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Using ffmpeg for streaming video composition from Python : why the sound is cut only when streaming into a mp4 file ?
4 décembre 2017, par redantlabsI am using ffmpeg within Python for automatizing some video compositions. To do so, I am using the subprocess module of Python and run a ffmpeg command with a pipe input. This allows me to stream frame by frame the video composition from my array of raw images (numpy matrices) into ffmpeg. In the following example, I reduced the video composition to a simple video of a duration of 12 seconds. The produced ffmpeg command is :
ffmpeg -i stream_audio.mp3 -re -f rawvideo -vcodec rawvideo -s 1280x720 -pix_fmt rgb24 -r 25 -i - -map 0:a -map 1:v -y -strict -2 -f mp4 -pix_fmt yuv420p out.mp4The file stream_audio.mp3 is a well formed mp3 file corresponding to the audio output of the output mp4 file. However, the sound in the output file out.mp4 is cut 3 seconds before the end.
If I am trying to output any other format (for example avi), I do not observe this problem. The following command produces a well formed avi file.
ffmpeg -i ./stream_audio.mp3 -re -f rawvideo -vcodec rawvideo -s 1280x720 -pix_fmt rgb24 -r 25 -i - -map 0:a -map 1:v -y -b 4096k -f avi -pix_fmt yuv420p out.aviI tried to reproduce the bug with the most simple ffmpeg command without passing by Python, but did not succeed.The closest I have done is the following :
Building a raw video file with the correct specifications
ffmpeg -i samplevideo.mp4 -f rawvideo -vcodec rawvideo -acodec none -s 1280x720 -pix_fmt rgb24 -r 25 samplevideo.rawStreaming the raw video file into the ffmpeg command
cat samplevideo.raw | ffmpeg -i /tmp/stream_audio.mp3 -re -f rawvideo -vcodec rawvideo -s 1280x720 -pix_fmt rgb24 -r 25 -i - -map 0:a -map 1:v
-y -strict -2 -f mp4 -pix_fmt yuv420p -ss 00:00:00 -t 00:00:12 out.mp4Here is the version of ffmpeg I am using :
ffmpeg version 3.1.9 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 6.3.1 (GCC) 20161221 (Red Hat 6.3.1-1)
configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -m64 -mtune=generic' --extra-ldflags='-Wl,-z,relro -specs=/usr/lib/rpm/redhat/redhat-hardened-ld' --enable-bzlib --disable-crystalhd --enable-fontconfig --enable-frei0r --enable-gcrypt --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libcdio --enable-indev=jack --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libmp3lame --enable-nvenc --extra-cflags=-I/usr/include/nvenc --enable-openal --enable-opencl --enable-opengl --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libv4l2 --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-x11grab --enable-avfilter --enable-avresample --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping --shlibdir=/usr/lib64 --enable-libmfx --enable-runtime-cpudetect
libavutil 55. 28.100 / 55. 28.100
libavcodec 57. 48.101 / 57. 48.101
libavformat 57. 41.100 / 57. 41.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 47.100 / 6. 47.100
libavresample 3. 0. 0 / 3. 0. 0
libswscale 4. 1.100 / 4. 1.100
libswresample 2. 1.100 / 2. 1.100
libpostproc 54. 0.100 / 54. 0.100
Hyper fast Audio and Video encoderThe file samplevideo.mp4 can be found here : sample videos, the stream_audio.mp3 file is a simple extraction of the audio track of the samplevideo.mp4 file :
ffmpeg -i samplevideo.mp4 stream_audio.mp3Thanks for your help.
p.s : Here are the different logs of the ffmpeg commands :
Command generated by my Python script with mp4 :
Input #0, mp3, from './stream_audio.mp3':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.41.100
Duration: 00:00:29.59, start: 0.023021, bitrate: 128 kb/s
Stream #0:0: Audio: mp3, 48000 Hz, stereo, s16p, 128 kb/s
Metadata:
encoder : Lavc57.48
Input #1, rawvideo, from 'pipe:':
Duration: N/A, start: 0.000000, bitrate: 552960 kb/s
Stream #1:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 1280x720, 552960 kb/s, 25 tbr, 25 tbn, 25 tbc
[libx264 @ 0xf5cb748ac0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0xf5cb748ac0] profile High, level 3.1
[libx264 @ 0xf5cb748ac0] 264 - core 148 r2708 86b7198 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - 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=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
[mp4 @ 0xf5cb7462a0] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
Last message repeated 1 times
Output #0, mp4, to 'out.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.41.100
Stream #0:0: Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 128 kb/s
Metadata:
encoder : Lavc57.48.101 aac
Stream #0:1: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720, q=-1--1, 25 fps, 12800 tbn, 25 tbc
Metadata:
encoder : Lavc57.48.101 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream mapping:
Stream #0:0 -> #0:0 (mp3 (native) -> aac (native))
Stream #1:0 -> #0:1 (rawvideo (native) -> h264 (libx264))
[rawvideo @ 0xf5cb722860] Thread message queue blocking; consider raising the thread_queue_size option (current value: 8)
frame= 14 fps=0.0 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 27 fps= 27 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 40 fps= 26 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 52 fps= 26 q=28.0 size= 113kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 65 fps= 26 q=28.0 size= 188kB time=00:00:00.49 bitrate=3145.8kbits/s speed=0.194x
