On Wed, May 08, 2019 at 07:26:16PM -0400, talkvi...@talkvideo.net wrote: > Please see this (very Short) thread for background. It is > incorporated here. > > http://ffmpeg.org/pipermail/ffmpeg-devel/2019-May/243721.html > > The drawtext Filter has a reload Option, and when I use overlay > with a PNG Image, like so: > -f image2 -loop 1 -i overlay.png > > I can manipulate the overlay by changing out the PNG File while > the ffmpeg command is running. (It works with RTMP sending to YouTube). > > I can make it "disappear" by copying a 1-pixel alpha PNG Image into > the "overlay.png" file. > > I can manipulate the displayed drawtext in real-time by changing the contents > of the > "textfile" the drawtext filter uses when the "reload" option is set. > > So far, so good. > > What about doing the same with a video. That means that the movie filter > would reload (or at least check) the file specified as input to that filter, > with each run > of the loop if a reload option was set, perhaps. ffmpeg appears to read that > file once, at inception. > > Is there currently a way to accomplish this or would one have to add that to > he code? > > Thanks. >
Answering my own question, it looks like in src_movie.c in movie_common_init() there is a call to avformat_open_input() to get the file for the first time. Something like that could be re-done in rewind_file(), to check and reload the file anew, if necessary, insted of just rewinding the existing copy in memory. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
