|
|
|
@ -11,14 +11,14 @@ Print help / information / capabilities:<br> |
|
|
|
|
-version show version<br> |
|
|
|
|
-formats show available formats<br> |
|
|
|
|
-muxers show available muxers<br> |
|
|
|
|
-demuxers show available demuxers<br> |
|
|
|
|
-demuxers show available demuxers<br> |
|
|
|
|
-devices show available devices<br> |
|
|
|
|
-codecs show available codecs<br> |
|
|
|
|
-decoders show available decoders<br> |
|
|
|
|
-encoders show available encoders<br> |
|
|
|
|
-bsfs show available bit stream filters<br> |
|
|
|
|
-bsfs show available bit stream filters<br> |
|
|
|
|
-protocols show available protocols<br> |
|
|
|
|
-filters show available filters<br> |
|
|
|
|
-filters show available filters<br> |
|
|
|
|
-pix_fmts show available pixel formats<br> |
|
|
|
|
-sample_fmts show available audio sample formats<br> |
|
|
|
|
-hwaccels show available HW acceleration methods<br> |
|
|
|
@ -184,9 +184,6 @@ ffmpeg -ss 20 -accurate_seek -t 10 -i input.mp4 -an -r 5 %3d.jpg<br> |
|
|
|
|
使用setpts设置视频速度,atempo设置音频速度:<br> |
|
|
|
|
ffmpeg -i in.mp4 -filter_complex [0:v]setpts=%.2f*PTS[v];[0:a]atempo=%.2f[a] -map [v] -map [a] out.mp4<br> |
|
|
|
|
|
|
|
|
|
### 3.12 旋转视频 |
|
|
|
|
ffmpeg -i in.mp4 -c copy -metadata:s\:v:0 rotate=90 out.mp4<br> |
|
|
|
|
|
|
|
|
|
# 二、ffplay命令行 |
|
|
|
|
ffplay主要用于播放视频,也可以播放网络流,示例如下:<br> |
|
|
|
|
ffplay -i beyond.mp4<br> |
|
|
|
|