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  • FFMPEG concat videos

    10 juin 2015, par Maverick

    I am unable to concat two videos using FFMPEG. The command fails on the two special videos.

    Video 1 :
    First video is generated from the image using the following command :

    ffmpeg -loop 1 -i 20150608_162807.jpg -c:v libx264 -t 3 -pix_fmt yuv420p out.mp4

    I tried to concat the above video but it did not work so, I thought to add an audio to check if it will work.

    ffmpeg -f lavfi -i aevalsrc=0 -i out.mp4 -shortest -c:v copy -c:a aac -strict experimental silent.mp4

    but even with that it did not work.

    Video 2 :
    Second video is captured from the device camera.

    Both of these videos can be downloaded from here.

    06-09 11:05:56.238  29771-30715/﹕ ffmpeg -i concat:/storage/emulated/0/DCIM/Camera/20150603_142209.mp4|/storage/emulated/0/DCIM/Camera/silent.mp4 -c copy /storage/emulated/0/DCIM/test/MIU-2015-06-09 11-05-56.mp4
    
06-09 11:05:56.268  29771-30739/﹕ WARNING: linker: ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.
    
06-09 11:05:56.278  29771-30739/﹕ ffmpeg version n2.4.2 Copyright (c) 2000-2014 the FFmpeg developers
    
06-09 11:05:56.278  29771-30739/﹕ built on Apr  8 2015 11:29:21 with gcc 4.8 (GCC)
    
06-09 11:05:56.278  29771-30739/﹕ configuration: --target-os=linux --cross-prefix=/ilovevideo/jobs/ffmpeg-android-build-publisher/workspace/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/ilovevideo/jobs/ffmpeg-android-build-publisher/workspace/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/ilovevideo/jobs/ffmpeg-android-build-publisher/workspace/ffmpeg-android/ffmpeg-pkg-config --prefix=/ilovevideo/jobs/ffmpeg-android-build-publisher/workspace/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/ilovevideo/jobs/ffmpeg-android-build-publisher/workspace/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/ilovevideo/jobs/ffmpeg-android-build-publisher/workspace/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
    
06-09 11:05:56.278  29771-30739/﹕ libavutil      54.  7.100 / 54.  7.100
    
06-09 11:05:56.278  29771-30739/﹕ libavcodec     56.  1.100 / 56.  1.100
    
06-09 11:05:56.288  29771-30739/﹕ libavformat    56.  4.101 / 56.  4.101
    
06-09 11:05:56.288  29771-30739/﹕ libavdevice    56.  0.100 / 56.  0.100
    
06-09 11:05:56.288  29771-30739/﹕ libavfilter     5.  1.100 /  5.  1.100
    
06-09 11:05:56.288  29771-30739/﹕ libswscale      3.  0.100 /  3.  0.100
    
06-09 11:05:56.288  29771-30739/﹕ libswresample   1.  1.100 /  1.  1.100
    
06-09 11:05:56.288  29771-30739/﹕ libpostproc    53.  0.100 / 53.  0.100
    
06-09 11:05:56.308  29771-30739/﹕ [mov,mp4,m4a,3gp,3g2,mj2 @ 0xb5e5a400] Found duplicated MOOV Atom. Skipped it
    
06-09 11:05:56.398  29771-30739/﹕ Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'concat:/storage/emulated/0/DCIM/Camera/20150603_142209.mp4|/storage/emulated/0/DCIM/Camera/silent.mp4':
    
06-09 11:05:56.398  29771-30739/﹕ Metadata:
    
06-09 11:05:56.398  29771-30739/﹕ creation_time   : 2015-06-03 12:22:15
    
06-09 11:05:56.398  29771-30739/﹕ major_brand     : isom
    
06-09 11:05:56.398  29771-30739/﹕ minor_version   : 512
    
06-09 11:05:56.398  29771-30739/﹕ compatible_brands: isomiso2avc1mp41
    
06-09 11:05:56.398  29771-30739/﹕ Duration: 00:00:04.80, start: 0.000000, bitrate: 13040 kb/s
    
06-09 11:05:56.398  29771-30739/﹕ Stream #0:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 1280x720, 12008 kb/s, 29.88 fps, 29.92 tbr, 90k tbn, 180k tbc (default)
    
06-09 11:05:56.398  29771-30739/﹕ Metadata:
    
