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• avformat/swfdec : Move packet size check before side data allocation

  19 août 2016, par Michael Niedermayer

  avformat/swfdec : Move packet size check before side data allocation
  Fixes memleak
  
  Fixes : 9eb9cf5b8c26dd0fa7107ed0348dcc1f/signal_sigabrt_7ffff6ae7c37_8927_f14c2a6ae1ad0bbde2c94f1da50e7074.swf
  Found-by : Mateusz "j00ru" Jurczyk and Gynvael Coldwind
  
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavformat/swfdec.c

• FFMPEG - adding a nullsrc causes my script to report "1000 duplicate frames"

  14 juin 2020, par rossmcm

  I'm trying to add coloured rectangle highlights to a video, appearing at different locations and times. The highlights are on a 6x6 grid of 320x180 rectangles.

  



  Originally I didn't have the nullsrc=size=1920x1080 thinking that it would start with an empty image, but it seems that that causes it to make assumptions about where the input is coming from. So I added the nullsrc=size=1920x1080 to start with a transparent 1920x1080 image but this command returns a warning that 1000 duplicate frames have been produced and it keeps going past the end of the input video with no signs of stopping.

  



  ffmpeg -y \       
  -i "Input.mp4" \           
  -filter_complex \ 
 "nullsrc=size=1920x1080, drawbox=x=(3-1)*320:y=(3-1)*180:w=320:h=180:t=7:c=cyan,   fade=in:st=10:d=1:alpha=1, fade=out:st=40:d=1:alpha=1[tmp1]; \
  nullsrc=size=1920x1080, drawbox=x=(4-1)*320:y=(4-1)*180:w=320:h=180:t=7:c=blue,   fade=in:st=20:d=1:alpha=1, fade=out:st=50:d=1:alpha=1[tmp2]; \
  nullsrc=size=1920x1080, drawbox=x=(5-1)*320:y=(5-1)*180:w=320:h=180:t=7:c=green,  fade=in:st=30:d=1:alpha=1, fade=out:st=60:d=1:alpha=1[tmp3]; \
  nullsrc=size=1920x1080, drawbox=x=(6-1)*320:y=(6-1)*180:w=320:h=180:t=7:c=yellow, fade=in:st=40:d=1:alpha=1, fade=out:st=70:d=1:alpha=1[tmp4]; \
  [tmp1][tmp2] overlay=0:0[ovr1]; \ 
  [tmp3][tmp4] overlay=0:0[ovr2]; \ 
  [ovr1][ovr2] overlay=0:0[boxes]; \ 
  [0:v][boxes] overlay=0:0" \        
  "Output.mp4"


  



  The input video is around 01:45 long. Log of run :

  



