From: Ulf Zibis <ulf.zi...@gmx.de> <ulf.zi...@gmx.de> Reply: FFmpeg user questions <ffmpeg-user@ffmpeg.org> <ffmpeg-user@ffmpeg.org> Date: February 13, 2019 at 4:23:43 PM To: ffmpeg-user@ffmpeg.org <ffmpeg-user@ffmpeg.org> <ffmpeg-user@ffmpeg.org> Subject: Re: [FFmpeg-user] What is option -level ?
> Am 13.02.19 um 20:23 schrieb Lou Logan: > > https://trac.ffmpeg.org/wiki/Encode/H.264 > > Thanks, I know this page. > > If I need 2 passes I should know about the correct syntax, "-flags pass1" > or > "-pass 1". > > "-pass 1" for the first pass, then "-pass 2" for the second pass. > > > I was just wondering, that option "-pass" is not mentioned here: > https://www.ffmpeg.org/ffmpeg-codecs.html#toc-Codec-Options > So I understand that it is an alternative to the "-flags pass1" syntax. > Hi I was thinking part of the reason for confusion is the understanding of how command arguments work. I didn’t include all from earlier in the thread, but here are some. Most arguments are preceded ‘-‘. ‘-vf’ then its options, the string including crop till it reaches the space after. Each option is separated by spaces. So ‘-pass’ further down is not an option of ‘-flag8s’. Some arguments don’t have options, but most of the ones you are looking at do. There are a dreadful amount of arguments in those commands. The scale ‘-s’ and its option ‘$WIDTHxHEIGHT’. ‘-flags’ has options but ‘-pass’ is not part of it. Just the ‘+loop+mv4’ part. I don’t know if K3copy uses the bash shell to run the ffmpeg, but I suspect it does. If you set all the environment variables(starts with ‘$’ like $WIDTH) in bash or put in in a shell script, you can trial and error the ffmpeg command line. -b $VIDBRk -s $WIDTHx$HEIGHT -vf crop=$WIDTH-$CROPRIGHT-$CROPLEFT:$HEIGHT-$CROPTOP-$CROPBOTTOM:$CROPLEFT:$CROPTOP -aspect $ASPECT -codec:v libx264 -level 30 -flags +loop+mv4 ... -pass $PASS -passlogfile $PASSLOGFILE Hope this is helpful. Jonathan > > -Ulf > > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". > _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".