- Extension
- .f4v
- .amr
- Format
- Binary
- Binary
- Category
- Video
- Audio
- Developer
- Adobe Systems
- Nokia
- Description
- Video container format used by Adobe Flash; based on the ISO MP4 format, which is based on the Apple QuickTime container format; specified by ISO/IEC 14496-12 as a base media file format; supported by Flash Player Update 3 (9,0,115,0) and higher.
- An AMR file is an audio file saved in a compressed audio format developed by Ericsson. It is used by many 3G cell phones for voice recordings such as MMS messages. AMR files incorporate the Algebraic Code Excited Linear Prediction (ACELP) algorithm, which is designed to efficiently compress human speech audio.
- MIME Type
- video/x-f4v
- audio/amr
