Elastic Transcoder - Error In X-TIMESTAMP-MAP Output

When you use AWS Elastic Transcoder and add a caption file, you'll get a line like this in the m3u8:

X-TIMESTAMP-MAP=MPEGTS:0, LOCAL:00:00:00.000

Note the space in front of LOCAL - video.js and other players can't deal with this and do not display the captions. Editing the file manually to remove the space, ex:

X-TIMESTAMP-MAP=MPEGTS:0,LOCAL:00:00:00.000

Makes the captions work. Please update the X-TIMESTAMP-MAP routine to correctly remove the space or add an option to remove it in the transcode process.