Print slightly more useful info.

Originally committed as revision 12295 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/avidec.c

@@ -488,8 +488,8 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)
                     break;
                 case CODEC_TYPE_AUDIO:
                     get_wav_header(pb, st->codec, size);
-                    if(ast->sample_size && st->codec->block_align && ast->sample_size % st->codec->block_align)
-                        av_log(s, AV_LOG_DEBUG, "invalid sample size or block align detected\n");
+                    if(ast->sample_size && st->codec->block_align && ast->sample_size != st->codec->block_align)
+                        av_log(s, AV_LOG_WARNING, "sample size (%d) != block align (%d)\n", ast->sample_size, st->codec->block_align);
                     if (size%2) /* 2-aligned (fix for Stargate SG-1 - 3x18 - Shades of Grey.avi) */
                         url_fskip(pb, 1);
                     /* Force parsing as several audio frames can be in