On 05-12-2019 09:00 pm, John Dexter wrote:
On Thu, 5 Dec 2019 at 15:23, Gyan <ffm...@gyani.pro> wrote:

On 05-12-2019 08:44 pm, John Dexter wrote:
Bizarrely am struggling to find a thorough documentation of -i and
on examples online. Can anyone point me where in the online documentation
this is documented (not a man page) please? I know it supports
patterns e.g. for timelapse but I cannot find a reference.
All -i does is specify the input URL. Which options are applicable for
an input is determined by
the input format / codecs discovered by ffmpeg after probing the input.

What specifically are you trying to do?

Time-lapse from a whole bunch of images. I've found examples online of
syntax I can use but no explanation exactly how this is working and how
flexible this is.
e.g. -i image%8d
I'd like to know how I can specify which files are used and in which order.
Maybe my question is where is the input URL functionality documented?

For a sequence of images, the input URL serves as a pattern which is interpreted by the image sequence demuxer (image2). See ffmpeg -h demuxer=image2 to see its options, or on the web at http://ffmpeg.org/ffmpeg-formats.html#image2-1
On linux, you should also have access to globbing support.

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