轉(zhuǎn)載：https://jalena.bcsytv.com/archives/1202

http://ffmpeg.org/

現(xiàn)在Html5也逐漸普及了，設(shè)備對于mp4/webm/ogv的支持也逐漸廣泛，但是Html5視頻的轉(zhuǎn)換軟件卻不是太多，這個Ffmpeg確實(shí)不錯。而且功能也強(qiáng)大。

<pre name="code" class="plain">REM “H.264 / ACC” "D:\Program Files\FFmpeg\bin\ffmpeg.exe" -y -i %1 -vcodec libx264 -vprofile high -preset slow -b:v 900k -maxrate 1200k -bufsize 1000k -vf scale=trunc(oh*a/2)*2:480 -threads 0 -acodec libvo_aacenc -b:a 128k %1.mp4REM “Standard” web video (480p at 500kbit/s): "D:\Program Files\FFmpeg\bin\ffmpeg.exe" -i %1 -vcodec libx264 -vprofile high -preset slow -b:v 500k -maxrate 500k -bufsize 1000k -vf scale=-1:480 -threads 0 -acodec libvo_aacenc -b:a 128k %1_Standard.mp4REM 360p video for older mobile phones (360p at 250kbit/s in baseline profile): "D:\Program Files\FFmpeg\bin\ffmpeg.exe" -i %1 -vcodec libx264 -vprofile baseline -preset slow -b:v 250k -maxrate 250k -bufsize 500k -vf scale=-1:360 -threads 0 -acodec libvo_aacenc -ab 96k %1_360p.mp4REM 480p video for iPads and tablets (480p at 400kbit/s in main profile): "D:\Program Files\FFmpeg\bin\ffmpeg.exe" -i %1 -vcodec libx264 -vprofile main -preset slow -b:v 400k -maxrate 400k -bufsize 800k -vf scale=-1:480 -threads 0 -acodec libvo_aacenc -ab 128k %1_480p.mp4REM High-quality SD video for archive/storage (PAL at 1Mbit/s in high profile): "D:\Program Files\FFmpeg\bin\ffmpeg.exe" -i %1 -vcodec libx264 -vprofile high -preset slower -b:v 1000k -vf scale=-1:576 -threads 0 -acodec libvo_aacenc -ab 196k %1_High.mp4REM webm (VP8 / Vorbis) "D:\Program Files\FFmpeg\bin\ffmpeg.exe" -y -i %1 -vcodec libvpx -quality good -cpu-used 5 -b:v 700k -maxrate 700k -bufsize 1000k -qmin 10 -qmax 42 -vf scale=trunc(oh*a/2)*2:480 -threads 4 -acodec libvorbis -f webm %1.webmREM ogv (Theora / Vorbis) "D:\Program Files\FFmpeg\bin\ffmpeg.exe" -i %1 -b 1500k -vcodec libtheora -acodec libvorbis -ab 160000 -g 30 -s 640x360 %1.ogv

遍歷目錄下的所有mpg文件，挨個轉(zhuǎn)換到該目錄！

1	for/r%1%%iin (*.mpg)do "D:\Program Files\FFmpeg\Convert.bat"%%i

代碼很簡單，但是很實(shí)用，如果文件格式太亂，可以使用文件列表的形式來進(jìn)行

1	for/r%1%%iin (list.txt)do "D:\Program Files\FFmpeg\Convert.bat"%%i

大概就這些了，更多方法可以查看FFmpeg的使用說明

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