Hi, I am new to the list and also to ffmpeg so this is likely to be a naive
question.
My question concerns the command line version of ffmpeg. I am developing a
cross-platform app in Adobe AIR and the problem I am trying to solve is being
able to seek to an arbitrary point in a video file without having to render the
video with a keyframe every frame. I am able to launch ffmpeg in the background
and pipe a stream of an existing video file to my client app. Here are my
questions:
1. Am I wrong in my understanding that ffmpeg will seek to a requested time,
rendering from the nearest keyframe?
2. Using Actionscript I can successfully launch ffmpeg with:
ffmpeg -re -i test.mp4 -c:a copy -c:v copy -f flv -
and subscribe to the stream and display it. I am also able to seek using:
ffmpeg -ss 300 -re -i test.mp4 -c:a copy -c:v copy -f flv -
What I am not able to do is to communicate with or control ffmpeg through stdin
once it has started streaming, either to tell it to seek or to pause the
stream. I can’t tell if my code is bad or if I misunderstanding the ffmpeg
command line tool. Is the tool only designed for a "set up/run/exit” usage
scenario.
I can provide more details if needed.
Thanks,
–Roy
_______________________________________________
ffmpeg-user mailing list
[email protected]
http://ffmpeg.org/mailman/listinfo/ffmpeg-user
To unsubscribe, visit link above, or email
[email protected] with subject "unsubscribe".
