highperfocused/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Changelog: update ffmpeg/avconv incompatibility list.

Browse Source
This commit is contained in:
Anton Khirnov
2011-11-06 14:05:46 +01:00
parent 059fb8c884
commit c4302a3914
1 changed files with 59 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

83
Changelog
View File

@@ -9,37 +9,72 @@ version <next>:
- ffmpeg deprecated, added avconv, which is almost the same for now, except - ffmpeg deprecated, added avconv, which is almost the same for now, except
for a few incompatible changes in the options, which will hopefully make them for a few incompatible changes in the options, which will hopefully make them
easier to use. The changes are: easier to use. The changes are:
* -newvideo/-newaudio/-newsubtitle are gone, because they were redundant and * The options placement is now strictly enforced! While in theory the
worked in a nonstandard way. -map is sufficient to add streams to output options for ffmpeg should be given in [input options] -i INPUT [output
files. options] OUTPUT order, in practice it was possible to give output options
* -map now has slightly different and more powerful syntax. before the -i and it mostly worked. Except when it didn't - the behavior was
+ it's possible to specify stream type. E.g. -map 0:a:2 means 'third a bit inconsistent. In avconv, it is not possible to mix input and output
audio stream'. options. All non-global options are reset after an input or output filename.
+ omitting the stream index now maps all the streams of the given * All per-file options are now truly per-file - they apply only to the next
type, not just the first. E.g. -map 0:s maps all the subtitle streams. input or output file and specifying different values for different files
+ colons (':') are used to separate file index/stream type/stream will now work properly (notably -ss and -t options).
index. Comma (',') is used to separate the sync stream. This is done * All per-stream options are now truly per-stream - it is possible to
for consistency with other options. specify which stream(s) should a given option apply to. See the Stream
+ since -map can now match multiple streams, negative mappings were 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
introduced. Negative mappings disable some streams from an already introduced. Negative mappings disable some streams from an already
defined map. E.g. '-map 0 -map -0:a:1' means 'map everything except defined map. E.g. '-map 0 -map -0:a:1' means 'create output streams for
for the second audio stream'. all the stream in the first input file, except for the second audio
* -vcodec/-acodec/-scodec are replaced by -c (or -codec), which stream'.
allows to precisely specify target stream(s) consistently with other * There is a new option -c (or -codec) for choosing the decoder/encoder to
options. E.g. '-c:v libx264' sets the codec for all video streams, use, which allows to precisely specify target stream(s) consistently with
'-c:a:0 libvorbis' sets the codec for the first audio stream and '-c other options. E.g. -c:v lib264 sets the codec for all video streams, -c:a:0
copy' copies all the streams. libvorbis sets the codec for the first audio stream and -c copy copies all
the streams without reencoding. Old -vcodec/-acodec/-scodec options are now
aliases to -c:v/a/s
* It is now possible to precisely specify which stream should an AVOption * It is now possible to precisely specify which stream should an AVOption
apply to. See the manual for detailed explanation. apply to. E.g. -b:v:0 2M sets the bitrate for the first video stream, while
-b:a 128k sets the bitrate for all audio streams. Note that the old -ab 128k
syntax is deprecated and will stop working soon.
* -map_chapters now takes only an input file index and applies to the next * -map_chapters now takes only an input file index and applies to the next
output file. This is consistent with how all the other options work. output file. This is consistent with how all the other options work.
* -map_metadata now takes only an input metadata specifier and applies to * -map_metadata now takes only an input metadata specifier and applies to
the next output file. Output metadata specifier is now part of the option the next output file. Output metadata specifier is now part of the option
name, similarly to the AVOptions/map/codec feature above. name, similarly to the AVOptions/map/codec feature above.
* Presets in avconv are disabled, because only libx264 used them and * -metadata can now be used to set metadata on streams and chapters, e.g.
presets for libx264 can now be specified using a private option -metadata:s:1 language=eng sets the language of the first stream to 'eng'.
'-preset <presetname>'. This made -vlang/-alang/-slang options redundant, so they were removed.
* -intra option was removed, it's equivalent to -g 0. * -qscale option now uses stream specifiers and applies to all streams, not
just video. I.e. plain -qscale number would now apply to all streams. To get
the old behavior, use -qscale:v. Also there is now a shortcut -q for -qscale
and -aq is now an alias for -q:a.
* -vbsf/-absf/-sbsf options were removed and replaced by a -bsf option which
uses stream specifiers. Use -bsf:v/a/s instead of the old options.
* -itsscale option now uses stream specifiers, so its argument is only the
scale parameter.
* -intra option was removed, use -g 0 for the same effect.
* -psnr option was removed, use -flags +psnr for the same effect.
* -vf option is now an alias to the new -filter option, which uses stream specifiers.
* -vframes/-aframes/-dframes options are now aliases to the new -frames option.
* -vtag/-atag/-stag options are now aliases to the new -tag option.
- XMV demuxer - XMV demuxer
- Windows Media Image decoder - Windows Media Image decoder
- LATM muxer/demuxer - LATM muxer/demuxer