diff --git a/libavformat/utils.c b/libavformat/utils.c
index eed4a8804c..f42dd3f6b3 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -1228,8 +1228,8 @@ static AbvEntry frame_abvs[] = {
     { "pal",       720, 576,    25,    1 },
     { "qntsc",     352, 240, 30000, 1001 }, /* VCD compliant ntsc */
     { "qpal",      352, 288,    25,    1 }, /* VCD compliant pal */
-    { "sntsc",     352, 240, 30000, 1001 }, /* square pixel ntsc */
-    { "spal",      352, 288,    25,    1 }, /* square pixel pal */
+    { "sntsc",     640, 480, 30000, 1001 }, /* square pixel ntsc */
+    { "spal",      768, 576,    25,    1 }, /* square pixel pal */
     { "film",      352, 240,    24,    1 },
     { "ntsc-film", 352, 240, 24000, 1001 },
     { "sqcif",     128,  96,     0,    0 },