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• How to keep video quality same as it is after merge intro image beggining to video using ffmpeg

  13 juin 2021, par Manoj Kag

  I have selected high resolution video but once i run command the video resolution quality was changed and too poor quality's video i get as output video, but i don't would like to loose my video quality. let me share full command and complete log below :

  


  Note : libx264 encoder is not supporting iOS, I'm getting failure error so i use h264_videotoolbox so i would like to get supported command with h264_videotoolbox encoder

  


  Command :

  


  


  ffmpeg -i test.MOV -loop 1 -t 5 -i 2.jpg -f lavfi -t 5 -i anullsrc
-filter_complex "[0:v]trim=0:5,drawbox=t=fill[base] ;[1][base]scale2ref=iw:ih:force_original_aspect_ratio=decrease:flags=spline[2nd][base2] ;[base2][2nd]overlay='(W-w)/2' :'(H-h)/2'[padded] ;[padded][2:a][0:v][0:a]concat=n=2:v=1:a=1[v][a]"
-c:v h264_videotoolbox -c:a aac -map "[v]" -map "[a]" output.mp4

  


  


  Complete log

  


  ffmpeg version 4.4 Copyright (c) 2000-2021 the FFmpeg developers
  built with Apple clang version 12.0.0 (clang-1200.0.32.29)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.4_1 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox
  libavutil      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
  libavdevice    58. 13.100 / 58. 13.100
  libavfilter     7.110.100 /  7.110.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.MOV':
  Metadata:
    major_brand     : qt  
    minor_version   : 0
    compatible_brands: qt  
    creation_time   : 2021-03-07T06:36:17.000000Z
    com.apple.quicktime.location.accuracy.horizontal: 30.000000
    com.apple.quicktime.location.ISO6709: +23.1141+072.5768+061.729/
    com.apple.quicktime.make: Apple
    com.apple.quicktime.model: iPhone 6s
    com.apple.quicktime.software: 14.3
    com.apple.quicktime.creationdate: 2021-03-07T12:06:17+0530
  Duration: 00:00:29.79, start: 0.000000, bitrate: 15778 kb/s
  Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080, 15643 kb/s, 29.98 fps, 29.97 tbr, 600 tbn, 1200 tbc (default)
    Metadata:
      creation_time   : 2021-03-07T06:36:17.000000Z
      handler_name    : Core Media Video
      vendor_id       : [0][0][0][0]
      encoder         : H.264
  Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 89 kb/s (default)
    Metadata:
      creation_time   : 2021-03-07T06:36:17.000000Z
      handler_name    : Core Media Audio
      vendor_id       : [0][0][0][0]
  Stream #0:2(und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
    Metadata:
      creation_time   : 2021-03-07T06:36:17.000000Z
      handler_name    : Core Media Metadata
  Stream #0:3(und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
    Metadata:
      creation_time   : 2021-03-07T06:36:17.000000Z
      handler_name    : Core Media Metadata
  Stream #0:4(und): Data: none (mebx / 0x7862656D), 34 kb/s (default)
    Metadata:
      creation_time   : 2021-03-07T06:36:17.000000Z
      handler_name    : Core Media Metadata
Input #1, image2, from '2.jpg':
  Duration: 00:00:00.04, start: 0.000000, bitrate: 17347 kb/s
  Stream #1:0: Video: mjpeg (Baseline), yuvj444p(pc, bt470bg/unknown/unknown), 360x360 [SAR 72:72 DAR 1:1], 25 fps, 25 tbr, 25 tbn, 25 tbc
Input #2, lavfi, from 'anullsrc':
  Duration: N/A, start: 0.000000, bitrate: 705 kb/s
  Stream #2:0: Audio: pcm_u8, 44100 Hz, stereo, u8, 705 kb/s
Stream mapping:
  Stream #0:0 (h264) -> trim
  Stream #0:0 (h264) -> concat:in1:v0
  Stream #0:1 (aac) -> concat:in1:a0
  Stream #1:0 (mjpeg) -> scale2ref:default
  Stream #2:0 (pcm_u8) -> concat:in0:a0
  concat:out:v0 -> Stream #0:0 (h264_videotoolbox)
  concat:out:a0 -> Stream #0:1 (aac)
Press [q] to stop, [?] for help
[swscaler @ 0x7f976242b000] deprecated pixel format used, make sure you did set range correctly
Output #0, mp4, to 'output.mp4':
  Metadata:
    major_brand     : qt  
    minor_version   : 0
    compatible_brands: qt  
    com.apple.quicktime.creationdate: 2021-03-07T12:06:17+0530
    com.apple.quicktime.location.accuracy.horizontal: 30.000000
    com.apple.quicktime.location.ISO6709: +23.1141+072.5768+061.729/
    com.apple.quicktime.make: Apple
    com.apple.quicktime.model: iPhone 6s
    com.apple.quicktime.software: 14.3
    encoder         : Lavf58.76.100
  Stream #0:0: Video: h264 (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1920x1080, q=2-31, 200 kb/s, 29.97 fps, 30k tbn (default)
    Metadata:
      encoder         : Lavc58.134.100 h264_videotoolbox
  Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 69 kb/s (default)
    Metadata:
      encoder         : Lavc58.134.100 aac
frame=    1 fps=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   frame=   12 fps=0.0 q=-0.0 size=     256kB time=00:00:00.32 bitrate=6452.4kbits/frame=   34 fps= 32 q=-0.0 size=     256kB time=00:00:01.02 bitrate=2053.0kbits/frame=   55 fps= 35 q=-0.0 size=     256kB time=00:00:01.74 bitrate=1204.4kbits/frame=   76 fps= 37 q=-0.0 size=     256kB time=00:00:02.46 bitrate= 852.2kbits/frame=   98 fps= 38 q=-0.0 size=     256kB time=00:00:03.18 bitrate= 659.4kbits/frame=  120 fps= 39 q=-0.0 size=     256kB time=00:00:03.90 bitrate= 537.7kbits/frame=  141 fps= 39 q=-0.0 size=     512kB time=00:00:04.62 bitrate= 907.8kbits/[out_0_0 @ 0x7f975de0ae80] 100 buffers queued in out_0_0, something may be wrong.
[out_0_1 @ 0x7f975de0a5c0] 100 buffers queued in out_0_1, something may be wrong.
frame=  301 fps= 67 q=-0.0 size=     768kB time=00:00:11.09 bitrate= 566.9kbits/frame=  406 fps= 81 q=-0.0 size=    1024kB time=00:00:14.60 bitrate= 574.4kbits/frame=  509 fps= 92 q=-0.0 size=    1280kB time=00:00:18.04 bitrate= 581.2kbits/frame=  604 fps=100 q=-0.0 size=    1792kB time=00:00:21.19 bitrate= 692.5kbits/frame=  705 fps=108 q=-0.0 size=    2048kB time=00:00:24.56 bitrate= 682.9kbits/frame=  809 fps=115 q=-0.0 size=    2304kB time=00:00:28.04 bitrate= 672.9kbits/frame=  909 fps=121 q=-0.0 size=    2816kB time=00:00:31.37 bitrate= 735.4kbits/frame= 1012 fps=126 q=-0.0 size=    3072kB time=00:00:34.71 bitrate= 725.0kbits/frame= 1043 fps=127 q=-0.0 Lsize=    3288kB time=00:00:34.78 bitrate= 774.3kbits/s speed=4.23x    
video:2995kB audio:255kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.168448%
[aac @ 0x7f9760024200] Qavg: 9569.656