frame= 77 fps= 25 q=28.0 size= 320kB time=00:00:01.00 bitrate=2615.3kbits/s speed=0.331x
frame= 90 fps= 25 q=28.0 size= 450kB time=00:00:01.51 bitrate=2431.3kbits/s speed=0.428x
frame= 103 fps= 25 q=28.0 size= 592kB time=00:00:02.00 bitrate=2418.9kbits/s speed=0.496x
frame= 116 fps= 25 q=28.0 size= 731kB time=00:00:02.52 bitrate=2376.1kbits/s speed=0.554x
frame= 128 fps= 25 q=28.0 size= 849kB time=00:00:03.02 bitrate=2295.6kbits/s speed=0.599x
frame= 141 fps= 25 q=28.0 size= 931kB time=00:00:03.54 bitrate=2153.0kbits/s speed=0.637x
frame= 153 fps= 25 q=28.0 size= 983kB time=00:00:04.03 bitrate=1996.7kbits/s speed=0.665x
frame= 166 fps= 25 q=28.0 size= 1067kB time=00:00:04.56 bitrate=1914.5kbits/s speed=0.695x
frame= 179 fps= 25 q=28.0 size= 1123kB time=00:00:05.04 bitrate=1824.8kbits/s speed=0.712x
frame= 191 fps= 25 q=28.0 size= 1213kB time=00:00:05.54 bitrate=1791.0kbits/s speed=0.732x
frame= 204 fps= 25 q=28.0 size= 1271kB time=00:00:06.05 bitrate=1718.5kbits/s speed=0.749x
frame= 217 fps= 25 q=28.0 size= 1346kB time=00:00:06.57 bitrate=1678.1kbits/s speed=0.764x
frame= 230 fps= 25 q=28.0 size= 1452kB time=00:00:07.08 bitrate=1678.9kbits/s speed=0.778x
frame= 242 fps= 25 q=28.0 size= 1567kB time=00:00:07.59 bitrate=1690.3kbits/s speed=0.79x
frame= 255 fps= 25 q=28.0 size= 1660kB time=00:00:08.08 bitrate=1682.4kbits/s speed=0.799x
frame= 267 fps= 25 q=28.0 size= 1739kB time=00:00:08.59 bitrate=1657.1kbits/s speed=0.81x
frame= 280 fps= 25 q=28.0 size= 1751kB time=00:00:09.08 bitrate=1578.1kbits/s speed=0.817x
frame= 291 fps= 24 q=-1.0 Lsize= 1864kB time=00:00:11.52 bitrate=1325.7kbits/s speed=0.954x
video:1707kB audio:149kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.437266%
[aac @ 0xf5cb747540] Qavg: 202.422
[libx264 @ 0xf5cb748ac0] frame I:2 Avg QP:15.83 size: 78710
[libx264 @ 0xf5cb748ac0] frame P:183 Avg QP:21.13 size: 7293
[libx264 @ 0xf5cb748ac0] frame B:106 Avg QP:26.82 size: 2406
[libx264 @ 0xf5cb748ac0] consecutive B-frames: 47.8% 10.3% 2.1% 39.9%
[libx264 @ 0xf5cb748ac0] mb I I16..4: 22.1% 32.5% 45.4%
[libx264 @ 0xf5cb748ac0] mb P I16..4: 0.8% 1.4% 0.2% P16..4: 25.3% 6.3% 3.1% 0.0% 0.0% skip:62.9%
[libx264 @ 0xf5cb748ac0] mb B I16..4: 0.1% 0.2% 0.0% B16..8: 39.0% 1.7% 0.2% direct: 0.4% skip:58.5% L0:47.3% L1:49.6% BI: 3.1%
[libx264 @ 0xf5cb748ac0] 8x8 transform intra:50.3% inter:57.9%
[libx264 @ 0xf5cb748ac0] coded y,uvDC,uvAC intra: 49.5% 65.3% 23.0% inter: 7.8% 10.2% 0.5%
[libx264 @ 0xf5cb748ac0] i16 v,h,dc,p: 30% 32% 11% 27%
[libx264 @ 0xf5cb748ac0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 25% 21% 23% 4% 5% 7% 5% 5% 5%
[libx264 @ 0xf5cb748ac0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 15% 11% 8% 8% 9% 7% 12% 7%
[libx264 @ 0xf5cb748ac0] i8c dc,h,v,p: 51% 20% 21% 8%
[libx264 @ 0xf5cb748ac0] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0xf5cb748ac0] ref P L0: 79.8% 11.4% 7.6% 1.2%
[libx264 @ 0xf5cb748ac0] ref B L0: 96.9% 2.8% 0.4%
[libx264 @ 0xf5cb748ac0] ref B L1: 97.7% 2.3%
[libx264 @ 0xf5cb748ac0] kb/s:1200.72
Exiting normally, received signal 15.Command generated by my Python script with avi :
Input #0, mp3, from './stream_audio.mp3':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.41.100
Duration: 00:00:29.59, start: 0.023021, bitrate: 128 kb/s
Stream #0:0: Audio: mp3, 48000 Hz, stereo, s16p, 128 kb/s
Metadata:
encoder : Lavc57.48
Input #1, rawvideo, from 'pipe:':
Duration: N/A, start: 0.000000, bitrate: 552960 kb/s
Stream #1:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 1280x720, 552960 kb/s, 25 tbr, 25 tbn, 25 tbc
Please use -b:a or -b:v, -b is ambiguous
[avi @ 0x82147c30e0] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
Last message repeated 1 times
Output #0, avi, to 'out.avi':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
ISFT : Lavf57.41.100
Stream #0:0: Audio: mp3 (libmp3lame) (U[0][0][0] / 0x0055), 48000 Hz, stereo, s16p
Metadata:
encoder : Lavc57.48.101 libmp3lame
Stream #0:1: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 1280x720, q=2-31, 4096 kb/s, 25 fps, 25 tbn, 25 tbc
Metadata:
encoder : Lavc57.48.101 mpeg4
Side data:
cpb: bitrate max/min/avg: 0/0/4096000 buffer size: 0 vbv_delay: -1
Stream mapping:
Stream #0:0 -> #0:0 (mp3 (native) -> mp3 (libmp3lame))
Stream #1:0 -> #0:1 (rawvideo (native) -> mpeg4 (native))
[rawvideo @ 0x821479f820] Thread message queue blocking; consider raising the thread_queue_size option (current value: 8)
frame= 14 fps=0.0 q=2.6 size= 553kB time=00:00:00.56 bitrate=8082.6kbits/s speed= 1.1x
frame= 27 fps= 27 q=5.4 size= 858kB time=00:00:01.08 bitrate=6507.5kbits/s speed=1.06x
frame= 40 fps= 26 q=5.9 size= 1089kB time=00:00:01.60 bitrate=5574.9kbits/s speed=1.05x
frame= 52 fps= 26 q=5.5 size= 1332kB time=00:00:02.08 bitrate=5225.6kbits/s speed=1.03x
frame= 65 fps= 26 q=4.9 size= 1582kB time=00:00:02.60 bitrate=4985.6kbits/s speed=1.03x
frame= 78 fps= 26 q=4.3 size= 1816kB time=00:00:03.12 bitrate=4768.1kbits/s speed=1.03x
frame= 90 fps= 25 q=2.8 size= 2035kB time=00:00:03.60 bitrate=4631.7kbits/s speed=1.02x
frame= 103 fps= 25 q=2.3 size= 2288kB time=00:00:04.12 bitrate=4549.8kbits/s speed=1.02x
frame= 116 fps= 25 q=2.4 size= 2558kB time=00:00:04.64 bitrate=4516.3kbits/s speed=1.02x
