Author Topic: SpaceX Falcon 9 v1.1 CRS-3 Splashdown Video Repair Task Thread  (Read 1201669 times)

Offline rocketguy101

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Re: SpaceX Falcon 9 v1.1 CRS-3 Splashdown Video Repair Task Thread
« Reply #1860 on: 07/30/2014 02:26 am »
Ok, I just tried it and it works via the embedded screen in the forum on my Linux box, but wasn't working on my iPhone through Tapatalk - I thought that something else was going on since I couldn't find it with a search either. Sorry for the false alarm.
It works for me [in the US], I just wondered if it was OK to post the link elsewhere...it is very cool!
David

Offline GregA

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Re: SpaceX Falcon 9 v1.1 CRS-3 Splashdown Video Repair Task Thread
« Reply #1861 on: 07/30/2014 01:46 pm »

It works for me [in the US], I just wondered if it was OK to post the link elsewhere...it is very cool!
Yeah that's okay. :)
I may end up redoing with different audio though!

Online Jarnis

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Re: SpaceX Falcon 9 v1.1 CRS-3 Splashdown Video Repair Task Thread
« Reply #1862 on: 08/04/2014 10:39 am »
Protip on YouTube: Never use third party copyrighted audio. You'll get totally random results - some regions see it fine, some see it with ads, some get "blocked by XXXX" - rights to various music pieces are a massive global mess where single piece of music may have dozens of "owners" depending on where you are...

Either completely original music, or music that is specifically released as royalty-free. Otherwise YouTube will make a mess, one way or the other. Worst thing; You may yourself be completely unaware that, say, 80% of the world can't view the video at all because of copyright claims.

Offline Lars_J

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Re: SpaceX Falcon 9 v1.1 CRS-3 Splashdown Video Repair Task Thread
« Reply #1863 on: 08/04/2014 09:05 pm »
Protip on YouTube: Never use third party copyrighted audio. You'll get totally random results - some regions see it fine, some see it with ads, some get "blocked by XXXX" - rights to various music pieces are a massive global mess where single piece of music may have dozens of "owners" depending on where you are...

Either completely original music, or music that is specifically released as royalty-free. Otherwise YouTube will make a mess, one way or the other. Worst thing; You may yourself be completely unaware that, say, 80% of the world can't view the video at all because of copyright claims.


Another alternative is to upload another version of it without music, and then link to it in the description of the original video with a "in case you can't watch this, go here" message.
« Last Edit: 08/04/2014 09:05 pm by Lars_J »

Offline GregA

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SpaceX Falcon 9 v1.1 CRS-3 Splashdown Video Repair Task Thread
« Reply #1864 on: 08/05/2014 12:30 pm »
Yeah I'll make a version without music. Wonder if I should integrate the latest landing video...

Edit. But I assume there's a good reason that vid keeps disappearing from NSF, which I'd rather blindly respect.
« Last Edit: 08/05/2014 12:34 pm by GregA »

Offline cscott

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Re: SpaceX Falcon 9 v1.1 CRS-3 Splashdown Video Repair Task Thread
« Reply #1865 on: 08/06/2014 01:47 am »
Yeah I'll make a version without music. Wonder if I should integrate the latest landing video...

Edit. But I assume there's a good reason that vid keeps disappearing from NSF, which I'd rather blindly respect.

The video is now public, full story:
3) Thankfully, we now have permission to post this openly, without having to use the links of those who clearly have absolutely no regard for sourcing or accreditation. I appreciate NSF members' patience in waiting for a sanctioned upload, which has been uploaded to one of the CRS-3 Propulsive Landing Video youtube accounts.



Offline Chris Bergin

Coming up on 420,000 views! And bumping as I saw yet more twitter references to it last night.

It's the gift that just keeps on giving.

