[FFmpeg-user] Concat 2 videos, results in wrong length of the result
Marek Sebera
marek.sebera at gmail.com
Fri Sep 8 13:08:58 EEST 2017
Hi,
I'm trying to concat 2 video files, process that worked pretty well for
us for the past few months.
Using Debian binary distribution ffmpeg (7:3.2.7-1~deb9u1) and libx264
(libx264-148:amd64 2:0.148.2748+git97eaef2-1)
Concat 2 files, ffmpeg command, ffprobe of both source files and result
files below.
Concat of the 2 videos, of lenght (00:00:21.00) and (00:00:28.03)
results in video of lenght (00:01:54.92), which is obviously wrong.
Is it issue within ffmpeg handling or user error?
Thank you
MS
==== FFMPEG COMMAND ====
ffmpeg -f concat -y -safe 0 -i concat.121.def -c:a none -c:v h264 -an
/var/www/html/webroot/video/121.merged.out.mp4
==== FFMPEG COMMAND output ====
ffmpeg version 3.2.7-1~deb9u1 Copyright (c) 2000-2017 the FFmpeg
developers
built with gcc 6.3.0 (Debian 6.3.0-18) 20170516
configuration: --prefix=/usr --extra-version='1~deb9u1'
--toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu
--incdir=/usr/include/x86_64-linux-gnu --enab
le-gpl --disable-stripping --enable-avresample --enable-avisynth
--enable-gnutls --enable-ladspa --enable-libass --enable-libbluray
--enable-libbs2b --enable-l
ibcaca --enable-libcdio --enable-libebur128 --enable-libflite
--enable-libfontconfig --enable-libfreetype --enable-libfribidi
--enable-libgme --enable-libgsm -
-enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt
--enable-libopus --enable-libpulse --enable-librubberband
--enable-libshine --enable-libsnappy --en
able-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-omx --enable-openal --enable-opengl --enable-sdl2
--enable-libdc1394 --enable-libiec
61883 --enable-chromaprint --enable-frei0r --enable-libopencv
--enable-libx264 --enable-shared
libavutil 55. 34.101 / 55. 34.101
libavcodec 57. 64.101 / 57. 64.101
libavformat 57. 56.101 / 57. 56.101
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
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x5635dbf2c080] Auto-inserting
h264_mp4toannexb bitstream filter
Input #0, concat, from 'concat.121.def':
Duration: N/A, start:
0.000000, bitrate: 1455 kb/s
Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p,
1920x1080, 1455 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc
Metadata:
handler_name : VideoHandler
[libx264 @ 0x5635dbf30100] using cpu capabilities: MMX2 SSE2Fast SSSE3
SSE4.2
[libx264 @ 0x5635dbf30100] profile High, level 4.0
[libx264 @ 0x5635dbf30100] 264 - core 148 r2748 97eaef2 - H.264/MPEG-4
AVC codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html -
options: cabac=1 re
f=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_pski
p=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=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 '/var/www/html/webroot/video/121.merged.out.mp4':
Metadata:
encoder : Lavf57.56.101
Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021),
yuv420p, 1920x1080, q=-1--1, 25 fps, 12800 tbn, 25 tbc
Metadata:
handler_name : VideoHandler
encoder : Lavc57.64.101 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x5635dc783ba0] Auto-inserting
h264_mp4toannexb bitstream filter7x
frame= 2873 fps= 43 q=-1.0 Lsize= 8251kB time=00:01:54.80 bitrate=
588.8kbits/s dup=1508 drop=0 speed= 1.7x
video:8217kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 0.412306%
[libx264 @ 0x5635dbf30100] frame I:12 Avg QP:13.70 size:110270
[libx264 @ 0x5635dbf30100] frame P:900 Avg QP:17.60 size: 6470
[libx264 @ 0x5635dbf30100] frame B:1961 Avg QP:23.12 size: 646
[libx264 @ 0x5635dbf30100] consecutive B-frames: 3.9% 14.3% 2.8% 78.9%
[libx264 @ 0x5635dbf30100] mb I I16..4: 33.3% 36.1% 30.6%
[libx264 @ 0x5635dbf30100] mb P I16..4: 1.9% 2.3% 0.5% P16..4:
7.0% 1.7% 0.8% 0.0% 0.0% skip:85.8%
[libx264 @ 0x5635dbf30100] mb B I16..4: 0.1% 0.1% 0.0% B16..8:
3.5% 0.2% 0.0% direct: 0.2% skip:95.9% L0:39.4% L1:57.9% BI: 2.7%
[libx264 @ 0x5635dbf30100] 8x8 transform intra:45.9% inter:64.1%
[libx264 @ 0x5635dbf30100] coded y,uvDC,uvAC intra: 22.5% 36.7% 15.1%
inter: 0.9% 1.6% 0.2%
[libx264 @ 0x5635dbf30100] i16 v,h,dc,p: 37% 36% 7% 19%
[libx264 @ 0x5635dbf30100] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 25% 25% 37%
