[FFmpeg-user] setpts filter produces much smaller files

Howdy ffmpeg users. I have found a behavior that seems strange to me.  The following two commands: $ ffmpeg -i input.mkv -an -c:v libx265 -preset slow -crf 21 output1.mkv and $ ffmpeg -i input.mkv -an -c:v libx265 -preset slow -crf 21 -vf "setpts=PTS-STARTPTS" output2.mkv produce output files

Re: [FFmpeg-user] setpts filter produces much smaller files

On 5/21/25 12:19 PM, German Geraskin wrote: > Hi, > > Well, I can confirm the problem. > The problem is specific to the libx265 encoder and ffmpeg version n7.x. > The problem does not depend on the platform. > > I tested on Windows (x86_64). > > # FFmpeg n4.4 and n7.1 > The libx264 encoder gives th

Re: [FFmpeg-user] setpts filter produces much smaller files

On 5/20/25 10:32 PM, Def Etienne wrote: >> On 19 May 2025, at 03:01, George Welch via ffmpeg-user >> wrote: >> >> Howdy ffmpeg users. >> >> I have found a behavior that seems strange to me. The following two >> commands: >> >> $ ffm