Converting video to a is a common requirement for older portable MP3/MP4 players (often referred to as "cheap" or "no-name" Chinese players) that use specific, aging chipsets like Actions or Shenju YP3 . These devices are highly sensitive to encoding settings; if the bitrate or codec is slightly off, they will display "File Format Not Supported". Why Most Modern Converters Fail
You can find hundreds of free video converters online, but they are "generalists." An is a specialized tool. Here is what sets it apart: avi 128x160 converter exclusive