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  • ffmpeg mp4 x264 encoding -> playback causes "pending" in both Chrome and IE causing 10+ seconds delay

    26 novembre 2015, par user1978645

    After encoding a video to mp4(x264 with aac) ; I have the following weird behaviour in both crome and IE :

    Im serving the content from https with spdy enables.

    It takes up to 30 seconds before the video is actually played, in the mean time i cannot reload the page it shows up as "pending". (even after i have visual on the video sometimes it takes 10-20 seconds before i can actually reload the page, or navigate to another url on the same domain)

    After looking at the "network" tab in developer tools, i see the following requests for 1 page/video :

    Path        Method Status   Type         Initiator   Size/content  Time/latency
    
video.mp4   GET    206 OK   video/mp4    other       32.3KB/32.0kb  600ms/339MS 
    
video.mp4   GET    206 OK   video/mp4    other       123kb/123b     21.85s/21.46s
    
video.mp4   GET    206 OK   video/mp4    other       7.1MB/7.2MB    1.4min/2ms

    I tried to isolate the problem, When i use an mp4 video from the internet (for example the demo video of jplayer) and load it from my server, it loads rapidly, without delays.

    So it makes me think the problem lies within the encoding. I tried various things.
    FFmpeg :

    • csr 69 (low quality)

    • various options

    HTML :

    • preload="none"

    • javascript loading/playing of the movie

    • type=’mp4/video’

    • no posterimage

    But i cannot resolve the problem. Does anyone have a clue what is causing this ?

    I have a download speed of 300kb/s and the movie is 6MB.

    After the video starts, the video isn’t fully buffered, so i wonder : What is the html5 videoplayer doing all this time ?

    The problem also blocks the connections. When i press "F5" in both chrome and IE the page beeing reloaded comes up in the network tab as "pending" and it can take 10 to 20 seconds before the page actually reloads.

    ffmpeg command : (i used various commands but this is just 1 example which causes the problem)

    /root/bin/ffmpeg    -threads 1 -y  -i /home/flirtzo/public_html//userfiles/files/94e76a18a7838e62ecb23cf0c374b1b798e7b936  -threads 0 -codec:a libfdk_aac -b:a 128k  -vf "scale=-2:320" -preset veryslow -vcodec h264 -acodec aac -strict -2  /home/flirtzo/public_html/userfiles/files/b2/72/695f4eba95169a3f29564bf9571c703b05f1b5974f5156da633eb139c80a1575452e2858dfc61cc82bfca02d2b156aa64d4503695756481dc2a5d1c673a4cdea-94e76a18a7838e62ecb23cf0c374b1b798e7b936.mp4

    Output :

    ffmpeg version git-2014-04-16-c150e2c Copyright (c) 2000-2014 the FFmpeg developers
    
  built on Sep 28 2014 21:08:17 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-4)
    
  configuration: --prefix=/root/ffmpeg_build --extra-cflags=-I/root/ffmpeg_build/include --extra-        ldflags=-L/root/ffmpeg_build/lib --bindir=/root/bin --extra-libs=-ldl --enable-gpl --enable-nonfree -    -enable-libfdk_aac --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-    libx264
    
  libavutil      52. 76.100 / 52. 76.100
    
  libavcodec     55. 58.103 / 55. 58.103
    
  libavformat    55. 37.100 / 55. 37.100
    
  libavdevice    55. 13.100 / 55. 13.100
    
  libavfilter     4.  4.100 /  4.  4.100
    
  libswscale      2.  6.100 /  2.  6.100
    
  libswresample   0. 18.100 /  0. 18.100
    
  libpostproc    52.  3.100 / 52.  3.100
    
Input #0, mpeg, from         '/home/flirtzo/public_html//userfiles/files/94e76a18a7838e62ecb23cf0c374b1b798e7b936':
    
  Duration: 00:00:25.97, start: 0.340078, bitrate: 29004 kb/s
    
    Stream #0:0[0x1e0]: Video: mpeg1video, yuv420p(tv), 352x240 [SAR 200:219 DAR 880:657], 1150     kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 29.97 tbc
    
    Stream #0:1[0x1c0]: Audio: mp2, 44100 Hz, stereo, s16p, 224 kb/s
    
[libx264 @ 0x2b189c0] using SAR=1199/1314
    
[libx264 @ 0x2b189c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    
[libx264 @ 0x2b189c0] profile High, level 1.3
    
[libx264 @ 0x2b189c0] 264 - core 142 r2 d6b4e63 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 -     http://www.videolan.org/x264.html - options: cabac=1 ref=2 deblock=1:0:0 analyse=0x3:0x113 me=hex     subme=4 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0     deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=12 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=1 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0     rc_lookahead=20 rc=crf mbtree=1 crf=51.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, mp4, to     '/home/flirtzo/public_html/userfiles/files/b2/72/695f4eba95169a3f29564bf9571c703b05f1b5974f5156da633e    b139c80a1575452e2858dfc61cc82bfca02d2b156aa64d4503695756481dc2a5d1c673a4cdea-    94e76a18a7838e62ecb23cf0c374b1b798e7b936.mp4':
    
