Hi everyone, i try to create the encoding suitable for mpeg-dash for my videos and concatenating them. Unfortunately, the concat demux generates a discrepancy of the PTS between videos concatenated: PTS time stamp: [...] 382.021016 384.021016 386.021016 the concat demux effect: 388.043047 390.043047 392.043047 [...] Command line for encoding is ffmpeg -y -i "$f" -i ../logo/logo.png -c:a aac -b:a 384k -ar 48000 -ac 2 -c:v libx264 -x264opts keyint=$GOP:min-keyint=$GOP:no-scenecut -bf 0 -r $FPSC -b:v 4800k -maxrate 4800k -bufsize 3000k -profile:v main -crf 22 -t $DUR -filter_complex "[0:v][1:v]overlay=main_w-overlay_w-10:10,scale=1920:1080,setsar=1" ../buffer/${NAME}-1080.mp4 Command line for concat is [code]ffmpeg -f concat -safe 0 -i 1080list.txt -t $TOTDUR -c copy ../output/1080set.mp4[/code] Videos for input has regular timestamp and starts from 0s How can I get a regular timestamp after concat demux process without performing another encoding (to avoid a process that is too long)? Thanks! Giammy -- Sent from: http://www.ffmpeg-archive.org/