-FFMpeg中未解释b标志

-FFMpeg中未解释b标志,ffmpeg,Ffmpeg,我试图通过ffmpeg将一个文件循环到两个rtp端口。运行此命令时,出现以下错误: Codec AVOption b (set bitrate (in bits/s)) specified for output file #0 (rtp://127.0.0.1:49152) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video

我试图通过ffmpeg将一个文件循环到两个rtp端口。运行此命令时,出现以下错误:

Codec AVOption b (set bitrate (in bits/s)) specified for output file #0 (rtp://127.0.0.1:49152) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of some encoder which was not actually used for any stream.
ffmpeg-y-re-stream_loop-1-i./demovideo.m4v-r 24-s 1280x720-c:v libvpx-minrate 3M-maxrate 3M-b:v 3M-c:a libopus-map 0:a:0-f rtp-c拷贝rtp://127.0.0.1:49152 -地图0:v:0-f rtp-c副本rtp://127.0.0.1:49154?pkt_size=1012


我已经指定b标志用'-b:v'表示视频。我遗漏了什么?

-f rtp
之后的
-c副本将覆盖
-c:v
-c:a
选项。将其放在当前命令中的
-c:v libvpx
之前


请参阅以了解选项放置如何生效。

-f rtp
之后的
-c副本将覆盖
-c:v
-c:a
选项。将其放在当前命令中的
-c:v libvpx
之前

有关选项放置如何生效的信息,请参见