  ffmpeg -y        -loglevel verbose       -i "Input.mp4"          -filter_complex " nullsrc=size=1920x1080, drawbox=x=(3-1)*320:y=(3-1)*180:w=320:h=180:t=7:c=cyan,   fade=in:st=10:d=1:alpha=1, fade=out:st=40:d=1:alpha=1[tmp1]; nullsrc=size=1920x1080, drawbox=x  =(4-1)*320:y=(4-1)*180:w=320:h=180:t=7:c=blue,   fade=in:st=20:d=1:alpha=1, fade=out:st=50:d=1:alpha=1[tmp2]; nullsrc=size=1920x1080, drawbox=x=(5-1)*320:y=(5-1)*180:w=320:h=180:t=7:c=green,  fa
de=in:st=30:d=1:alpha=1, fade=out:st=60:d=1:alpha=1[tmp3]; nullsrc=size=1920x1080, drawbox=x=(6-1)*320:y=(6-1)*180:w=320:h=180:t=7:c=yellow, fade=in:st=40:d=1:alpha=1, fade=out:st=70:d=1:alpha=1[tmp4]; [tmp1][tmp2] overlay=0:0[ovr1]; [tmp3][tmp4] overlay=0:0[ovr2]; [ovr1][ovr2] overlay=0:0[boxes]; [0:v][boxes] overlay=0:0"      "Output.mp4"
ffmpeg version 3.4 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 7.2.0 (GCC)
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvid
stab --enable-libvorbis --enable-cuda --enable-cuvid --enable-d3d11va --enable-nvenc --enable-dxva2 --enable-avisynth --enable-libmfx
  libavutil      55. 78.100 / 55. 78.100
  libavcodec     57.107.100 / 57.107.100
  libavformat    57. 83.100 / 57. 83.100
  libavdevice    57. 10.100 / 57. 10.100
  libavfilter     6.107.100 /  6.107.100
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc    54.  7.100 / 54.  7.100
[h264 @ 000001df2b623ea0] Reinit context to 1920x1088, pix_fmt: yuv420p
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Input.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.29.100
  Duration: 00:01:48.67, start: 0.000000, bitrate: 1825 kb/s
    Stream #0:0(und): Video: h264 (High), 1 reference frame (avc1 / 0x31637661), yuv420p(left), 1920x1080 (1920x1088) [SAR 1:1 DAR 16:9], 1693 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 44100 Hz, stereo, s16p, 127 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
[Parsed_nullsrc_0 @ 000001df2b61af00] size:1920x1080 rate:25/1 duration:-1.000000 sar:1/1
[Parsed_fade_2 @ 000001df2b6a6860] type:in start_time:10.000000 duration:1.000000 alpha:1
[Parsed_fade_3 @ 000001df2b9ddec0] type:out start_time:40.000000 duration:1.000000 alpha:1
[Parsed_nullsrc_4 @ 000001df2bc00560] size:1920x1080 rate:25/1 duration:-1.000000 sar:1/1
[Parsed_fade_6 @ 000001df29fe6780] type:in start_time:20.000000 duration:1.000000 alpha:1
[Parsed_fade_7 @ 000001df29fe6840] type:out start_time:50.000000 duration:1.000000 alpha:1
[Parsed_nullsrc_8 @ 000001df2b642dc0] size:1920x1080 rate:25/1 duration:-1.000000 sar:1/1
[Parsed_fade_10 @ 000001df2b6442a0] type:in start_time:30.000000 duration:1.000000 alpha:1
[Parsed_fade_11 @ 000001df2b6444e0] type:out start_time:60.000000 duration:1.000000 alpha:1
[Parsed_nullsrc_12 @ 000001df2b62d000] size:1920x1080 rate:25/1 duration:-1.000000 sar:1/1
[Parsed_fade_14 @ 000001df2b62d580] type:in start_time:40.000000 duration:1.000000 alpha:1
[Parsed_fade_15 @ 000001df2b62ddc0] type:out start_time:70.000000 duration:1.000000 alpha:1
Stream mapping:
  Stream #0:0 (h264) -> overlay:main (graph 0)
  overlay (graph 0) -> Stream #0:0 (libx264)
  Stream #0:1 -> #0:1 (mp3 (native) -> aac (native))
Press [q] to stop, [?] for help
[h264 @ 000001df2b8e5040] Reinit context to 1920x1088, pix_fmt: yuv420p
[graph_1_in_0_1 @ 000001df2b62e100] tb:1/44100 samplefmt:s16p samplerate:44100 chlayout:0x3
[format_out_0_1 @ 000001df2b62e5e0] auto-inserting filter 'auto_resampler_0' between the filter 'Parsed_anull_0' and the filter 'format_out_0_1'
[auto_resampler_0 @ 000001df2b62dd00] ch:2 chl:stereo fmt:s16p r:44100Hz -> ch:2 chl:stereo fmt:fltp r:44100Hz
[Parsed_nullsrc_0 @ 000001df2b62e440] size:1920x1080 rate:25/1 duration:-1.000000 sar:1/1
[Parsed_fade_2 @ 000001df2b62df60] type:in start_time:10.000000 duration:1.000000 alpha:1
[Parsed_fade_3 @ 000001df2b62e6c0] type:out start_time:40.000000 duration:1.000000 alpha:1
