delay a video in a filter chain

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delay a video in a filter chain

Michael Koch
Hi all,

I want to delay a video in a filter chain by 5 seconds, and then combine
it with the original video with hstack. I use the shortest=1 option, so
that the output contains only the duration where both videos overlap:

ffmpeg -f lavfi -i testsrc=duration=10:size=vga:rate=25 -filter_complex
split[a][b];[b]setpts=PTS+5/TB[c];[a][c]hstack=shortest=1 -y out1.mp4

This works as expected. The input length is 10s and the output length is 5s.

However, when I use the same command line with another input video, I
don't get the expected result:

ffmpeg -i 308.mov -filter_complex
split[a][b];[b]setpts=PTS+5/TB[c];[a][c]hstack=shortest=1 -y out2.mp4

The input length is 24.22s and the output length is the same. I would
have expected that the output is 5s shorter than the input. What's wrong
with my command line?

Below are the console outputs for both command lines.

Thanks,
Michael



F:\2019-06-08_Meteore>c://ffmpeg/ffmpeg -f lavfi -i
testsrc=duration=10:size=vga
:rate=25 -filter_complex
split[a][b];[b]setpts=PTS+5/TB[c];[a][c]hstack=shortest
=1 -y out1.mp4
ffmpeg version N-93686-g8019395889 Copyright (c) 2000-2019 the FFmpeg
developers

