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diff -Naur ffmpeg-r19067.orig/libavcodec/pngdec.c ffmpeg-r19067/libavcodec/pngdec.c
--- ffmpeg-r19067.orig/libavcodec/pngdec.c 2009-05-24 08:44:54.000000000 -0400
+++ ffmpeg-r19067/libavcodec/pngdec.c 2009-06-02 23:42:29.000000000 -0400
@@ -593,6 +593,14 @@
}
}
exit_loop:
+/* ffmpeg-r18421 introduced support for CorePNG p-frames which
+ * breaks raw png sequences created by QuickTime Pro.
+ * since only the first png appears to be marked as PKT_FLAG_KEY
+ * it means either QuickTime Pro is encoding incorrectly, or
+ * this code block needs to find other criteria.
+ * --kb
+ */
+#if 0
/* handle p-frames only if a predecessor frame is available */
if(s->last_picture->data[0] != NULL) {
if(!(avpkt->flags & PKT_FLAG_KEY)) {
@@ -609,6 +617,7 @@
}
}
}
+#endif
*picture= *s->current_picture;
*data_size = sizeof(AVFrame);
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