frame= 128 fps= 25 q=2.3 size= 2835kB time=00:00:05.12 bitrate=4535.4kbits/s speed=1.01x
frame= 141 fps= 25 q=3.1 size= 3103kB time=00:00:05.64 bitrate=4506.6kbits/s speed=1.01x
frame= 154 fps= 25 q=2.8 size= 3381kB time=00:00:06.16 bitrate=4495.9kbits/s speed=1.01x
frame= 166 fps= 25 q=3.4 size= 3648kB time=00:00:06.64 bitrate=4494.9kbits/s speed=1.01x
frame= 179 fps= 25 q=3.3 size= 3894kB time=00:00:07.16 bitrate=4455.7kbits/s speed=1.01x
frame= 192 fps= 25 q=3.2 size= 4128kB time=00:00:07.68 bitrate=4402.9kbits/s speed=1.01x
frame= 204 fps= 25 q=3.4 size= 4404kB time=00:00:08.16 bitrate=4420.9kbits/s speed=1.01x
frame= 217 fps= 25 q=2.0 size= 4592kB time=00:00:08.68 bitrate=4334.0kbits/s speed=1.01x
frame= 230 fps= 25 q=2.0 size= 4657kB time=00:00:09.20 bitrate=4147.2kbits/s speed=1.01x
frame= 242 fps= 25 q=2.0 size= 4736kB time=00:00:09.68 bitrate=4007.9kbits/s speed=1.01x
frame= 255 fps= 25 q=2.0 size= 4830kB time=00:00:10.20 bitrate=3879.0kbits/s speed=1.01x
frame= 267 fps= 25 q=2.0 size= 4953kB time=00:00:10.68 bitrate=3799.5kbits/s speed=1.01x
frame= 280 fps= 25 q=2.0 size= 5093kB time=00:00:11.20 bitrate=3722.3kbits/s speed=1.01x
frame= 291 fps= 25 q=2.0 Lsize= 5209kB time=00:00:11.68 bitrate=3650.9kbits/s speed=1.01x
video:4998kB audio:183kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.542552%
Exiting normally, received signal 15.Pure command line for mp4 format :
Input #0, mp3, from './stream_audio.mp3':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.41.100
Duration: 00:00:29.59, start: 0.023021, bitrate: 128 kb/s
Stream #0:0: Audio: mp3, 48000 Hz, stereo, s16p, 128 kb/s
Metadata:
encoder : Lavc57.48
Input #1, rawvideo, from 'pipe:':
Duration: N/A, start: 0.000000, bitrate: 552960 kb/s
Stream #1:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 1280x720, 552960 kb/s, 25 tbr, 25 tbn, 25 tbc
[libx264 @ 0x75fc583aa0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x75fc583aa0] profile High, level 3.1
[libx264 @ 0x75fc583aa0] 264 - core 148 r2708 86b7198 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - 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=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
[mp4 @ 0x75fc581280] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
Last message repeated 1 times
Output #0, mp4, to 'out.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.41.100
Stream #0:0: Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 128 kb/s
Metadata:
encoder : Lavc57.48.101 aac
Stream #0:1: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720, q=-1--1, 25 fps, 12800 tbn, 25 tbc
Metadata:
encoder : Lavc57.48.101 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream mapping:
Stream #0:0 -> #0:0 (mp3 (native) -> aac (native))
Stream #1:0 -> #0:1 (rawvideo (native) -> h264 (libx264))
[rawvideo @ 0x75fc55d840] Thread message queue blocking; consider raising the thread_queue_size option (current value: 8)
frame= 14 fps=0.0 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 27 fps= 27 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 39 fps= 26 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 52 fps= 26 q=28.0 size= 113kB time=00:00:00.00 bitrate=N/A speed= 0x
frame= 65 fps= 26 q=28.0 size= 188kB time=00:00:00.48 bitrate=3209.4kbits/s speed=0.191x
frame= 77 fps= 26 q=28.0 size= 320kB time=00:00:01.00 bitrate=2615.3kbits/s speed=0.332x
frame= 90 fps= 26 q=28.0 size= 450kB time=00:00:01.51 bitrate=2431.3kbits/s speed=0.43x
frame= 102 fps= 25 q=28.0 size= 591kB time=00:00:01.98 bitrate=2442.1kbits/s speed=0.493x
frame= 115 fps= 25 q=28.0 size= 731kB time=00:00:02.51 bitrate=2377.6kbits/s speed=0.556x
frame= 128 fps= 25 q=28.0 size= 845kB time=00:00:03.00 bitrate=2307.7kbits/s speed=0.596x
frame= 140 fps= 25 q=28.0 size= 930kB time=00:00:03.52 bitrate=2164.6kbits/s speed=0.636x
frame= 153 fps= 25 q=28.0 size= 983kB time=00:00:04.03 bitrate=1996.7kbits/s speed=0.668x
frame= 165 fps= 25 q=28.0 size= 1063kB time=00:00:04.52 bitrate=1925.2kbits/s speed=0.691x
frame= 178 fps= 25 q=28.0 size= 1122kB time=00:00:05.03 bitrate=1826.2kbits/s speed=0.714x
frame= 191 fps= 25 q=28.0 size= 1203kB time=00:00:05.52 bitrate=1783.6kbits/s speed=0.732x
frame= 203 fps= 25 q=28.0 size= 1270kB time=00:00:06.03 bitrate=1723.7kbits/s speed=0.749x
frame= 216 fps= 25 q=28.0 size= 1339kB time=00:00:06.52 bitrate=1680.5kbits/s speed=0.763x
frame= 228 fps= 25 q=28.0 size= 1443kB time=00:00:07.06 bitrate=1674.1kbits/s speed=0.779x
frame= 241 fps= 25 q=28.0 size= 1558kB time=00:00:07.55 bitrate=1690.0kbits/s speed=0.789x
frame= 254 fps= 25 q=28.0 size= 1654kB time=00:00:08.04 bitrate=1685.0kbits/s speed=0.799x
frame= 266 fps= 25 q=28.0 size= 1738kB time=00:00:08.55 bitrate=1664.6kbits/s speed=0.809x
frame= 279 fps= 25 q=28.0 size= 1750kB time=00:00:09.06 bitrate=1581.2kbits/s speed=0.818x
frame= 291 fps= 25 q=28.0 size= 1765kB time=00:00:09.55 bitrate=1512.7kbits/s speed=0.825x
frame= 300 fps= 25 q=28.0 size= 1779kB time=00:00:11.73 bitrate=1242.1kbits/s speed=0.971x
frame= 300 fps= 24 q=-1.0 Lsize= 1917kB time=00:00:12.01 bitrate=1307.2kbits/s speed=0.955x
video:1720kB audio:188kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.488004%
[aac @ 0x75fc582520] Qavg: 221.585
[libx264 @ 0x75fc583aa0] frame I:2 Avg QP:15.83 size: 78710
