Changes between Version 8 and Version 9 of Creating multiple outputs

Timestamp:

02/10/2013 12:26:38 AM (4 months ago)

Author:

evilsoup

Comment:

tee psuedo-muxer

Creating multiple outputs

@@ -40 +40 @@
 But, what if you want to have duplicate outputs of your encoding? For example, when you are streaming a live audio/video and want to save a duplicate of that stream into the file at the same time.  You don't want to encode twice, that wastes cpu.
 
-FFmpeg can also do this, using 2 piped processes, where the first process is used to encode the stream(s) and second process is used to duplicate that to several outputs.
+== Tee psuedo-muxer ==
+
+The tee psuedo-muxer was added to ffmpeg on 2013-02-03, and allows you to duplicate the output to multiple files, on a single instance of ffmpeg.
+
+{{{
+ffmpeg -i input.file -c:v libx264 -c:a mp2 \
+-f tee "output.mkv|[f=mpegts]udp://10.0.1.255:1234/"
+}}}
+
+The above outputs an MKV file, and a UDP stream. Streams are separated by the `|` symbol. Options can be applied to an individual output: `[f=mpegts]` is equivalent to `-f mpegts` in a normal ffmpeg command-line. Multiple options can be separated with a `:`, which means that any `:` have to be escaped (so use `\:`).
+
+== Piped processes ==
+
+Older versions of ffmpeg can also do this, using 2 piped processes, where the first process is used to encode the stream(s) and second process is used to duplicate that to several outputs.
 {{{
 ffmpeg -i input1 -i input2 -acodec .. -vcodec .. -f mpegts - | \