Changes between Version 18 and Version 19 of Creating multiple outputs

Timestamp:

Sep 9, 2016, 12:32:36 AM (10 years ago)

Author:

llogan

Comment:

add a tee select example

Creating multiple outputs

@@ -77 +77 @@
 The [https://ffmpeg.org/ffmpeg-formats.html#tee tee pseudo-muxer] was added to `ffmpeg` on 2013-02-03, and allows you to duplicate the output to multiple files with a single instance of `ffmpeg`.
 
+The example below 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 `\:`).
+
 {{{
 ffmpeg -i input.file -c:v libx264 -c:a mp2 \
@@ -82 +84 @@
 }}}
 
-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 `\:`).
+If you want to choose specific streams then use the `stream` option. In this next example there are various video streams being used by various outputs, but they will all use the same audio stream. Otherwise you would have to unnecessarily re-encode the same audio multiple times.
+
+{{{
+ffmpeg -i input -filter_complex \
+"[0:v]split=2[s0][s1]; \
+ [s0]negate[v0]; \
+ [s1]vflip[v1]" \
+-map "[v0]" -map "[v1]" -map 0:a -c:v libx264 -c:a aac -f tee \
+"[select=\'v:0,a\']local0.mkv| \
+ [select=\'v:0,a\':f=flv]rtmp://server0/app/instance/playpath| \
+ [select=\'v:1,a\']local1.mkv| \
+ [select=\'v:1,a\':f=flv]rtmp://server1/app/instance/playpath"
+}}}
+
+
 
 === Piped processes ===