garret/aegisub-scripts
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aegisub-scripts
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use -ss and -to "properly" 

this way just seeks to the bit you need and _then_
extracts it, instead of decoding everything and
chucking away the bits we didn't ask for.
massive performance increase, should've rtfm'd
earlier
This commit is contained in:
garret 2021-12-15 19:45:50 +00:00
parent 472fc5337d
commit 37de70000e
1 changed files with 2 additions and 2 deletions
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4
macros/audio-clipper.lua
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@ -60,10 +60,10 @@ end
function extract_audio(in_path, start_time, end_time, out_path, name, extension, copy)
if copy == true then
os.execute('ffmpeg -i "'..in_path..'" -codec copy -vn -ss '..start_time..'ms -to '..end_time..'ms "'..out_path..name..'.'..extension..'" -y')
os.execute('ffmpeg -ss '..start_time..'ms -to '..end_time..'ms -i "'..in_path..'" -codec copy -vn "'..out_path..name..'.'..extension..'" -y')
-- takes the video as input, copies the streams, but doesn't include video. sets it to start at the start of the selection, and end at the end of it. outputs to our chosen out path with our chosen name and extension. overwrites anything with the same name.
elseif copy == false then
os.execute('ffmpeg -i "'..in_path..'" -vn -ss '..start_time..'ms -to '..end_time..'ms "'..out_path..name..'.'..extension..'" -y')
os.execute('ffmpeg -ss '..start_time..'ms -to '..end_time..'ms -i "'..in_path..'" -vn "'..out_path..name..'.'..extension..'" -y')
-- same as above, but doesn't copy the stream (transcodes to flac)
end
end