  Metadata:
    
    encoder         : Lavf55.37.100
    
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 320x218 [SAR 1199:1314        DAR 880:657], q=-1--1, 30k tbn, 29.97 tbc
    
    Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, stereo, fltp, 128 kb/s
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (mpeg1video -> libx264)
    
  Stream #0:1 -> #0:1 (mp2 -> aac)
    
Press [q] to stop, [?] for help
    
frame=16127 fps=786 q=-1.0 Lsize=   10559kB time=00:08:58.12 bitrate= 160.7kbits/s dup=12 drop=0
    
video:1586kB audio:8410kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead:     5.638589%
    
[libx264 @ 0x2b189c0] frame I:109   Avg QP:50.58  size:   494
    
[libx264 @ 0x2b189c0] frame P:9537  Avg QP:51.00  size:   138
    
[libx264 @ 0x2b189c0] frame B:6481  Avg QP:51.00  size:    40
    
[libx264 @ 0x2b189c0] consecutive B-frames: 21.8% 72.1%  5.4%  0.7%
    
[libx264 @ 0x2b189c0] mb I  I16..4: 46.1% 53.9%  0.0%
    
[libx264 @ 0x2b189c0] mb P  I16..4:  6.0%  6.1%  0.0%  P16..4: 12.7%  1.1%  0.1%  0.0%  0.0%        skip:74.1%
    
[libx264 @ 0x2b189c0] mb B  I16..4:  0.1%  0.1%  0.0%  B16..8:  6.3%  0.0%  0.0%  direct: 0.7%      skip:92.9%  L0:38.6% L1:61.2% BI: 0.2%
    
[libx264 @ 0x2b189c0] 8x8 transform intra:50.8% inter:85.6%
    
[libx264 @ 0x2b189c0] coded y,uvDC,uvAC intra: 5.9% 39.5% 0.1% inter: 0.1% 1.0% 0.0%
    
[libx264 @ 0x2b189c0] i16 v,h,dc,p: 56% 30%  7%  7%
    
[libx264 @ 0x2b189c0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 12% 11% 62%  3%  3%  3%  3%  2%  2%
    
[libx264 @ 0x2b189c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19%  5% 73%  2%  0%  0%  0%  0%  2%
    
[libx264 @ 0x2b189c0] i8c dc,h,v,p: 97%  1%  2%  0%
    
[libx264 @ 0x2b189c0] Weighted P-Frames: Y:5.5% UV:2.7%
    
[libx264 @ 0x2b189c0] ref P L0: 64.8% 35.2%
    
[libx264 @ 0x2b189c0] ref B L0: 75.2% 24.8%
    
[libx264 @ 0x2b189c0] ref B L1: 99.3%  0.7%
    
[libx264 @ 0x2b189c0] kb/s:24.13
    
ffmpeg version git-2014-04-16-c150e2c Copyright (c) 2000-2014 the FFmpeg developers
    
  built on Sep 28 2014 21:08:17 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-4)
    
  configuration: --prefix=/root/ffmpeg_build --extra-cflags=-I/root/ffmpeg_build/include --extra-    ldflags=-L/root/ffmpeg_build/lib --bindir=/root/bin --extra-libs=-ldl --enable-gpl --enable-nonfree -    -enable-libfdk_aac --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-    libx264
    
  libavutil      52. 76.100 / 52. 76.100
    
  libavcodec     55. 58.103 / 55. 58.103
    
  libavformat    55. 37.100 / 55. 37.100
    
  libavdevice    55. 13.100 / 55. 13.100
    
  libavfilter     4.  4.100 /  4.  4.100
    
  libswscale      2.  6.100 /  2.  6.100
    
  libswresample   0. 18.100 /  0. 18.100
    
  libpostproc    52.  3.100 / 52.  3.100
    
Input #0, mpeg, from     '/home/flirtzo/public_html//userfiles/files/94e76a18a7838e62ecb23cf0c374b1b798e7b936':
    
  Duration: 00:00:25.97, start: 0.340078, bitrate: 29004 kb/s
    
    Stream #0:0[0x1e0]: Video: mpeg1video, yuv420p(tv), 352x240 [SAR 200:219 DAR 880:657], 1150         kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 29.97 tbc
    
    Stream #0:1[0x1c0]: Audio: mp2, 44100 Hz, stereo, s16p, 224 kb/s
    
[libx264 @ 0x300d9c0] using SAR=200/219
    
[libx264 @ 0x300d9c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    
[libx264 @ 0x300d9c0] profile High, level 2.2
    