  


• ffmpeg minimal requirements configuration for encoding and decoding h264 files

  14 novembre 2013, par TheSquad

  I'm trying to compile ffmpeg with minimal requirements in order to encode/decode with h264.

  So far my command line configuration is :

  ./configure --disable-yasm --disable-everything --enable-encoder=libx264 --enable-encoder=libfaac --enable-decoder=h264 --enable-muxer=h264 --enable-demuxer=h264 --enable-parser=h264 --enable-protocol=file

  once compiled, I try this :

  ./ffmpeg -i ~/Dropbox/TestFile.mov -vcodec libx264 test.mp4

  but I get an error :

    ffmpeg version N-58081-g2925571 Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Nov 14 2013 15:49:58 with Apple LLVM version 5.0 (clang-500.2.76) (based on LLVM 3.3svn)
  
    configuration: --disable-yasm --disable-everything --enable-encoder=libx264 --enable-encoder=libfaac --enable-decoder=h264 --enable-muxer=h264 --enable-demuxer=h264 --enable-parser=h264 --enable-protocol=file
  
    libavutil      52. 52.100 / 52. 52.100
  
    libavcodec     55. 43.100 / 55. 43.100
  
    libavformat    55. 21.100 / 55. 21.100
  
    libavdevice    55.  5.100 / 55.  5.100
  
    libavfilter     3. 91.100 /  3. 91.100
  
    libswscale      2.  5.101 /  2.  5.101
  
    libswresample   0. 17.104 /  0. 17.104
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/mGs/Dropbox/TestFile.mov':
  