[Parsed_nullsrc_4 @ 000001df2b62d9c0] size:1920x1080 rate:25/1 duration:-1.000000 sar:1/1
[Parsed_fade_6 @ 000001df2b62e520] type:in start_time:20.000000 duration:1.000000 alpha:1
[Parsed_fade_7 @ 000001df2b62d8e0] type:out start_time:50.000000 duration:1.000000 alpha:1
[Parsed_nullsrc_8 @ 000001df2b62e1e0] size:1920x1080 rate:25/1 duration:-1.000000 sar:1/1
[Parsed_fade_10 @ 000001df2b62e2a0] type:in start_time:30.000000 duration:1.000000 alpha:1
[Parsed_fade_11 @ 000001df2b62e380] type:out start_time:60.000000 duration:1.000000 alpha:1
[Parsed_nullsrc_12 @ 000001df2b62dc20] size:1920x1080 rate:25/1 duration:-1.000000 sar:1/1
[Parsed_fade_14 @ 000001df2b816f60] type:in start_time:40.000000 duration:1.000000 alpha:1
[Parsed_fade_15 @ 000001df2b817ac0] type:out start_time:70.000000 duration:1.000000 alpha:1
[graph 0 input from stream 0:0 @ 000001df2b817ba0] w:1920 h:1080 pixfmt:yuv420p tb:1/15360 fr:30/1 sar:1/1 sws_param:flags=2
[Parsed_drawbox_1 @ 000001df2b62da80] x:640 y:360 w:320 h:180 color:0xA9A610FF
[Parsed_drawbox_5 @ 000001df2b62e780] x:960 y:540 w:320 h:180 color:0x29F06EFF
[Parsed_overlay_16 @ 000001df2b817860] main w:1920 h:1080 fmt:yuva420p overlay w:1920 h:1080 fmt:yuva420p
[Parsed_overlay_16 @ 000001df2b817860] [framesync @ 000001df2b815348] Selected 1/25 time base
[Parsed_overlay_16 @ 000001df2b817860] [framesync @ 000001df2b815348] Sync level 2
[Parsed_drawbox_9 @ 000001df2b62db60] x:1280 y:720 w:320 h:180 color:0x515B51FF
[Parsed_drawbox_13 @ 000001df2b818be0] x:1600 y:900 w:320 h:180 color:0xD21092FF
[Parsed_overlay_17 @ 000001df2b816d00] main w:1920 h:1080 fmt:yuva420p overlay w:1920 h:1080 fmt:yuva420p
[Parsed_overlay_17 @ 000001df2b816d00] [framesync @ 000001df2b815e48] Selected 1/25 time base
[Parsed_overlay_17 @ 000001df2b816d00] [framesync @ 000001df2b815e48] Sync level 2
[Parsed_overlay_18 @ 000001df2b8183c0] main w:1920 h:1080 fmt:yuva420p overlay w:1920 h:1080 fmt:yuva420p
[Parsed_overlay_18 @ 000001df2b8183c0] [framesync @ 000001df2b815668] Selected 1/25 time base
[Parsed_overlay_18 @ 000001df2b8183c0] [framesync @ 000001df2b815668] Sync level 2
[Parsed_overlay_19 @ 000001df2b817d40] main w:1920 h:1080 fmt:yuv420p overlay w:1920 h:1080 fmt:yuva420p
[Parsed_overlay_19 @ 000001df2b817d40] [framesync @ 000001df2b816488] Selected 1/76800 time base
[Parsed_overlay_19 @ 000001df2b817d40] [framesync @ 000001df2b816488] Sync level 2
[libx264 @ 000001df2b62cd40] using SAR=1/1
[libx264 @ 000001df2b62cd40] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 000001df2b62cd40] profile High, level 4.0
[libx264 @ 000001df2b62cd40] 264 - core 152 r2851 ba24899 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - 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 weigh
tb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 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 'Output.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf57.83.100
    Stream #0:0: Video: h264 (libx264), 1 reference frame (avc1 / 0x31637661), yuv420p(left), 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
    Metadata:
      encoder         : Lavc57.107.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, delay 1024, 128 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
      encoder         : Lavc57.107.100 aac
[Parsed_overlay_19 @ 000001df2b817d40] [framesync @ 000001df2b816488] Sync level 1speed=0.78x
Past duration 0.800774 too large
*** 1 dup!5 fps= 24 q=29.0 size=   21760kB time=00:01:46.86 bitrate=1668.0kbits/s speed=0.78x
    Last message repeated 1 times
*** 1 dup!8 fps= 24 q=29.0 size=   21760kB time=00:01:47.30 bitrate=1661.3kbits/s dup=2 drop=0 speed=0.78x
    Last message repeated 2 times
*** 1 dup!3 fps= 24 q=29.0 size=   21760kB time=00:01:47.80 bitrate=1653.6kbits/s dup=5 drop=0 speed=0.781x
    Last message repeated 1 times

