Sony Ericsson P1 manual Video formats, Dls, He Aac, Aac+, MPEG-4

White paper Sony Ericsson P1

DLS	The DLS file format is used to store both the digital sound data and articulation
	parameters needed to create one or more 'instruments.' An instrument contains
	'regions' which point to WAVE 'files' (samples) also embedded in the DLS file. Each
	region specifies a MIDI note and velocity range which will trigger the corresponding
	sound and also contains articulation information such as envelopes and loop points.
	Articulation information can be specified for each individual region or for the entire
	instrument.”
Real Audio 9	RealAudio is a proprietary encoding format from RealNetworks. It also supports
	repositioning during real-time playback.
eAAC+	eAAC+ is AAC+ with the addition of Parametric Stereo (PS). PS significantly increases
(eAAC+, AAC+	the codec efficiency for low bit rate stereo signals.
V2)
AAC+	‘High-efficiency AAC’ is the official MPEG name for the combination of AAC and
(HE AAC, AAC+)	Spectral Band Replication (SBR). SBR is a bandwidth extension technique enabling
	audio codecs to deliver the same quality at half the bit rate.

Video formats

Format		Description
MPEG-4 ISO File Format (.mp4), ISO/		File formats that are specified as a part of the ISO/IEC MPEG-
IEC 14496-14, including:		4 international standard. It is used to store media types
•	MPEG-4	defined by the ISO/IEC Moving Picture Experts Group, and
•	AAC-LC, AMR-NB (audio)	can be used to store other media types as well. It is, typically
		used to store data in files, though it will be used in data
		streams and possibly in other ways. The .mp4 allows
		multiplexing of multiple video and audio streams in one file,
		variable frame- and bit-rates, subtitles and still images. It also
		allows streaming over the Internet.
3GPP File Format (.3gp), 3GPP TS		File formats which are used in mobile phones to store media
26.234 V5.6.0, including:		(audio/video). This file format is a simpler version of "ISO
• MPEG-4, H.263, H.264 (video)		14496-1 Media Format”. This format can only carry video
•	AAC-LC, AMR-NB (audio)	encoded as MPEG-4, H.263, or H.264. Audio is stored in AAC-
		LC or AMR-NB formats.
RealMedia		A digital sound and video file format that is the registered
		trademark of RealNetworks. This format is typically used to
		stream media through the net.
Windows Media Video, WMV		A generic name for the set of video codec technologies
		developed by Microsoft. It is part of the Microsoft Windows
		Media framework.

31 May 2007