> -----Original Message----- > From: ffmpeg-user [mailto:ffmpeg-user-boun...@ffmpeg.org] On Behalf Of > Moritz Barsnick > Sent: 25 July 2015 10:45 > To: FFmpeg user discussions > Subject: Re: [FFmpeg-user] Running multiple ffmpeg commands with > minimal loss in quality > > On Fri, Jul 24, 2015 at 16:02:22 -0700, Michael Nolan wrote: > > do things like overlay, scale and trim videos, render text, render > > images, > [...] > > The biggest issue that I have is that the application that I run has > > to run ffmpeg multiple times, thus re-encoding the video(s) and making > > the end video look much lower quality than the original content. The > > original videos are .webm and encoded using QTmuxingAppLibWebM- > 0.0.1. > > You say it "has to". Could you elaborate? > > > Is there any way that I can help prevent this sort of thing or is > > there any existing tooling for taking a series of edits and running > > them in one command (meaning I don't have to re-encode multiple times)? > > Not if it "has to". You didn't give us examples of what you are doing - full > command lines for the chain of edits - so I can only guess you are basically > using ffmpeg's filters (in the widest sense) to do these edits. > > If so, you can chain your filters to a filterchain or a complex filter.
Thanks, I neglected to mention this. > > $ ffmpeg [...] -vf filter1=a=a1:b=b1,filter2=c=c1:d=d1 [...] $ ffmpeg [...] - > filter_complex > "[0:v][1:v]filter1=...[outv];[0:a]filter2[outa];[outv][2:v]overlay" [...] > > Please show us your commands. > > Moritz > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-user _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
