[FFmpeg-trac] #2641(avfilter:new): Support trailing ; in filter_complex expression
FFmpeg
trac at avcodec.org
Wed Jun 5 01:57:39 CEST 2013
#2641: Support trailing ; in filter_complex expression
-------------------------------------+-------------------------------------
Reporter: jdolan | Type:
Status: new | enhancement
Component: avfilter | Priority: normal
Keywords: | Version: 1.2.1
filter_complex | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug:
It'd be nice if the complex filter parser didn't bomb out with a cryptic
error message when a user terminates their filter chains with a trailing
;.
How to reproduce:
{{{
% ffmpeg -i "$1" -i "$2" -i "$3" -i "$4" -filter_complex "
[0:0] pad='max(240\,iw):max(180\,ih):0:0', scale='240:180',
pad='480:180:0:0' [left_video];
[1:0] pad='max(240\,iw):max(180\,ih):0:0', scale='240:180',
pad='480:180:240:0' [right_video];
[left_video] [right_video] overlay;
...
[0:1] [1:1] amerge;
" -acodec libfaac -ac 2 -vcodec libx264 -r 15 "$5"
...
[AVFilterGraph @ 0x7fb1cac2c1a0] No such filter: ''
}}}
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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2641>
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