[libx264 @ 0x75fc583aa0] frame P:185 Avg QP:21.02 size: 7259
[libx264 @ 0x75fc583aa0] frame B:113 Avg QP:26.59 size: 2298
[libx264 @ 0x75fc583aa0] consecutive B-frames: 46.3% 10.0% 1.0% 42.7%
[libx264 @ 0x75fc583aa0] mb I I16..4: 22.1% 32.5% 45.4%
[libx264 @ 0x75fc583aa0] mb P I16..4: 0.8% 1.4% 0.2% P16..4: 25.2% 6.3% 3.1% 0.0% 0.0% skip:63.0%
[libx264 @ 0x75fc583aa0] mb B I16..4: 0.1% 0.2% 0.0% B16..8: 37.3% 1.6% 0.2% direct: 0.4% skip:60.2% L0:47.3% L1:49.6% BI: 3.0%
[libx264 @ 0x75fc583aa0] 8x8 transform intra:50.5% inter:58.1%
[libx264 @ 0x75fc583aa0] coded y,uvDC,uvAC intra: 49.4% 65.2% 22.9% inter: 7.7% 10.0% 0.5%
[libx264 @ 0x75fc583aa0] i16 v,h,dc,p: 29% 32% 11% 28%
[libx264 @ 0x75fc583aa0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 26% 21% 23% 4% 5% 6% 5% 5% 5%
[libx264 @ 0x75fc583aa0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 15% 11% 8% 8% 9% 7% 12% 7%
[libx264 @ 0x75fc583aa0] i8c dc,h,v,p: 51% 20% 21% 8%
[libx264 @ 0x75fc583aa0] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x75fc583aa0] ref P L0: 79.7% 11.4% 7.7% 1.2%
[libx264 @ 0x75fc583aa0] ref B L0: 96.8% 2.9% 0.4%
[libx264 @ 0x75fc583aa0] ref B L1: 97.7% 2.3%
[libx264 @ 0x75fc583aa0] kb/s:1173.39 -
FFmpeg skipping time after concat
19 septembre 2017, par Manul HüttingerI am trying to concatenate videos and in my resulting Videos I have the issue that at the concat edges my video is skipping/glitching.
General Workflow
in general my workflow looks like this
- Stream via ffmpeg
- capture stream and segment all 2 mins in to TS files
- concat TS file to MP4 video
- cut MP4 video at the desired Timestamps
Detailed Look at Step 4
as I am handling 2-hours+ videos I don’t want to re-encode the whole video. So I am looking for the closest I Frames to my In and Outpoint and cut 1 Frame before/after. As my result I get 3 Videos (front/middle/back). Now it is only needed to re-encode front and back and concat all three Videos.
So far the theoryGeneral Observations
As I look at my resulting video, I obeservated the following.
frontpart duration is e.g. 3.2 secs. I skip framewise through the Video and get nice and clean timestamps ( 00:00:02.620, 00:00:02:660 )
As soon as I get to my cutting edge the timestamps are skipping some frames and changing (00:00:03.200, 00:00:03.408 ,00:00:03.409). When I look only at the single frame images, their are no missing/dropped frameswhen I concat my TS files, the results contains a messed up frame rate e.g from constant 25 F/s to 25.0096 F/s
FFMPEG instructions
FRONT Video
ffmpeg -ss 232.52 -i src.mp4 -t 3.24 -filter_complex "setpts=PTS-STARTPTS" -vcodec libx264 -profile:v baseline -level 31 -bf 0 -f mp4 -y front.mp4
ffmpeg version n3.3 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
configuration: --prefix=/usr --extra-cflags=-I/usr/include --extra-ldflags=-L/usr/lib --bindir=/usr/local/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-libssh --enable-openssl
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'src.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.33.100
Duration: 01:06:00.33, start: 0.000000, bitrate: 610 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x464 [SAR 1:1 DAR 80:29], 537 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 65 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 (h264) -> setpts (graph 0)
setpts (graph 0) -> Stream #0:0 (libx264)
Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 0x31ea160] using SAR=1/1
[libx264 @ 0x31ea160] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX LZCNT
[libx264 @ 0x31ea160] profile Constrained Baseline, level 3.1
[libx264 @ 0x31ea160] 264 - core 148 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options: cabac=0 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=3 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 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 'front.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.71.100
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x464 [SAR 1:1 DAR 80:29], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
Metadata:
encoder : Lavc57.89.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, mono, fltp, 69 kb/s (default)
Metadata:
handler_name : SoundHandler
encoder : Lavc57.89.100 aac
frame= 81 fps= 31 q=-1.0 Lsize= 151kB time=00:00:03.25 bitrate= 379.5kbits/s speed=1.23x
video:119kB audio:28kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.531915%
[libx264 @ 0x31ea160] frame I:1 Avg QP:17.43 size: 38268
[libx264 @ 0x31ea160] frame P:80 Avg QP:21.05 size: 1038
[libx264 @ 0x31ea160] mb I I16..4: 71.4% 0.0% 28.6%
[libx264 @ 0x31ea160] mb P I16..4: 0.2% 0.0% 0.0% P16..4: 7.8% 1.8% 0.6% 0.0% 0.0% skip:89.6%
[libx264 @ 0x31ea160] coded y,uvDC,uvAC intra: 21.8% 40.8% 23.1% inter: 1.6% 4.2% 0.2%
[libx264 @ 0x31ea160] i16 v,h,dc,p: 66% 25% 5% 4%
[libx264 @ 0x31ea160] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 30% 28% 15% 4% 4% 5% 4% 5% 4%
[libx264 @ 0x31ea160] i8c dc,h,v,p: 51% 24% 21% 4%
[libx264 @ 0x31ea160] ref P L0: 74.3% 15.2% 10.5%
[libx264 @ 0x31ea160] kb/s:299.56
[aac @ 0x31edfa0] Qavg: 123.323MIDDLE Video
ffmpeg -ss 235.88 -i src.mp4 -c copy -t 1492.96 -f mp4 -y middle.mp4
ffmpeg version n3.3 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
