3GP is a digital media container format developed by the Third Generation Partnership Project (3GPP). It stores both audio and video streams that are transmitted via 4G, 3G, and 2G mobiles phones. Here, the video format is saved in H.264/H.253 codec, while audio is streamed in AAC-LC, HE-AAC v1, AMR-NB, AMR-WB, AMR-WB+, or Enhanced aacPlus.
MPLayer AIMP Apple QuickTime Player VLC Media Player
A file with a .trp filename extension is an HD (High Definition) video file that uses MPEG-2 compression. TRP files are typically used to synchronize audio and video codecs in DVB (Digital Video Broadcasting). The video codec is usually H.264, whereas audio data comes in AC3 format. This makes the TRP format to be supported by most media player programs.