add .wav

[Wjxfi]

I hope this is supported..

[Bnyro]

wav is NOT supported!

Supported container formats:

        /** 3GPP media file format*/
        public static final int THREE_GPP = 1;
        /** MPEG4 media file format*/
        public static final int MPEG_4 = 2;

        /** The following formats are audio only .aac or .amr formats */

        /**
         * AMR NB file format
         * @deprecated  Deprecated in favor of MediaRecorder.OutputFormat.AMR_NB
         */
        public static final int RAW_AMR = 3;

        /** AMR NB file format */
        public static final int AMR_NB = 3;

        /** AMR WB file format */
        public static final int AMR_WB = 4;

        /** @hide AAC ADIF file format */
        public static final int AAC_ADIF = 5;

        /** AAC ADTS file format */
        public static final int AAC_ADTS = 6;

        /** @hide Stream over a socket, limited to a single stream */
        public static final int OUTPUT_FORMAT_RTP_AVP = 7;

        /** H.264/AAC data encapsulated in MPEG2/TS */
        public static final int MPEG_2_TS = 8;

        /** VP8/VORBIS data in a WEBM container */
        public static final int WEBM = 9;

        /** @hide HEIC data in a HEIF container */
        public static final int HEIF = 10;

        /** Opus data in a Ogg container */
        public static final int OGG = 11;

Supported audio codecs:

        /** AMR (Narrowband) audio codec */
        public static final int AMR_NB = 1;
        /** AMR (Wideband) audio codec */
        public static final int AMR_WB = 2;
        /** AAC Low Complexity (AAC-LC) audio codec */
        public static final int AAC = 3;
        /** High Efficiency AAC (HE-AAC) audio codec */
        public static final int HE_AAC = 4;
        /** Enhanced Low Delay AAC (AAC-ELD) audio codec */
        public static final int AAC_ELD = 5;
        /** Ogg Vorbis audio codec (Support is optional) */
        public static final int VORBIS = 6;
        /** Opus audio codec */
        public static final int OPUS = 7;