// check video params
if (videoStream[ 'codec_name' ] !== 'h264') return false
+ if (videoStream[ 'pix_fmt' ] !== 'yuv420p') return false
if (fps < VIDEO_TRANSCODING_FPS.MIN || fps > VIDEO_TRANSCODING_FPS.MAX) return false
if (bitRate > getMaxBitrate(resolution.videoFileResolution, fps, VIDEO_TRANSCODING_FPS)) return false