configuration: --prefix=/usr --extra-cflags=-I/usr/include --extra-ldflags=-L/usr/lib --bindir=/usr/local/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-libssh --enable-openssl
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'src.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.33.100
Duration: 01:06:00.33, start: 0.000000, bitrate: 610 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x464 [SAR 1:1 DAR 80:29], 537 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 65 kb/s (default)
Metadata:
handler_name : SoundHandler
Output #0, mp4, to 'middle.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.71.100
Stream #0:0(und): Video: h264 (Main) ([33][0][0][0] / 0x0021), yuv420p, 1280x464 [SAR 1:1 DAR 80:29], q=2-31, 537 kb/s, 25 fps, 25 tbr, 90k tbn, 90k tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, mono, fltp, 65 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame=37329 fps=16333 q=-1.0 Lsize= 113774kB time=00:24:52.95 bitrate= 624.3kbits/s speed= 653x
video:100359kB audio:12095kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.173957%BACK Video
ffmpeg -ss 1728.88 -i 'src.mp4' -t 3.9199999999998 -filter_complex "setpts=PTS-STARTPTS" -vcodec libx264 -profile:v baseline -level 31 -bf 0 -f mp4 -y back.mp4
ffmpeg version n3.3 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
configuration: --prefix=/usr --extra-cflags=-I/usr/include --extra-ldflags=-L/usr/lib --bindir=/usr/local/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-libssh --enable-openssl
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'src.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.33.100
Duration: 01:06:00.33, start: 0.000000, bitrate: 610 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x464 [SAR 1:1 DAR 80:29], 537 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 65 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 (h264) -> setpts (graph 0)
setpts (graph 0) -> Stream #0:0 (libx264)
Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 0x2672160] using SAR=1/1
[libx264 @ 0x2672160] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX LZCNT
[libx264 @ 0x2672160] profile Constrained Baseline, level 3.1
[libx264 @ 0x2672160] 264 - core 148 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options: cabac=0 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=3 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 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 'back.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.71.100
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x464 [SAR 1:1 DAR 80:29], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
Metadata:
encoder : Lavc57.89.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, mono, fltp, 69 kb/s (default)
Metadata:
handler_name : SoundHandler
encoder : Lavc57.89.100 aac
frame= 98 fps= 27 q=-1.0 Lsize= 268kB time=00:00:03.92 bitrate= 559.2kbits/s speed=1.07x
video:230kB audio:33kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.538479%
[libx264 @ 0x2672160] frame I:1 Avg QP:19.57 size:112129
[libx264 @ 0x2672160] frame P:97 Avg QP:21.68 size: 1270
[libx264 @ 0x2672160] mb I I16..4: 35.4% 0.0% 64.6%
[libx264 @ 0x2672160] mb P I16..4: 0.2% 0.0% 0.1% P16..4: 6.9% 2.0% 0.8% 0.0% 0.0% skip:90.1%
[libx264 @ 0x2672160] coded y,uvDC,uvAC intra: 54.4% 69.1% 54.2% inter: 2.0% 3.6% 0.3%
[libx264 @ 0x2672160] i16 v,h,dc,p: 63% 23% 8% 6%
[libx264 @ 0x2672160] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 26% 17% 11% 6% 8% 9% 7% 8% 8%
[libx264 @ 0x2672160] i8c dc,h,v,p: 50% 18% 24% 7%
[libx264 @ 0x2672160] ref P L0: 81.8% 11.5% 6.7%
[libx264 @ 0x2672160] kb/s:480.15
[aac @ 0x2675fa0] Qavg: 119.994CONCAT Videos
ffmpeg -f concat -safe 0 -i concat.txt -c copy -r 25 -y /concat.mp4
ffmpeg version n3.3 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
configuration: --prefix=/usr --extra-cflags=-I/usr/include --extra-ldflags=-L/usr/lib --bindir=/usr/local/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-libssh --enable-openssl
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
Input #0, concat, from 'concat.txt':
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #0:0: Video: h264 (Constrained Baseline) ([27][0][0][0] / 0x001B), yuv420p(progressive), 1280x464 [SAR 1:1 DAR 80:29], 25 fps, 25 tbr, 90k tbn, 50 tbc
Stream #0:1(und): Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, mono, fltp, 74 kb/s
Output #0, mp4, to 'concat.mp4':
Metadata:
encoder : Lavf57.71.100
Stream #0:0: Video: h264 (Constrained Baseline) ([33][0][0][0] / 0x0021), yuv420p(progressive), 1280x464 [SAR 1:1 DAR 80:29], q=2-31, 25 fps, 25 tbr, 12800 tbn, 25 tbc
Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, mono, fltp, 74 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame=37508 fps=7256 q=-1.0 Lsize= 114285kB time=00:25:00.59 bitrate= 623.9kbits/s speed= 290x
video:100672kB audio:12598kB subtitle:0kB other streams:0kB global headers:1kB muxing overhead: 0.896435%
If needed I can provide samples.
-
How to combine multiple images and multiple audio files into one video with ffmpeg ?
14 mars, par nachocabI have two images
image1.pngandimage2.png, they both have the same dimensions. I also have two audio filesaudio1.wavandaudio2.wavthey each have different lengths. I want to make a video that showsimage1.pngduringaudio1.wavand thenimage2.pngoveraudio2.wav.


