Hello -
Have a number of still pictures (jpg) that I would like to make into a
slideshow.
Using information at < https://trac.ffmpeg.org/wiki/Slideshow >,
created a file "input.txt" with the format:
first_image.jpg
duration 5
second_image.jpg
duration 5
....
last_image.jpg
duration 5
last_image.jpg
then ran the command:
ffmpeg -f concat -i input.txt -vsync vfr -pix_fmt yuv420p test.mp4
This did work. "test.mp4" is a video with all the images, each
displaying for about 5 seconds. But ffmpeg gave the following
complaint for each image:
[swscaler @ 0x9d13040] deprecated pixel format used, make sure you did
set range correctly
Tried the command without "-pix_fmt" ; gave same result
Tried the command without either "-vsync" or "-pix_ftm"; also gave
same result, but processing was much slower
Then I converted all the jpg images to png and ran the command again.
Same result.
Questions: what is a "deprecated pixel format"? What does it mean to
"set range" ?
What negative effects, if any, might be expected from these warnings?
thanks for any information -
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