How to merge two mp4 videos using ffmpeg?

Question

ubuntu

I found this solution on the official site
ffmpeg -i input1.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate1.ts
ffmpeg -i input2.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate2.ts
ffmpeg -i " concat:intermediate1.ts|intermediate2.ts" -c copy -bsf:a aac_adtstoasc output.mp4
ffmpeg -i for my file outputs
ffmpeg version 2.8.11-0ubuntu0.16.04.1 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-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx =g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable- ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable- libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --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-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
WARNING: library configuration mismatch
avcodec configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx =g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable- ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable- libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --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-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv --enable-version3 --disable-doc --disable-programs --disable-avdevice --disable-avfilter --disable-avformat --disable-avresample --disable-postproc --disable-swscale --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libvo_aacenc --enable-libvo_amrwbenc--enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libvo_aacenc --enable-libvo_amrwbenc--enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libvo_aacenc --enable-libvo_amrwbenc
Libavutil 54. 31.100 / 54. 31.100
Libavcodec 56. 60.100 / 56. 60.100 LibavFormat
56. 40.101 / 56. 40.101
LIBAVDEVICE 56. 4.100 / 56. 4.100
LibavFilter 5. 40.101 / 5. 40.101
LibavResample 2. 1. 0 / 2. 1 .0
libswscale 3.1.101 / 3.1.101 libswresample
1.2.101 / 1.2.101
libpostproc 53.3.100 / 53.3.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x17c4180] Could not find codec parameters for stream 0 ( Video: h264 (avc1 / 0x31637661), none, 1280x960, 96 kb/s): unspecified pixel format
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, mov,mp4,m4a,3gp,3g2, mj2, from '23.user1.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf56.40.101
Duration: 00:05:19.02, start: 0.000000, bitrate: 223 kb/s
Stream #0:0(und): Video: h264 (avc1 / 0x31637661 ), none, 1280x960, 96 kb/s, 15 fps, 15 tbr, 15360 tbn, 30720 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D) , 48000 Hz, stereo, fltp, 128 kb/s (default)
Metadata:
handler_name : SoundHandler
At least one output file must be specified
Because of this, there is sound, but no image. How to solve the problem with the codec?

Answer 1

I struggled for a long time, but I found the answer.
Download the ffmpeg static (if your ffmpeg is lower than 3.3.3) https://johnvansickle.com/ffmpeg/ and try with it
(unzip the archive, go to the unpacked directory and run from it:)
./ffmpeg -i /home/user /Video/f1.mp4 -vcodec copy -bsf:v h264_mp4toannexb -f mpegts f1.ts
./ffmpeg -i /home/user/Video/f2.mp4 -vcodec copy -bsf:v h264_mp4toannexb -f mpegts f2.ts
. /ffmpeg -i "concat:/home/user/Video/f1.ts|/home/user/Video/f2.ts" -vcodec copy -bsf:a aac_adtstoasc FINAL.mp4