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• ffmpeg : Concatenating videos with different formats with as little quality loss as possible

  12 juin 2020, par linesd

  I have sets of video segments with different formats that need to be concatenated and uploaded to a database as a single video. I need to do this with as little quality loss as possible. For example, one set is :

  



  video_1.mov - 796 frames, 432Mb,
video_2.mp4 - 913 frames, 58Mb,
video_3.mov - 625 frames, 345Mb


  



  This should be concatenated into one file :
output.mov - 2334 frames, ?Mb

  



  So far I am doing this :

  



  

  1. Convert the .mp4 to .mov with lossless encoding :

  


  



  ffmpeg -i video_2.mp4 -c:v libx264 -preset veryslow -crf 0 -c:a copy video_2.mov

  



  an error is produced during this step :

  



  [h264 @ 0x558298795760] error while decoding MB 110 37, bytestream -69483.1kbits/s speed=0.227x     
[h264 @ 0x558298795760] concealing 3659 DC, 3659 AC, 3659 MV errors in P frame


  



  This still outputs video_2.mov -  frames 913, 112Mb

  



  

  2. Use concat demuxer to combine the videos :

  


  



  ffmpeg -f concat -safe 0 -i mylist.txt -c copy output.mov

  



  where mylist.txt is :

  



  file 'video_1.mov'
file 'video_2.mov'
file 'video_3.mov'


  



  However, the concat demuxer command gives the error :

  



  [concat @ 0x561cbae96900] Could not find codec parameters for stream 2 (Unknown: none): unknown codec.Consider increasing the value for the 'analyzeduration' and 'probesize' options


  



  Followed by many lines of :

  



  [mov @ 0x555b5dca4f00] Non-monotonous DTS in output stream 0:1; previous: 1527575, current: 1168413; changing to 1527576. This may result in incorrect timestamps in the output file.


  



  The result of these steps is a output.mov which is the correct size of 432+345+112=889Mb but only has 1421 frames equal to the frames from video_1.mov - 796 frames and video_3.mov - 625 frames. When I play the concatenated version, output.mov, it freezes for the duration of the video_2.mov segment and then continues as normal for video_3.mov.

  



  Any help with this would be hugely appreciated.

  



  EDIT :

  



  ---

  



  Running ffmpeg -n -i video_1.mov -i video_2.mp4 -i video_3.mov per the comments produced :

  



  `ffmpeg version 3.4.6-0ubuntu0.18.04.1 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
  configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --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-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
  libavutil      55. 78.100 / 55. 78.100
  libavcodec     57.107.100 / 57.107.100
  libavformat    57. 83.100 / 57. 83.100
  libavdevice    57. 10.100 / 57. 10.100
  libavfilter     6.107.100 /  6.107.100
  libavresample   3.  7.  0 /  3.  7.  0
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc    54.  7.100 / 54.  7.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video_1.mov':
  Metadata:
    major_brand     : qt  
    minor_version   : 0
    compatible_brands: qt  
    creation_time   : 2019-11-16T09:57:04.000000Z
    keywords        : iMovie
    description     : 
    title           : 
    com.apple.quicktime.description: 
    com.apple.quicktime.displayname: 
    com.apple.quicktime.keywords: iMovie
    com.apple.quicktime.title:
  Duration: 00:00:31.84, start: 0.000000, bitrate: 108530 kb/s
    Stream #0:0(eng): Audio: pcm_s16be (lpcm / 0x6D63706C), 48000 Hz, stereo, s16, 1536 kb/s (default)
    Metadata:
      creation_time   : 2019-11-16T09:57:04.000000Z
      handler_name    : Core Media Data Handler
    Stream #0:1(und): Video: prores (apcn / 0x6E637061), yuv422p10le(bt709, progressive), 1920x1080, 106992 kb/s, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 25 tbn, 25 tbc (default)
    Metadata:
      creation_time   : 2019-11-16T09:57:04.000000Z
      handler_name    : Core Media Data Handler
      encoder         : Apple ProRes 422
      timecode        : 00:00:00:00
    Stream #0:2(und): Data: none (tmcd / 0x64636D74), 0 kb/s (default)
    Metadata:
      creation_time   : 2019-11-16T09:57:04.000000Z
      handler_name    : Core Media Data Handler
      timecode        : 00:00:00:00
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'video_2.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 1
    compatible_brands: mp41mp42isom
    creation_time   : 2019-11-16T09:55:40.000000Z
  Duration: 00:00:30.71, start: 0.000000, bitrate: 15320 kb/s
    Stream #1:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 165 kb/s (default)
    Metadata:
      creation_time   : 2019-11-16T09:55:40.000000Z
      handler_name    : Core Media Audio
    Stream #1:1(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1920x1080, 15277 kb/s, 29.98 fps, 29.97 tbr, 90k tbn, 60 tbc (default)
    Metadata:
      creation_time   : 2019-11-16T09:55:40.000000Z
      handler_name    : Core Media Video
Input #2, mov,mp4,m4a,3gp,3g2,mj2, from 'video_3.mov':
  Metadata:
    major_brand     : qt  
    minor_version   : 0
    compatible_brands: qt  
    creation_time   : 2019-11-16T09:57:19.000000Z
    keywords        : iMovie
    description     : 
    title           : 
    com.apple.quicktime.description: 
    com.apple.quicktime.displayname: 
    com.apple.quicktime.keywords: iMovie
    com.apple.quicktime.title:
  Duration: 00:00:25.00, start: 0.000000, bitrate: 110329 kb/s
    Stream #2:0(eng): Audio: pcm_s16be (lpcm / 0x6D63706C), 48000 Hz, stereo, s16, 1536 kb/s (default)
    Metadata:
      creation_time   : 2019-11-16T09:57:19.000000Z
      handler_name    : Core Media Data Handler
    Stream #2:1(und): Video: prores (apcn / 0x6E637061), yuv422p10le(bt709, progressive), 1920x1080, 108790 kb/s, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 25 tbn, 25 tbc (default)
    Metadata:
      creation_time   : 2019-11-16T09:57:19.000000Z
      handler_name    : Core Media Data Handler
      encoder         : Apple ProRes 422
      timecode        : 00:00:00:00
    Stream #2:2(und): Data: none (tmcd / 0x64636D74), 0 kb/s (default)
    Metadata:
      creation_time   : 2019-11-16T09:57:19.000000Z
      handler_name    : Core Media Data Handler
      timecode        : 00:00:00:00