I've tried two methods, but they don't work. The images show correctly, but the durations are not synced with the audio.



Method 1 : create videos separately and combine them :



image1 => video1



ffmpeg -loop 1 \
 -y \
 -i "image1.png" \
 -i "audio1.wav" \
 -c:v libx264 -tune stillimage -pix_fmt yuv420p \
 -c:a aac -b:a 192k \
 -shortest \
 "video1.mp4"

ffmpeg version 3.3.3 Copyright (c) 2000-2017 the FFmpeg developers
 built with Apple LLVM version 8.0.0 (clang-800.0.38)
 configuration: --prefix=/usr/local/Cellar/ffmpeg/3.3.3 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-frei0r --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/2.2.0/include/openjpeg-2.2 --enable-nonfree --enable-vda
 libavutil 55. 58.100 / 55. 58.100
 libavcodec 57. 89.100 / 57. 89.100
 libavformat 57. 71.100 / 57. 71.100
 libavdevice 57. 6.100 / 57. 6.100
 libavfilter 6. 82.100 / 6. 82.100
 libavresample 3. 5. 0 / 3. 5. 0
 libswscale 4. 6.100 / 4. 6.100
 libswresample 2. 7.100 / 2. 7.100
 libpostproc 54. 5.100 / 54. 5.100
Input #0, png_pipe, from 'image1.png':
 Duration: N/A, bitrate: N/A
 Stream #0:0: Video: png, rgba(pc), 800x800, 25 fps, 25 tbr, 25 tbn, 25 tbc
Guessed Channel Layout for Input Stream #1.0 : stereo
Input #1, wav, from 'audio1.wav':
 Metadata:
 title : untitled
 track : 1
 Duration: 00:00:03.70, bitrate: 1411 kb/s
 Stream #1:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, s16, 1411 kb/s
Stream mapping:
 Stream #0:0 -> #0:0 (png (native) -> h264 (libx264))
 Stream #1:0 -> #0:1 (pcm_s16le (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 0x7fead980bc00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x7fead980bc00] profile High, level 3.1
[libx264 @ 0x7fead980bc00] 264 - core 148 r2795 aaa9aa8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:-3:-3 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=2.00:0.70 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-4 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=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=1:1.20
Output #0, mp4, to 'video1.mp4':
 Metadata:
 encoder : Lavf57.71.100
 Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p(progressive), 800x800, q=-1--1, 25 fps, 12800 tbn, 25 tbc
 Metadata:
 encoder : Lavc57.89.100 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, 192 kb/s
 Metadata:
 encoder : Lavc57.89.100 aac
frame= 151 fps=0.0 q=-1.0 Lsize= 106kB time=00:00:05.92 bitrate= 146.6kbits/s speed=6.73x
video:13kB audio:87kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 5.016360%
[libx264 @ 0x7fead980bc00] frame I:1 Avg QP:14.87 size: 5746
[libx264 @ 0x7fead980bc00] frame P:38 Avg QP:12.15 size: 51
[libx264 @ 0x7fead980bc00] frame B:112 Avg QP:16.81 size: 48
[libx264 @ 0x7fead980bc00] consecutive B-frames: 0.7% 1.3% 0.0% 98.0%
[libx264 @ 0x7fead980bc00] mb I I16..4: 46.9% 44.7% 8.4%
[libx264 @ 0x7fead980bc00] mb P I16..4: 0.0% 0.0% 0.0% P16..4: 0.0% 0.0% 0.0% 0.0% 0.0% skip:99.9%
[libx264 @ 0x7fead980bc00] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 0.2% 0.0% 0.0% direct: 0.0% skip:99.7% L0:63.5% L1:36.5% BI: 0.0%
[libx264 @ 0x7fead980bc00] 8x8 transform intra:40.7% inter:20.0%
[libx264 @ 0x7fead980bc00] coded y,uvDC,uvAC intra: 4.9% 0.0% 0.0% inter: 0.0% 0.0% 0.0%
[libx264 @ 0x7fead980bc00] i16 v,h,dc,p: 82% 13% 4% 0%
[libx264 @ 0x7fead980bc00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 74% 2% 24% 0% 0% 0% 0% 0% 0%
[libx264 @ 0x7fead980bc00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 33% 24% 32% 2% 2% 2% 2% 1% 2%
[libx264 @ 0x7fead980bc00] i8c dc,h,v,p: 100% 0% 0% 0%
[libx264 @ 0x7fead980bc00] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x7fead980bc00] ref B L0: 48.0% 52.0%
[libx264 @ 0x7fead980bc00] ref B L1: 99.5% 0.5%
[libx264 @ 0x7fead980bc00] kb/s:17.36
[aac @ 0x7fead981b400] Qavg: 535.938



