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Anybody knows how to take output log of ffmpeg, which may be like this

this command working well no log out put

ffmpeg -sameq -ss [start_seconds] -t [duration_seconds] -i [input_file] [outputfile]

try to create log

ffmpeg -sameq -ss [start_seconds] -t [duration_seconds] -i [input_file] [outputfile] $1 >> TEST.log

well its not working :(

i m using Ubuntu release 8.04 (hardy) gnome 2.22.3

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how to show lof info of ffmpeg with nautilus scripts ? its not lof (title) > how to show log info of ffmpeg with nautilus scripts ? – Setev Feb 18 '10 at 18:40
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2 Answers

up vote 1 down vote

fmpeg -sameq -ss [start_seconds] -t [duration_seconds] -i [input_file] [outputfile] 2>> TEST.log

the 2 insures that you redirect stderr instead of stdout, all the ffmpeg output goes to stderr.

The one problem I saw figuring this out, is that ffmpeg does not check if its input is open, or whether its output is redirected, so it will stall with a "overwrite [y/n]?" prompt if the output file already exists.

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log is coming but outputfile is 0 bytes :( not working – Setev Feb 18 '10 at 20:03
The $1 should not have been in there, but that following command creates a log file on my computer. "ffmpeg -sameq -ss 5 -t 20 -i test.mp4 test2.mp4 2>> TEST.log" – Justin Smith Feb 18 '10 at 20:07
fmpeg -sameq -ss [start_seconds] -t [duration_seconds] -i [input_file] [outputfile] 2>> TEST.log <<....... this one is working thanks – Setev Feb 18 '10 at 20:25
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up vote 0 down vote 
ffmpeg -sameq -ss [start_seconds] -t [duration_seconds] -i [input_file] [outputfile] >> TEST.log

Not exactly sure what you're asking (assuming English isn't your first language), but the above doesn't work?

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ffmpeg sends no output to stdout, so nothing is captured in the log file. – Justin Smith Feb 18 '10 at 18:55
not working no output – Setev Feb 18 '10 at 20:06
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