RealMedia Variable Bitrate (RMVB) is a variable bitrate extension of the RealMedia multimedia container format developed by RealNetworks. As opposed to the more common RealMedia container, which holds streaming media encoded at a constant bit rate, RMVB is typically used for multimedia content stored locally. Files using this format have the file extension ".rmvb". RealMedia uses compression similar to MPEG-4 Part 10 codecs, such as x264. RMVB files are extremely popular for distributing Asian content, especially Chinese television episodes and movies. For this reason, they have become noticeably present (though not entirely popular) on file sharing platforms such as BitTorrent, eDonkey and Gnutella.[citation needed] Limited support is available on some media players, generally on the Windows platform, including the proprietary RealPlayer 10 and the open-sourced Media Player Classic, using an appropriate DirectShow filter or Real Alternative. MPlayer and some other programs such as totem are able to play RMVB files in Linux/UNIX-based x86 machines through the use of WIN32 DLLs or native closed-source libraries. RM
File Type
Popularity Category
RealVideo Variable Bit Rate File
Average Video Files Real Media video file compressed using a variable bit rate, which is optimized for the content of the video; a newer variation of the standard Real Media (.RM) file format that allows for more efficient compression. RMVB files have become a popular format for Anime and Asian movie titles because they have smaller file sizes and lower bitrates with better quality compared to DivX.
File Description
Mac OS Program(s ) that open rmvb files
RealNetworks RealPlayer
Windo ws
RealNetworks RealPlayer
Linux
RealNetworks RealPlayer
What is an RMVB file and what do I do with it? I downloaded what I thought was a video, but my computer says it doesn't recognize RMVB as a valid file format. RMVB is a RealMedia Variable Bitrate file. This is one of the newer formats from Real for publishing video files, which is quickly becoming a popular format for Anime and Asian movie titles because of smaller file sizes and lower bitrates with exceptional quality compared to DivX, which has long been the standard for trading videos online. There are two options for playing back the file. Downloading RealPlayer is the easiest way to play RMVB files. Real will encourage you to upgrade to their SuperPass product, but you aren't required to. The second option is to use Real Alternative which plays back RealMedia files outside of RealPlayer. Video Ninja Tip: If you want something that will play RMVB files and burn them to DVD, sign up for a free SuperPass trial. After installing either of these apps, you still need to associate the RMVB file type with the player because it isn't recognized by default. Right-click the file and choose Open from the right-click menu. Choose Select the program from a list and click OK. Choose RealPlayer or Real Alternative and leave the box checked next to Always use the selected program to open this kind of file.
When you click on any RMVB file, it should automatically launch RealPlayer to playback the file.
3GP (3GPP file format) is a multimedia container format defined by the Third Generation Partnership Project (3GPP) for 3G UMTS multimedia services. It is used on 3G mobile phones but can also be played on some 2G and 4G phones. 3G2 (3GPP2 file format) is a multimedia container format defined by the 3GPP2 for 3G CDMA2000 multimedia services. It is very similar to 3GP file format, but has some extensions and limitations in comparison to 3GP. 3GP is defined in ETSI 3GPP technical specification. 3GP is required file format for video and associated speech/audio media types and timed text in ETSI 3GPP technical specifications for IP Multimedia Subsystem (IMS), Multimedia Messaging Service (MMS) and Transparent end-to-end Packet-switched Streaming Service (PSS). 3G2 is defined in 3GPP2 technical specification. The 3GP and 3G2 file formats are both structurally based on the ISO base media file format defined in ISO/IEC 14496-12 - MPEG-4 Part 12, but older versions of the 3GP file format did not use some of its features. 3GP and 3G2 are container formats similar to MPEG-4 Part 14 (MP4), which is also based on MPEG-4 Part 12. The 3GP and 3G2 file format were designed to decrease
storage and bandwidth requirements in order to accommodate mobile phones. 3GP and 3G2 are similar standards, but with some differences:
3GPP file format was designed for GSM-based Phones and may have the filename extension .3gp 3GPP2 file format was designed for CDMA-based Phones and may have the filename extension .3g2 The 3GP file format stores video streams as MPEG-4 Part 2 or H.263 or MPEG-4 Part 10 (AVC/H.264), and audio streams as AMR-NB, AMR-WB, AMR-WB+, AAC-LC, HE-AAC v1 or Enhanced aacPlus (HE-AAC v2). 3GPP allowed use of AMR and H.263 codecs in the ISO base media file format (MPEG-4 Part 12), because 3GPP specified the usage of the Sample Entry and template fields in the ISO base media file format as well as defining new boxes to which codecs refer. These extensions was registered by the registration authority for code-points in ISO base media file format ("MP4 Family" files).[9] [10] For the storage of MPEG-4 media specific information in 3GP files, the 3GP specification refers to MP4 and the AVC file format, which are also based on the ISO base media file format. The MP4 and the AVC file format specifications described usage of MPEG-4 content in the ISO base media file format.[7] The 3G2 file format can store the same video streams and most of audio streams used in the 3GP file format. In addition, 3G2 stores audio streams as EVRC, EVRC-B, EVRC-WB, 13K (QCELP), SMV or VMR-WB, which was specified by 3GPP2 for use in ISO base media file format.[10] The 3G2 specification also defined some enhancements to 3GPP Timed Text. 3G2 file format does not store Enhanced aacPlus (HE-AAC v2) and AMR-WB+ audio streams.[6] For the storage of MPEG-4 media (MPEG-4 Part 2, MPEG-4 Part 3 - AAC, MPEG-4 Part 10 - H.264/AVC) in 3G2 files, the 3G2 specification refers to the MP4 file format and the AVC file format specification, which described usage of this content in the ISO base media file format. For the storage of H.263 and AMR content 3G2 specification refers to the 3GP file format specification.[11] Some cell phones use the .mp4 extension for 3GP video. A 3GP file is always big-endian, storing and transferring the most significant bytes first. It also contains descriptions of image sizes and bitrate.
