Get supported Codec for Android device

问题

Is there a way to ask an Android device what audio and video Codecs it supports for encoding?

I found devices that do not support some of the codecs listed as mandatory in http://developer.android.com/guide/appendix/media-formats.html and there seem to be devices supporting additional codec not listed there.

回答1:

That could be interesting for you:

 private static MediaCodecInfo selectCodec(String mimeType) {
     int numCodecs = MediaCodecList.getCodecCount();
     for (int i = 0; i < numCodecs; i++) {
         MediaCodecInfo codecInfo = MediaCodecList.getCodecInfoAt(i);

         if (!codecInfo.isEncoder()) {
             continue;
         }

         String[] types = codecInfo.getSupportedTypes();
         for (int j = 0; j < types.length; j++) {
             if (types[j].equalsIgnoreCase(mimeType)) {
                 return codecInfo;
             }
         }
     }
     return null;
 }

Found it here. AS you can see you get the number of installed codecs with MediaCodecList.getCodecCount();. With MediaCodecInfo codecInfo = MediaCodecList.getCodecInfoAt(i); you get information about a specific codec out of the list. codecInfo.getName() for example tells you title/name of the codec.

回答2:

Is there a way to ask an Android device what audio and video Codecs it supports for encoding?

I really wish there were, but there is not, at least through ICS.

Jelly Bean offers a MediaCodec class. While it does not have a "give me a list of supported codecs", it does have createEncoderByType(), where you pass in a MIME type. Presumably, that will throw a RuntimeException or return null if your desired MIME type is not supported. And I cannot promise that just because MediaCodec reports that an encoder is available that it is guaranteed to work from, say, MediaRecorder.

来源：https://stackoverflow.com/questions/11791473/get-supported-codec-for-android-device