Video ffmpeg从H.264(高4:4:4配置文件)转换为H.264(主配置文件)
如何使用ffmpeg将视频从H.264(高4:4:4配置文件)转换为H.264(主配置文件) 我无法使用以下命令执行此操作:Video ffmpeg从H.264(高4:4:4配置文件)转换为H.264(主配置文件),video,ffmpeg,converter,codec,Video,Ffmpeg,Converter,Codec,如何使用ffmpeg将视频从H.264(高4:4:4配置文件)转换为H.264(主配置文件) 我无法使用以下命令执行此操作:ffmpeg-I 1/25359.mp4-profile:v main out.mp4 这将返回一个错误: ... That'd return an error: Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1/25359.mp4': Metadata: major_brand : isom minor_ve
ffmpeg-I 1/25359.mp4-profile:v main out.mp4
这将返回一个错误:
...
That'd return an error:
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1/25359.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf56.40.101
Duration: 00:00:06.08, start: 0.000000, bitrate: 1059 kb/s
Stream #0:0(und): Video: h264 (High 4:4:4 Predictive) (avc1 / 0x31637661), yuv444p, 351x297, 1057 kb/s, 12.50 fps, 12.50 tbr, 12800 tbn, 25 tbc (default)
Metadata:
handler_name : VideoHandler
No pixel format specified, yuv444p for H.264 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.
x264 [error]: main profile doesn't support 4:4:4
[libx264 @ 0x8fa9640] Error setting profile main.
[libx264 @ 0x8fa9640] Possible profiles: baseline main high high10 high422 high444
Output #0, mp4, to '1/24545.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf56.40.101
Stream #0:0(und): Video: h264, none, q=2-31, 128 kb/s, 12.50 fps (default)
Metadata:
handler_name : VideoHandler
encoder : Lavc56.60.100 libx264
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
您的源视频具有全尺寸的色度平面-如YUV444P中后两个4s所示-并且主配置文件不支持该格式,因此您必须选择像YUV4:2:0这样的像素格式
ffmpeg -i 1/25359.mp4 -vf "scale=2*trunc(iw/2):-2,setsar=1" -profile:v main -pix_fmt yuv420p out.mp4
前一个答案是正确的,但我认为下面的答案正是提问者想要的
ffmpeg -i 1/25359.mp4 -profile:v main -pix_fmt yuv420p out.mp4
:表示要编码视频的模式,有一些选项-profile:v
:yuv420p适用于旧视频-pix_fmt