I have searched a lot on google but unfortunately have not found any solution of screen video recording. If you have used the Screencast Video Recorder from google play, you can better understand my question. Can anyone help me out that how to achieve screen video recording programmatically.
AFAIK Screencast records by reading /dev/graphics/fb0, which is slow.
Programmatically the highest performance method is to create a virtual display. Currently only works on Android 4.4. See the screenrecorder.cpp for how to do this:
https://android.googlesource.com/platform/frameworks/av/+/android-4.4_r1/cmds/screenrecord/screenrecord.cpp
For Android 4.1 and above you can use the SurfaceComposerClient (both from native or Java code), although it's fairly broken on 4.3.
Unless you want to write a screen recorder yourself I wouldn't bother and just use one of the off-the-shelf recorders.
for some more detail see this answer.
Related
I'm trying to make a radio app. Everything is ok, except playing radios. I'm getting play link from a page with Jsoup. When i press play, (in real device)it takes 40-50 seconds to start playing. But in genymotion device (Google Nexus 4- 4.4.4- API 19) it takes just 3-4 second. I couldn't find what is wrong.
I'm new on Android and I couldn't find a solution for days. Thanks id advance.
I really recommend you to use google exo player instead of default android player for streaming. its too fast and you will never have problems like this.
https://github.com/google/ExoPlayer
You must try it without emulator, as they themselves are slow.
Also give below links a read.
https://developer.android.com/reference/android/media/AudioManager.html
https://developer.android.com/guide/topics/media/mediaplayer.html
For Best performance native is good:
https://developer.android.com/ndk/guides/audio/index.html
Is there any library to record audio+screen in android. I am making a tutorial helping application.
I think that recording the Android emulator is the easy way to go. There are plenty of open source screen recorders for your PC/Mac.
When i run my application on the tablet(android) and hit the pause button it pauses the screen of the video but the video will jump a head how ever many seconds the pause when i un-pause the video. So if i start the video and then click pause and walk away i can come back and un-pause the video and it well jump right to the end.
The code i am using is ns.togglePause(); This same code works on the desktop and works with .flv and .f4v but will not work when i am using a mp4 on the tablet.
Has anyone seen this before or know why it would do something like this?
i am using flashdevelop to debug the application.
I found out that my problem is caused by encoding. This helped me solve my problem.I found this on adobes forms.
Video encoding is very important.
For example, use baseline profile level 3.1 for H264 for mobile
(and not High profile level 4.1 recommended for desktop).
For more information, see the MAX session of Fabio Sonnati:
"Encoding for Performance on Multiple Devices"
And if you have an Android phone/tablet, there is my AIR application
to watch Adobe MAX 2011 videos :
https://market.android.com/details?id=air.fr.inway.maxVideos2011
Search "Sonnati" for this session's video.
(For info, i use a video player based on OSMF 1.6)
The pdf presentation is available on Sonmati's blog:
http://sonnati.wordpress.com/
I've been asking around in developer circles about this, but so far no one has been able to confirm if it is possible. The default behavior for recording video in Android is to not use the external mic. I'd like to create an app that uses an external mic if it is available, but it seems like this might be tricky for some reason. Anyone have insight into this?
It seems like it would just be a matter of selecting it at this point in the recording setup:
recorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
but it seems like there may be some oddness in doing that.
Thanks,
Jon
Default behavior in Android 12 (and I understand starting at 8 or 9) is that external microphones become the primary and default source for input.
It probably depends on the app, but at least video in the default camera app takes my external mic as default.
Take a look at the documentation here (look in the section titled "Performing Audio Capture") it covers setting up the audio capture.
Guys
I am new to android and want to write a simple application that plays a video in android using video view. I have written the code it is working but the view is not clear. It is blurred. What should I do?? Please Help.
Is there any alternative to video view to achieve that...?? I want to play the recorded video from android phones
There are two possibilities. Either the quality of the video might be low or you would have tried it in a emulator. Sometimes it is possible for emulator to have some problems with playing video which I have personally faced. So you have to try it in a real device.
And regarding alternative for videoview, there is no such alternatives available I believe. But still videoview should be simple to play a video.