More details om transcoding options.HEADmaster

1 files changed, 21 insertions, 2 deletions

diff --git a/ADMIN.md b/ADMIN.md
index 4f0edcc..8e7e080 100644
--- a/ADMIN.md
+++ b/ADMIN.md
@@ -37,11 +37,30 @@ Move the source file(s) to subdirectory src.
 
 Use transcoding script localvideowebencode.
 
-Simple use:
+Test if encoding work at all:
+
+	localvideowebencode --compression dirty --sample src/the-source.dv
+
+If image size is not too big, simply transcode with no options:
 
 	localvideowebencode src/the-source.dv
 
-Refined use:
+Smaller image size leads to faster download
+and less ressources needed to play.
+Best is to pick a size which is "modulus 16"
+(see localvideowebencode --help) for details),
+e,g vga or 480p:
+
+	localvideowebencode --size 480p src/the-source.dv
+
+Some sources use sub-optimal refresh rate
+(variable or very slow/fast).
+Especially too fast rate is best to reduce to 20 or 30.
+Here an example of setting both size and rate together:
+
+	localvideowebencode --profile 480p25 src/the-source.dv
+
+More complex example:
 
 	localvideowebencode --video talkinghead --profile 480p25 --audio speech src/the-source.dv