* Every frame is a key_frame

Originally committed as revision 470 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/pcm.c

@@ -237,6 +237,9 @@ static int encode_frame(AVCodecContext *avctx,
     default:
         return -1;
     }
+    avctx->key_frame = 1;
+    avctx->frame_size = (dst - frame) / (sample_size * avctx->channels);
+
     return dst - frame;
 }