- * -newvideo/-newaudio/-newsubtitle are gone, because they were redundant and
- worked in a nonstandard way. -map is sufficient to add streams to output
- files.
- * -map now has slightly different and more powerful syntax.
- + it's possible to specify stream type. E.g. -map 0:a:2 means 'third
- audio stream'.
- + omitting the stream index now maps all the streams of the given
- type, not just the first. E.g. -map 0:s maps all the subtitle streams.
- + colons (':') are used to separate file index/stream type/stream
- index. Comma (',') is used to separate the sync stream. This is done
- for consistency with other options.
- + since -map can now match multiple streams, negative mappings were
+ * The options placement is now strictly enforced! While in theory the
+ options for ffmpeg should be given in [input options] -i INPUT [output
+ options] OUTPUT order, in practice it was possible to give output options
+ before the -i and it mostly worked. Except when it didn't - the behavior was
+ a bit inconsistent. In avconv, it is not possible to mix input and output
+ options. All non-global options are reset after an input or output filename.
+ * All per-file options are now truly per-file - they apply only to the next
+ input or output file and specifying different values for different files
+ will now work properly (notably -ss and -t options).
+ * All per-stream options are now truly per-stream - it is possible to
+ specify which stream(s) should a given option apply to. See the Stream
+ specifiers section in the avconv manual for details.
+ * In ffmpeg some options (like -newvideo/-newaudio/...) are irregular in the
+ sense that they're specified after the output filename instead of before,
+ like all other options. In avconv this irregularity is removed, all options
+ apply to the next input or output file.
+ * -newvideo/-newaudio/-newsubtitle options were removed. Not only were they
+ irregular and highly confusing, they were also redundant. In avconv the -map
+ option will create new streams in the output file and map input streams to
+ them. E.g. avconv -i INPUT -map 0 OUTPUT will create an output stream for
+ each stream in the first input file.
+ * The -map option now has slightly different and more powerful syntax:
+ + Colons (':') are used to separate file index/stream type/stream index
+ instead of dots. Comma (',') is used to separate the sync stream instead
+ of colon.. This is done for consistency with other options.
+ + It's possible to specify stream type. E.g. -map 0:a:2 creates an
+ output stream from the third input audio stream.
+ + Omitting the stream index now maps all the streams of the given type,
+ not just the first. E.g. -map 0:s creates output streams for all the
+ subtitle streams in the first input file.
+ + Since -map can now match multiple streams, negative mappings were
projects / ffmpeg / blobdiff