   built with gcc 8.3.1 (GCC) 20190414
   configuration: --enable-gpl --enable-version3 --enable-sdl2
--enable-fontconfi
g --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d
--enable-libb
luray --enable-libfreetype --enable-libmp3lame
--enable-libopencore-amrnb --enab
le-libopencore-amrwb --enable-libopenjpeg --enable-libopus
--enable-libshine --e
nable-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 --enab
le-libvidstab --enable-libvorbis --enable-libvo-amrwbenc
--enable-libmysofa --en
able-libspeex --enable-libxvid --enable-libaom --enable-libmfx
--enable-amf --en
able-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc
--enable-nvdec --e
nable-dxva2 --enable-avisynth --enable-libopenmpt
   libavutil      56. 26.100 / 56. 26.100
   libavcodec     58. 52.100 / 58. 52.100
   libavformat    58. 27.103 / 58. 27.103
   libavdevice    58.  7.100 / 58.  7.100
   libavfilter     7. 50.100 /  7. 50.100
   libswscale      5.  4.100 /  5.  4.100
   libswresample   3.  4.100 /  3.  4.100
   libpostproc    55.  4.100 / 55.  4.100
Input #0, lavfi, from 'testsrc=duration=10:size=vga:rate=25':
   Duration: N/A, start: 0.000000, bitrate: N/A
     Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 640x480
[SAR 1:1
  DAR 4:3], 25 tbr, 25 tbn, 25 tbc
Stream mapping:
   Stream #0:0 (rawvideo) -> split
   hstack -> Stream #0:0 (libx264)
Press [q] to stop, [?] for help
[libx264 @ 0000000003603000] using SAR=1/1
[libx264 @ 0000000003603000] using cpu capabilities: MMX2 SSE2Fast SSSE3
SSE4.2
AVX FMA3 BMI2 AVX2
[libx264 @ 0000000003603000] profile High 4:4:4 Predictive, level 3.1,
4:4:4, 8-
bit
[libx264 @ 0000000003603000] 264 - core 157 r2970 5493be8 - H.264/MPEG-4
AVC cod
ec - Copyleft 2003-2019 - http://www.videolan.org/x264.html - options:
cabac=1 r
ef=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=4 threads=6 lookahead_threads=1 sliced_threads=0
nr=0 decim
ate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3
b_pyramid=2 b_a
dapt=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 'out1.mp4':
   Metadata:
     encoder         : Lavf58.27.103
     Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv444p,
1280x480 [S
AR 1:1 DAR 8:3], q=-1--1, 25 fps, 12800 tbn, 25 tbc
     Metadata:
       encoder         : Lavc58.52.100 libx264
     Side data:
       cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
frame=   57 fps=0.0 q=28.0 size=       0kB time=00:00:05.16 bitrate=  
0.1kbits/
frame=  120 fps=117 q=28.0 size=       0kB time=00:00:07.68 bitrate=  
0.0kbits/
[Parsed_testsrc_0 @ 0000000000684800] EOF timestamp not reliable
frame=  125 fps=100 q=-1.0 Lsize=      53kB time=00:00:09.88 bitrate= 
44.2kbits
/s speed=7.92x
video:51kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing ov
erhead: 4.524411%
[libx264 @ 0000000003603000] frame I:1     Avg QP:15.02  size: 10182
[libx264 @ 0000000003603000] frame P:31    Avg QP:14.80  size:   893
[libx264 @ 0000000003603000] frame B:93    Avg QP:13.64  size:   147
[libx264 @ 0000000003603000] consecutive B-frames:  0.8%  0.0%  0.0% 99.2%
[libx264 @ 0000000003603000] mb I  I16..4: 62.1% 26.5% 11.4%
[libx264 @ 0000000003603000] mb P  I16..4:  3.0%  1.3%  0.4% P16..4: 
3.2%  3.0
%  0.2%  0.0%  0.0%    skip:88.9%
[libx264 @ 0000000003603000] mb B  I16..4:  0.1%  0.2%  0.0% B16..8: 
2.7%  0.0
%  0.0%  direct: 0.0%  skip:97.0%  L0:48.4% L1:50.3% BI: 1.2%
[libx264 @ 0000000003603000] 8x8 transform intra:31.0% inter:91.2%
[libx264 @ 0000000003603000] coded y,u,v intra: 4.1% 3.6% 3.3% inter:
0.1% 0.1%
0.1%
[libx264 @ 0000000003603000] i16 v,h,dc,p: 80% 12%  1%  8%
[libx264 @ 0000000003603000] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 55% 15% 30% 
0%  0%
  0%  0%  0%  0%
[libx264 @ 0000000003603000] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 35% 46% 14% 
1%  1%
  1%  0%  1%  0%
[libx264 @ 0000000003603000] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0000000003603000] ref P L0: 70.5%  4.1% 20.2%  5.1%
[libx264 @ 0000000003603000] ref B L0: 71.3% 26.5%  2.2%
[libx264 @ 0000000003603000] ref B L1: 94.9%  5.1%
[libx264 @ 0000000003603000] kb/s:82.53





F:\2019-06-08_Meteore>c://ffmpeg/ffmpeg -i 308.mov -filter_complex
split[a][b];[
b]setpts=PTS+5/TB[c];[a][c]hstack=shortest=1 -y out2.mp4
ffmpeg version N-93686-g8019395889 Copyright (c) 2000-2019 the FFmpeg
developers

   built with gcc 8.3.1 (GCC) 20190414
   configuration: --enable-gpl --enable-version3 --enable-sdl2
--enable-fontconfi
g --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d
--enable-libb
luray --enable-libfreetype --enable-libmp3lame
--enable-libopencore-amrnb --enab
le-libopencore-amrwb --enable-libopenjpeg --enable-libopus
--enable-libshine --e
nable-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 --enab
le-libvidstab --enable-libvorbis --enable-libvo-amrwbenc
--enable-libmysofa --en
able-libspeex --enable-libxvid --enable-libaom --enable-libmfx
--enable-amf --en
able-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc
--enable-nvdec --e
nable-dxva2 --enable-avisynth --enable-libopenmpt
   libavutil      56. 26.100 / 56. 26.100
   libavcodec     58. 52.100 / 58. 52.100
   libavformat    58. 27.103 / 58. 27.103
   libavdevice    58.  7.100 / 58.  7.100
   libavfilter     7. 50.100 /  7. 50.100
   libswscale      5.  4.100 /  5.  4.100
   libswresample   3.  4.100 /  3.  4.100
   libpostproc    55.  4.100 / 55.  4.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '308.mov':
   Metadata:
     major_brand     : qt
     minor_version   : 512
     compatible_brands: qt
     encoder         : Lavf58.27.103
   Duration: 00:00:24.22, start: 0.000000, bitrate: 168 kb/s
     Stream #0:0(eng): Video: h264 (High 4:2:2) (avc1 / 0x31637661),
yuv422p10le,
  640x480 [SAR 1:1 DAR 4:3], 33 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc
(default)

