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-rw-r--r--DOCS/man/en/mplayer.14
1 files changed, 4 insertions, 0 deletions
diff --git a/DOCS/man/en/mplayer.1 b/DOCS/man/en/mplayer.1
index 86a3b4c225..ab946c2fd4 100644
--- a/DOCS/man/en/mplayer.1
+++ b/DOCS/man/en/mplayer.1
@@ -4219,6 +4219,10 @@ Each file takes the frame number padded with leading zeros as name.
.IPs z=<0\-9>
Specifies the compression level.
0 is no compression, 9 is maximum compression.
+.IPs alpha (default: noalpha)
+Create PNG files with an alpha channel.
+Note that MPlayer in general does not support alpha, so this will only
+be useful in some rare cases.
.RE
.PD 1
.