Ahsan ahsanatiq

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## ffmpeg.md

      
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                ahsanatiq
                / ffmpeg.md
            
            
              Created
              August 2, 2019 00:12
                — forked from protrolium/ffmpeg.md
            
              
                using ffmpeg to extract audio from video files
              
          
    ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:

ffmpeg -i input.mp3 output.wma
You can get the list of supported formats with:

ffmpeg -formats
Convert WAV to MP3, mix down to mono (use 1 audio channel), set bit rate to 64 kbps and  sample rate to 22050 Hz:


## coding_exemplar_answers.md

      
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                ahsanatiq
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              Last active
              July 29, 2019 08:14
            
              
                PHP Developer Coding Answers For Rebilly
              
          
    PHP Developer Coding Exemplar Anwers

Answer for question 1

The reason that the exception message was thrown in the case presented by QA team is when "superman" term came at the start of string, strpos gives 0 bcoz it founded it at the start position, hence given 0 to the if condition with ! (not) operator makes it true.
Solution:
<?php