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Thanks Jeremy. Your midi-chlorian count must be off the charts. (Star Wars geek humor)<br class="">
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*****</div>
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Rodney Grubbs </div>
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NASA Imagery Experts Program Manager</div>
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MSFC EO50</div>
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<div class="">On Dec 13, 2016, at 5:44 AM, <a href="mailto:Jeremy.mayer@dlr.de" class="">
Jeremy.mayer@dlr.de</a> wrote:</div>
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<span style="font-size: 11pt; color: rgb(31, 73, 125);" class="">Hey Keith,<o:p class=""></o:p></span></div>
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<span style="font-size: 11pt; color: rgb(31, 73, 125);" class="">I can answer some of these:<o:p class=""></o:p></span></div>
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<span style="font-size: 11pt;" class="">5.2: The DLR transparent gateway – encapsulates UDP datagrams and is otherwise agnostic to the video protocol running over UDP, yes?<span class="Apple-converted-space"> </span><b class="">–<span class="Apple-converted-space"> </span></b><i class="">Yes,
I touch upon that is section 5.2.1. Should I explain more in 5.2?<o:p class=""></o:p></i></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span style="font-size: 11pt;" class="">5.2.1: the comment in the second paragraph – is the addition correct or is it the gateway timestamp that’s being used (or something else)? <i class="">- Edited.<o:p class=""></o:p></i></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span style="font-size: 11pt;" class="">5.2.2: where you say that MPEG-TS and BP are doing some of the same things (robustness for error-recovery and interleaving) – can you say a bit more on the implications of that?<span class="Apple-converted-space"> </span><i class="">–
Edited.<o:p class=""></o:p></i></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span style="font-size: 11pt;" class="">5.2.2: BP does interleaving? I’m thinking ‘traditional’ interleaving where data items are assigned to a matrix row-by-row and read out column-by-column once the matrix is full. I think you’re thinking of something else
– can you tell me what it is you mean?<span class="Apple-converted-space"> </span><i class="">– In the sense of sequentially interspersing different channels on the wire, I would say that BP does perform that task, albeit not in a consistent (row in, column
out) fashion. I would be happy to rephrase, but am drawing a blank as to a better choice of words<span class="Apple-converted-space"> </span></i></span><i class=""><span style="font-size: 11pt; font-family: Wingdings;" class="">J</span></i><i class=""><span style="font-size: 11pt;" class=""><o:p class=""></o:p></span></i></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span style="font-size: 11pt;" class="">5.4: probably a question for later.<span class="Apple-converted-space"> </span><i class="">– All of that section?<o:p class=""></o:p></i></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span style="font-size: 11pt;" class="">6.1: 10% BER w/ what I assume is LTP red – how does that EVER succeed? Chances of getting 100 Bytes through correctly at 10% BER are really low.<span class="Apple-converted-space"> </span><i class="">If the buffer is
longer than 2x OWLT, it’s possible. We also used short GOP structures for some testing.There was an error in this section, which has been corrected. Thanks for the eyes.<o:p class=""></o:p></i></span></div>
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<span style="font-size: 11pt; color: rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></div>
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<span style="font-size: 11pt; color: rgb(31, 73, 125);" class="">A new copy is included.<o:p class=""></o:p></span></div>
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<span style="font-size: 11pt; color: rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span style="font-size: 11pt; color: rgb(31, 73, 125);" class="">Thanks,<o:p class=""></o:p></span></div>
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<span style="font-size: 11pt; color: rgb(31, 73, 125);" class="">Jeremy<o:p class=""></o:p></span></div>
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<span style="font-size: 11pt; color: rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></div>
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<b class=""><span style="font-size: 10pt; font-family: Tahoma, sans-serif;" class="">From:</span></b><span style="font-size: 10pt; font-family: Tahoma, sans-serif;" class=""><span class="Apple-converted-space"> </span>Scott, Keith L. [<a href="mailto:kscott@mitre.org" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">mailto:kscott@mitre.org</a>]<span class="Apple-converted-space"> </span><br class="">
<b class="">Sent:</b><span class="Apple-converted-space"> </span>Montag, 12. Dezember 2016 18:49<br class="">
<b class="">To:</b><span class="Apple-converted-space"> </span>Grubbs, Rodney P. (MSFC-EO50); Mayer, Jeremy<br class="">
<b class="">Cc:</b><span class="Apple-converted-space"> </span><a href="mailto:sis-mia@mailman.ccsds.org" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">sis-mia@mailman.ccsds.org</a><br class="">
<b class="">Subject:</b><span class="Apple-converted-space"> </span>Questions on Video Streaming Green Book<o:p class=""></o:p></span></div>
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<o:p class=""> </o:p></div>
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<span style="font-size: 11pt;" class="">Hey,<o:p class=""></o:p></span></div>
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<span style="font-size: 11pt;" class=""><o:p class=""> </o:p></span></div>
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<span style="font-size: 11pt;" class="">Attached are some light edits and some questions about the Bundle Streaming Requirements Green Book (the comments in the markup). Since CESG review is the only thing the Green Book goes through, can I get your feedback
on the commented items before I submit to CESG?<o:p class=""></o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span style="font-size: 11pt;" class=""><o:p class=""> </o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span style="font-size: 11pt;" class="">Summary of questions:<o:p class=""></o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span style="font-size: 11pt;" class="">5.2: The DLR transparent gateway – encapsulates UDP datagrams and is otherwise agnostic to the video protocol running over UDP, yes?<o:p class=""></o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span style="font-size: 11pt;" class="">5.2.1: the comment in the second paragraph – is the addition correct or is it the gateway timestamp that’s being used (or something else)?<o:p class=""></o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span style="font-size: 11pt;" class="">5.2.2: where you say that MPEG-TS and BP are doing some of the same things (robustness for error-recovery and interleaving) – can you say a bit more on the implications of that?<o:p class=""></o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span style="font-size: 11pt;" class="">5.2.2: BP does interleaving? I’m thinking ‘traditional’ interleaving where data items are assigned to a matrix row-by-row and read out column-by-column once the matrix is full. I think you’re thinking of something else
– can you tell me what it is you mean?<o:p class=""></o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span style="font-size: 11pt;" class="">5.4: probably a question for later.<o:p class=""></o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span style="font-size: 11pt;" class="">6.1: 10% BER w/ what I assume is LTP red – how does that EVER succeed? Chances of getting 100 Bytes through correctly at 10% BER are really low.<o:p class=""></o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span style="font-size: 11pt;" class=""><o:p class=""> </o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" class="">
<span style="font-size: 11pt;" class=""><o:p class=""> </o:p></span></div>
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<span style="font-size: 11pt;" class=""> --keith<o:p class=""></o:p></span></div>
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<span style="font-size: 11pt;" class=""><o:p class=""> </o:p></span></div>
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<span id="cid:7B1AEF53-44A6-4C14-A0BD-2E482D2F19E6@msfc.nasa.gov"><Green Book_Video_over_BP_1.6_Post_Rome_and_Keith.docx></span></div>
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