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

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Old September 12th, 2004, 05:50 PM   #1
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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
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Old September 14th, 2004, 06:58 AM   #2
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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.
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Old September 15th, 2004, 12:44 PM   #3
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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!

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Old September 27th, 2004, 05:43 PM   #4
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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
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Old September 27th, 2004, 08:48 PM   #5
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"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.)
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Old September 28th, 2004, 02:34 AM   #6
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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.
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Old September 28th, 2004, 06:17 AM   #7
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Ok, I get it now...thanks for the clear up!

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