On Thu, 15 Nov 2018, 16:36 Ron Barnes <[email protected] wrote: > Hi Kieran, > > I was able to compress the file from 80GB to 27GB but I'm still having > major buffering issues. Would the commands below be the same for an MP4 > output? I have had better luck using MP4 instead of MKV. >
You could replace the reserve_index_space 50k command with -movflags +fast start If using MP4 or mov. Best, Kieran > Thanks, > -Ron > > -----Original Message----- > From: ffmpeg-user <[email protected]> On Behalf Of Kieran O > Leary > Sent: Thursday, November 15, 2018 8:34 AM > To: FFmpeg user questions <[email protected]> > Subject: Re: [FFmpeg-user] 4K Compression using x.265 issues > > I should have proof-read better. I have many typos in here, but the worse > is my broken command where I said -ar 2 instead of -ac 2 > > Also I meant to say that I wasn't sure if downsampling will increase the > volume levels, as I don't know enough about audio . > > So overall, your command would be something like (i haven't tested this): > ffmpeg -i "YDXJ0085.MP4" -c:v libx265 -preset medium -map 0 > -reserve_index_space 50k -crf 22 -s 3840x2160 -b:v 10M -ac 2 -c:a aac -b:a > 128k -metadata title="Juliana - Disney 8-12-2018" > Disney_Vac_1.mkv > _______________________________________________ > 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". > > _______________________________________________ > 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". _______________________________________________ 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".
