We use Maccaption at our facility. Software is easy to learn and doesnt take long to export an entire show. Only thing is if you’re capioning entire shows is Transcribing the show word for word,which is the longest part of the captioning workflow.
Try to “rar” your files. you can typically break up a large file into many smaller files and send it that way. then when your clients downloads all the “rar” files they can unzip it and the disc image will be whole again for them to burn.
Havent used the built-in recorder on ichat, but i have used conference recorder by icamm. only $15. For what its worth, its pretty good, records into a h264 file. maybe something you want to look into.. https://www.ecamm.com/mac/conferencerecorder/
Have you tried reseating the battery? sometimes it just needs to get smacked in there. But if that doesnt work, usually the X means that it cannot be charged, bring it into the apple store if you have a warranty to get a new batt. or pick up a new one.