Frequently Asked Questions

FAQ:

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What is MP4 format?

MP4 is short for Moving Picture Expert Group-4. First published in 1998, MPEG-4 or MP4 was designed to encompass all the features that were part of earlier releases of MPEG files, and add a few more that would prove helpful with the advancing online technology of the day. As a standardized group of video and perceptual coding formats, MP in general quickly became a hit with the average Internet user. The introduction of MP4 made it possible for the audience to continue growing by providing quicker, faster, and higher quality broadcast media for the average user.

Because MP4 was a reliable application that required a relatively low amount of bandwidth, just about everyone could take advantage of using the tool. This was especially true as technology made it possible to create more powerful desktop and laptop systems that had a larger hard drive and could command more power. The enhancement of the speed of various types of Internet connections also helped to make MP4 more accessible to a greater audience.

 

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What multimedia formats to use to create MP4 compliant files?

To create MP4 compliant files use audio/video formats covered by the MPEG-4 Standard:

Use MP4 compliant video formats: MPEG-4 (XviD, DivX5, 3ivx, ffmpeg/ffvfw, NeroDigital AVC, x264, H.264/AVC), MPEG-2, MPEG-1, ... Don't use MS MPEG-4, MPEG-4 DivX3, WM9 (Windows Media 9), RV9 (Real Video 9)...

Use MP4 compliant audio formats: MP3, AAC, MP2, MP1, CELP (speech), TwinVQ (very low bitrates), SAOL (midi), ALS (lossless) ... Don't use OGG Vorbis, Voxware Metasound, ...

Use MP4 compliant picture formats: JPEG, PNG

Use MP4 subtitle/text format: MPEG-4 Timed Text

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How can I get the best MP4 quality?

Please select H264 MP4 format from Format drop-down list on "custom mode". But please note that it will take you more time than to select other output formats. Additionally, it also makes difference when you raise video bitrates and audio bitrates.