This might be good news! "Packetized Elementary Stream" on the PDF?? at DVinfo.net

Christopher C. Murphy · September 12th, 2004, 04:50 PM

Hey HDV'ers,

On this FX-1 HDV information PDF file it says the difference between the "Stream Type" is:

1080i is ""Packetized Elementary Stream"

720p is "Transport Stream"

So, this tells me the TS issue is being addressed in the Sony camera? Who knows what "Packetized Elementary" means? I learned a little about this with the JVC issues. I believe the "Transport" type is harder to edit because of the de-Muxing issue. The "Elementary" type is possibly threaded together audio and video - similar to a "mov" file has audio and video interwoven.

Look at the chart on this PDF file:
http://www.mitcorp.co.uk/images/HDV_Information.pdf

Anyway, maybe Lumiere or anyone knowledgable can check this out. I haven't seen this mentioned anywhere, so maybe this is good news for editors wondering what format this Sony will be dumping out!

Murph

Rob Lohman · September 14th, 2004, 05:58 AM

An elementary stream contains JUST audio OR video. Not both
(as a transport/program stream does). I'm not sure why the
packetized is there since basically all stuff is in packets.

I find it strange they would advert it as elementary. That's really
not possible (if you want both signals) unless they have two
seperate streams (one for video and one for audio). But I'm not
sure what the benefit of this would be.

De-muxing shouldn't be that hard to do.

Christopher C. Murphy · September 15th, 2004, 11:44 AM

Maybe they have the encoder setup to "demux" somehow on the camera?

If the limitation has been audio/video sync problems, and other TS issues...maybe they are trying something new? Anyone out there know what's going on?? Elementary my Dear techies!

Murph

Christopher C. Murphy · September 27th, 2004, 04:43 PM

Hey, almost no one has commented on the "Packetized Elementary Stream" coming out of the FX1. Doesn't anyone want to discuss this? I'm curious if it allow for better timecode or something additional to help in editing?

If you have any knowledge please pass it on! Rob mentioned that it contains just audio or video...not both. What the heck does that mean?

Thanks!

Murph

Phil Wright · September 27th, 2004, 07:48 PM

"Hey, almost no one has commented on the "Packetized Elementary Stream" coming out of the FX1. Doesn't anyone want to discuss this?"

Probably because in the end the difference is meaningless.

How you edit will still be determined by the software you use. Once everyone has their updates out with support for the Sony camera the end-user experience will be no different than that with the JVC camera. (Beyond the obvious ones of higher resolution and interlaced vs progressive.)

Rob Lohman · September 28th, 2004, 01:34 AM

Now murph it makes perfect sense <g>

An elementary stream can only have one thing. That's why it is
called elementary. It's like an audio file only has audio. Normal
DVD MPEG2 is in a transport/program stream and contains at
least two elementary streams within. One for video and one for
audio.

DVD's also have elementary streams for subtitling and some
other stuff.

As said above, it sounds like they have two seperate element
streams (like a video and audio track on a tape) instead of one
combined stream.

Christopher C. Murphy · September 28th, 2004, 05:17 AM

Ok, I get it now...thanks for the clear up!

Murph

September 12th, 2004, 04:50 PM	#1
Christopher C. Murphy Trustee Join Date: Sep 2003 Location: Boston, MA Posts: 1,707	This might be good news! "Packetized Elementary Stream" on the PDF?? Hey HDV'ers, On this FX-1 HDV information PDF file it says the difference between the "Stream Type" is: 1080i is ""Packetized Elementary Stream" 720p is "Transport Stream" So, this tells me the TS issue is being addressed in the Sony camera? Who knows what "Packetized Elementary" means? I learned a little about this with the JVC issues. I believe the "Transport" type is harder to edit because of the de-Muxing issue. The "Elementary" type is possibly threaded together audio and video - similar to a "mov" file has audio and video interwoven. Look at the chart on this PDF file: http://www.mitcorp.co.uk/images/HDV_Information.pdf Anyway, maybe Lumiere or anyone knowledgable can check this out. I haven't seen this mentioned anywhere, so maybe this is good news for editors wondering what format this Sony will be dumping out! Murph __________________ Christopher C. Murphy Director, Producer, Writer

September 14th, 2004, 05:58 AM	#2
Rob Lohman RED Code Chef Join Date: Oct 2001 Location: Holland Posts: 12,514	An elementary stream contains JUST audio OR video. Not both (as a transport/program stream does). I'm not sure why the packetized is there since basically all stuff is in packets. I find it strange they would advert it as elementary. That's really not possible (if you want both signals) unless they have two seperate streams (one for video and one for audio). But I'm not sure what the benefit of this would be. De-muxing shouldn't be that hard to do. __________________ Rob Lohman, visuar@iname.com DV Info Wrangler & RED Code Chef Join the DV Challenge \| Lady X Search DVinfo.net for quick answers \| Buy from the best: DVinfo.net sponsors

September 15th, 2004, 11:44 AM	#3
Christopher C. Murphy Trustee Join Date: Sep 2003 Location: Boston, MA Posts: 1,707	Maybe they have the encoder setup to "demux" somehow on the camera? If the limitation has been audio/video sync problems, and other TS issues...maybe they are trying something new? Anyone out there know what's going on?? Elementary my Dear techies! Murph __________________ Christopher C. Murphy Director, Producer, Writer

September 27th, 2004, 04:43 PM	#4
Christopher C. Murphy Trustee Join Date: Sep 2003 Location: Boston, MA Posts: 1,707	Hey, almost no one has commented on the "Packetized Elementary Stream" coming out of the FX1. Doesn't anyone want to discuss this? I'm curious if it allow for better timecode or something additional to help in editing? If you have any knowledge please pass it on! Rob mentioned that it contains just audio or video...not both. What the heck does that mean? Thanks! Murph __________________ Christopher C. Murphy Director, Producer, Writer

September 28th, 2004, 01:34 AM	#6
Rob Lohman RED Code Chef Join Date: Oct 2001 Location: Holland Posts: 12,514	Now murph it makes perfect sense <g> An elementary stream can only have one thing. That's why it is called elementary. It's like an audio file only has audio. Normal DVD MPEG2 is in a transport/program stream and contains at least two elementary streams within. One for video and one for audio. DVD's also have elementary streams for subtitling and some other stuff. As said above, it sounds like they have two seperate element streams (like a video and audio track on a tape) instead of one combined stream. __________________ Rob Lohman, visuar@iname.com DV Info Wrangler & RED Code Chef Join the DV Challenge \| Lady X Search DVinfo.net for quick answers \| Buy from the best: DVinfo.net sponsors

September 27th, 2004, 07:48 PM	#5
Phil Wright CineForm (Aspect HD) Join Date: Aug 2003 Location: Oceanside, CA Posts: 57	"Hey, almost no one has commented on the "Packetized Elementary Stream" coming out of the FX1. Doesn't anyone want to discuss this?" Probably because in the end the difference is meaningless. How you edit will still be determined by the software you use. Once everyone has their updates out with support for the Sony camera the end-user experience will be no different than that with the JVC camera. (Beyond the obvious ones of higher resolution and interlaced vs progressive.)

September 28th, 2004, 05:17 AM	#7
Christopher C. Murphy Trustee Join Date: Sep 2003 Location: Boston, MA Posts: 1,707	Ok, I get it now...thanks for the clear up! Murph __________________ Christopher C. Murphy Director, Producer, Writer