I can get good results on both luma and chroma and ive already done 100 vids like this.
The actual videos are very basic just a black background with with yellow and purple karaoke words. there are no other black colours that will be affected by chroma keying. in this case luma keying does a good job but its not specific and if i was to try to batch the whole job the chroma key looks to be a better option.
My main problem is not the video editing i can get the videos the way i want them but it is the amount of work i have to do.
luma keying/chroma keying 6000 vids is alot of work so i thought that maybe batching a job would be best if it is possible? as they say we be able to get computers to work for us as opposed to working for them