[FFmpeg-devel] [PATCH] avfilter/vf_tile: add queue option

[Dave Rice]

> On Nov 19, 2017, at 2:19 PM, Nicolas George <george at nsup.org> wrote:
> 
> Paul B Mahol (2017-11-19):
>> So what you propose?
> 
> I do not know. It is your patch, and I am not even sure I understood
> your explanation correctly.

IMHO, ‘queue' is a good name for what it does. Perhaps an additional example would help demonstrate the option better. For example `ffplay -f lavfi -i testsrc=r=1 -vf tile=1x8:overlap=7:queue=1` will display 8 adjoining frames of the testsrc. Without `queue=1` in this example, the output will be stalled for 8 seconds before displaying, whereas with `queue=1` there will be an output frame for each input frame (the first frame of the output simply showing the first frame of the input plus seven empty spaces).

Suggestion:

@item
Produce a filmstrip animation from frame @code{n-7} to @code{n}:
@example
ffmpeg -i file.avi -vf 'tile=1x8:overlap=7:queue=1' filmstrip.mkv
@end example

Dave Rice