[Sis-mia] CCSDS edge case for hardware encoder video testing of DTN

Fri Apr 19 20:52:08 UTC 2024

Just got back from Las Vegas/NAB. See answers below next to **

“Live Life Forward”
Rodney Grubbs, NASA Emeritus & ESDMD Consultant
Chair, CCSDS Motion Imagery & Applications Working Group
931-229-6030 (Personal phone)

Note: I retired from NASA on March 31, 2023. My Emeritus status only relates to supporting NASA/MSFC’s CCSDS matters.

From: "Raible, Daniel E. (GRC-LCP0)" <daniel.e.raible at nasa.gov>
Date: Wednesday, April 17, 2024 at 7:43 AM
To: "Lindblom, Walter E. (MSFC-IS64)[AEGIS]" <walt.lindblom at nasa.gov>, "Grubbs, Rodney P. (MSFC-AS50)[EMERITUS PROGRAM]" <rodney.p.grubbs at nasa.gov>, "Grubbs, Rodney P. (MSFC-AS50)[EMERITUS PROGRAM] via SIS-MIA" <sis-mia at mailman.ccsds.org>
Cc: "George, Sandy (MSFC-IS64)[AEGIS]" <sandy.george at nasa.gov>, "St. Peter, Beth (MSFC-HP10)" <elizabeth.m.st.peter at nasa.gov>, "Kortas, Nadia (GRC-LSX0)" <nadia.kortas at nasa.gov>, "Schweinsberg, Ethan {He, Him} (GRC-LSS0)" <ethan.e.schweinsberg at nasa.gov>, "McKeehan, Shaun M. (GRC-LSX0)" <shaun.mckeehan at nasa.gov>, "Short, Bob (GRC-LCN0)" <robert.s.short at nasa.gov>, "Aylward, Hugh E. (GRC-VO00)[eMITS]" <hugh.e.aylward at nasa.gov>, "Choksi, Prash (GRC-LCA0)" <prash.choksi at nasa.gov>, "Recker, Timothy J. (GRC-LCI0)" <timothy.recker at nasa.gov>, "Dudukovich, Rachel M. (GRC-LCI0)" <rachel.m.dudukovich at nasa.gov>, "Tomko, Brian J. (GRC-LSX0)" <brian.j.tomko at nasa.gov>, "Firak, James M. (GRC-VO00)[eMITS]" <james.m.firak at nasa.gov>, "Kollar, Tad {he, him} (GRC-LSX0)[BQMI]" <tad.kollar at nasa.gov>, "Nowakowski, John J. (GRC-MSC0)" <john.j.nowakowski at nasa.gov>
Subject: CCSDS edge case for hardware encoder video testing of DTN

Hello Rodney and All,

We had a good meeting with Hugh and James with our GRC media group, who have the hardware encoder from Sandy, and are awaiting an additional piece (or two?) which should be arriving Friday or perhaps Monday of next week.  Our plan is to conduct the testing in their media lab, as Hugh and James have graciously offered to provide their talents on the video side of the tests while we handle the DTN processing.  To reiterate, we are planning on the following streaming configurations for the test points:

720P30 h.264 @ 2 Mbps
720P60 h.264 @ 4 Mbps
1080P30 h.265 @ 4 Mpbs, 6 Mbps and 8 Mbps
1080P60 h.265 @ 6 Mbps and 8 Mbps
2160P30 h.265 @ 6 Mpbs and 8 Mbps
2160P60 h.265 @ 8 Mbps

A few important questions remain:

  *   Any priority to the above points, such as start with the highest load and step down from there?
**Probably best to start with the more complex and work your way down (2160P60 @ 8Mbs >)

  *   One unknown still is the media source.  Walt, were you still sending a camera?  GRC may also have equipment available in the ITC studio, but it sounds like we need to check for the encoder interconnect compatibility with the component yet to arrive.
**I will let Walt answer that one. I’d be surprised if there wasn’t a camera available there at GRC.

  *   Should we rather utilize a standardized complex test pattern/protocol instead of a random live camera image?
**Something with motion, preferably random motion. Moving water like a small desktop water feature would be good, something with hard edges, like small streamers with a fan behind it. Use your imagination. Walt could give you some ideas.

  *   We are getting very close to the end of the month, so am I correct in understanding you need these results for the upcoming CCSDS meeting?  And if so, what is your actual deadline so we can rally around it?
**Yes, I sent out the agenda today. Tuesday morning, April 30th is when we’d like to be able to discuss the results. Please verify you saw my CCSDS email.

  *   Finally, what kind of verification for test success are you looking for?  Are simple bit checks between the source and destination file content after transmitting across a DTN sufficient?  We could perform some post-processing quality metrics, but given the time crunch I don’t know what all we could promise here.
**Visual confirmation of quality looking video (subjective) and then analysis of whether the stream dropped frames/packets, bit-error rates.

We’re still very committed to conducting these tests for you, so as soon as the equipment situation can be sorted we can commence the testing.

Thanks in advance for your timeliness.

Regards,
Daniel

Dr. Daniel E. Raible, KE8ESB
Electronics Engineer, Optics and Photonics Branch (LCP)
NASA John H. Glenn Research Center at Lewis Field
21000 Brookpark Road, Mail Stop 77-2
Cleveland, OH 44135-3191
phone: (216) 433-3367 fax: (216) 433-8705

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