ffmpeg log file

[lomero]

i have this string to encode some video:

ffmpeg -i "input.mp4" -vcodec mpeg4 -b:v 2000k -tag:v xvid -c:a mp3 -b:a 96k 2> log.txt "output.avi"

and i have log.txt file at final encode process.
but cmd window it's frozen!
how to have normal string encoding on cmd window AND log txt at the end?

[ProWo]

cmd windows isn't frozen, the standarderroroutput goes to the textfile.
ffmpeg -i "input.mp4" -vcodec mpeg4 -b:v 2000k -tag:v xvid -c:a mp3 -b:a 96k "output.avi" 2> log.txt

[lomero]

ok understand.
is it not possible to have the usual debug window and then a final txt file?
or both?

or have an error log file at the end of the encoding? (in case of errors...)

[poisondeathray]

ok understand.
is it not possible to have the usual debug window and then a final txt file?
or both?

or have an error log file at the end of the encoding? (in case of errors...)

You can use -report

Specify a different -loglevel if you wanted customize more or less information

[lomero]

tanxs for your reply.
-report it's too much information... i need only information same on cmd win during encoding...

this is because in a previous conversion i've see red lines with errors and in fact my final file had an audio delay compared to the video of a few seconds (very annoying, and in fact i had to cut the video and redo the part where the error started).
obviously after the conversion i closed the window cmd so i hadn't kept a log file...

about ffmpeg documentation i have read about -loglevel info but final log not change. always too much information... other ways to have a more restricted log file?