  


• FFmpeg render portrait oriented .mov files incorrectly

  21 octobre 2020, par Polina F.

  When I try to convert a portrait oriented .mov file to mp4 file using the following commnad

  


  ffmpeg -i "2.mov" -s 720x404 -ac 2 -threads 0 -c:v libx264 -pix_fmt yuv420p -vprofile high -level 4.1 -preset medium -crf 25 -maxrate:v 1000k -b:a 128k "r5.mp4"


  


  the mp4 file that gets created looks stretched sideways
like in this example. Can't paste the .mov or the .mp4 files but the problem is clear.
What is the proper command to run to get a normal not stretched file ?

  


  

  


  the full log :

  


  C:\ffmpeg> .\ffmpeg -i "1.mov" -s 720x404 -ac 2 -threads 0 -c:v libx264 -pix_fmt yuv420p -vprofile high -level 4.1 -preset medium -crf 25 -maxrate:v 1000k -b:a 128k "r7.mp4"
ffmpeg version N-79906-gc8c14d0 Copyright (c) 2000-2016 the FFmpeg developers
  built with gcc 5.3.0 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmfx --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib
  libavutil      55. 24.100 / 55. 24.100
  libavcodec     57. 40.100 / 57. 40.100
  libavformat    57. 36.100 / 57. 36.100
  libavdevice    57.  0.101 / 57.  0.101
  libavfilter     6. 45.100 /  6. 45.100
  libswscale      4.  1.100 /  4.  1.100
  libswresample   2.  0.101 /  2.  0.101
  libpostproc    54.  0.100 / 54.  0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1.mov':
  Metadata:
    major_brand     : qt
    minor_version   : 0
    compatible_brands: qt
    creation_time   : 2019-12-30 14:54:06
    com.apple.quicktime.make: Apple
    com.apple.quicktime.model: iPhone XR
    com.apple.quicktime.software: 13.1.2
    com.apple.quicktime.creationdate: 2019-12-30T08:54:06-0600
  Duration: 00:00:09.11, start: 0.000000, bitrate: 15792 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080, 15543 kb/s, 29.97 fps, 29.97 tbr, 600 tbn (default)
    Metadata:
      rotate          : 90
      creation_time   : 2019-12-30 14:54:06
      handler_name    : Core Media Data Handler
      encoder         : H.264
    Side data:
      displaymatrix: rotation of -90.00 degrees
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 195 kb/s (default)
    Metadata:
      creation_time   : 2019-12-30 14:54:06
      handler_name    : Core Media Data Handler
    Stream #0:2(und): Data: none (mebx / 0x7862656D), 20 kb/s (default)
    Metadata:
      creation_time   : 2019-12-30 14:54:06
      handler_name    : Core Media Data Handler
    Stream #0:3(und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
    Metadata:
      creation_time   : 2019-12-30 14:54:06
      handler_name    : Core Media Data Handler
    Stream #0:4(und): Data: none (mebx / 0x7862656D), 23 kb/s (default)
    Metadata:
      creation_time   : 2019-12-30 14:54:06
      handler_name    : Core Media Data Handler
[libx264 @ 0569cc00] VBV maxrate specified, but no bufsize, ignored
[libx264 @ 0569cc00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0569cc00] profile High, level 4.1
[libx264 @ 0569cc00] 264 - core 148 r2694 3b70645 - 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=25.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
