ASF is Advanced Streaming Format. It is an extensible file format developed primarily for storing synchronized digital video, audio, subtitle streams, or transmitting data on the internet. ASF is also a multimedia container of Windows Media Video or Windows Media Audio.

To convert mp4 to asf file, please install the appropriate mp4 decoder and audio decoder for the mp4 format such as FFDSHOW, DivX, XviD etc.

Download ASF Converter which can convert mp4 to asf file. Select a mp4  file, Change the output format to ASF in the Options dialog box, configure some parameters such as the video encoding bitrate, audio encoding bitrate, resolution, frame rate etc if necessary.

AVS is a coding method of a new generation developed by China with the independent intellectual property rights. Now China is working on the development of AVS specifications. AVS standards mainly includes 4 technical standards: system, video, audio and digital rights management. And AVS video mainly focuses on video compression applied to high definition television and high-density optical storage media.

H.264 is a kind of high-performance video codec technology developed by JVT (Joint Video Team) formed by both ITU-T and ISO. So it’s not only ITU-T’s H.264 but also ISO/IEC’s MPEG-4 AVC and which nearly becomes Part 10 of the MPEG-4 standard. H.264’s biggest advantage lies in high compression ratio which will greatly help users save download time and data traffic charges. H.264 compression ratio is twice higher than MPEG-2 while 1.5 ~ 2 times than MPEG-4 under the condition of the same image quality. Besides, H.264 also provides high-quality smooth image.

AVC is Advanced Video Coding.

To convert AVC to asf or H.264 to asf, please install FFDshow and  container splitter.