「Ffmpeg」の版間の差分

2025年6月7日 (土) 23:42時点における版

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: @@
-<pre>
+<source code=bash>
@@ 20行目: / 20行目: @@
 python3 -m pip install -U yt-dlp
 yt-dlp -F --progress "https://www.youtube.com/watch?v=xxxxxxxxx"
-</pre>
+yt-dlp -f 636+251 -N10 --progress "https://www.youtube.com/watch?v=xxxxxxxxx"
+</source>