ffmpeg img to video = Could find no file with path

To match all jpg files in /tmp/stream use:

ffmpeg -framerate 25 -pattern_type glob -i '*.jpg'

For more specificity use additional glob patterns. For example, if you only want images from 2017-11-08 to 2017-11-10:

ffmpeg -framerate 25 -pattern_type glob -i '/tmp/stream/2017_11_{08,09,10}*.jpg'

For more info on glob patterns see man 7 glob.