![]() ![]() Or -codec: copy would copy all the streams without reencoding. the stream specifier in -b:a 128k matches all audioĪn empty stream specifier matches all streams, for example -codec copy Would select the ac3 codec for the second audio stream.Ī stream specifier can match several stream, the option is then applied to all codec:a:1 ac3 option containsĪ:1 stream specifier, which matches the second audio stream. Stream specifiersĪre used to precisely specify which stream(s) does a given option belong to.Ī stream specifier is a string generally appended to the option name and Some options are applied per-stream, e.g. With "no" the option name, for example using "-nofoo" in theĬommand line will set to false the boolean option with name "foo". Options which do not take arguments are boolean options, and set theĬorresponding value to true. This allows using forĮxample ’KB’, ’MiB’, ’G’ and ’B’ as number postfix. The ’B’ postfix multiplies the value by 8, and can beĪppended after a unit prefix or used alone. Which are based on powers of 1024 instead of powers of 1000. If ’i’ is appended after the prefix, binary prefixes are used, SI unit prefixes, for example ’K’, ’M’, ’G’. It is mostly used as a testbed for theĪll the numerical options, if not specified otherwise, accept in inputĪ string representing a number, which may contain one of the Libavg video stream portable#
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |