RealMedia - Revision history

Suxen drol: add .RMP chuck type description

2023-10-18T08:20:40Z

add .RMP chuck type description

← Older revision		Revision as of 01:20, 18 October 2023
Line 1:		Line 1:
	* Extensions: rm, ra, rmvb		* Extensions: rm, ra, rmvb, rmhd
	* Company: [[Real]]		* Company: [[Real]]
	* Specifications: https://common.helixcommunity.org/2003/HCS_SDK_r5/htmfiles/rmff.htm		* Specifications: https://common.helixcommunity.org/2003/HCS_SDK_r5/htmfiles/rmff.htm
Line 5:		Line 5:
	Multimedia container format developed by [[Real]] and used almost exclusively for codecs developed by [[Real]].		Multimedia container format developed by [[Real]] and used almost exclusively for codecs developed by [[Real]].

	The old .ra files are just for audio. The newer RealMedia (.rm) files are for audio and video.		The old .ra files are just for audio. The newer RealMedia (.rm) and RealMedia HD (.rmhd) files are for audio and video.

	== RA Format ==		== RA Format ==
Line 101:		Line 101:
	Real chunk types:		Real chunk types:
	* .RMF: RealMedia file header (only one per file, must be the first chunk)		* .RMF: RealMedia file header (only one per file, must be the first chunk)
			* .RMP: RealMedia HD file header (only one per file, must be the first chunk)
	* PROP: File properties (only one per file)		* PROP: File properties (only one per file)
	* MDPR: Stream properties (one for each stream)		* MDPR: Stream properties (one for each stream)
Line 108:		Line 109:


	=== RealMedia file header (.RMF) ===		=== RealMedia file header (.RMF or .RMP) ===

	This must be the first chunk in a RealMedia file. Only one .RMF can be present in a file. The only useful information carried by .RMF is the number of headers.		This must be the first chunk in a RealMedia file. Only one .RMF can be present in a file. The only useful information carried by .RMF is the number of headers.
Line 121:		Line 122:

	Notes:		Notes:
	* All known sample files have version equal to 0.		* All known sample files have version equal to 0, or equal to 2 in case of rmhd.
	* There is a sample with chunk size = 0x10, in that case file version is a word. Note that the sample has chunk version = 0 like all other files.		* There is a sample with chunk size = 0x10, in that case file version is a word. Note that the sample has chunk version = 0 like all other files.

Suxen drol: +rv60 fourcc

2023-10-18T08:14:48Z

+rv60 fourcc

← Older revision		Revision as of 01:14, 18 October 2023
Line 369:		Line 369:
	* [[RealVideo 3\|RV30]] - H.264 precursor		* [[RealVideo 3\|RV30]] - H.264 precursor
	* [[RealVideo 4\|RV40]] - H.264 precursor		* [[RealVideo 4\|RV40]] - H.264 precursor
			* [[RealVideo 6\|RV60]] - HEVC derivative
	* [[BeHere_iVideo\|RVTR]] - H.263+ (RV20)		* [[BeHere_iVideo\|RVTR]] - H.263+ (RV20)
	* [[BeHere_iVideo\|RVT2]] - RV30 ? (from helix spec hxmtypes.h)		* [[BeHere_iVideo\|RVT2]] - RV30 ? (from helix spec hxmtypes.h)

	[[Category: Container Formats]]		[[Category: Container Formats]]

Maxpol: RealAudio atrc ==> ATRAC3

2018-11-29T13:36:32Z

RealAudio atrc ==> ATRAC3

← Older revision		Revision as of 06:36, 29 November 2018
Line 356:		Line 356:
	* [[RealAudio_sipr\|sipr]] - Sipro		* [[RealAudio_sipr\|sipr]] - Sipro
	* [[RealAudio_cook\|cook]] - Cook		* [[RealAudio_cook\|cook]] - Cook
	* [[RealAudio_atrc\|atrc]] - ~~ATRAC~~		* [[RealAudio_atrc\|atrc]] - ATRAC3
	* [[Real Lossless Codec\|ralf]] - RealAudio Lossless Format		* [[Real Lossless Codec\|ralf]] - RealAudio Lossless Format
	* [[RealAudio_raac\|raac]] - LC-AAC		* [[RealAudio_raac\|raac]] - LC-AAC

Compn: /* Video */

2013-09-25T12:16:42Z

Video

← Older revision		Revision as of 05:16, 25 September 2013
Line 363:		Line 363:
	===== Video =====		===== Video =====