     Metadata:
       handler_name    : VideoHandler
       encoder         : Lavc58.52.100 libx264
       timecode        : 03:54:20:05
     Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
stereo, flt
p, 128 kb/s (default)
     Metadata:
       handler_name    : SoundHandler
     Stream #0:2(eng): Data: none (tmcd / 0x64636D74), 0 kb/s
     Metadata:
       handler_name    : VideoHandler
       timecode        : 03:54:20:05
Stream mapping:
   Stream #0:0 (h264) -> split (graph 0)
   hstack (graph 0) -> Stream #0:0 (libx264)
   Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 0000000000350ac0] using SAR=1/1
[libx264 @ 0000000000350ac0] using cpu capabilities: MMX2 SSE2Fast SSSE3
SSE4.2
AVX FMA3 BMI2 AVX2
[libx264 @ 0000000000350ac0] profile High 4:2:2, level 3.1, 4:2:2, 10-bit
[libx264 @ 0000000000350ac0] 264 - core 157 r2970 5493be8 - H.264/MPEG-4
AVC cod
ec - Copyleft 2003-2019 - http://www.videolan.org/x264.html - options:
cabac=1 r
ef=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 deci
mate=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=2
5 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0
qcomp=0.6
0 qpmin=0 qpmax=81 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'out2.mp4':
   Metadata:
     major_brand     : qt
     minor_version   : 512
     compatible_brands: qt
     encoder         : Lavf58.27.103
     Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661),
yuv422p10le, 1280x48
0 [SAR 1:1 DAR 8:3], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
     Metadata:
       encoder         : Lavc58.52.100 libx264
     Side data:
       cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
     Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
stereo, flt
p, 128 kb/s (default)
     Metadata:
       handler_name    : SoundHandler
       encoder         : Lavc58.52.100 aac
frame=  126 fps=0.0 q=40.0 size=       0kB time=00:00:05.14 bitrate=  
0.1kbits/
frame=  207 fps=179 q=40.0 size=       0kB time=00:00:08.38 bitrate=  
0.0kbits/
frame=  283 fps=170 q=40.0 size=       0kB time=00:00:11.43 bitrate=  
0.0kbits/
frame=  354 fps=162 q=40.0 size=     256kB time=00:00:14.27 bitrate=
147.0kbits/
frame=  421 fps=156 q=40.0 size=     256kB time=00:00:16.93 bitrate=
123.8kbits/
frame=  486 fps=151 q=40.0 size=     256kB time=00:00:19.54 bitrate=
107.3kbits/
frame=  547 fps=147 q=40.0 size=     256kB time=00:00:21.99 bitrate= 
95.4kbits/
frame=  605 fps=136 q=-1.0 Lsize=     653kB time=00:00:24.21 bitrate=
221.1kbits
/s dup=125 drop=0 speed=5.43x
video:255kB audio:380kB subtitle:0kB other streams:0kB global
headers:0kB muxing
  overhead: 3.057025%
[libx264 @ 0000000000350ac0] frame I:3     Avg QP:20.56  size: 13583
[libx264 @ 0000000000350ac0] frame P:152   Avg QP:23.61  size:  1040
[libx264 @ 0000000000350ac0] frame B:450   Avg QP:28.21  size:   136
[libx264 @ 0000000000350ac0] consecutive B-frames:  0.8%  0.0%  0.0% 99.2%
[libx264 @ 0000000000350ac0] mb I  I16..4: 54.8% 41.1%  4.0%
[libx264 @ 0000000000350ac0] mb P  I16..4:  0.6%  0.6%  0.0% P16..4:
15.1%  0.3
%  0.3%  0.0%  0.0%    skip:83.0%
[libx264 @ 0000000000350ac0] mb B  I16..4:  0.0%  0.0%  0.0% B16..8: 
0.9%  0.0
%  0.0%  direct: 1.4%  skip:97.7%  L0:38.5% L1:61.3% BI: 0.2%
[libx264 @ 0000000000350ac0] 8x8 transform intra:44.4% inter:91.2%
[libx264 @ 0000000000350ac0] coded y,uvDC,uvAC intra: 18.1% 59.8% 3.1%
inter: 0.
1% 4.3% 0.0%
[libx264 @ 0000000000350ac0] i16 v,h,dc,p: 59% 21% 15%  5%
[libx264 @ 0000000000350ac0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 14% 53% 
3%  2%
  2%  2%  2%  1%
[libx264 @ 0000000000350ac0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 18% 16% 30% 
7%  8%
  6%  7%  4%  5%
[libx264 @ 0000000000350ac0] i8c dc,h,v,p: 54% 19% 25%  2%
[libx264 @ 0000000000350ac0] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0000000000350ac0] ref P L0: 75.2% 11.6% 13.2%
[libx264 @ 0000000000350ac0] ref B L0: 79.8% 18.1%  2.1%
[libx264 @ 0000000000350ac0] ref B L1: 97.2%  2.8%
[libx264 @ 0000000000350ac0] kb/s:85.96
[aac @ 000000000033a080] Qavg: 187.870

