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Ffmpeg clip video on b frame3/16/2023 ![]() I know I'm going to hear a lot of criticism for that last statement but it is true. FFmpeg will indeed cut at other than an I frame ('P' frame) since they made the input -SS frame accurate. ![]() Thanks for the help and it allowed me to follow your suggestions and found the problem. This is probably a simple explanation but it has halted my creation of a frame accurate program that works on most other MP4's without 5 reference frames.Īny help or explanation would be greatly appreciated.Ĭomplete name : D:\PathToVideo\video_Zeroed.mp4Ĭomment : Recorded and Tagged by Replay Media Catcher 7 ( Videoįormat profile : settings : CABAC / 5 Ref FramesĮncoding settings : cabac=1 / ref=5 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=8 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=15 / lookahead_threads=2 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=90 / keyint_min=46 / scenecut=0 / intra_refresh=0 / rc_lookahead=50 / rc=crf / mbtree=1 / crf=22.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / vbv_maxrate=2000 / vbv_bufsize=80 / crf_max=25.0 / nal_hrd=none / filler=0 / ip_ratio=1.40 / aq=1:1.00 ![]() Code: ffmpeg -ss 31.6 -i "D:\PathToInputVideo\Video_Zeroed.mp4" -vframes 809 -c:v copy -c:a copy -y "D:\PathToOutputVideo\OutVideo_Zeroed.mp4" The video is 74 frames shorter and stop cut of 883 must be specified to include all frames of that segment. ![]()
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