And I have to say, SpaceX continue to appreciate it - it's mentioned almost every time a SpaceXer talks to me for the first time. We're working on building a very strong relationship (long term effort, but one that could be amazing for both parties) that you'll start to see more and more over the future. A lot of that will be thanks to this NSF crowd sourcing effort.
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Offline deruch

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Re: SpaceX Falcon 9 v1.1 CRS-3 Splashdown Video Repair Task Thread
« Reply #1867 on: 09/18/2014 07:52 am »
Coming up on 420,000 views! And bumping as I saw yet more twitter references to it last night.

It's the gift that just keeps on giving.

And I have to say, SpaceX continue to appreciate it - it's mentioned almost every time a SpaceXer talks to me for the first time. We're working on building a very strong relationship (long term effort, but one that could be amazing for both parties) that you'll start to see more and more over the future. A lot of that will be thanks to this NSF crowd sourcing effort.

I'm sure I'm not the only reader of these fora that gets a smile on his face when there's a "new" badge next to this thread. :)
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Offline mlindner

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Re: SpaceX Falcon 9 v1.1 CRS-3 Splashdown Video Repair Task Thread
« Reply #1868 on: 11/22/2014 04:25 pm »


The video is private. This is the one linked from Elon's twitter, SpaceX's twitter and SpaceX's website. Why is this video private now???
« Last Edit: 11/22/2014 04:28 pm by mlindner »
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Offline moralec

Any ideas?

Offline mvpel

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Re: SpaceX Falcon 9 v1.1 CRS-3 Splashdown Video Repair Task Thread
« Reply #1870 on: 12/13/2014 07:39 pm »
That's an earlier version, it would appear. The channel is here:

www.youtube.com/channel/UCyZDgyJBYz3OXD3JbDJzNww

... and the final version posted in the channel is here:



I can't tell who owns the XoufUV5oGTo version...
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Offline Llian Rhydderch

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Re: SpaceX Falcon 9 v1.1 CRS-3 Splashdown Video Repair Task Thread
« Reply #1871 on: 12/31/2014 10:36 am »
The successful controlled-descent test on CRS-3 has made the 2014 in science list on Wikipedia.    8)

Look at 18 April.

Congratulations to all who were involved in documenting the video return of this historic flight!
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Offline Chris Bergin

Placing you guys on Standby One just in case Emily Lakdawalla needs some help!

I've made the offer and if accepted we'll set up a thread. Lightsail is cool, but Emily is also a friend of the site.
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Offline cscott

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Re: SpaceX Falcon 9 v1.1 CRS-3 Splashdown Video Repair Task Thread
« Reply #1873 on: 06/10/2015 02:14 pm »
They've asked for help decoding a JPEG:
https://twitter.com/jasonrdavis/status/608625405449261057
Quote
CROWDSOURCE CALL: Can you help compile a #LightSail image? This JPG is from other camera, but loads as blank image.  http://t.co/YZ3w0JwS5b
https://twitter.com/jasonrdavis/status/608630375745593344
Quote
The #LightSail image I posted has first 24 bytes removed (metadata), and this header attached: http://t.co/TEDRVQlgXy
https://twitter.com/jasonrdavis/status/608630904894803968
Quote
Finally, here's the original-original #LightSail image, with metadata intact and no headers attached: http://t.co/COTkDCgcYr Thanks!
https://twitter.com/jasonrdavis/status/608647966170054656
Quote
For those having trouble with LightSail links, here's a Google doc: https://docs.google.com/document/d/1DiPleK4f0VEK2joqYXFrceWBS-CWV25kTOYo0UC3AUA/edit?usp=sharing
Quote
LightSail image processing help

Thanks for helping us try to compile LightSail's second sails-out camera image!

Original image from spacecraft:
http://planetary.s3.amazonaws.com/assets/z-misc/2015/1.jpg

The first 24 bytes store metadata like image resolution (1600 x 1200) and timestamp. This is NOT part of the JPG format and is instead removed and used to generate file names.

