My source for inputs into FFmpeg is either one AVI file or a concat of many of them. Either way my resulting timelapse file has a long tail of frames that are a repeat of a single frame. It's like a very long freeze frame is resulting on the end of my output file.
I'm on an older Mac Pro so I can't update my FFmpeg. I have a laptop that has a newer version and I get the same there as well. I'm not sure if it's because my source files are AVI or not.
ffmpeg version 4.1.1 Copyright (c) 2000-2019 the FFmpeg developers
built with Apple LLVM version 8.0.0 (clang-800.0.42.1)
configuration: --prefix=/usr/local/Cellar/ffmpeg/4.1.1 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags=-I/System/Library/Frameworks/JavaVM.framework/Versions/Current/Headers/ --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libtesseract --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-videotoolbox --disable-libjack --disable-indev=jack --enable-libaom --enable-libsoxr
libavutil 56. 22.100 / 56. 22.100
libavcodec 58. 35.100 / 58. 35.100
libavformat 58. 20.100 / 58. 20.100
libavdevice 58. 5.100 / 58. 5.100
libavfilter 7. 40.101 / 7. 40.101
libavresample 4. 0. 0 / 4. 0. 0
libswscale 5. 3.100 / 5. 3.100
libswresample 3. 3.100 / 3. 3.100
libpostproc 55. 3.100 / 55. 3.100
[avi @ 0x7fa82080c800] sample size (1) != block align (2)
Guessed Channel Layout for Input Stream #0.1 : mono
Input #0, avi, from 'concat:16460001.AVI|16460002.AVI|16460003.AVI|16460004.AVI|16460005.AVI|16460006.AVI|16460007.AVI|16460008.AVI|16460009.AVI|16460010.AVI|16460011.AVI|16460012.AVI|16460013.AVI|16460014.AVI|16460015.AVI|16460016.AVI|16460017.AVI|16460018.AVI|16460019.AVI|16460020.AVI|16460021.AVI':
Duration: 00:10:02.00, start: 0.000000, bitrate: 365923 kb/s
Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj420p(pc, bt470bg/unknown/unknown), 1280x720, 30 fps, 30 tbr, 30 tbn, 30 tbc
Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 32000 Hz, mono, s16, 512 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
Stream #0:1 -> #0:1 (pcm_s16le (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 0x7fa82082cc00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.1 Cache64
[libx264 @ 0x7fa82082cc00] profile High, level 3.1
[libx264 @ 0x7fa82082cc00] 264 - core 155 r2917 0a84d98 - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 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=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=16 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'out.mp4':
Metadata:
encoder : Lavf58.20.100
Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuvj420p(pc, progressive), 1280x720, q=-1--1, 16 fps, 16384 tbn, 16 tbc
Metadata:
encoder : Lavc58.35.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 32000 Hz, mono, fltp, 69 kb/s
Metadata:
encoder : Lavc58.35.100 aac
frame= 1962 fps=1.2 q=-1.0 Lsize= 136725kB time=03:24:07.00 bitrate= 91.5kbits/s dup=0 drop=365448 speed=7.41x
video:31548kB audio:103624kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.149437%
[libx264 @ 0x7fa82082cc00] frame I:10 Avg QP:18.74 size: 62176
[libx264 @ 0x7fa82082cc00] frame P:514 Avg QP:21.24 size: 30528
[libx264 @ 0x7fa82082cc00] frame B:1438 Avg QP:22.74 size: 11121
[libx264 @ 0x7fa82082cc00] consecutive B-frames: 1.4% 2.0% 2.0% 94.6%
[libx264 @ 0x7fa82082cc00] mb I I16..4: 2.1% 97.2% 0.7%
[libx264 @ 0x7fa82082cc00] mb P I16..4: 2.0% 33.3% 0.1% P16..4: 37.7% 12.0% 10.4% 0.0% 0.0% skip: 4.5%
[libx264 @ 0x7fa82082cc00] mb B I16..4: 0.7% 11.5% 0.0% B16..8: 29.1% 4.8% 1.3% direct:12.0% skip:40.6% L0:47.5% L1:42.9% BI: 9.6%
[libx264 @ 0x7fa82082cc00] 8x8 transform intra:94.3% inter:83.0%
[libx264 @ 0x7fa82082cc00] coded y,uvDC,uvAC intra: 73.4% 66.7% 8.5% inter: 25.9% 46.8% 2.2%
[libx264 @ 0x7fa82082cc00] i16 v,h,dc,p: 17% 33% 26% 24%
[libx264 @ 0x7fa82082cc00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 13% 23% 51% 1% 2% 1% 4% 1% 2%
[libx264 @ 0x7fa82082cc00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 17% 21% 19% 5% 8% 7% 13% 5% 5%
[libx264 @ 0x7fa82082cc00] i8c dc,h,v,p: 46% 29% 23% 2%
[libx264 @ 0x7fa82082cc00] Weighted P-Frames: Y:47.5% UV:19.3%
[libx264 @ 0x7fa82082cc00] ref P L0: 45.0% 13.8% 20.6% 15.7% 5.0%
[libx264 @ 0x7fa82082cc00] ref B L0: 61.1% 30.4% 8.5%
[libx264 @ 0x7fa82082cc00] ref B L1: 85.8% 14.2%
[libx264 @ 0x7fa82082cc00] kb/s:2107.54
[aac @ 0x7fa82081ea00] Qavg: 130.084
I've read this thread and tried to follow it:
Create time lapse video from other video
Here are some trials I've attempted before, all with the same output:
# ffmpeg -y -i $mov -vf framestep=10,setpts=N/FRAME_RATE/TB,fps=2 -r 30 $out
# ffmpeg -y -i $mov -vf framestep=10,setpts=.01*PTS -r 30 $out
# ffmpeg -y -i $mov -vf framestep=10,setpts=.1*PTS -r 30 $out
# ffmpeg -y -i "concat:16460001.AVI|16460002.AVI|16460003.AVI|16460004.AVI|16460005.AVI|16460006.AVI|16460007.AVI|16460008.AVI|16460009.AVI|16460010.AVI|16460011.AVI|16460012.AVI|16460013.AVI|16460014.AVI|16460015.AVI|16460016.AVI|16460017.AVI|16460018.AVI|16460019.AVI|16460020.AVI|16460021.AVI" -vf framestep=10,setpts=.05*PTS -r 30 $out
ffmpeg -y -i "concat:16460001.AVI|16460002.AVI|16460003.AVI|16460004.AVI|16460005.AVI|16460006.AVI|16460007.AVI|16460008.AVI|16460009.AVI|16460010.AVI|16460011.AVI|16460012.AVI|16460013.AVI|16460014.AVI|16460015.AVI|16460016.AVI|16460017.AVI|16460018.AVI|16460019.AVI|16460020.AVI|16460021.AVI" -r 16 -filter:v "setpts=0.01*PTS" out.mp4
Am I overlooking something? I'm trying to speed up the inputs into a single file to quickly review incoming security footage. How can I do this without the super long useless tail at the end?
Use
ffmpeg -i 16460021.AVI -vf framestep=15,setpts=N/30/TB -r 30 -an out.mp4
I get an output 1/15th the length of the original. When using framestep=X, setpts should be of the form N/X/TB if you wish to avoid frame duplication. Don't use fps when compressing video duration as it uses old stream duration from before compression (a bug). Skip audio, since that will result in original length.