Changes between Version 5 and Version 6 of Map

Timestamp:

Dec 30, 2015, 12:20:30 PM (11 years ago)

Author:

Roger Pack

Comment:

more examples

Map

@@ -140 +140 @@
 - mark just the video streams to be re-encoded (using "-c:v mpeg2video")
 - write the output file 'output.mkv'
+
+== Example 5 ==
+You can use the "-map" command in creating multiple output files, ex:
+{{{
+ffmpeg -i input.mkv -map 0:1 -map 0:2 audios_only.mkv -map 0:0 video_only.mkv
+}}}
+
+The default is to map the "highest quality video" and "highest quality audio" to each output file (basically reuses it for each output), see also [[Creating multiple outputs]].
+
+== Example 6 ==
+You can use the named output of a filtergraph as a mapping parameter, ex:
+{{{
+ffmpeg -i INPUT -filter_complex "[0] scale=100x100[smaller_sized]"  -map "[smaller_sized]" out.mp4
+}}}
+which (in our example) is the same as specifying the stream more precisely, and equivalent to this
+{{{
+ffmpeg -i INPUT -filter_complex "[0:0] scale=100x100[smaller_sized]"  -map "[smaller_sized]" out.mp4
+}}}
+
+== Example 7 ==
+
+There are stream selection shortcuts you can also use like "0:v"
+{{{
+ffmpeg -i input -map 0:v -map 0:a output.mkv # chooses video and audio from input 0
+}}}
+See [http://ffmpeg.org/ffmpeg.html#Stream-specifiers stream specifiers] for details.