image2 => video2



ffmpeg -loop 1 \
 -y \
 -i "image2.png" \
 -i "audio2.wav" \
 -c:v libx264 -tune stillimage -pix_fmt yuv420p \
 -c:a aac -b:a 192k \
 -shortest \
 "video2.mp4"

ffmpeg version 3.3.3 Copyright (c) 2000-2017 the FFmpeg developers
 built with Apple LLVM version 8.0.0 (clang-800.0.38)
 configuration: --prefix=/usr/local/Cellar/ffmpeg/3.3.3 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-frei0r --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/2.2.0/include/openjpeg-2.2 --enable-nonfree --enable-vda
 libavutil 55. 58.100 / 55. 58.100
 libavcodec 57. 89.100 / 57. 89.100
 libavformat 57. 71.100 / 57. 71.100
 libavdevice 57. 6.100 / 57. 6.100
 libavfilter 6. 82.100 / 6. 82.100
 libavresample 3. 5. 0 / 3. 5. 0
 libswscale 4. 6.100 / 4. 6.100
 libswresample 2. 7.100 / 2. 7.100
 libpostproc 54. 5.100 / 54. 5.100
Input #0, png_pipe, from 'image2.png':
 Duration: N/A, bitrate: N/A
 Stream #0:0: Video: png, rgba(pc), 800x800, 25 fps, 25 tbr, 25 tbn, 25 tbc
Guessed Channel Layout for Input Stream #1.0 : stereo
Input #1, wav, from 'audio2.wav':
 Metadata:
 title : untitled
 track : 2
 Duration: 00:00:05.49, bitrate: 1411 kb/s
 Stream #1:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, s16, 1411 kb/s
Stream mapping:
 Stream #0:0 -> #0:0 (png (native) -> h264 (libx264))
 Stream #1:0 -> #0:1 (pcm_s16le (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 0x7fa0e201ce00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x7fa0e201ce00] profile High, level 3.1
[libx264 @ 0x7fa0e201ce00] 264 - core 148 r2795 aaa9aa8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:-3:-3 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=2.00:0.70 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-4 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=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=1:1.20
Output #0, mp4, to 'video2.mp4':
 Metadata:
 encoder : Lavf57.71.100
 Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p(progressive), 800x800, q=-1--1, 25 fps, 12800 tbn, 25 tbc
 Metadata:
 encoder : Lavc57.89.100 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, 192 kb/s
 Metadata:
 encoder : Lavc57.89.100 aac
frame= 195 fps=177 q=-1.0 Lsize= 150kB time=00:00:07.68 bitrate= 160.2kbits/s speed=6.96x
video:14kB audio:129kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 4.516541%
[libx264 @ 0x7fa0e201ce00] frame I:1 Avg QP: 9.03 size: 6402
[libx264 @ 0x7fa0e201ce00] frame P:49 Avg QP: 6.59 size: 41
[libx264 @ 0x7fa0e201ce00] frame B:145 Avg QP: 9.67 size: 39
[libx264 @ 0x7fa0e201ce00] consecutive B-frames: 0.5% 1.0% 0.0% 98.5%
[libx264 @ 0x7fa0e201ce00] mb I I16..4: 54.7% 36.0% 9.3%
[libx264 @ 0x7fa0e201ce00] mb P I16..4: 0.0% 0.0% 0.0% P16..4: 0.0% 0.0% 0.0% 0.0% 0.0% skip:100.0%
[libx264 @ 0x7fa0e201ce00] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 0.2% 0.0% 0.0% direct: 0.0% skip:99.8% L0:70.1% L1:29.9% BI: 0.0%
[libx264 @ 0x7fa0e201ce00] 8x8 transform intra:36.0% inter:14.3%
[libx264 @ 0x7fa0e201ce00] coded y,uvDC,uvAC intra: 4.3% 0.0% 0.0% inter: 0.0% 0.0% 0.0%
[libx264 @ 0x7fa0e201ce00] i16 v,h,dc,p: 91% 5% 4% 0%
[libx264 @ 0x7fa0e201ce00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 72% 8% 20% 0% 0% 0% 0% 0% 0%
[libx264 @ 0x7fa0e201ce00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 36% 23% 25% 4% 3% 3% 3% 2% 2%
[libx264 @ 0x7fa0e201ce00] i8c dc,h,v,p: 100% 0% 0% 0%
[libx264 @ 0x7fa0e201ce00] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x7fa0e201ce00] ref P L0: 83.3% 8.3% 8.3%
[libx264 @ 0x7fa0e201ce00] ref B L0: 40.1% 59.9%
[libx264 @ 0x7fa0e201ce00] kb/s:14.38
[aac @ 0x7fa0e201e600] Qavg: 595.040



