@@ -391,6 +391,12 @@ static int decode_element(AVCodecContext *avctx, AVFrame *frame, int ch_index,

                 *outbuffer++ = alac->output_samples_buffer[ch][i];

         }}

         break;

+    case 20: {

+        for (ch = 0; ch < channels; ch++) {

+            for (i = 0; i < alac->nb_samples; i++)

+                alac->output_samples_buffer[ch][i] <<= 12;

+        }}

+        break;

     case 24: {

         for (ch = 0; ch < channels; ch++) {

             for (i = 0; i < alac->nb_samples; i++)

@@ -556,6 +562,7 @@ static av_cold int alac_decode_init(AVCodecContext * avctx)

     switch (alac->sample_size) {

     case 16: avctx->sample_fmt = AV_SAMPLE_FMT_S16P;

              break;

+    case 20:

     case 24:

     case 32: avctx->sample_fmt = AV_SAMPLE_FMT_S32P;

              break;