可能是增加比特率和分辨率。
我在我的配置文件中使用了以下参数,用于 HTML5 上的 webm,没有视频
<Stream test1.webm> # Output stream URL definition
Feed feed1.ffm # Feed from which to receive video
Format webm
# Audio settings
#AudioCodec vorbis
#AudioBitRate 64 # Audio bitrate
NoAudio
# Video settings
VideoCodec libvpx
VideoBufferSize 4
#VideoCodec libx264
VideoSize 720x576 # Video resolution
VideoGopSize 2
#VideoIntraOnly
VideoFrameRate 25 # Video FPS
AVOptionVideo flags +global_header
AVOptionVideo quality realtime
AVOptionVideo min-q 2
AVOptionVideo max-q 56
AVOptionVideo target-bitrate 1000
AVOptionVideo undershoot-pct 90
AVOptionVideo buf-sz 60
AVOptionVideo buf-initial-sz 4
AVOptionVideo buf-optimal-sz 50
AVOptionVideo kf-max-dist 999999
AVOptionVideo deadline realtime
AVOptionVideo passes 1
PreRoll 0
StartSendOnKey
VideoBitRate 1000 # Video bitrate
</Stream>