06-09 11:05:56.398  29771-30739/﹕ creation_time   : 2015-06-03 12:22:15
    
06-09 11:05:56.398  29771-30739/﹕ handler_name    : VideoHandle
    
06-09 11:05:56.408  29771-30739/﹕ Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 256 kb/s (default)
    
06-09 11:05:56.408  29771-30739/﹕ Metadata:
    
06-09 11:05:56.408  29771-30739/﹕ creation_time   : 2015-06-03 12:22:15
    
06-09 11:05:56.408  29771-30739/﹕ handler_name    : SoundHandle
    
06-09 11:05:56.408  29771-30739/﹕ Output #0, mp4, to '/storage/emulated/0/DCIM/iLoveVideo/MIU-2015-06-09 11-05-56.mp4':
    
06-09 11:05:56.408  29771-30739/﹕ Metadata:
    
06-09 11:05:56.408  29771-30739/﹕ compatible_brands: isomiso2avc1mp41
    
06-09 11:05:56.408  29771-30739/﹕ major_brand     : isom
    
06-09 11:05:56.408  29771-30739/﹕ minor_version   : 512
    
06-09 11:05:56.408  29771-30739/﹕ encoder         : Lavf56.4.101
    
06-09 11:05:56.418  29771-30739/﹕ Stream #0:0(eng): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1280x720, q=2-31, 12008 kb/s, 29.88 fps, 90k tbn, 90k tbc (default)
    
06-09 11:05:56.418  29771-30739/﹕ Metadata:
    
06-09 11:05:56.418  29771-30739/﹕ creation_time   : 2015-06-03 12:22:15
    
06-09 11:05:56.418  29771-30739/﹕ handler_name    : VideoHandle
    
06-09 11:05:56.418  29771-30739/﹕ Stream #0:1(eng): Audio: aac ([64][0][0][0] / 0x0040), 48000 Hz, stereo, 256 kb/s (default)
    
06-09 11:05:56.418  29771-30739/﹕ Metadata:
    
06-09 11:05:56.418  29771-30739/﹕ creation_time   : 2015-06-03 12:22:15
    
06-09 11:05:56.418  29771-30739/﹕ handler_name    : SoundHandle
    
06-09 11:05:56.418  29771-30739/﹕ Stream mapping:
    
06-09 11:05:56.418  29771-30739/﹕ Stream #0:0 -> #0:0 (copy)
    
06-09 11:05:56.418  29771-30739/﹕ Stream #0:1 -> #0:1 (copy)
    
06-09 11:05:56.418  29771-30739/﹕ Press [q] to stop, [?] for help
    
06-09 11:05:56.548  29771-30739/﹕ frame=  142 fps=0.0 q=-1.0 Lsize=    7121kB time=00:00:04.80 bitrate=12153.1kbits/s
    
06-09 11:05:56.558  29771-30739/﹕ video:6965kB audio:150kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.078725%

    Update 1 :
    The concat protocol doesn’t work with mp4s. So, I tried the other approaches.

    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

    but still it didn’t work.

    Update 2 :
    I have also used concat demuxer approach but it did not work as well.

  • how to convert mp4 to swf using ffmpeg ?

    10 juin 2015, par Ray

    the command "ffmpeg -i 11.mp4 out.swf" is work.but when i try to convert other mp4 . it’s wrong .
    the output info

     D:\ffmpeg>ffmpeg -i test.mp4  out3.swf
    
ffmpeg version N-71042-g83020f8 Copyright (c) 2000-2015 the FFmpeg developers
    
  built with gcc 4.9.2 (GCC)
    
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls
    
libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librt
    
enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-
    
  libavutil      54. 20.100 / 54. 20.100
    
  libavcodec     56. 29.100 / 56. 29.100
    
  libavformat    56. 26.101 / 56. 26.101
    
  libavdevice    56.  4.100 / 56.  4.100
    
  libavfilter     5. 13.101 /  5. 13.101
    
  libswscale      3.  1.101 /  3.  1.101
    
  libswresample   1.  1.100 /  1.  1.100
    
  libpostproc    53.  3.100 / 53.  3.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4':
    
  Metadata:
    
    major_brand     : M4V
    
    minor_version   : 1
    
    compatible_brands: M4V mp42isom
    
    creation_time   : 2015-05-15 09:01:41
    
  Duration: 00:00:07.25, start: 0.000000, bitrate: 4213 kb/s
    
    Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv), 480x360 [SAR 1:1 DAR 4:3], 4042 kb/s, 10 fps, 10 tbr, 20 tbn, 20 tbc (default)
    