			* [[ClearVideo\|CLV1]] - ClearVideo (from helix spec)
	* [[RealVideo\|RV10]] - H.263		* [[RealVideo\|RV10]] - H.263
	* [[RealVideo\|RV13]] - H.263		* [[RealVideo\|RV13]] - H.263
Line 369:		Line 370:
	* [[RealVideo 4\|RV40]] - H.264 precursor		* [[RealVideo 4\|RV40]] - H.264 precursor
	* [[BeHere_iVideo\|RVTR]] - H.263+ (RV20)		* [[BeHere_iVideo\|RVTR]] - H.263+ (RV20)
			* [[BeHere_iVideo\|RVT2]] - RV30 ? (from helix spec hxmtypes.h)

	[[Category: Container Formats]]		[[Category: Container Formats]]

Compn: /* Video */

2013-09-25T11:53:14Z

Video

← Older revision		Revision as of 04:53, 25 September 2013
Line 368:		Line 368:
	* [[RealVideo 3\|RV30]] - H.264 precursor		* [[RealVideo 3\|RV30]] - H.264 precursor
	* [[RealVideo 4\|RV40]] - H.264 precursor		* [[RealVideo 4\|RV40]] - H.264 precursor
			* [[BeHere_iVideo\|RVTR]] - H.263+ (RV20)

	[[Category: Container Formats]]		[[Category: Container Formats]]

Kostya: Fix link to the spec

2009-02-16T16:04:14Z

Fix link to the spec

← Older revision		Revision as of 09:04, 16 February 2009
Line 1:		Line 1:
	* Extensions: rm, ra, rmvb		* Extensions: rm, ra, rmvb
	* Company: [[Real]]		* Company: [[Real]]
	* Specifications: https://common.helixcommunity.org~~/nonav~~/2003/HCS_SDK_r5/htmfiles/rmff.htm		* Specifications: https://common.helixcommunity.org/2003/HCS_SDK_r5/htmfiles/rmff.htm

	Multimedia container format developed by [[Real]] and used almost exclusively for codecs developed by [[Real]].		Multimedia container format developed by [[Real]] and used almost exclusively for codecs developed by [[Real]].

Multimedia Mike: /* Video */ note RV30 and RV40 as being H.264 precursors

2008-03-20T16:26:26Z

Video: note RV30 and RV40 as being H.264 precursors

← Older revision		Revision as of 09:26, 20 March 2008
Line 366:		Line 366:
	* [[RealVideo\|RV13]] - H.263		* [[RealVideo\|RV13]] - H.263
	* [[RealVideo G2\|RV20]] - H.263+		* [[RealVideo G2\|RV20]] - H.263+
	* [[RealVideo 3\|RV30]] - ~~Unknown format~~		* [[RealVideo 3\|RV30]] - H.264 precursor
	* [[RealVideo 4\|RV40]] - ~~Unknown format~~		* [[RealVideo 4\|RV40]] - H.264 precursor

	[[Category: Container Formats]]		[[Category: Container Formats]]

Roberto: audio/x-ralf-mpeg4 mimetype

2006-12-25T22:10:49Z

audio/x-ralf-mpeg4 mimetype

← Older revision		Revision as of 15:10, 25 December 2006
Line 249:		Line 249:

	The MP3 frames are stored in ADU format (see RFC 3119 for details) with no interleaving (at least this is true in the only known sample).		The MP3 frames are stored in ADU format (see RFC 3119 for details) with no interleaving (at least this is true in the only known sample).

			===== audio/x-ralf-mpeg4 =====
			This is used to store [[Real Lossless Codec\|ralf]] lossless audio. This is the only known RealAudio codec that does not use the x-pn-realaudio mimetype.

			The format of this type-specific data is not known.

	=== Content description header (CONT) ===		=== Content description header (CONT) ===

Roberto: audio/X-MP3-draft-00 mimetype

2006-12-25T21:51:40Z

audio/X-MP3-draft-00 mimetype

← Older revision		Revision as of 14:51, 25 December 2006
Line 242:		Line 242:
	byte[] Codec extradata		byte[] Codec extradata
	#endif		#endif


			===== audio/X-MP3-draft-00 =====
			This is used to store MP3 audio in rm container.
			When this mimetype is used the type-specific part of the MDPR header is not used, and its length is set to 0.

			The MP3 frames are stored in ADU format (see RFC 3119 for details) with no interleaving (at least this is true in the only known sample).