When I import these into Final Cut I can see that both videos get around 2:30 seconds of added silence (not present in the audio) :









concatenating video1 and video2



ffmpeg -i "video1.mp4" -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate1.ts
ffmpeg -i "video2.mp4" -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate2.ts
ffmpeg -i "concat:intermediate1.ts|intermediate2.ts" -c copy -bsf:a aac_adtstoasc "video_combined.mp4"

ffmpeg version 3.3.3 Copyright (c) 2000-2017 the FFmpeg developers
 built with Apple LLVM version 8.0.0 (clang-800.0.38)
 configuration: --prefix=/usr/local/Cellar/ffmpeg/3.3.3 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-frei0r --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/2.2.0/include/openjpeg-2.2 --enable-nonfree --enable-vda
 libavutil 55. 58.100 / 55. 58.100
 libavcodec 57. 89.100 / 57. 89.100
 libavformat 57. 71.100 / 57. 71.100
 libavdevice 57. 6.100 / 57. 6.100
 libavfilter 6. 82.100 / 6. 82.100
 libavresample 3. 5. 0 / 3. 5. 0
 libswscale 4. 6.100 / 4. 6.100
 libswresample 2. 7.100 / 2. 7.100
 libpostproc 54. 5.100 / 54. 5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video1.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf57.71.100
 Duration: 00:00:06.04, start: 0.000000, bitrate: 143 kb/s
 Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 800x800, 18 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 192 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Output #0, mpegts, to 'intermediate1.ts':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf57.71.100
 Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 800x800, q=2-31, 18 kb/s, 25 fps, 25 tbr, 90k tbn, 12800 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 192 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Stream mapping:
 Stream #0:0 -> #0:0 (copy)
 Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 151 fps=0.0 q=-1.0 Lsize= 135kB time=00:00:05.92 bitrate= 187.5kbits/s speed=2.43e+03x
video:14kB audio:87kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 34.259724%
ffmpeg version 3.3.3 Copyright (c) 2000-2017 the FFmpeg developers
 built with Apple LLVM version 8.0.0 (clang-800.0.38)
 configuration: --prefix=/usr/local/Cellar/ffmpeg/3.3.3 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-frei0r --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/2.2.0/include/openjpeg-2.2 --enable-nonfree --enable-vda
 libavutil 55. 58.100 / 55. 58.100
 libavcodec 57. 89.100 / 57. 89.100
 libavformat 57. 71.100 / 57. 71.100
 libavdevice 57. 6.100 / 57. 6.100
 libavfilter 6. 82.100 / 6. 82.100
 libavresample 3. 5. 0 / 3. 5. 0
 libswscale 4. 6.100 / 4. 6.100
 libswresample 2. 7.100 / 2. 7.100
 libpostproc 54. 5.100 / 54. 5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video2.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf57.71.100
 Duration: 00:00:07.80, start: 0.000000, bitrate: 157 kb/s
 Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 800x800, 15 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 192 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Output #0, mpegts, to 'intermediate2.ts':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf57.71.100
 Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 800x800, q=2-31, 15 kb/s, 25 fps, 25 tbr, 90k tbn, 12800 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 192 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Stream mapping:
 Stream #0:0 -> #0:0 (copy)
 Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 195 fps=0.0 q=-1.0 Lsize= 192kB time=00:00:07.68 bitrate= 204.8kbits/s speed=2.6e+03x
video:14kB audio:129kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 33.605099%
ffmpeg version 3.3.3 Copyright (c) 2000-2017 the FFmpeg developers
 built with Apple LLVM version 8.0.0 (clang-800.0.38)
 configuration: --prefix=/usr/local/Cellar/ffmpeg/3.3.3 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-frei0r --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/2.2.0/include/openjpeg-2.2 --enable-nonfree --enable-vda
 libavutil 55. 58.100 / 55. 58.100
 libavcodec 57. 89.100 / 57. 89.100
 libavformat 57. 71.100 / 57. 71.100
 libavdevice 57. 6.100 / 57. 6.100
 libavfilter 6. 82.100 / 6. 82.100
 libavresample 3. 5. 0 / 3. 5. 0
 libswscale 4. 6.100 / 4. 6.100
 libswresample 2. 7.100 / 2. 7.100
 libpostproc 54. 5.100 / 54. 5.100
Input #0, mpegts, from 'concat:intermediate1.ts|intermediate2.ts':
 Duration: 00:00:07.82, start: 1.456778, bitrate: 342 kb/s
 Program 1
 Metadata:
 service_name : Service01
 service_provider: FFmpeg
 Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(progressive), 800x800, 25 fps, 25 tbr, 90k tbn, 50 tbc
 Stream #0:1[0x101](und): Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, stereo, fltp, 169 kb/s
Output #0, mp4, to 'video_combined.mp4':
 Metadata:
 encoder : Lavf57.71.100
 Stream #0:0: Video: h264 (High) ([33][0][0][0] / 0x0021), yuv420p(progressive), 800x800, q=2-31, 25 fps, 25 tbr, 90k tbn, 90k tbc
 Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, fltp, 169 kb/s
Stream mapping:
 Stream #0:0 -> #0:0 (copy)
 Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 346 fps=0.0 q=-1.0 Lsize= 257kB time=00:00:13.74 bitrate= 153.3kbits/s speed=1.54e+03x
video:30kB audio:217kB subtitle:0kB other streams:0kB global headers:1kB muxing overhead: 4.243830%



The output of the combined video contains the extra silences, but the second audio doesn't combine properly :






Method 2 : Create combined video directly



ffmpeg -f concat -i input.txt -map 0 \
 -vcodec libx264 \
 -aprofile aac_low -acodec aac -strict experimental -cutoff 15000 -b:a 32k 
 "video_combined.mp4"



Any ideas ?


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