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Re: delay a video in a filter chain

Paul B Mahol
Can not reproduce.
Make sure that audio is not taken in output duration.
Provide your input file by uploading it somewhere.

On 6/10/19, Michael Koch <[hidden email]> wrote:

> Hi all,
>
> I want to delay a video in a filter chain by 5 seconds, and then combine
> it with the original video with hstack. I use the shortest=1 option, so
> that the output contains only the duration where both videos overlap:
>
> ffmpeg -f lavfi -i testsrc=duration=10:size=vga:rate=25 -filter_complex
> split[a][b];[b]setpts=PTS+5/TB[c];[a][c]hstack=shortest=1 -y out1.mp4
>
> This works as expected. The input length is 10s and the output length is 5s.
>
> However, when I use the same command line with another input video, I
> don't get the expected result:
>
> ffmpeg -i 308.mov -filter_complex
> split[a][b];[b]setpts=PTS+5/TB[c];[a][c]hstack=shortest=1 -y out2.mp4
>
> The input length is 24.22s and the output length is the same. I would
> have expected that the output is 5s shorter than the input. What's wrong
> with my command line?
>
> Below are the console outputs for both command lines.
>
> Thanks,
> Michael
>
>
>
> F:\2019-06-08_Meteore>c://ffmpeg/ffmpeg -f lavfi -i
> testsrc=duration=10:size=vga
> :rate=25 -filter_complex
> split[a][b];[b]setpts=PTS+5/TB[c];[a][c]hstack=shortest
> =1 -y out1.mp4
> ffmpeg version N-93686-g8019395889 Copyright (c) 2000-2019 the FFmpeg
> developers
>
>    built with gcc 8.3.1 (GCC) 20190414
>    configuration: --enable-gpl --enable-version3 --enable-sdl2
> --enable-fontconfi
> g --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d
> --enable-libb
> luray --enable-libfreetype --enable-libmp3lame
> --enable-libopencore-amrnb --enab
> le-libopencore-amrwb --enable-libopenjpeg --enable-libopus
> --enable-libshine --e
> nable-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 --enab
> le-libvidstab --enable-libvorbis --enable-libvo-amrwbenc
> --enable-libmysofa --en
> able-libspeex --enable-libxvid --enable-libaom --enable-libmfx
> --enable-amf --en
> able-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc
> --enable-nvdec --e
> nable-dxva2 --enable-avisynth --enable-libopenmpt
>    libavutil      56. 26.100 / 56. 26.100
>    libavcodec     58. 52.100 / 58. 52.100
>    libavformat    58. 27.103 / 58. 27.103
>    libavdevice    58.  7.100 / 58.  7.100
>    libavfilter     7. 50.100 /  7. 50.100
>    libswscale      5.  4.100 /  5.  4.100
>    libswresample   3.  4.100 /  3.  4.100
>    libpostproc    55.  4.100 / 55.  4.100
> Input #0, lavfi, from 'testsrc=duration=10:size=vga:rate=25':
>    Duration: N/A, start: 0.000000, bitrate: N/A
>      Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 640x480
> [SAR 1:1
>   DAR 4:3], 25 tbr, 25 tbn, 25 tbc
> Stream mapping:
>    Stream #0:0 (rawvideo) -> split
>    hstack -> Stream #0:0 (libx264)
> Press [q] to stop, [?] for help
> [libx264 @ 0000000003603000] using SAR=1/1
