[foms] MPEG TS streams and patents

[Jeroen Wijering]

It's definitely not efficient. Also b/c of the 188-byte packages.

When unpacking Apple HTTP Live streams (especially the lower bitrate ones), a large amount of data is used for the packet headers, adaptation fields and retransmitting of the PAT/PMT and SPS/PPS (as in double digit percentages). 

- Jeroen




On Dec 14, 2010, at 5:01 AM, James Courtier-Dutton wrote:

> On 13/12/10 13:21, Jeroen Wijering wrote:
>> Hello all,
>> 
>> Just to be sure, a transport stream is also a patent encumbered format, correct? So packing up VP8 / Vorbis into TS fragments for adaptive streaming would not be an open solution? It looks like transport streams are part of either the MPEG2 or MPEG2 Systems pool from MPEG-LA. See the PTS/DTS/PAT/PMT references: 
>> 
>> http://www.mpegla.com/main/programs/m2/Documents/m2CrossRefChart.pdf
>> http://www.mpegla.com/main/programs/m2s/Documents/m2sCrossRefChart.pdf 
>> 
>> Thinking forward, would this mean MPEG DASH is also a no-go as an adaptive streaming standard? It seems to rely heavily on TS / MP4 / AVC. In turn, DASH might also be folded into one of the MPEG LA pools. Does anybody know more about this?
>> 
>> Kind regards,
>> 
>> Jeroen
> 
> As most adaptive streaming application will be over TCP/IP, I would
> recommend against using MPEG TS.
> MPEG TS is not very space efficient when transported over TCP/IP.
> 
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