...

    Last message repeated 2 times
*** 1 dup!3 fps= 25 q=29.0 size=   27392kB time=00:05:05.80 bitrate= 733.8kbits/s dup=995 drop=0 speed=0.832x
    Last message repeated 1 times
*** 1 dup!6 fps= 25 q=29.0 size=   27392kB time=00:05:06.23 bitrate= 732.8kbits/s dup=997 drop=0 speed=0.832x
    Last message repeated 1 times
*** 1 dup!0 fps= 25 q=29.0 size=   27392kB time=00:05:06.70 bitrate= 731.6kbits/s dup=999 drop=0 speed=0.832x
    Last message repeated 1 times
More than 1000 frames duplicated
*** 1 dup!3 fps= 25 q=29.0 size=   27392kB time=00:05:07.13 bitrate= 730.6kbits/s dup=1001 drop=0 speed=0.832x
    Last message repeated 2 times
*** 1 dup!8 fps= 25 q=29.0 size=   27392kB time=00:05:07.63 bitrate= 729.4kbits/s dup=1004 drop=0 speed=0.832x
    Last message repeated 1 times
... 
*** 1 dup!9 fps= 25 q=29.0 size=   27904kB time=00:05:18.66 bitrate= 717.3kbits/s dup=1059 drop=0 speed=0.834x
    Last message repeated 1 times
*** 1 dup!3 fps= 25 q=29.0 size=   27904kB time=00:05:19.13 bitrate= 716.3kbits/s dup=1061 drop=0 speed=0.834x
frame= 9635 fps= 25 q=-1.0 Lsize=   28364kB time=00:05:21.06 bitrate= 723.7kbits/s dup=1062 drop=0 speed=0.837x
video:26539kB audio:1637kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.669889%
Input file #0 (Input.mp4):
  Input stream #0:0 (video): 3260 packets read (23006797 bytes); 3260 frames decoded;
  Input stream #0:1 (audio): 4025 packets read (1682285 bytes); 4025 frames decoded (4636800 samples);
  Total: 7285 packets (24689082 bytes) demuxed
Output file #0 (Output.mp4):
  Output stream #0:0 (video): 9635 frames encoded; 9635 packets muxed (27175566 bytes);
  Output stream #0:1 (audio): 4529 frames encoded (4636800 samples); 4530 packets muxed (1676214 bytes);
  Total: 14165 packets (28851780 bytes) muxed
[libx264 @ 000001df2b62cd40] frame I:39    Avg QP:16.49  size:213954
[libx264 @ 000001df2b62cd40] frame P:2446  Avg QP:17.77  size:  6277
[libx264 @ 000001df2b62cd40] frame B:7150  Avg QP:30.38  size:   486
[libx264 @ 000001df2b62cd40] consecutive B-frames:  0.8%  0.8%  0.1% 98.3%
[libx264 @ 000001df2b62cd40] mb I  I16..4: 13.2% 43.0% 43.8%
[libx264 @ 000001df2b62cd40] mb P  I16..4:  0.2%  0.2%  0.1%  P16..4:  7.1%  3.3%  1.7%  0.0%  0.0%    skip:87.5%
[libx264 @ 000001df2b62cd40] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  4.3%  0.1%  0.0%  direct: 0.0%  skip:95.5%  L0:41.9% L1:56.1% BI: 2.0%
[libx264 @ 000001df2b62cd40] 8x8 transform intra:44.1% inter:65.8%
[libx264 @ 000001df2b62cd40] coded y,uvDC,uvAC intra: 71.3% 83.5% 52.5% inter: 1.1% 1.5% 0.0%
[libx264 @ 000001df2b62cd40] i16 v,h,dc,p: 31% 28%  4% 38%
[libx264 @ 000001df2b62cd40] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 28% 20% 10%  6%  6%  7%  7%  8%  8%
[libx264 @ 000001df2b62cd40] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 33% 28%  7%  4%  6%  6%  6%  5%  5%
[libx264 @ 000001df2b62cd40] i8c dc,h,v,p: 34% 27% 28% 11%
[libx264 @ 000001df2b62cd40] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 000001df2b62cd40] ref P L0: 71.1% 14.9% 10.6%  3.4%
[libx264 @ 000001df2b62cd40] ref B L0: 93.3%  5.9%  0.8%
[libx264 @ 000001df2b62cd40] ref B L1: 97.8%  2.2%
[libx264 @ 000001df2b62cd40] kb/s:676.90
[aac @ 000001df2b6a5620] Qavg: 1165.766
Exiting normally, received signal 2.
Terminate batch job (Y/N)? y


