[youtube]
key = ue78-1c3e-mr9g-14mz-9r4z
secure = false            ; true=rtmps, false=rtmp
bitrate = 5000             ; 视频码率(kbps)
audio_bitrate = 128              ; 音频码率(kbps)
fps = 30
gop = 60
resolution = ; 为空=不改分辨率；如 720x1280 或 1280x720
ingest = a                ; 谷歌分区 a/b/c...，留空默认 a
copy_when_safe = true             ; 源满足 h264+aac 且参数合规时尝试 -c copy