无尽的视频录制 [英] Endless Video Recording

问题描述

我建立一个应用程序，将持有录制视频的60秒缓冲。视频记录需要为在延长的时间周期（24-48小时）运行。我似乎没有有记录的任何问题，但现在看来，我失去了我的相机连接或表面后的几个小时的时间。

I am building an app that will hold a 60 second buffer of recorded video. The video recording needs to run for an extended period of time (24-48 hours). I do not seem to have any issues with recording, but it appears that I lose the connection with my Camera or Surface after a few hours of time.

我设置最大持续时间： MediaRecorder.setMaxDuration（10 * 1000），以便记录被分解成10个第二段

I am setting the max duration: MediaRecorder.setMaxDuration(10 * 1000) so that recording is broken up into 10 second segments.

每个时间我重新启动记录我递增输出文件以这样一种方式，6个文件被重复使用。其目的是保持60秒的历史时刻。

Each time I restart my recording I am incrementing the output file in such a way that 6 files are reused. The purpose is to keep a 60 second history at all times.

如果我1-2小时后停止录音录像回放罚款。但是，如果我让它运行3-4个小时以上，并停止录制，视频显示只有黑色输出的与音频。换句话说，这是因为如果它失去了用相机或表面的的连接，但继续录制音频

If I stop the recording after 1-2 hours the videos play back fine. However, if I let it run for 3-4+ hours and stop the recording, the videos shows only black output with audio. In other words, it is as if it lost a connection with the camera or surface but continued recording audio.

任何人都可以解释这种现象？

Can anyone explain this behavior?

如果不出意外，有没有更好的方式来记录的 X 视频第二段？

If nothing else, is there a better way to record X second segments of video?

FYI：我使用的是唤醒锁使画面/ CPU留在

FYI: I am using a wake lock so that the screen/CPU stay on.

推荐答案

我已经有点在这里回答了我自己的问题。我没有很多的信息，但希望这将提供足够的信息，以帮助他人在类似predicament。

I have sort of answered my own question here. I don't have a lot of information, but hopefully this will provide enough information to help others in a similar predicament.

首先，我从来没有张贴了我的code，因为它的办法的过于冗长。我没有张贴我的code的片段，因为我不知道问题出在哪里了始发。尽管我有现在这样的工作，我仍然不知道什么是错的我的老code。

First, I never posted my code because it's way too lengthy. I didn't post snippets of my code because I did not know where the problem was originating. Despite the fact that I have this working now, I still do not know what was wrong with my old code.

我的建议是：

我结束了我再杀code和开始的发展API演示发现，code记忆犹新：<一href=\"http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/graphics/Camera$p$pview.html\"相对=nofollow> 相机preVIEW - 我发现在这个网站中至少有一个线程此引用

I ended up scrapping my code and starting fresh with the code found in the Development API Demos: CameraPreview -- I found this references in at least one thread on this site.

在那之后我能够不断小时就结束拍摄没有问题。所以，如果你是在一个类似的情况，我建议使用相机preVIEW code作为一个起点。

After that I was able to continually record for hours on end without problem. So if you are in a similar situation, I would suggest using the CameraPreview code as a starting point.

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