> [libx264 @ 0000000003603000] using cpu capabilities: MMX2 SSE2Fast SSSE3
> SSE4.2
> AVX FMA3 BMI2 AVX2
> [libx264 @ 0000000003603000] profile High 4:4:4 Predictive, level 3.1,
> 4:4:4, 8-
> bit
> [libx264 @ 0000000003603000] 264 - core 157 r2970 5493be8 - H.264/MPEG-4
> AVC cod
> ec - Copyleft 2003-2019 - http://www.videolan.org/x264.html - options:
> cabac=1 r
> ef=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=4 threads=6 lookahead_threads=1 sliced_threads=0
> nr=0 decim
> ate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3
> b_pyramid=2 b_a
> dapt=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 'out1.mp4':
>    Metadata:
>      encoder         : Lavf58.27.103
>      Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv444p,
> 1280x480 [S
> AR 1:1 DAR 8:3], q=-1--1, 25 fps, 12800 tbn, 25 tbc
>      Metadata:
>        encoder         : Lavc58.52.100 libx264
>      Side data:
>        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
> frame=   57 fps=0.0 q=28.0 size=       0kB time=00:00:05.16 bitrate=
> 0.1kbits/
> frame=  120 fps=117 q=28.0 size=       0kB time=00:00:07.68 bitrate=
> 0.0kbits/
> [Parsed_testsrc_0 @ 0000000000684800] EOF timestamp not reliable
> frame=  125 fps=100 q=-1.0 Lsize=      53kB time=00:00:09.88 bitrate=
> 44.2kbits
> /s speed=7.92x
> video:51kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
> muxing ov
> erhead: 4.524411%
> [libx264 @ 0000000003603000] frame I:1     Avg QP:15.02  size: 10182
> [libx264 @ 0000000003603000] frame P:31    Avg QP:14.80  size:   893
> [libx264 @ 0000000003603000] frame B:93    Avg QP:13.64  size:   147
> [libx264 @ 0000000003603000] consecutive B-frames:  0.8%  0.0%  0.0% 99.2%
> [libx264 @ 0000000003603000] mb I  I16..4: 62.1% 26.5% 11.4%
> [libx264 @ 0000000003603000] mb P  I16..4:  3.0%  1.3%  0.4% P16..4:
> 3.2%  3.0
> %  0.2%  0.0%  0.0%    skip:88.9%
> [libx264 @ 0000000003603000] mb B  I16..4:  0.1%  0.2%  0.0% B16..8:
> 2.7%  0.0
> %  0.0%  direct: 0.0%  skip:97.0%  L0:48.4% L1:50.3% BI: 1.2%
> [libx264 @ 0000000003603000] 8x8 transform intra:31.0% inter:91.2%
> [libx264 @ 0000000003603000] coded y,u,v intra: 4.1% 3.6% 3.3% inter:
> 0.1% 0.1%
> 0.1%
> [libx264 @ 0000000003603000] i16 v,h,dc,p: 80% 12%  1%  8%
> [libx264 @ 0000000003603000] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 55% 15% 30%
> 0%  0%
>   0%  0%  0%  0%
> [libx264 @ 0000000003603000] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 35% 46% 14%
> 1%  1%
>   1%  0%  1%  0%
> [libx264 @ 0000000003603000] Weighted P-Frames: Y:0.0% UV:0.0%
> [libx264 @ 0000000003603000] ref P L0: 70.5%  4.1% 20.2%  5.1%
> [libx264 @ 0000000003603000] ref B L0: 71.3% 26.5%  2.2%
> [libx264 @ 0000000003603000] ref B L1: 94.9%  5.1%
> [libx264 @ 0000000003603000] kb/s:82.53
>
>
>
>
>
> F:\2019-06-08_Meteore>c://ffmpeg/ffmpeg -i 308.mov -filter_complex
> split[a][b];[
> b]setpts=PTS+5/TB[c];[a][c]hstack=shortest=1 -y out2.mp4
> ffmpeg version N-93686-g8019395889 Copyright (c) 2000-2019 the FFmpeg
