如何通过adb shell am播放音视频文件

如何通過ａｍ　啓動一個電話：

am start -a android.intent.action.CALL -d tel:10010

如何使用alsa_aplay 播放一個本地ｒａｗ文件．

alsa_aplay -C  -Dhw:2,0 -r 8000 -c 1 -f S16 -t raw /d.raw

一、如果想通过adb shell播放一个mp3文件，可以通过以下的命令完成：

（1）通过am 播放音频文件

 mp3 file located at /storage/sdcard0/Music/hello.mp3

adb shell am start -a "android.intent.action.VIEW" -t "audio/mp3" -d "file:///storage/sdcard0/Music/hello.mp3"

（2）通过am 播放视频文件：

  

For video playback, you can try this:

adb shell am start -a android.intent.action.VIEW -d "file:///mnt/sdcard/DCIM/Camera/test.3gp" -t "video/*" 

gives you a prompt of all capable players that can play this file.

adb shell am start -a android.intent.action.VIEW -d "file:///mnt/sdcard/DCIM/Camera/test.3gp" -t "video/*" -n "com.alensw.PicFolder/.PlayerActivity" 

二、也可以通过编译一个可执行文件来在终端运行，以下是一个例子：

    http://stackoverflow.com/questions/26298306/android-adb-shell-command-to-play-sound-from-the-command-line/26329605#26329605

Android adb shell command to play sound from the command line

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I have a set of rooted android devices I can access through adb over tcp/ip.I am trying to identify a specific one by playing a sound from the command line (one of the .ogg files from /system/media/audio). I know I could probably build an app for this but it feels like an overkill to use an APK, and I'm hoping there is a more native way. I already know how to start intents from the command line. Things I have tried : Investigated using service call media.player but could not find any useful reference about the syntax. I can see withdumpsys media.player references about AwesomePlayer but couln't get anything going. Tried to find a compiled version of "/system/bin/media" from the android source code, as it is missing from the device, but without any luck so far. Tried to build a command line java app to call android.media.MediaPlayer withdalvikvm but my knowledge of Android and java is too limited (class compiled but complained about missing dependencies at runtime) Any ideas? androidadb share|improve this question editedOct 10 '14 at 12:00 asked Oct 10 '14 at 11:25 Benjamin 12615

Hope this can be helpful for you:stackoverflow.com/questions/2203495/… –  krossovochkin Oct 10 '14 at 11:38 1 Thanks for the quick reply. Actually I'm trying to avoid launching a user app and looking for a more system native solution if possible. – BenjaminOct 10 '14 at 11:53 1 I found this article: a3nm.net/blog/android_cli.html There 'stagefright' is mentioned. In the AOSP 'stagefried' is mentioned too:source.android.com/devices/media.html May be you can try to look in this direction. Hope it helps – krossovochkinOct 11 '14 at 7:09 Thanks, just posted the solution I'm currently using. – BenjaminOct 12 '14 at 20:26 add a comment

1 Answer

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After some trial and error, I will answer what is now working for me. Based on other threads, I found the following java code to be the bare minimum to play some sound through the speaker. The MediaPlayer class seems the only one that will play with no user interaction, as others need a real activity context... public class Beep { public static void main(String[] a) { MediaPlayer mp = new MediaPlayer(); try { mp.setDataSource("/system/media/audio/alarms/Ticktac.ogg"); mp.prepare(); mp.start(); } catch (IOException e) { Log.w("Beep", "IOException", e); } } (actual working example is here) This must then be compiled as a dex file, linked to android.jar, and can finally be run from the adb shell command line using app_process (not dalvikvm) : export CLASSPATH=./Beep.dex app_process /system/bin Beep /system/media/audio/ringtones/Beep-beep.ogg It is not the one-liner I was hoping for but does what I needed...