「Ffmpeg」の版間の差分

2025年9月28日 (日) 01:12時点における版

http://offliberty.io/

For FFmpeg with Constant Bitrate Encoding (CBR):

ffmpeg -i video.mp4 -vn \
       -acodec libmp3lame -ac 2 -ab 160k -ar 48000 \
        audio.mp3

or if you want to use Variable Bitrate Encoding (VBR):

ffmpeg -i video.mp4 -vn \
       -acodec libmp3lame -ac 2 -qscale:a 4 -ar 48000 \
        audio.mp3

The VBR example has a target bitrate of 165 Kbit/s with a bitrate range of 140...185.


python3 -m pip install -U yt-dlp

yt-dlp -F --progress "https://www.youtube.com/watch?v=xxxxxxxxx"

yt-dlp -f 636+251 -N10 --progress "https://www.youtube.com/watch?v=xxxxxxxxx"

@@ 1行目: / 1行目: @@
 * http://offliberty.io/
-<source code=bash>
+<syntaxhighlight lang="bash" line>
@@ 27行目: / 28行目: @@
 yt-dlp -f 636+251 -N10 --progress "https://www.youtube.com/watch?v=xxxxxxxxx"
-</source>
+</syntaxhighlight>