error. can still go output bucket @ specified prefix , rename 64k_v3.m3u8 64k.m3u8 no issues. in case, why elastic transcoder blocking creation of playlist named 64k.m3u8?


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