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Owen06
MP4 streaming FAQ
on Nov 13, 2006 at 8:29:22 am

What is MP4?
MP4 is a container format. As any other container format like AVI (.avi), RealMedia (.rm, .rmvb), QuickTime (.mov), MPEG (.mpg, .mpeg), Matroska (.mkv, .mka), OGM (.ogm) it allows you to combine different multimedia streams (mostly audio and video) into one single file.
MP4 is a file extension for the container format defined in the Systems Part of the MPEG-4 standard (ISO 14496-1).
MP4 supports all kinds of multimedia content (multiple audio streams, video streams, subtitle streams, pictures) and advanced content (called "Rich Media" or "BIFS"Wink like 2D and 3D graphics, user interactivity, DVD-like menus.
MP4 is a streamable format.
MP4 file extensions
MP4 files can have the following extensions:
.mp4 - official extension
.m4v - .mp4 files with the WRONG extension introduced by Apple for video+audio files, .m4v can be safely renamed to .mp4 (.m4v is used in Apple iTunes and iPod)
.m4a - .mp4 files with the WRONG extension introduced by Apple for audio-only files, .m4a can safely be renamed to .mp4
.m4p - used by Apple iTunes for DRM protected files
.m4e - renamed .sdp files used by Envivio for streaming
.m4v, .mp4v, .cmp, .divx, .xvid, .264 - normally raw mpeg-4 video streams (not inside MP4)
.3gp, .3g2 - used by mobile phones, can also include content not defined for .mp4 (H.263, AMR)
How to play streamed MP4 files (MP4 broadcasts)?
Apple QuickTime Player - supports MPEG-4 SP, AVC and AAC
Realnetworks RealPlayer 10 - supports MPEG-4 SP + B-frames (only in the "plus" version) and AAC
MPlayer - free (opensource) player, supports MPEG-4 ASP and AVC, available for various OSes, like Win, Linux, Mac OS..
Videolan - free (opensource) player, supports MPEG-4 ASP and AVC, various OSes supported
MPEG4IP WMP4Player - opensource (LGPL/MPL), supports MPEG-4 ASP and AVC
Dicas Mpegable - supports RTP streaming, AAC, MPEG-4 ASP, AMR (.3gp audio) decoding
EnvivioTV Plug-in - supports advanced content/BIFS (sample), AAC, MPEG-4 ASP and AVC in MP4
GPAC Osmo4 - opensource (GPL), able to decode BIFS (subtitles, user interactivity, dvd-like menus...) and TTXT
The last two support streamed advanced content/user interactivity.
Also you can play streamed MP4 without the need to install a accessional player (if your original player cannot support MP4) !with a DVD Creator,here I’d like to recommend the programm I use,xilisoft DVD Creator(there is a free way to download it,you can find it with google search if need),it provides a simple, fast way to convert almost all the popular video formats and burn DVD movie which is playable on home DVD player.
How to stream MP4 files?
Apple and MPEG4IP offer nice and free tools when it comes to streaming MP4: As a streaming server you can use Apple's Darwin Streaming Server. For live streaming you can use mp4live from MPEG4IP (only for Linux), on Windows you can use MPEGRecorder (which seems to be a port of mp4live). Also have a look at the tools from ViTooKi (opensource Streaming Server, Player and other tools). Another free and opensource MP4 streaming server is available from Catra. For MAC you may use Live Channel.
MPEG4IP mp4live (Linux)
Darwin Streaming Server by Apple
MPEGRecorder (Windows)
ViTooKi
Catra
Live Channel
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
More information,can check the web http://www.mp4converter.net.


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badboy
Re: MP4 streaming FAQ
on Nov 14, 2006 at 7:18:38 am

Very Happy A very good introduce about mp4,and I learn more from this.I found a mp4 converter is WinAVI [url=http://www.winavi.com/avi-to-mp4.htm]MP4 Video Converter.It can support almost all video formats under Windows,maybe helpful for someone.


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