	=== Content description header (CONT) ===		=== Content description header (CONT) ===

Roberto: audio/x-pn-realaudio and audio/x-pn-multirate-realaudio mimetypes

2006-12-25T21:26:10Z

audio/x-pn-realaudio and audio/x-pn-multirate-realaudio mimetypes

← Older revision		Revision as of 14:26, 25 December 2006
Line 180:		Line 180:
	byte[] Type specific data, meaning and format depends on mime type		byte[] Type specific data, meaning and format depends on mime type


			==== Audio (audio/) ====

			===== audio/x-pn-realaudio and audio/x-pn-multirate-realaudio =====
			These mimetypes are used to specify streams with RealAudio codecs. There are 3 known versions of this datablock: ra3, ra4, ra5. ra3 is used only with the old 14_4 codec, ra4 and ra5 can be used with all the other codecs.

			The audio block has this format

			byte[4] Header signature ('.', 'r', 'a', 0xfd)
			word Version (3, 4 or 5)
			#if version == 3
			word Header size, not including first 8 bytes
			byte[10] Unknown
			dword Data size
			byte Title string length
			byte[] Title string
			byte Author string length
			byte[] Author string
			byte Copyright string length
			byte[] Copyright string
			byte Comment string length
			byte[] Comment string
			byte Unknown *
			byte Fourcc string length (always 4) *
			byte[] Fourcc string (always "lpcJ") *
			#elseif version == 4 or version == 5
			word Unused (always 0)
			byte[4] ra signature (".ra4" or ".ra5", depending on version)
			dword Unknown (maybe data size)
			word Version2 (always equal to version)
			dword Header size
			word Codec flavor
			dword Coded frame size
			byte[12] Unknown
			word Sub packet h
			word Frame size
			word Subpacket size
			word Unknown
			#if version == 5
			byte[6] Unknown
			#endif
			word Samplerate
			word Unknown
			word Sample size
			word Channels
			#if version == 4
			byte Interleaver ID string length (always 4)
			byte[] Interleaver ID string
			byte [[FourCC]] string length (always 4)
			byte[] [[FourCC]] string
			#endif
			#if version == 5
			dword Interleaver ID
			dword [[FourCC]]
			#endif
			byte[3] Unknown
			#if version == 5
			byte Unknown
			#endif
			dword Codec extradata length
			byte[] Codec extradata
			#endif

	=== Content description header (CONT) ===		=== Content description header (CONT) ===

← Older revision		Revision as of 01:14, 18 October 2023
Line 369:		Line 369:
	* [[RealVideo 3\|RV30]] - H.264 precursor		* [[RealVideo 3\|RV30]] - H.264 precursor
	* [[RealVideo 4\|RV40]] - H.264 precursor		* [[RealVideo 4\|RV40]] - H.264 precursor
			* [[RealVideo 6\|RV60]] - HEVC derivative
	* [[BeHere_iVideo\|RVTR]] - H.263+ (RV20)		* [[BeHere_iVideo\|RVTR]] - H.263+ (RV20)
	* [[BeHere_iVideo\|RVT2]] - RV30 ? (from helix spec hxmtypes.h)		* [[BeHere_iVideo\|RVT2]] - RV30 ? (from helix spec hxmtypes.h)

	[[Category: Container Formats]]		[[Category: Container Formats]]

← Older revision		Revision as of 06:36, 29 November 2018
Line 356:		Line 356:
	* [[RealAudio_sipr\|sipr]] - Sipro		* [[RealAudio_sipr\|sipr]] - Sipro
	* [[RealAudio_cook\|cook]] - Cook		* [[RealAudio_cook\|cook]] - Cook
	* [[RealAudio_atrc\|atrc]] - ~~ATRAC~~		* [[RealAudio_atrc\|atrc]] - ATRAC3
	* [[Real Lossless Codec\|ralf]] - RealAudio Lossless Format		* [[Real Lossless Codec\|ralf]] - RealAudio Lossless Format
	* [[RealAudio_raac\|raac]] - LC-AAC		* [[RealAudio_raac\|raac]] - LC-AAC

← Older revision		Revision as of 09:26, 20 March 2008
Line 366:		Line 366:
	* [[RealVideo\|RV13]] - H.263		* [[RealVideo\|RV13]] - H.263
	* [[RealVideo G2\|RV20]] - H.263+		* [[RealVideo G2\|RV20]] - H.263+
	* [[RealVideo 3\|RV30]] - ~~Unknown format~~		* [[RealVideo 3\|RV30]] - H.264 precursor
	* [[RealVideo 4\|RV40]] - ~~Unknown format~~		* [[RealVideo 4\|RV40]] - H.264 precursor

	[[Category: Container Formats]]		[[Category: Container Formats]]