Our process for creating a viewable image is to:

Remove the first 24 bytes of the file.
Append a header to the beginning of the file.

The header can be found here:
http://planetary.s3.amazonaws.com/assets/z-misc/2015/header.txt

For this particular image, this is the result:
http://planetary.s3.amazonaws.com/assets/z-misc/2015/P01_15878x16388_176-1_T47_3_26_D2_20_0.out.jpg

However, as you can see, the image does not load.

Here's how things look when the process works correctly.

Yesterday's raw sails-out JPG:
http://planetary.s3.amazonaws.com/assets/z-misc/2015/full-sail1.jpg

After removing the first 24 bytes and appending the header, this was the result:
http://planetary.s3.amazonaws.com/assets/z-misc/2015/P02_1600x1200_30-1_T0_47_33_D20_0_70.out.jpg
« Last Edit: 06/10/2015 06:57 pm by cscott »

Offline saliva_sweet

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Re: SpaceX Falcon 9 v1.1 CRS-3 Splashdown Video Repair Task Thread
« Reply #1874 on: 06/18/2015 06:53 pm »
They've asked for help decoding a JPEG:
https://twitter.com/jasonrdavis/status/608625405449261057

Well. I looked today, and that does not look like a jpg at all. It's some sort of repetitive message. Looks to be 1024 byte packets. May be telemetry or something.

Offline cscott

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Re: SpaceX Falcon 9 v1.1 CRS-3 Splashdown Video Repair Task Thread
« Reply #1875 on: 06/18/2015 07:06 pm »
Within a day after receiving this, the satellite's transmitter got stuck in a CW tone of some sort.  I wonder if this is an early indicator of that problem?

Offline moralec

Should we start a new thread for this? Repair Task 2.0 :)

Offline Lee Jay

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Offline cscott

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Re: SpaceX Falcon 9 v1.1 CRS-3 Splashdown Video Repair Task Thread
« Reply #1878 on: 06/18/2015 08:35 pm »
They got that picture down:

http://www.planetary.org/blogs/jason-davis/2015/20160615-lightsail-test-mission-ends.html

No, the undecoded data I posted above is the picture from the "opposite side", described in your cited article as, "But before engineers could get a picture from the opposite-side cameras, LightSail’s radio began transmitting a continuous, nonsensical signal, and the spacecraft stopped responding to commands."

As I speculated above, the repeated patterns found by @saliva_sweet may in fact be the first indicators of the "continuous, nonsensical signal" that LightSail eventually settled into.

The mystery of this lockup beacon is still unsolved.
« Last Edit: 06/19/2015 12:53 am by cscott »

Offline princess

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Re: SpaceX Falcon 9 v1.1 CRS-3 Splashdown Video Repair Task Thread
« Reply #1879 on: 07/16/2015 12:41 pm »
I had a look at the Lightsail data and I can confirm what saliva_sweet found - it's not JPG data, it's some other data in 1024-byte packets. Other things I found are:

1. The packets seem to be repeating data with bitflips between each packet. I can't see any values that change numerically, and the bitflips seem fairly randomly distributed through the packet, so I don't think it's telemetry. It seems more like the computer is attempting to transmit the same packet again and again, with corruption occurring.

2. I tried splitting the packets at different boundaries - the lowest difference between consecutive packets occurs if you start at 928 bytes into the file.

3. The packets go out of alignment in two different places, by two bytes each time (both are a two byte deletion). If you take the first line of each packet's hexdump and display them one after another, the misalignment places are easy to see.

4. There seem to be two different types of packet. The file initially only contains the first type of packet, and then the second type starts appearing interleaved with the first. It's not a perfect interleave, you sometimes get multiple instances of one type before it flips to the other type.

In summary, it looks more like the repeated transmission of two different 1K packets of data, with random corruption. I'm not sure if a radio fault or a CPU fault would do this, but it's certainly intriguing!

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