Frequently Asked Questions

1.What is MP4?

MP4 is a new container format, a container format allows you to combine different multimedia streams into one single file. Multimedia containers are for example the well known AVI, MPEG , Matroska, OGM. MP4 is the global file extension for the official container format defined in the MPEG-4 standard. MP4 is streamable and supports all kinds of multimedia content, multiple audio-, video-, subtitlestreams, pictures, variable-framerates, -bitrates, -samplerates...) and advanced content like 2D and 3D animated graphics, user interactivity, DVD-like menus. MP4 is a streamable format

2. 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, 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, TwinVQ, ... Don't use OGG Vorbis, Voxware Metasound, ...

Use MP4 compliant picture formats: JPEG, PNG

3. If i have any problems in using MP4-Converter.com, what can i do ?

If you have any problems, questions, suggestions, or good ideas in using MP4-Converter.com, just send email to us: sales@mp4-converter.com. We will try our best to reply your questions.

4. Here are some file extensions used on files that contain data in the *.mp4 format:

• mp4: official extension, for audio, video and advanced content (see above) files
• .m4a: for audio-only files; can safely be renamed to *.mp4, though opinions differ on the wisdom of this.
• .m4p: FairPlay protected files
• .mp4v, .m4v: video-only (sometimes also used for raw mpeg-4 video streams not in the *.mp4 container format)
• .3gp, .3g2: used by 3G mobile phones, may also store content not specified directly in the *.mp4 specification (H.263, AMR, TX3G).

5. Is technical support free ?

Yes, the technical support is completely free. we will try our best to reply all the messages within 24 hours.