[FFmpeg-user] How to output a single image (any web-viewable format) as a stream over ffserver?

[Cory J. Geesaman]

Michael,
	By send back to server I mean sending the ffmpeg output to an ffserver for streaming.

-----Original Message-----
From: ffmpeg-user-bounces at ffmpeg.org [mailto:ffmpeg-user-bounces at ffmpeg.org] On Behalf Of Michael Ludwig
Sent: Tuesday, March 26, 2013 8:36 AM
To: FFmpeg user questions
Subject: Re: [FFmpeg-user] How to output a single image (any web-viewable format) as a stream over ffserver?

Cory J. Geesaman schrieb am 19.03.2013 um 11:03 (-0400):
> Does anyone know how to configure ffmpeg to read from a live streaming 
> mpeg1video and send snapshots at 29.97FPS back to the ffserver for 
> distribution as single images (so the frames update along with the 
> polling rate)?

You can get single images like this (5 QCIF frames per second for 3 s):

ffmpeg -i in.mpg -t 00:00:03 -r 5 -s qcif pic%06d.bmp

Without -s and -r options, it looks like it's using the input size and frame rate.

It does work with a stream as input. I tested using this URL:

rtsp://daserste.edges.wowza.gl-systemhaus.de/live/mp4:daserste_int_320

You need to allow ffmpeg to open a port on your computer.

This particular stream will not always show live images.
This is h264 (Baseline), but why would it not work with mpeg1video?

I don't understand the part about "sending snapshots back to the server". Sounds like file copy across a network to me, is that what you mean? You could dump the images to a network share (SMB, NFS).

Maybe I'm completely off the mark again … :)

Michael
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