[FFmpeg-trac] #450(documentation:open): Specify the position of -isync more precisely

[FFmpeg]

#450: Specify the position of -isync more precisely
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             Reporter:  burek        |                    Owner:  stefano
                 Type:  enhancement  |                   Status:  open
             Priority:  normal       |                Component:
              Version:  unspecified  |  documentation
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Changes (by cehoyos):

 * status:  new => open


Comment:

 Is there any difference in behaviour noticeable (or even expected) between
 {{{
 ffmpeg -f alsa -ac 1 -i hw:1 -f video4linux2 -r 15 -s qqvga -i /dev/video0
 -isync -vcodec libx264 -preset ultrafast -g 15 -crf 20 -acodec aac -strict
 experimental -ar 44100 -ab 96k -f mpegts udp://192.168.25.101:10001
 }}}
 and
 {{{
 ffmpeg -f alsa -ac 1 -i hw:1 -f video4linux2 -r 15 -s qqvga -i /dev/video0
 -vcodec libx264 -preset ultrafast -g 15 -crf 20 -acodec aac -strict
 experimental -ar 44100 -ab 96k -f mpegts udp://192.168.25.101:10001
 }}}
 ?
 FFmpeg expects options that apply to inputs before the affected input, so
 I would assume that putting -isync before the output file (after all
 inputs) has no effect.

-- 
Ticket URL: <https://avcodec.org/trac/ffmpeg/ticket/450#comment:1>
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