Note that the ringtone should be in RTX format (a XML file that contains the ringtone name and the definition of the ringtone) while the image should be in JPEG, GIF or PNG format.

发送铃声和图像。请注意，铃声应为rtx格式(一种包含铃声名称和铃声定义的XML文件)，而图像应为JPEG、GIF或png格式。

youdao

Convert knows what image format the input and output are, based on the file extensions given on the command line. So, to convert a JPEG to a PNG, use a command line like the following.

convert根据命令行中给定的文件扩展名来了解输入和输出的图像格式分别是什么。

youdao

JPEG is a compression scheme, not a file format.

JPEG是一种压缩结构，而非档案格式。

youdao

Other tweaks suggested by the report include using the .jpeg image format instead of other file types like .gif and .png.

BBC: Poorly designed mobile sites 'drain smartphone battery'

While both the Mobile Digital Scribe and ZPen would be more palatable if they captured natively into a more standard file format such as JPEG or PDF, both do a solid job of recording pages of notes and line drawings.

ENGADGET: Switched On: More options for getting from scribble to screen