> -----Original Message----- > From: ffmpeg-user [mailto:ffmpeg-user-boun...@ffmpeg.org] On Behalf Of > Michael Nolan > Sent: 25 July 2015 01:02 > To: ffmpeg-user@ffmpeg.org > Subject: [FFmpeg-user] Running multiple ffmpeg commands with minimal > loss in quality > > Hi everyone, > > I'm writing a video editor which will push out a large json file that > includes the videos and a series of edits that were performed upon them. I > have a python application which parses the json and runs ffmpeg commands > to > do things like overlay, scale and trim videos, render text, render images, > etc. > > 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. > > 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)? > > Any help would be appreciated.
The standard approach to this kind of issue is to use (as close to) losslessly encoded intermediate files as possible. I.e. either use a codec designed for lossless encoding such as "HuffYUV", or use something like x264 with "lossless" settings. > > - Mike > IRC: nolski > _______________________________________________ > 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
