Encoder Options for mp4 Files

This file format can be used on iPod, iPhone, PSP, PS3 and other devices.

Video Compressor

MP4 files are saved using H.264, MPEG4 or H.265 compression.

H.264 compressor


The image reproduction quality level. Best gives an output video with the maximum quality of reproduction resulting in the biggest file size. Least gives minimum quality of reproduction with the smallest file size. This is only available for the internal encoder.

Average Bit Rate

Enable this option to indicate the long-term desired average data rate (in kilobits per second). A higher value results in better image quality but bigger file size. Note that this is not a hard limit: the resulting data rate could be lower or higher depending on the video size and actual contents. If this option is disabled then the encoder does not set a limit, and the Quality setting, if enabled, should determine the file size.

MPEG4 compressor

H.265 compressor (only supported in Windows 7 and later versions)

H.265 is a new video compression standard. In comparision to H.264, H.265 offers about double the data compression ratio at the same level of video quality, or substantially improved video quality at the same bit rate.

Audio Compressor

MP4 files are saved using AAC compression for sound.

Audio Bitrate

You can specify a maximum variable bitrate the sound will be encoded at (the bitrate will not be constant). The higher the value the better the quality of sound.