web: set config.videoQuality.maxBitratesVideo to null if no bitrates are specified

Fixes: #1318

web/rootfs/defaults/settings-config.js

@@ -387,14 +387,17 @@ config.videoQuality.preferredCodec = '{{ .Env.VIDEOQUALITY_PREFERRED_CODEC }}';
 
 config.videoQuality.enforcePreferredCodec = {{ $VIDEOQUALITY_ENFORCE_PREFERRED_CODEC }};
 
-if (!config.videoQuality.hasOwnProperty('maxBitratesVideo')) config.videoQuality.maxBitratesVideo = {};
+if (!config.videoQuality.hasOwnProperty('maxBitratesVideo')) config.videoQuality.maxBitratesVideo = null;
 {{ if and .Env.VIDEOQUALITY_BITRATE_H264_LOW .Env.VIDEOQUALITY_BITRATE_H264_STANDARD .Env.VIDEOQUALITY_BITRATE_H264_HIGH -}}
+config.videoQuality.maxBitratesVideo = config.videoQuality.maxBitratesVideo || {}
 config.videoQuality.maxBitratesVideo.H264 = { low: {{ .Env.VIDEOQUALITY_BITRATE_H264_LOW }}, standard: {{ .Env.VIDEOQUALITY_BITRATE_H264_STANDARD }}, high: {{ .Env.VIDEOQUALITY_BITRATE_H264_HIGH }} };
 {{ end -}}
 {{ if and .Env.VIDEOQUALITY_BITRATE_VP8_LOW .Env.VIDEOQUALITY_BITRATE_VP8_STANDARD .Env.VIDEOQUALITY_BITRATE_VP8_HIGH -}}
+config.videoQuality.maxBitratesVideo = config.videoQuality.maxBitratesVideo || {}
 config.videoQuality.maxBitratesVideo.VP8 = { low: {{ .Env.VIDEOQUALITY_BITRATE_VP8_LOW }}, standard: {{ .Env.VIDEOQUALITY_BITRATE_VP8_STANDARD }}, high: {{ .Env.VIDEOQUALITY_BITRATE_VP8_HIGH }} };
 {{ end -}}
 {{ if and .Env.VIDEOQUALITY_BITRATE_VP9_LOW .Env.VIDEOQUALITY_BITRATE_VP9_STANDARD .Env.VIDEOQUALITY_BITRATE_VP9_HIGH -}}
+config.videoQuality.maxBitratesVideo = config.videoQuality.maxBitratesVideo || {}
 config.videoQuality.maxBitratesVideo.VP9 = { low: {{ .Env.VIDEOQUALITY_BITRATE_VP9_LOW }}, standard: {{ .Env.VIDEOQUALITY_BITRATE_VP9_STANDARD }}, high: {{ .Env.VIDEOQUALITY_BITRATE_VP9_HIGH }} };
 {{ end -}}