Hyper Shinchan
9th June 2006, 16:48
mpeg4 stream over mpeg2ts? DMB, T-DMB, DVB-H , eureka????
Is this somehow MP4 related?
I've a pair of suggestions for Bond, anyway:
1) there are a pair of corrigendum in the publicly avaible iso standards,
http://standards.iso.org/ittf/PubliclyAvailableStandards/c042292_ISO_IEC_14496-12_2005_Cor_1_2005(E).zip
http://standards.iso.org/ittf/PubliclyAvailableStandards/c043226_ISO_IEC_14496-12_2005_Cor_2_2006(E).zip
You could add them (I dunno if the text of the main file was updated with these corrections, it's dated 2005, I've to check it).
2)the following streams, not covered by MPEG-4, can be placed in MP4 already:
- Ogg Vorbis and Ogg Theora, via MP4Box
- Ogg Vorbis, via a patched mp4creator
- Apple's Lossless Audio (ALAC/ALE - not compliant with MPEG-4 ALS), via iTunes
- DVD picture subtitles (Vobsubs), via Nero Recode2
- AMR Speech Audio, via the NEC e808/e616 mobile phone
only the future will show if these private streams will be widely accepted and supported...
I'm not sure about the last lines, I've a friend that have a NEC, it outputs files with the .mp4 extension, but they are branded as 3gp4. They are MPEG4 video SP and AMR-NB. They look more like renamed .3gp, maybe NEC decided so to prevent compatibility problem with the mobile phone that don't support MPEG-4 video, but 3GPP specs says that a file with MPEG-4 video and AMR audio shall be branded as 3gp4 and it shall have the .3gp extension.
In the same table they says also that MPEG-4 video + AAC LC audio would be labeled as mp42 and it would have the .mp4 extension with the 3gp5 brand as a compatible one.
You can find the specs of the 3GPP file format here (http://www.3gpp.org/ftp/Specs/archive/26_series/26.244/26244-640.zip).
Is this somehow MP4 related?
I've a pair of suggestions for Bond, anyway:
1) there are a pair of corrigendum in the publicly avaible iso standards,
http://standards.iso.org/ittf/PubliclyAvailableStandards/c042292_ISO_IEC_14496-12_2005_Cor_1_2005(E).zip
http://standards.iso.org/ittf/PubliclyAvailableStandards/c043226_ISO_IEC_14496-12_2005_Cor_2_2006(E).zip
You could add them (I dunno if the text of the main file was updated with these corrections, it's dated 2005, I've to check it).
2)the following streams, not covered by MPEG-4, can be placed in MP4 already:
- Ogg Vorbis and Ogg Theora, via MP4Box
- Ogg Vorbis, via a patched mp4creator
- Apple's Lossless Audio (ALAC/ALE - not compliant with MPEG-4 ALS), via iTunes
- DVD picture subtitles (Vobsubs), via Nero Recode2
- AMR Speech Audio, via the NEC e808/e616 mobile phone
only the future will show if these private streams will be widely accepted and supported...
I'm not sure about the last lines, I've a friend that have a NEC, it outputs files with the .mp4 extension, but they are branded as 3gp4. They are MPEG4 video SP and AMR-NB. They look more like renamed .3gp, maybe NEC decided so to prevent compatibility problem with the mobile phone that don't support MPEG-4 video, but 3GPP specs says that a file with MPEG-4 video and AMR audio shall be branded as 3gp4 and it shall have the .3gp extension.
In the same table they says also that MPEG-4 video + AAC LC audio would be labeled as mp42 and it would have the .mp4 extension with the 3gp5 brand as a compatible one.
You can find the specs of the 3GPP file format here (http://www.3gpp.org/ftp/Specs/archive/26_series/26.244/26244-640.zip).