Hello! I'm trying to make smooth streaming packages that are a bit unusual. I have several pro tools at my disposal, including Carbon Coder, Mac Captions, Digital Rapids, ffmpeg etc. I need to make several multi layer encodes with captions sourced from an scc
file. I can convert this scc file to dfxp, srt, whatever - using Mac Caption, but the final smooth streaming packages must contain ismt captions. This is doable with 30p content using Carbon. However, I need to mix Baseline profile with main profile in a single
manifest, and Carbon doesn't support this. So, I need to come up with a workflow to encode 25p using a mixture of baseline and main profile layers, with captions. I've got the video and audio down, ffmpeg is fine. I can transform mp4 to ismv / ISMA using IIS
transform manager, but I don't see a way to handle the captioning!! I'll buy whatever. Maybe Expression Pro? I'm looking at evaluating unified-streaming as their mp4 fragmenter appears to convert dfxp to ismt. Any other suggestions?? Help! Thanks :)
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