> developers
>
>    built with gcc 8.3.1 (GCC) 20190414
>    configuration: --enable-gpl --enable-version3 --enable-sdl2
> --enable-fontconfi
> g --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d
> --enable-libb
> luray --enable-libfreetype --enable-libmp3lame
> --enable-libopencore-amrnb --enab
> le-libopencore-amrwb --enable-libopenjpeg --enable-libopus
> --enable-libshine --e
> nable-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 --enab
> le-libvidstab --enable-libvorbis --enable-libvo-amrwbenc
> --enable-libmysofa --en
> able-libspeex --enable-libxvid --enable-libaom --enable-libmfx
> --enable-amf --en
> able-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc
> --enable-nvdec --e
> nable-dxva2 --enable-avisynth --enable-libopenmpt
>    libavutil      56. 26.100 / 56. 26.100
>    libavcodec     58. 52.100 / 58. 52.100
>    libavformat    58. 27.103 / 58. 27.103
>    libavdevice    58.  7.100 / 58.  7.100
>    libavfilter     7. 50.100 /  7. 50.100
>    libswscale      5.  4.100 /  5.  4.100
>    libswresample   3.  4.100 /  3.  4.100
>    libpostproc    55.  4.100 / 55.  4.100
> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '308.mov':
>    Metadata:
>      major_brand     : qt
>      minor_version   : 512
>      compatible_brands: qt
>      encoder         : Lavf58.27.103
>    Duration: 00:00:24.22, start: 0.000000, bitrate: 168 kb/s
>      Stream #0:0(eng): Video: h264 (High 4:2:2) (avc1 / 0x31637661),
> yuv422p10le,
>   640x480 [SAR 1:1 DAR 4:3], 33 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc
> (default)
>
>      Metadata:
>        handler_name    : VideoHandler
>        encoder         : Lavc58.52.100 libx264
>        timecode        : 03:54:20:05
>      Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
> stereo, flt
> p, 128 kb/s (default)
>      Metadata:
>        handler_name    : SoundHandler
>      Stream #0:2(eng): Data: none (tmcd / 0x64636D74), 0 kb/s
>      Metadata:
>        handler_name    : VideoHandler
>        timecode        : 03:54:20:05
> Stream mapping:
>    Stream #0:0 (h264) -> split (graph 0)
>    hstack (graph 0) -> Stream #0:0 (libx264)
>    Stream #0:1 -> #0:1 (aac (native) -> aac (native))
> Press [q] to stop, [?] for help
> [libx264 @ 0000000000350ac0] using SAR=1/1
> [libx264 @ 0000000000350ac0] using cpu capabilities: MMX2 SSE2Fast SSSE3
> SSE4.2
> AVX FMA3 BMI2 AVX2
> [libx264 @ 0000000000350ac0] profile High 4:2:2, level 3.1, 4:2:2, 10-bit
> [libx264 @ 0000000000350ac0] 264 - core 157 r2970 5493be8 - H.264/MPEG-4
> AVC cod
> ec - Copyleft 2003-2019 - http://www.videolan.org/x264.html - options:
> cabac=1 r
> ef=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 deci
> mate=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=2
> 5 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0
> qcomp=0.6
> 0 qpmin=0 qpmax=81 qpstep=4 ip_ratio=1.40 aq=1:1.00
> Output #0, mp4, to 'out2.mp4':
>    Metadata:
>      major_brand     : qt
