Accessing non-video streams in MPEGTS [SEC=UNCLASSIFIED]
Durrand, Paul (Contractor)
Paul.Durrand at dsto.defence.gov.au
Mon Jul 18 17:34:49 PDT 2011
Thanks for the response Edward.
We are using the SMPTE-336M
(http://store.smpte.org/product-p/st%200336-2007.htm) for KLV and then
using MISB 0601.4
(http://www.gwg.nga.mil/misb/docs/standards/Standard060104.pdf) and MISB
local data sets. This stream has timecoding to ensure the metadata is
associated with the appropriate frame.
I am doing the encoding and decoding myself, I just need access to the
raw data in the specific stream to read and write to.
gstreamer-devel-bounces+paul.durrand=dsto.defence.gov.au at lists.freedeskt
[mailto:gstreamer-devel-bounces+paul.durrand=dsto.defence.gov.au at lists.f
reedesktop.org] On Behalf Of Edward Hervey
Sent: Monday, 18 July 2011 5:44 PM
To: Discussion of the development of and with GStreamer
Subject: Re: Accessing non-video streams in MPEGTS [SEC=UNCLASSIFIED]
Unfortunately private streams aren't exposed in mpeg-ts demuxers.
If those private streams contain only metadata, you can 'just' push
them as tags on the other audio/video streams.
And you'd have to do the same thing for muxing (collect the tags and
create your private streams).
What metadata exactly do those contain ?
On Mon, 2011-07-18 at 13:23 +0930, Durrand, Paul (Contractor) wrote:
> I am working with GStreamer to read and write MPEG TS files ultimately
> in an application. I am able to play the video stream using the
> following command:
> gst-launch-0.10 -e filesrc location=cars.mpg ! mpegtsdemux !
> ffdec_mpeg2video ! xvimagesink What I am now trying to
> understand is how to read and write to non audio/video streams. I have
> a stream in the MPEGTS which contains KLV metadata. I have code which
> will decode and encode the information but I am unsure how to select
> the specific stream which contains the data with GStreamer.
> Can anyone provide some guidance?
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