  


• FFMPEG "buffer queue overflow, dropping" with trim and atrim filters

  13 juin 2020, par Prasanna Mahendiran

  In FFMPEG I am actually trimming and concating a 24 FPS video. When I apply a complex filter

  



  ffmpeg -i sample.mp4 -filter_complex \
  "[0:v]setpts = PTS-STARTPTS[bv];
  [bv]split=6[v0][v1][v2][v3][v4][v5];
  [v0]trim=start_frame=1:end_frame=142,loop=1:1:1,setpts=N/FRAME_RATE/TB[0v];
  [v1]trim=start_frame=846:end_frame=878,loop=1:1:1,setpts=N/FRAME_RATE/TB[1v];
  [v2]trim=start_frame=57:end_frame=114,loop=1:1:1,setpts=N/FRAME_RATE/TB[2v];
  [v3]trim=start_frame=865:end_frame=885,loop=1:1:1,setpts=N/FRAME_RATE/TB[3v];
  [v4]trim=start_frame=70:end_frame=155,loop=1:1:1,setpts=N/FRAME_RATE/TB[4v];
  [v5]trim=start_frame=155:end_frame=909,loop=1:1:1,setpts=N/FRAME_RATE/TB[5v];
  [0:a]asplit=6[a0][a1][a2][a3][a4][a5];
  [a0]atrim=0.041666666666666664:5.917,asetpts=N/SR/TB[0a];
  [a1]atrim=35.256:36.603,asetpts=N/SR/TB[1a];
  [a2]atrim=2.379:4.767,asetpts=N/SR/TB[2a];
  [a3]atrim=36.024:36.859,asetpts=N/SR/TB[3a];
  [a4]atrim=2.93:6.438172,asetpts=N/SR/TB[4a];
  [a5]atrim=6.438172:37.895,asetpts=N/SR/TB[5a];
  [0v][0a][1v][1a][2v][2a][3v][3a][4v][4a][5v][5a]concat=n=6:v=1:a=1[vv][aa]"\
  -map "[vv]" -map "[aa]" output.mp4


  



  I am getting "buffer queue overflow, dropping" error. The resultant video and audio is still and not working properly.

  



