#7315 closed defect (invalid)
Audio Tempo demo range inaccurate
Reported by: | Matt McManis | Owned by: | |
---|---|---|---|
Priority: | normal | Component: | undetermined |
Version: | git-master | Keywords: | |
Cc: | Blocked By: | ||
Blocking: | Reproduced by developer: | no | |
Analyzed by developer: | no |
Description
On the Wiki, atempo
Filter states:
https://ffmpeg.org/ffmpeg-filters.html#atempo
To speed up audio to 300% tempo: atempo=3
Though available Range is only 0.5 - 2
.
Error initializing filter 'atempo' with args '3'
Only daisy-chaining works for above 200%:
-af "atempo=sqrt(3),atempo=sqrt(3)"
Change History (3)
follow-up: 3 comment:1 by , 6 years ago
Component: | wiki → undetermined |
---|---|
Keywords: | tempo afilter filter audio removed |
Resolution: | → invalid |
Status: | new → closed |
comment:2 by , 6 years ago
I think it's time ffmpeg.org hosted docs for each minor release in addition to master branch with a prominent notice on top of each page that indicates version being referenced and links to docs for other versions.
Since docs in release branches don't get updated all that often, regeneration interval can be weekly if not longer.
comment:3 by , 6 years ago
Just to clarify: your ffmpeg
is too old. The atempo filter has recently been updated to a max value of 100. The online documentation (which is separate from the wiki) is synced to the git master branch. If you must use an old version of ffmpeg
then please refer to your local documentation, such as man ffmpeg-filters
or ffmpeg -h filter=atempo
.
Please test current FFmpeg git head before reporting issues here.