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1.What are the reasons Team BlackSheep does not use the AV out from the GoPro to fly from?
1) GoPro requires a separate battery to deliver a picture. If that battery goes flat, we lose picture. If we forget to charge it, we can't go fly. Single-battery systems are an essential part of our security philosophy.
2) The GoPro A/V out connector is out the side, which creates a significant point of failure on hard landings or flying through trees and bushes. Cables sticking out the sides can catch on to branches and pull out or break the whole camera.
3) The GoPro does not work well in dusk or dawn. The ground is sometimes too dark when flying against the sun. A "WDR" security camera delivers better picture to the pilot
4) Our video transmitter use 4:3 aspect ratio, the AV output on the GoPro uses whatever we record at, which is 16:9. This reduces the resolution of the transmitted picture.
5) The GoPro has latency on the video output. While this latency is negligible when flying high altitude or slow, down on the ground when fast reactions are required the latency will be a problem.
6) The GoPro can inject RF noise back into your R/C system and deteriorate its range when it's being powered from the same battery as the receiver.
1.是什么原因让Team BlackSheep 不用gopro的实时输出去飞呢？
1)GoPro需要独立的电池供电拍摄。如果电池就没电我们就失去了图像。如果我们忘记给它充电,我们就不能飞。独立供电是系统的一个重要安全保障部分。
2)GoPro A/V输出连线在硬着陆或飞过树木时造成了一定的安全隐患。电线伸出来的地方会被树枝或草丛挂住从而导致相机的坠落或损坏。
3)GoPro在黄昏或黎明时效果并不满意。当我们面对太阳飞时地面有时候太黑了。“宽动态，自动调节对比度”的摄像头能保障传送更好的图像给飞行员。（谢谢翼龙Isaac同学:loveliness: ）
4)我们的视频发射器（图传）使用 4:3 的宽高比,GoPro的AV输出无论我们如何接收都是16:9。这样将减少了传输的图像分辨率。
五)GoPro在视频输出上有延迟。虽说这种延迟在高空飞行时或者缓慢飞行时是可以忽略不计的,但是在贴地飞行时这种延迟将对快速反应造成必然的影响。
六)gopro会产生射频噪音，如果用同一个电源来驱动gopro和控制系统的话，会干扰你的遥控系统并且会影响接受范围
2.What settings does Team BlackSheep record at?
We now exclusively record at R3 setting, which is 720p at 60 fps. We find it delivers the best picture (wide angle means less shaky) and gives us the biggest freedom for post-processing in terms of slow- or fast-motion and deshaking.
2.BlackSheep使用什么设置来记录?
我们现在只用R3设置来记录,即720p,60fps。我们发现这能提供最好的影片(广角意味着更少的晃动),以及给予我们后期处理的最大自由——快速或慢速播放以及减少震动
3.What software do you use to edit your GoPro HD videos?
For PC we suggest Sony Vegas (version 10 at the time of writing this article). Usability and functionality are in a good balance. For more advanced post-processing and CG we suggest Adobe Premiere and AfterEffects.
3.你们用什么软件编辑你们拍摄的GoPro高清视频？
我们建议用电脑上的Sony Vegas(写这篇文章时是版本10)。易用性和功能都不错。对于更高级的后处理和CG我们建议Adobe Premiere和AfterEffects。
4.Do you deshake your GoPro footage?
No, we do not. You can deshake GoPro footage using VirtualDub and the included "De-Shaker", though. The results are pretty good, the sharpness of the image is affected a little bit as you reduce the resolution and up-scale the movie again while de-shaking. On a more subjective note, we feel deshaking would destroy the "action-feel" of our videos.
4.你减少你的GoPro画面震动吗？
不,我们没有。你可以使用VirtualDub和附带的“De-Shaker”减少GoPro镜头的抖动。尽管结果相当不错,但图像的清晰度会有一点降低，同样的，当你降低分辨率时，抖动也会减少一些。另一个个人感觉,我们感觉减少抖动会破坏我们的视频“动感"。
http://www.team-blacksheep.com/他们的网站
那里不对清指出...
[ 本帖最后由 nmgzjb1234 于 2012-7-13 09:53 编辑 ] |
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发表于 2012-7-12 22:27
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