2% 2% 2% 2% 2% 3%
[libx264 @ 0x5635dbf30100] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu:
35% 25% 15% 3% 6% 4% 4% 3% 3%
[libx264 @ 0x5635dbf30100] i8c dc,h,v,p: 59%
21% 15% 5%
[libx264 @ 0x5635dbf30100]
Weighted P-Frames: Y:0.4% UV:0.1%
[libx264 @
0x5635dbf30100] ref P L0: 72.1% 8.9% 13.5% 5.4% 0.0%
[libx264 @ 0x5635dbf30100] ref B L0: 80.0% 17.7% 2.3%
[libx264 @ 0x5635dbf30100] ref B L1: 96.9% 3.1%
[libx264 @ 0x5635dbf30100] kb/s:585.71
==== concat.121.def contents ====
file '/var/www/html/webroot/video/98.out.mp4'
file '/var/www/html/webroot/video/96.out.mp4'
==== ffprobe of 98.out.mp4 ====
ffprobe version 3.2.7-1~deb9u1 Copyright (c) 2007-2017 the FFmpeg developers
built with gcc 6.3.0 (Debian 6.3.0-18) 20170516
configuration: --prefix=/usr --extra-version='1~deb9u1'
--toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu
--incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping
--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-libmp3lame --enable-libopenjpeg
--enable-libopenmpt --enable-libopus --enable-libpulse
--enable-librubberband --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-omx --enable-openal
--enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883
--enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264
--enable-shared
libavutil 55. 34.101 / 55. 34.101
libavcodec 57. 64.101 / 57. 64.101
libavformat 57. 56.101 / 57. 56.101
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 '98.out.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.56.101
Duration: 00:00:21.00, start: 0.000000, bitrate: 1457 kb/s
Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p,
1920x1080, 1455 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
Metadata:
handler_name : VideoHandler
==== ffprobe of 96.out.mp4 ====
ffprobe version 3.2.7-1~deb9u1 Copyright (c) 2007-2017 the FFmpeg developers
built with gcc 6.3.0 (Debian 6.3.0-18) 20170516
configuration: --prefix=/usr --extra-version='1~deb9u1'
--toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu
--incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping
--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-libmp3lame --enable-libopenjpeg
--enable-libopenmpt --enable-libopus --enable-libpulse
--enable-librubberband --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-omx --enable-openal
--enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883
--enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264
--enable-shared
libavutil 55. 34.101 / 55. 34.101
libavcodec 57. 64.101 / 57. 64.101
libavformat 57. 56.101 / 57. 56.101
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 '96.out.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.56.101
Duration: 00:00:28.03, start: 0.000000, bitrate: 922 kb/s
Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p,
1920x1080, 919 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
Metadata:
handler_name : VideoHandler
==== ffprobe of result (121.merged.out.mp4) ====
ffprobe version 3.2.7-1~deb9u1 Copyright (c) 2007-2017 the FFmpeg developers
built with gcc 6.3.0 (Debian 6.3.0-18) 20170516
configuration: --prefix=/usr --extra-version='1~deb9u1'
--toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu
--incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping
--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-libmp3lame --enable-libopenjpeg
--enable-libopenmpt --enable-libopus --enable-libpulse
--enable-librubberband --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-omx --enable-openal
--enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883
--enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264
--enable-shared
libavutil 55. 34.101 / 55. 34.101
libavcodec 57. 64.101 / 57. 64.101
libavformat 57. 56.101 / 57. 56.101
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 '121.merged.out.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.56.101
Duration: 00:01:54.92, start: 0.000000, bitrate: 588 kb/s
Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p,
1920x1080, 585 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
Metadata:
handler_name : VideoHandler
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