How to grab a single image from RTSP stream using FFMPEG

Question

I have seen several other related questions but they all seem to be related to grabbing a still shot every X number of seconds. How can I grab 1 image when the command is run.

I was trying

ffmpeg -y -i rtsp://admin:[email protected]:554/live -f image2 -updatefirst 1 do.jpg

Answer 1

Try

ffmpeg -y -i rtsp://admin:[email protected]:554/live -vframes 1 do.jpg

Answer 2

I've been using variations to use my Ubiquiti cameras to give me a Weather Underground JPG.

The tcp transport addition fixed everything. The modified command follows.

E $FFMPEG -y -loglevel fatal -rtsp_transport tcp -i $URL1 -frames:v 2 -r 1 -s 320x240 $TMPFILE

Answer 3

My take on this command, but its not perfect, about 20% of the time I get a corrupted (as in incomplete, or glitchy) image over a bad link:

avconv -rtsp_transport tcp -y -i rtsp://user:[email protected]:554/live -vframes 1 do.jpg