  ffmpeg version 3.2-1~16.04.york1 Copyright (c) 2000-2016 the FFmpeg developers
  built with gcc 5.4.1 (Ubuntu 5.4.1-3ubuntu1~ubuntu16.04.1york0) 20161019
  configuration: --prefix=/usr --extra-version='1~16.04.york1' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-libtesseract --disable-stripping --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librubberband --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-opengl --enable-sdl2 --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-openal --enable-frei0r --enable-libopencv --enable-libx264 --enable-chromaprint --enable-shared
  libavutil      55. 34.100 / 55. 34.100
  libavcodec     57. 64.100 / 57. 64.100
  libavformat    57. 56.100 / 57. 56.100
  libavdevice    57.  1.100 / 57.  1.100
  libavfilter     6. 65.100 /  6. 65.100
  libavresample   3.  1.  0 /  3.  1.  0
  libswscale      4.  2.100 /  4.  2.100
  libswresample   2.  3.100 /  2.  3.100
  libpostproc    54.  1.100 / 54.  1.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'sample.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    track           : 0
    artist          : 
    album           : 
    date            : 0
    genre           : 
    lyrics          : 
    title           : 
    encoder         : Lavf56.36.100
  Duration: 00:00:37.90, start: 0.000000, bitrate: 951 kb/s
    Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x480 [SAR 1:1 DAR 4:3], 820 kb/s, 24 fps, 24 tbr, 12288 tbn, 48 tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 126 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
File 'output.mp4' already exists. Overwrite ? [y/N] y
[libx264 @ 0x55650097a540] using SAR=1/1
[libx264 @ 0x55650097a540] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x55650097a540] profile High, level 3.0
[libx264 @ 0x55650097a540] 264 - core 148 r2643 5c65704 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - 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=6 lookahead_threads=1 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=24 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 'output.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    track           : 0
    artist          : 
    album           : 
    date            : 0
    genre           : 
    lyrics          : 
    title           : 
    encoder         : Lavf57.56.100
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=-1--1, 24 fps, 12288 tbn, 24 tbc (default)
    Metadata:
      encoder         : Lavc57.64.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    Stream #0:1: Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      encoder         : Lavc57.64.100 aac
Stream mapping:
  Stream #0:0 (h264) -> setpts
  Stream #0:1 (aac) -> asplit
  concat:out:v0 -> Stream #0:0 (libx264)
  concat:out:a0 -> Stream #0:1 (aac)
Press [q] to stop, [?] for help
[Parsed_concat_33 @ 0x55650097b420] Buffer queue overflow, dropping. 471.5kbits/s speed=4.94x    
    Last message repeated 201 times
[Parsed_concat_33 @ 0x55650097b420] Buffer queue overflow, dropping. 522.9kbits/s speed=3.89x    
    Last message repeated 1266 times
[Parsed_concat_33 @ 0x55650097b420] Buffer queue overflow, dropping. 557.0kbits/s speed=3.28x    
    Last message repeated 48 times
[output stream 0:1 @ 0x556500947e20] 100 buffers queued in output stream 0:1, something may be wrong.
[Parsed_concat_33 @ 0x55650097b420] Buffer queue overflow, dropping. 718.6kbits/s speed=3.46x    
    Last message repeated 19 times
[output stream 0:0 @ 0x5565009785c0] 100 buffers queued in output stream 0:0, something may be wrong.
frame= 1091 fps=117 q=-1.0 Lsize=    2795kB time=00:00:45.51 bitrate= 503.1kbits/s dup=475 drop=0 speed=4.88x    
video:2455kB audio:316kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.861779%
[libx264 @ 0x55650097a540] frame I:8     Avg QP:19.26  size: 24207
[libx264 @ 0x55650097a540] frame P:409   Avg QP:21.33  size:  4108
[libx264 @ 0x55650097a540] frame B:674   Avg QP:27.46  size:   949
[libx264 @ 0x55650097a540] consecutive B-frames: 10.3% 13.9% 24.5% 51.3%
[libx264 @ 0x55650097a540] mb I  I16..4:  9.9% 57.0% 33.1%
[libx264 @ 0x55650097a540] mb P  I16..4:  3.6%  7.6%  2.9%  P16..4: 33.0% 10.6%  3.0%  0.0%  0.0%    skip:39.2%
[libx264 @ 0x55650097a540] mb B  I16..4:  0.4%  0.8%  0.4%  B16..8: 24.5%  2.6%  0.2%  direct: 0.5%  skip:70.5%  L0:55.5% L1:41.8% BI: 2.7%
[libx264 @ 0x55650097a540] 8x8 transform intra:53.8% inter:66.7%
[libx264 @ 0x55650097a540] coded y,uvDC,uvAC intra: 44.6% 50.0% 14.8% inter: 6.2% 7.7% 0.2%
[libx264 @ 0x55650097a540] i16 v,h,dc,p: 22% 28% 17% 33%
[libx264 @ 0x55650097a540] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 23% 28%  3%  4%  3% 11%  3%  5%
[libx264 @ 0x55650097a540] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 26% 26% 16%  2%  5%  3% 16%  3%  3%
[libx264 @ 0x55650097a540] i8c dc,h,v,p: 60% 22% 13%  6%
[libx264 @ 0x55650097a540] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x55650097a540] ref P L0: 72.6%  8.4% 15.1%  3.9%
[libx264 @ 0x55650097a540] ref B L0: 88.5% 10.7%  0.8%
[libx264 @ 0x55650097a540] ref B L1: 93.3%  6.7%
[libx264 @ 0x55650097a540] kb/s:442.30
[aac @ 0x556500979280] Qavg: 3215.870


  



  I tried with other stackoverflow questions but none of them worked. Also I think it is partially because the trim timings are mixed. That is start time can be anywhere between 0-end. When I make it strictly increasing it is working fine.