3GP
Category File Description Video Files Audio and video container format developed by the 3rd Generation Partnership Project (3GPP); designed as a multimedia format for
transmitting audio and video files between 3G cell phones and over the Internet; commonly used by mobile phones that support video capture.
Apple QuickTime Player Roxio Toast 10 Titanium
Mac OS
RealNetworks RealPlayer VideoLAN VLC media player MPlayer
Program(s ) that open 3gp files
Apple QuickTime Player Roxio Creator 2010
Windo ws
RealNetworks RealPlayer VideoLAN VLC media player MPlayer MIKSOFT Mobile 3GP Converter
Linux
VideoLAN VLC media player MPlayer
3gp A container format that is a simplified version of the MPEG-4 (MP4) format that uses less storage and bandwidth for better streaming on mobile phones.
RM to 3GP: Convert Video from RM(RealMedia) to 3GP(3GP Mobile Video) with River Past Video Cleaner, RM23GP converter, conversion
What is RM?
A streaming technology developed by RealNetworks for transmitting live video over the Internet. RealVideo uses a variety of data compression techniques and works with both normal IP connections as well as IP Multicast connections. More information is available on RealNetwork web site. To convert RealMedia to other formats with River Past software, please have Real Alternative installed. If the RM file was encoded with AC-3 audio, you may also need to install AC-3 Decoder Filter.
What is 3GP?
The 3rd Generation Partnership Project (3G/3GPP) is a collaboration agreement that was established in December 1998. The 3GPP and 3GPP2 specifications call out specific types of media that can exist in .3gp and .3g2 files. Once you move a video from cell phone to your PC, the easiest way to play it is to use Apple's QuickTime Player. In general, if a cell phone record a 3g2 video, it should conform to the 3G2 standard. However, a cell phone may not has the ability to play all variety of 3G2 videos due to limited codec support on the cell. Thus, it is easy to convert a cell phone 3G2 to a video format playable on a computer, but it is not so easy to convert a PC video to a 3G2 which is compatible with your particular brand of cell phone. To encode 3GP video in River Past software, you will need River Past 3GP Booster Pack, and need to have Apple QuickTime installed.
Additional Requirements
To convert from RM(RealMedia) to 3GP(3GP Mobile Video) video with River Past Video Cleaner,you must haveRiver Past 3GP Booster Pack installed.
Launch River Past Video Cleaner
Once River Past Video Cleaner is installed properly, launch Video Cleaner.
Add File
Click on the "Add" button on the tool bar. The standard file open dialog appears. Select "RM - ReadlMedia" in its "Files of type" combo box.
Select the file you want to convert and click "Open". The file will be added to the conversion file list.
Note: To convert from RM files, you must have Real Alternative installed.
River Past Video Cleaner
Select output format
Use the setting panel on the bottom of the window to control the output format. Click on the toggle to the left of the "Output Format" label to expand the panel. Select "3GPP - GSM Mobile Phone Video".
Troubleshoot
If you have the 3GP Booster Pack installed, and don't see the 3GPP output option, you have a problem with your QuickTime installation. You need to have the latest QuickTime installed. Occasionally, QuickTime may be corrupted. In any case, reinstall QuickTime should fix this problem.
Note: To convert to 3GP/3GPP video files, you must have Apple QuickTime installed. Note: The 3GP Booster Pack must be installed for the "3GP" output option to show.
Change Video Settings
Click on the toggle to the left of the "Video Settings" label to expand the panel.
Select "Specify" under "Size" and/or "Frame rate" to enter the video resolution and/or frame rate.
You can change the compressor, quality, size, and frame rate of the video. The bitrate is in the unit of kbit/second. Use this formula to calculate the video size per minute: Video size/minute (KByte/second) = bitrate / 8 * 60.
Change Audio Settings
Click on the toggle to the left of the "Audio Settings" label to expand the panel.
Select the audio compressor for the conversion. Depending on the compressor, you may also change the sample rate, channel (stereo or mono), bits/sample, and bitrate.
Select output directory
Expand the "Output Directory" panel. Use the "Browse" button to select an output directory.
Convert
Click the "Convert" button on the tool bar.