[FFmpeg-user] Live Stream of Video/Audio + Subtitles
Shilpi Gupta - NOAA Affiliate
shilpi.gupta at noaa.gov
Tue Jan 29 22:29:53 CET 2013
In my code, I would like to read in a live broadcast of video and audio,
and then multiplex that with subtitle data that is generated live. This
combo would then be sent to a server (not necessarily ffserver, but that is
an option), and a client would subscribe to that stream and decode it and
extract the subtitle stream. Ideally, the incoming subtitle format would
be MPEG 4 Timed Text. In general, I would like to associate a live
video/audio stream with a live stream of text data, both of which can be
decoded in parallel by a client.
--Is it possible to multiplex live video/audio streams with live subtitle
stream? Do you have any leads to such scenarios?
--It seems like ffserver can handle subtitle streams, based on the
documentation. Is this true? Does ffserver support multiple types of
subtitle formats, like srt and ttxt?
--ffmpeg defines video/audio/subtitle/attachment/data streams. What
exactly is meant by a data stream? Could this be any arbitrary stream,
like a text stream?
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