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Falcon 9 First Stage Landing Video

77 pointsby biscottiabout 11 years ago

9 comments

jwise0about 11 years ago
SpaceX has taken an interesting approach here -- effectively, they&#x27;ve crowdsourced a more-robust MPEG decoder! It would be interesting to hear a description of the steps they&#x27;ve already taken to repair the bitstream (and would be <i>really</i> cool to see source for it). I fear that may be asking too much, though.<p>I also wonder how much could be recovered if they had a sufficiently advanced soft-decision air interface. If the missing macroblocks from the bitstream are simply macroblocks that have failed a checksum, data from the radio receiver as to which bits it has the lowest confidence in could be very valuable in pulling more blocks &quot;from thin air&quot;. The answer may be &quot;no, there is nothing else to recover&quot;, but it seems like a good jumping-off point for more research...
taf2about 11 years ago
In the repaired video at about 5 or 4 seconds left you can see pretty clearly a still pic of the rocket over water - pretty cool
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XorNotabout 11 years ago
This had to be so disappointing when they pulled the footage out and found it.<p>You can kind of vaguely get a sense that it worked from the picture though: the motion in the compression artifacting shows the engine burning till landing, and then you get the distinct &quot;tipping over&quot; sense afterwards before it all goes grey.
jack-r-abbitabout 11 years ago
Bummer the quality is so poor. I was really hoping for something really, really cool to watch. I&#x27;m guessing this is more than just a GoPro taped to the side so it is surprising to me that the video failed so hard. It also surprises me that they didn&#x27;t have several cameras just in case. But in the interest of staying positive, I guess they learned a few more things to avoid next time. I am super excited about the progress SpaceX has made and will continue to make. I can&#x27;t even count the number of times I&#x27;ve watched the &quot;low launch and ground landing&quot; videos. So cool to watch history in the making.
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idmabout 11 years ago
Paging Oona Räisänen... It&#x27;s been posted here before, but that helicopter signal decoding was quite a feat. [1]<p>1: <a href="http://www.windytan.com/2014/02/mystery-signal-from-helicopter.html" rel="nofollow">http:&#x2F;&#x2F;www.windytan.com&#x2F;2014&#x2F;02&#x2F;mystery-signal-from-helicopt...</a>
joshlegsabout 11 years ago
was totally expecting an awesome video. maybe someone can edit the title to reflect the problems with it?<p>in any case, it&#x27;s still a cool video
mikeashabout 11 years ago
I was wondering why it was taking them so long to post a video. Either post it or don&#x27;t, but a delay is just weird.<p>Well, now it all makes sense. Terrible corruption! Unfortunate, but these things happen. Certainly a minor failure compared to the overall great success of this test.
thanabout 11 years ago
Great SpaceX interview question, or greatest SpaceX interview question?
pinkskipabout 11 years ago
0.o