>      minor_version   : 512
>      compatible_brands: qt
>      encoder         : Lavf58.27.103
>      Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661),
> yuv422p10le, 1280x48
> 0 [SAR 1:1 DAR 8:3], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
>      Metadata:
>        encoder         : Lavc58.52.100 libx264
>      Side data:
>        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
>      Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
> stereo, flt
> p, 128 kb/s (default)
>      Metadata:
>        handler_name    : SoundHandler
>        encoder         : Lavc58.52.100 aac
> frame=  126 fps=0.0 q=40.0 size=       0kB time=00:00:05.14 bitrate=
> 0.1kbits/
> frame=  207 fps=179 q=40.0 size=       0kB time=00:00:08.38 bitrate=
> 0.0kbits/
> frame=  283 fps=170 q=40.0 size=       0kB time=00:00:11.43 bitrate=
> 0.0kbits/
> frame=  354 fps=162 q=40.0 size=     256kB time=00:00:14.27 bitrate=
> 147.0kbits/
> frame=  421 fps=156 q=40.0 size=     256kB time=00:00:16.93 bitrate=
> 123.8kbits/
> frame=  486 fps=151 q=40.0 size=     256kB time=00:00:19.54 bitrate=
> 107.3kbits/
> frame=  547 fps=147 q=40.0 size=     256kB time=00:00:21.99 bitrate=
> 95.4kbits/
> frame=  605 fps=136 q=-1.0 Lsize=     653kB time=00:00:24.21 bitrate=
> 221.1kbits
> /s dup=125 drop=0 speed=5.43x
> video:255kB audio:380kB subtitle:0kB other streams:0kB global
> headers:0kB muxing
>   overhead: 3.057025%
> [libx264 @ 0000000000350ac0] frame I:3     Avg QP:20.56  size: 13583
> [libx264 @ 0000000000350ac0] frame P:152   Avg QP:23.61  size:  1040
> [libx264 @ 0000000000350ac0] frame B:450   Avg QP:28.21  size:   136
> [libx264 @ 0000000000350ac0] consecutive B-frames:  0.8%  0.0%  0.0% 99.2%
> [libx264 @ 0000000000350ac0] mb I  I16..4: 54.8% 41.1%  4.0%
> [libx264 @ 0000000000350ac0] mb P  I16..4:  0.6%  0.6%  0.0% P16..4:
> 15.1%  0.3
> %  0.3%  0.0%  0.0%    skip:83.0%
> [libx264 @ 0000000000350ac0] mb B  I16..4:  0.0%  0.0%  0.0% B16..8:
> 0.9%  0.0
> %  0.0%  direct: 1.4%  skip:97.7%  L0:38.5% L1:61.3% BI: 0.2%
> [libx264 @ 0000000000350ac0] 8x8 transform intra:44.4% inter:91.2%
> [libx264 @ 0000000000350ac0] coded y,uvDC,uvAC intra: 18.1% 59.8% 3.1%
> inter: 0.
> 1% 4.3% 0.0%
> [libx264 @ 0000000000350ac0] i16 v,h,dc,p: 59% 21% 15%  5%
> [libx264 @ 0000000000350ac0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 14% 53%
> 3%  2%
>   2%  2%  2%  1%
> [libx264 @ 0000000000350ac0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 18% 16% 30%
> 7%  8%
>   6%  7%  4%  5%
> [libx264 @ 0000000000350ac0] i8c dc,h,v,p: 54% 19% 25%  2%
> [libx264 @ 0000000000350ac0] Weighted P-Frames: Y:0.0% UV:0.0%
> [libx264 @ 0000000000350ac0] ref P L0: 75.2% 11.6% 13.2%
> [libx264 @ 0000000000350ac0] ref B L0: 79.8% 18.1%  2.1%
> [libx264 @ 0000000000350ac0] ref B L1: 97.2%  2.8%
> [libx264 @ 0000000000350ac0] kb/s:85.96
> [aac @ 000000000033a080] Qavg: 187.870
>
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Re: delay a video in a filter chain

