[FFmpeg-user] Multiple Glob Inputs
jtanman at gmail.com
Tue Oct 15 21:18:43 EEST 2019
> A concat filter exists, but I suspect the concat demuxer (that works
> differently and does not use glob) is what you need.
Ah so basically you're saying you don't think there is a way to concatenate
with glob, and I should just do it with numbering? I was able to run a
shell script to make a list of all images used, something like this.
# with a bash for loop
for f in ./Time\ Lapse\ 11/*.JPG; do echo "file '$f'" >> mylist.txt; done
for f in ./Burst\ Sequence\ 5/*.JPG; do echo "file '$f'" >> mylist.txt; done
for f in ./Burst\ Sequence\ 6/*.JPG; do echo "file '$f'" >> mylist.txt; done
But I was wondering if there was also a way to add start number to a file
list. I was hoping something like this might be possible?
ffmpeg -f concat -safe 0 -i mylist.txt \
-c:v libx264 -pix_fmt yuv420p -r 24 -crf 23 -preset fast -y output.mp4
where mylist.txt looks like
-start_number 0152396 file './Time Lapse 11/G%07d.JPG'
-start_number 0162603 file './Burst Sequence 5/G%07d.JPG'
-start_number 0172625 file './Burst Sequence 6/G%07d.JPG'
This obviously hasn't worked yet, and just writing all the filenames to
mylist.txt does work, but I was just wondering for curiosity's sake. Thank
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