The EU and FCC have passed rules stating television programs must include closed captions and subtitling combined with multi-region distribution. There is no way around it -- closed captioning (CC) and subtitling are now standard elements of the content delivery process.
There are several options when it comes to the subtitling element of the file. When the AV content is ingested, either the subtitles remains a raw VANC that is then wrapped in an MXF S436M track before it can progress further through the workflow, or the subtitles become a sidecar text file (eg, *.SCC or *.MCC)
The EVS OpenCubeHD/SD server provides many options at the ingest stage for dealing with subtitles and CC. Users can choose to keep ANC data – along with subtitles and closed caption - in the MXF file as a S436M track, or alternatively a *.SCC or *.MCC sidecar. file is generated alongside the MXF AV or MOV files and follows it through the production process.
Once a file has been ingested, at each step along the workflow, users will need to check that the subtitle information is synchronized with the video or burned into the frame. EVS' XFReader provides a straightforward and efficient way to do this by showing which channel is active within the 608, the 708 or OP-47 data steam. Enhanced with SDI capabilities, the closed caption data from *.SCC or *.MCC files is reinserted in the form of VANC data at the point when the MXF files is played back over baseband.
Next is converting – the XFConverter makes it simple by enabling users to bridge the gap between an MXF 436M VANC track and *.SCC files, reliably and automatically at each step of your workflow.
When it comes to outputting the finished content – whether to a playout server, to smart devices, or for online streaming, VoD or DTT service – the accurate management of your subtitles and closed captions along with your MXF production files will make the whole process a lot less complicated.