Michael Koch
Am 10.06.2019 um 13:11 schrieb Paul B Mahol:
> Can not reproduce.
> Make sure that audio is not taken in output duration.

I did remove the audio track from the input video, but the problem is
still the same.
> Provide your input file by uploading it somewhere.

http://www.astro-electronic.de/308.mov
(very bad quality because downconverted to VGA, but good enough to show
the problem)

Michael

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Re: delay a video in a filter chain

Paul B Mahol
On 6/10/19, Michael Koch <[hidden email]> wrote:

> Am 10.06.2019 um 13:11 schrieb Paul B Mahol:
>> Can not reproduce.
>> Make sure that audio is not taken in output duration.
>
> I did remove the audio track from the input video, but the problem is
> still the same.
>> Provide your input file by uploading it somewhere.
>
> http://www.astro-electronic.de/308.mov
> (very bad quality because downconverted to VGA, but good enough to show
> the problem)

The actual duration is correct, just metadata one is not.

>
> Michael
>
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Re: delay a video in a filter chain

Michael Koch
Am 10.06.2019 um 15:43 schrieb Paul B Mahol:

> On 6/10/19, Michael Koch <[hidden email]> wrote:
>> Am 10.06.2019 um 13:11 schrieb Paul B Mahol:
>>> Can not reproduce.
>>> Make sure that audio is not taken in output duration.
>> I did remove the audio track from the input video, but the problem is
>> still the same.
>>> Provide your input file by uploading it somewhere.
>> http://www.astro-electronic.de/308.mov
>> (very bad quality because downconverted to VGA, but good enough to show
>> the problem)
> The actual duration is correct, just metadata one is not.

But in VLC player it plays 24s. How can I create a video with the
correct length 19s?

Michael

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Re: delay a video in a filter chain

Michael Koch
In reply to this post by Michael Koch

>
> I want to delay a video in a filter chain by 5 seconds, and then
> combine it with the original video with hstack. I use the shortest=1
> option, so that the output contains only the duration where both
> videos overlap:
>
> ffmpeg -f lavfi -i testsrc=duration=10:size=vga:rate=25
> -filter_complex
> split[a][b];[b]setpts=PTS+5/TB[c];[a][c]hstack=shortest=1 -y out1.mp4
>
> This works as expected. The input length is 10s and the output length
> is 5s.
>
> However, when I use the same command line with another input video, I
> don't get the expected result:
>
> ffmpeg -i 308.mov -filter_complex
> split[a][b];[b]setpts=PTS+5/TB[c];[a][c]hstack=shortest=1 -y out2.mp4

Just found a solution myself. It works fine if the delay time is
subtracted instead of added:

ffmpeg -i 308.mov -filter_complex
split[a][b];[b]setpts=PTS-5/TB[c];[a][c]hstack=shortest=1 -y out2.mp4

Michael

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