Can we use FFmpge's subtitles filter for dynamic subtitles? For example my subtitles are not coming from the original source and I don't have a srt or ASS file, I am extracting the audio from the source(live rtmp url) and sending it to Microsoft Azure to recognize it on realtime and then I am again publishing it to a rtmp push URL with subtitles but currently I am using drawtext filter which is not very flexible.
ffmpeg(rtmpSourceUrl)
.inputOptions(["-re"])
.withOption([
"-y", // Overwrite
"-vn", // No Video
"-f s16le", // format (wav)
"-acodec pcm_s16le", // codec (wav)
"-ac 1", // audio channles (1 MONO)
"-ar 16000", // 16KH
])
.output(azurePushStream)
Any help will be greatly appreciated! Thanks