What is MP4?
MP4 - An ISO/IEC
standard 14496 developed by the Moving Picture Experts Group (MPEG),
the committee that also developed MPEG-1 and MPEG-2. These standards
made interactive video on CD-ROM, DVD and Digital Television possible.
MP4 is the result of another international effort involving hundreds
of researchers and engineers from all over the world. MP4 was finalized
in October 1998 and became an International Standard in 1999. MP4
used for both streaming and downloadable web content, and is also
the video format employed by a growing number of portable video
recorders. One of the best-known MP4 encoders is DivX which since
version 5 has been fully standard-compliant MP4 encoder.
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.
Here are some file extensions used on files that contain
data in the *.mp4 format:
- .mp4: official extension, for MP4 audio, MP4 video and advanced
MP4 content (see above) files
- .m4a: for audio-only MP4 files; can safely be renamed to *.mp4,
though opinions differ on the wisdom of this.
- .m4p: FairPlay protected MP4 files
- .mp4v, .m4v: video-only MP4 files (sometimes also used for
raw mpeg-4 video streams not in the *.mp4 container format)
- .3gp, .3g2: used by 3G mobile phones MP4 files, may also store
content not specified directly in the *.mp4 specification (H.263,
AMR, TX3G)
MP4 Software
Review:
- MP4
Converter is DVD to MP4 converter and video to MP4
converter all-in-one software, very useful for converting video
AVI, MPEG, WMV, ASF, ASX to MP4 and convert DVD VOB files to
MP4 Video format for playing on your Apple video iPod player.
- WinAVI
3GP/MP4/PSP/iPod Video Converter is software for
MP4/3GP file conversion of portable video device such as iPod/PSP,
It can convert almost all video formats, for e.g., DivX, XviD,
MOV, rm, rmvb, MPEG, VOB, DVD, WMV, AVI to iPod/PSP or other
portable video device, MP4 player or smart phone.
- ImTOO
MPEG Encoder - powerful MP4 Mpeg Mpeg4 Converter
Encoder to convert almost all video formats, such as convert
AVI MP4 MPEG MPEG4 MPEG2 WMV 3GP MOV RM. MP4 Mpeg Mpeg4 Converter
is also a WMV converter which can convert WMV to Mpeg Mpeg4,
convert WMV to AVI.
- ImTOO
Audio Encoder - convert among MP3, WAV, WMA, MP4,
M4A, AAC, OGG, etc. The audio converter is also a MP4 M4A converter
which can convert MP4 to MP3, convert AAC to MP3, M4A to MP3.
- Cucusoft
Video DVD to iPod Converter Suite is an all-in-one
convert Video to iPod MP4, DVD to iPod MP4 tools. convert both
DVD and video file AVI Mpeg DivX etc. to iPod MP4
- Cucusoft
DVD to iPod Converter - convert DVD to iPod software
for Apple iPod Movie and iPod MP4 video. It can convert almost
all kinds of DVD to iPod Movie / iPod MP4 Video.
- Super
DVD to iPod Converter With Super DVD to iPod Converter,
you can convert almost all kinds of DVD to iPod video MP4 (Mpeg4).
- Imtoo
iPod Movie Converter is video and movie converter
for iPod! convert movie to iPod MP4, like AVI, MPEG, WMV, MOV,
MP4, RM, RMVB, DivX, ASF, VOB, 3GP and etc.
- iPod
Video Converter for Mac - Powerful function of iPod
Video Converter for Mac enable you converting all popular audio
and video files, such as AVI, MPEG, WMV, MOV, MP4, VOB, DivX,
XviD, AAC, AV3, MP3, to the formats supported by Video iPod
including MP4, M4A, MP3, MOV, etc.
- HDX4
MPEG4 3GP MP4 Player - play and open other container
formats like MP4 MPEG4 3GP video or audio OGG, AAC or AMR etc.
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