On Thu, Sep 20, 2018 at 12:27 PM, Moritz Barsnick <[email protected]> wrote: > On Thu, Sep 20, 2018 at 10:24:55 +0100, Anthony Griffiths wrote: >> On Thu, Sep 20, 2018 at 9:59 AM, Carl Eugen Hoyos <[email protected]> wrote: >> > 2018-09-20 10:46 GMT+02:00, Anthony Griffiths <[email protected]>: >> > >> > The problem was not that you used "-f flv -vcodec libx264" but >> > "-f flv -vcodec flv -vcodec libx264" >> >> now I'm really puzzled, because in the command I just gave there's -f >> flv and -codec:v libx264, there is no -vcodec flv or -vcodec libx264 > > It was an error in your second command given, where you had written: > "whats strange is this command does work with text overlay". > > I'm now assuming this is the command you wish to get working: >> dvgrab -format dv1 - | \ >> /home/<me>/Downloads/ffmpeg-git-20180920-64bit-static/ffmpeg \ >> -deinterlace -f dv -i - -f flv -y \ >> -vf >> [in]drawtext="fontfile=/home/<me>/packages/Fonts/verdana.ttf:textfile=/home/<me>/screentext.txt:fontcolor=white:fontsize=20:x=30:y=30:reload=1"[out] >> \ >> -codec:v libx264 -preset slow -aspect 16:9 -s 320x180 -b:v 1500k -maxrate >> 500k -bufsize 1000k -vf scale=-1:240 -threads 0 >> -framerate 15 -qscale:v 20 -codec:a aac -b:a 64k -af aformat=s16:44100 >> rtmp://<ip-address>/<name-nginx>" > > Correct? > > One thing to always first do when debugging is to e.g. change the > output to a file, such as output.mkv or output.mp4, and see whether the > desired effect is missing there as well. > > Your issue is likely: > You're passing "-vf" twice. Only one of them is taken into > consideration! (Perhaps ffmpeg should warn, but it isn't implemented to > do so right now.) That's why your drawfile is probably ignored. "ffmpeg > -loglevel debug" would show the actually used filter chains. (Even > without the loglevel, it should be obvious what is missing.) > > If you want several filters, you need to combine them to a chain: > $ -vf "drawtext=...,scale=..." > > I don't think "-vf" actually handles "[in]" and "[out]" - you're not > even telling it what "[in]" is, so this "-vf" option is obviously just > being ignored. > > Additional remarks: > > "-deinterlace" inserts a deinterlace filter somewhere. I'm not sure > about the cross-effect on "-vf", so better to explicitly insert a > particular deinterlace filter in your chain. > > I don't know what the effect of "-vf scale=-1:240 -s 320x180" is. I > believe the latter argument inserts (another) scale filter at the end. > Why not just "-vf scale=-1:180" and drop "-s ..."?? You need to think > about what you are trying to achieve, and best put all into one filter > chain, e.g.: > > $ ffmpeg -i input -vf > "yadif=...,drawtext=fontfile=/home/<me>/packages/Fonts/verdana.ttf:textfile=/home/<me>/screentext.txt:fontcolor=white:fontsize=20:x=30:y=30:reload=1,scale=-1:180" > [...] > > Cheers, > Moritz
moritz thankyou very much you cracked it for me. I now have text overlay working. The thing that did it (I think) was removing '-vf scale=-1:240' as you said. I also removed -deinterlace and also removed '[in][out]' and the command still worked. (shows I didn't need them).and the stream still works on a smartphone which is great. thanks again. _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
