On 12/22/19 10:03 AM, Carl Eugen Hoyos wrote:
Am Sa., 21. Dez. 2019 um 22:04 Uhr schrieb Weydson Lima <[email protected]>:
I'm trying to create a live video stream from a single image. Once this
image gets overwritten, a new video frame would then be created
otherwise the last image would be used as the current video frame.
Is there a way to accomplish that using the ffmpeg command line? I was
thinking about something like this pseudo code:
cat -forever source.jpg | ffmpeg -i pipe:0 udp://127.0.0.1:3333?listen
Did you test the loop option of the image2 demuxer and its friends?
Thanks. I looked at the loop option in the documentation before posting
to the mailing list but wasn't sure if it was the right approach. I've
tried the following but am unable to update the video once the source
file changes:
ffmpeg -f image2 -loop 1 -i source.png -f mpegts
"udp://127.0.0.1:3333?listen"
I tried different approaches to update source.png:
cat new.png > source.png
cp new.png source.png
mv -f new.png source.png
Apparently ffmpeg isn't refreshing source.png?
Someone from IRC suggested that:
(while :; do cat source.png; sleep 1; done) | ffmpeg -f image2pipe -i -
-f mpegts "udp://127.0.0.1:3333?listen"
but ffmpeg complained that the output file is empty.
I'm not sure what else to try now.
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