add png compress option

diff --git a/cmcheckwave.c b/cmcheckwave.c
index 43f458f..ec7cd9e 100644 (file)
--- a/cmcheckwave.c
+++ b/cmcheckwave.c
@@ -316,7 +316,7 @@ int dumpinfo(int mcnt)
                if (thumb) {
                        pre=0;
                        for(i=0;i<mcnt;i++) {
-                               asprintf(&cptr,"%s -ao nul -ss %.2f -frames 1 -vo png  %s ; mv 00000001.png %s-%d.png",MPLAYERCMD,(pre + (m[i].stsec-pre)/2)/1000.0,wkfilename,wkfilename,i);
+                               asprintf(&cptr,"%s -ao nul -ss %.2f -frames 1 -vo png:z=9  %s ; mv 00000001.png %s-%d.png",MPLAYERCMD,(pre + (m[i].stsec-pre)/2)/1000.0,wkfilename,wkfilename,i);
                                tclistpush2(cmdlist,cptr);
                                pre = m[i].stsec;
                        }