On Tue, Nov 19, 2019 at 22:45:44 -0600, Steven Kan wrote: > First time poster, so please be kind if I ask anything stupid!
Not at all! > I have a live BeeCam feed on YouTube: > https://www.youtube.com/channel/UCE0jx2Z6qbc5Co8x8Kyisag/live > <https://www.youtube.com/channel/UCE0jx2Z6qbc5Co8x8Kyisag/live> Cure mice, if I may say so. (You're actually trying to show bees, right? I caught a glimpse of a mouse though.) > The -t and playlist.txt are because my camera lacks and audio feed, > and YT requires an audio stream, so I have a collection of > royalty-free mp3s in the playlist, and I’m wrapping this command in a > loop. In my experience, you can also provide an empty audio stream. It only needs to be of a certain rate, and stereo, IIRC. But your solution seems fine. > What I want to do is add some captions to the video as soft > subtitles, e.g. my location, the present temperature, and the weather > forecast. I don’t have enough CPU on the Pi to burn these into the > video stream. > > Is this possible in ffmpeg and with YouTube’s “stream now” feature? Check this page: https://support.google.com/youtube/answer/3068031?hl=en YouTube currently only accepts FLV streams, and subtitles only as EIA 608/708 captions. As far as I can tell, ffmpeg is currently not capable of creating or embedding these captions. There's an enhancement request for muxing support: https://trac.ffmpeg.org/ticket/1778#comment:10 > Subtitle codec 'ass' for stream 2 is not compatible with FLV ffmpeg's FLV muxer only accepts "id_text" ("Raw text subtitle") subs, whatever that is. I see some indications that Open Broadcast Encoder can create 608 captions, but I haven't found more info. Hope this helps, Moritz _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