[libx264 @ 0x300d9c0] 264 - core 142 r2 d6b4e63 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 -                     http://www.videolan.org/x264.html - options: cabac=1 ref=16 deblock=1:0:0 analyse=0x3:0x133 me=umh         subme=10 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=24 chroma_me=1 trellis=2 8x8dct=1 cqm=0     deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=1 sliced_threads=0 nr=0     decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=8 b_pyramid=2 b_adapt=2 b_bias=0     direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0     rc_lookahead=60 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     '/home/flirtzo/public_html/userfiles/files/b2/72/73d4a3245c0b0e174ab7ce0f872ba3f649f8b93f73a6deeab364    4a994009d73638ce61aecc7dc2e0250c4e74ff2d9a4d479ed35cef26b3f6e1a77e8bf5938518-    94e76a18a7838e62ecb23cf0c374b1b798e7b936.mp4':
    
  Metadata:
    
    encoder         : Lavf55.37.100
    
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 352x240 [SAR 200:219     DAR 880:657], q=-1--1, 30k tbn, 29.97 tbc
    
    Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, stereo, fltp, 128 kb/s
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (mpeg1video -> libx264)
    
  Stream #0:1 -> #0:1 (mp2 -> aac)
    
   Press [q] to stop, [?] for help
    
frame=16127 fps= 88 q=-1.0 Lsize=   29190kB time=00:08:58.12 bitrate= 444.4kbits/s dup=12 drop=0
    
video:20221kB audio:8410kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead:     1.954086%
    
[libx264 @ 0x300d9c0] frame I:73    Avg QP:24.31  size:  8024
    
[libx264 @ 0x300d9c0] frame P:4399  Avg QP:26.97  size:  2600
    
[libx264 @ 0x300d9c0] frame B:11655 Avg QP:32.51  size:   745
    
[libx264 @ 0x300d9c0] consecutive B-frames:  3.8%  5.0% 27.2% 18.4%  8.4% 33.9%  1.7%  0.7%  0.9%
    
[libx264 @ 0x300d9c0] mb I  I16..4: 10.8% 68.5% 20.7%
    
[libx264 @ 0x300d9c0] mb P  I16..4:  2.9%  7.5%  0.8%  P16..4: 45.1% 18.4% 12.4%  0.5%  0.1%        skip:12.3%
    
[libx264 @ 0x300d9c0] mb B  I16..4:  0.6%  1.3%  0.1%  B16..8: 40.1%  8.7%  1.7%  direct: 2.1%      skip:45.5%  L0:47.2% L1:41.7% BI:11.1%
    
[libx264 @ 0x300d9c0] 8x8 transform intra:66.7% inter:76.7%
    
[libx264 @ 0x300d9c0] direct mvs  spatial:99.9% temporal:0.1%
    
[libx264 @ 0x300d9c0] coded y,uvDC,uvAC intra: 60.3% 75.8% 16.4% inter: 17.3% 16.8% 0.6%
    
[libx264 @ 0x300d9c0] i16 v,h,dc,p: 16% 27% 11% 47%
    
[libx264 @ 0x300d9c0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 13% 13% 18%  6%  9%  9% 11%  9% 11%
    
[libx264 @ 0x300d9c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 13% 15%  7%  7% 14% 14% 13%  8% 10%
    
[libx264 @ 0x300d9c0] i8c dc,h,v,p: 26% 32% 20% 22%
    
[libx264 @ 0x300d9c0] Weighted P-Frames: Y:10.1% UV:6.9%
    
[libx264 @ 0x300d9c0] ref P L0: 40.6% 12.1% 10.0%  5.2%  5.2%  4.7%  4.6%  3.0%  2.5%  2.1%  1.9%      1.8%  1.7%  1.7%  1.6%  1.3%
    
[libx264 @ 0x300d9c0] ref B L0: 71.4%  5.6%  3.2%  3.0%  3.1%  2.8%  2.5%  1.8%  1.3%  1.0%  1.1%      1.2%  1.0%  0.7%  0.5%
    
[libx264 @ 0x300d9c0] ref B L1: 96.3%  3.7%
    
[libx264 @ 0x300d9c0] kb/s:307.82

  • Syntax error : "(" unexpected — with !(*.sh) in bash script

    3 octobre 2016, par Jmv Jmv

    Regards,

    I want to run a sh file :

    #!/bin/bash
    
for f in !(*.sh); do ffmpeg -i "$f" -vf yadif=0:-1 -threads 0 -c:v libx264 -pix_fmt yuv420p -r 29.97 -b:v 3000k -s 1280x720 -preset:v slow -profile:v Main -level 3.1 -bf 2 -movflags faststart /mnt/media/out-mp4/"${f%.mxf}.mp4"; rm $f; done

    However I get the following error :

    2: task1.sh: Syntax error: "(" unexpected

    If I try directly on the command line it works perfectly.

    the path and permissions are already reviewed

    Any idea what might be happening ?

    Thank you a lot

    UBUNTU 14.04

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

    11 décembre 2016, 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.

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