[mp4 @ 055f0460] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
    Last message repeated 1 times
Output #0, mp4, to 'r7.mp4':
  Metadata:
    major_brand     : qt
    minor_version   : 0
    compatible_brands: qt
    com.apple.quicktime.creationdate: 2019-12-30T08:54:06-0600
    com.apple.quicktime.make: Apple
    com.apple.quicktime.model: iPhone XR
    com.apple.quicktime.software: 13.1.2
    encoder         : Lavf57.36.100
    Stream #0:0(und): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 720x404, q=2-31, 29.97 fps, 30k tbn (default)
    Metadata:
      handler_name    : Core Media Data Handler
      creation_time   : 2019-12-30 14:54:06
      encoder         : Lavc57.40.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 1000000/0/0 buffer size: 0 vbv_delay: -1
    Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      creation_time   : 2019-12-30 14:54:06
      handler_name    : Core Media Data Handler
      encoder         : Lavc57.40.100 aac
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
frame=  273 fps= 43 q=-1.0 Lsize=     973kB time=00:00:09.17 bitrate= 869.4kbits/s speed=1.45x
video:817kB audio:145kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.136555%
[libx264 @ 0569cc00] frame I:2     Avg QP:26.36  size: 19820
[libx264 @ 0569cc00] frame P:69    Avg QP:26.68  size:  7276
[libx264 @ 0569cc00] frame B:202   Avg QP:30.73  size:  1459
[libx264 @ 0569cc00] consecutive B-frames:  1.1%  0.7%  0.0% 98.2%
[libx264 @ 0569cc00] mb I  I16..4:  6.9% 60.8% 32.3%
[libx264 @ 0569cc00] mb P  I16..4:  1.5%  6.2%  2.2%  P16..4: 48.0% 20.5%  8.1%  0.0%  0.0%    skip:13.5%
[libx264 @ 0569cc00] mb B  I16..4:  0.1%  0.2%  0.1%  B16..8: 46.6%  4.8%  0.7%  direct: 0.9%  skip:46.6%  L0:40.1% L1:53.0% BI: 6.9%
[libx264 @ 0569cc00] 8x8 transform intra:62.7% inter:75.7%
[libx264 @ 0569cc00] coded y,uvDC,uvAC intra: 68.9% 61.3% 22.1% inter: 13.2% 11.1% 0.7%
[libx264 @ 0569cc00] i16 v,h,dc,p:  6% 52%  6% 36%
[libx264 @ 0569cc00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 11% 33% 13%  4%  6%  3% 15%  4% 12%
[libx264 @ 0569cc00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 17% 38% 12%  3%  5%  3% 12%  2%  8%
[libx264 @ 0569cc00] i8c dc,h,v,p: 48% 39%  9%  4%
[libx264 @ 0569cc00] Weighted P-Frames: Y:8.7% UV:7.2%
[libx264 @ 0569cc00] ref P L0: 57.7% 25.2% 12.1%  4.8%  0.2%
[libx264 @ 0569cc00] ref B L0: 94.9%  3.7%  1.4%
[libx264 @ 0569cc00] ref B L1: 97.6%  2.4%
[libx264 @ 0569cc00] kb/s:734.59
[aac @ 0569abc0] Qavg: 1236.647


  


• pjsip build for iOS 5, won't make

  14 novembre 2013, par user1423591

  I retrieved the latest build from the SVN trunk on Friday and attempted to build following the directions on the getting started wiki.

  make dep seems to execute without any problems, but make fails on Samples.mak. It appears there are no rules to make any of the samples when the platform is "arm-apple-darwin9".

  If I open the Xcode project at this point, libavcodec and all it's related libraries are missing as well as LibSDL. There's not mention of a requirement to install SDL and ffmpeg beforehand, so not sure what to do there.