    Metadata:
    
      creation_time   : 2015-05-15 09:01:41
    
      handler_name    : Mainconcept MP4 Video Media Handler
    
      encoder         : AVC Coding
    
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 189 kb/s (default)
    
    Metadata:
    
      creation_time   : 2015-05-15 09:01:41
    
      handler_name    : Mainconcept MP4 Sound Media Handler
    
[swf @ 000000000541f8a0] **swf does not support that sample rate, choose from (44100, 22050, 11025).**
    
Output #0, swf, to 'out3.swf':
    
  Metadata:
    
    major_brand     : M4V
    
    minor_version   : 1
    
    compatible_brands: M4V mp42isom
    
    encoder         : Lavf56.26.101
    
    Stream #0:0(eng): Video: flv1 (flv), yuv420p, 480x360 [SAR 1:1 DAR 4:3], q=2-31, 200 kb/s, 10 fps, 10 tbn, 10 tbc (default)
    
    Metadata:
    
      creation_time   : 2015-05-15 09:01:41
    
      handler_name    : Mainconcept MP4 Video Media Handler
    
      encoder         : Lavc56.29.100 flv
    
    Stream #0:1(eng): Audio: mp3 (libmp3lame), 48000 Hz, stereo, fltp (default)
    
    Metadata:
    
      creation_time   : 2015-05-15 09:01:41
    
      handler_name    : Mainconcept MP4 Sound Media Handler
    
      encoder         : Lavc56.29.100 libmp3lame
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> flv1 (flv))
    
  Stream #0:1 -> #0:1 (aac (native) -> mp3 (libmp3lame))
    
Could not write header for output file #0 (incorrect codec parameters ?): Error number -1 occurred

    error info
    1、swf does not support that sample rate, choose from (44100, 22050, 11025).
    2、 Could not write header for output file #0 (incorrect codec parameters ?) : Error number -1 occurred

    i found the answer . but
    http://superuser.com/questions/547022/how-to-convert-mp4-to-swf

    so MP4 with h264 encoder cannot convert ?

  • FFmpeg changing Keyframe Interval / GoP values while reencoding a Livestream ?

    17 juin 2015, par eCronik

    I am using ffmpeg in an nginx environment to reencode Livestreams on Ubuntu.

    So there are 2 Livestreams with the exact identical options going into the reencode. Both are streaming to a server in germany - one comes from germany, the other comes from the US eastcoast. So I have the problem, that the receiver after the reencode moans after some time about the Keyframe Interval growing higher of the stream coming from the US - until a certain point where it stops. This is not always happening in the same amount of time or to the same extent.

    This is the line I am using to reencode :

    exec_push ffmpeg -i rtmp://localhost/input/$name -c:v libx264 -preset slow -profile:v main -b:v 2175k -minrate 2175k -maxrate 2175k -bufsize 2175k -r 40 -g 80 -c:a aac -strict -2 -b:a 160k -f flv rtmp://server \-c copy -f flv rtmp://server;

    Does anybody have a clue what could cause this and how to prevent it ? Changing x264 cpu preset on the machine where the stream comes from to something faster doesn’t work, and the reencode-server is just at 50% usage with ’slow’ as well.

    Here my version info :

    ffmpeg version 2.6.3 Copyright (c) 2000-2015 the FFmpeg developers
    
built with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
    
configuration: --extra-libs=-ldl --prefix=/opt/ffmpeg --enable-avresample --disable-debug --enable-nonfree --enable-gpl --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --disable-decoder=amrnb --disable-decoder=amrwb --enable-libpulse --enable-libx264 --enable-libx265 --enable-libfdk-aac --enable-libvorbis --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libspeex --enable-libass --enable-avisynth --enable-libsoxr --enable-libxvid --enable-libvo-aacenc --enable-libvidstab
    
libavutil      54. 20.100 / 54. 20.100
    
libavcodec     56. 26.100 / 56. 26.100
    
libavformat    56. 25.101 / 56. 25.101
    
libavdevice    56.  4.100 / 56.  4.100
    
libavfilter     5. 11.102 /  5. 11.102
    
libavresample   2.  1.  0 /  2.  1.  0
    
libswscale      3.  1.101 /  3.  1.101
    
libswresample   1.  1.100 /  1.  1.100
    
libpostproc    53.  3.100 / 53.  3.100

    Thanks a bunch,
    eC

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