    Metadata:
  
      major_brand     : qt  
  
      minor_version   : 0
  
      compatible_brands: qt  
  
      creation_time   : 2013-06-23 14:33:09
  
      model           : iPhone 4S
  
      model-fra       : iPhone 4S
  
      encoder         : 6.0
  
      encoder-fra     : 6.0
  
      date            : 2013-06-23T16:33:09+0200
  
      date-fra        : 2013-06-23T16:33:09+0200
  
      make            : Apple
  
      make-fra        : Apple
  
    Duration: 00:00:42.09, start: 0.000000, bitrate: 20960 kb/s
  
      Stream #0:0(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080, 20880 kb/s, 29.97 fps, 29.97 tbr, 600 tbn, 1200 tbc (default)
  
      Metadata:
  
        rotate          : 180
  
        creation_time   : 2013-06-23 14:33:09
  
        handler_name    : Core Media Data Handler
  
      Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, 63 kb/s (default)
  
      Metadata:
  
        creation_time   : 2013-06-23 14:33:09
  
        handler_name    : Core Media Data Handler
  
  [NULL @ 0x7fd999802e00] Unable to find a suitable output format for 'test.mp4'
  
  test.mp4: Invalid argument

  This is probably coming from the fact that I have forgot something to enable on the ffmpeg configuration... But I can't found out what.

  The test file is a video got from iPhone 4S Camera.

• Bewildering issue - FFmpeg segment filter desyncs video

  14 mai 2018, par r_jei

  I need to segment a large (72GB) Prores video file and merge the segments to get a file identical to the original.

  ./ffmpeg -i video.mov -codec copy -f segment -segment_time 300 -segment_list list.ffcat -reset_timestamps 1 -v error chunk_%d.mov

  Unfortunately the segments that come from running this command get out of sync after a few seconds of playback with Quicktime Player. Interestingly, seeking, rewinding or fast forwarding appears to resync the video correctly for at least a few seconds.

  The following warning appears whenever a new segment is written :

  [segment @ 0x7f87ae001200] Opening 'chunk_0.mov' for writing
  
  [mov @ 0x7f87ad807200] Valid timecode frame rate must be specified. Minimum value is 1

  Yet, setting the framerate with -r 24 doesn’t help.

  Some potentially relevant metadata :

  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'A004_04121423_C001.mov':
  
    Duration: 00:13:31.25, start: 0.000000, bitrate: 710117 kb/s
  
      Stream #0:0(eng): Video: prores (apch / 0x68637061), yuv422p10le(bt709, progressive), 3840x2160, 707415 kb/s, SAR 1:1 DAR 16:9, 24 fps, 24 tbr, 24 tbn, 24 tbc (default)
  
      Metadata:
  
        creation_time   : 2018-04-12T20:23:16.000000Z
  
        handler_name    : ?Apple Alias Data Handler
  
        timecode        : 14:23:16:02
  
      Stream #0:1(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, stereo, s32 (24 bit), 2304 kb/s (default)
  
      Metadata:
  
        creation_time   : 2018-04-12T20:23:16.000000Z
  
        handler_name    : ?Apple Alias Data Handler
  
        timecode        : 14:23:16:02
  
      Stream #0:2(eng): Data: none (tmcd / 0x64636D74) (default)
  
      Metadata:
  
        creation_time   : 2018-04-12T20:23:16.000000Z
  
        handler_name    : ?Apple Alias Data Handler
  
        timecode        : 14:23:16:02
  
  
  
  Output #0, segment, to 'chunk_%d.mov':
  
      Stream #0:0(eng): Video: prores (apch / 0x68637061), yuv422p10le(bt709, progressive), 3840x2160 [SAR 1:1 DAR 16:9], q=2-31, 707415 kb/s, 24 fps, 24 tbr, 12288 tbn, 24 tbc (default)
  
      Metadata:
  
        creation_time   : 2018-04-12T20:23:16.000000Z
  
        handler_name    : ?Apple Alias Data Handler
  
        timecode        : 14:23:16:02
  
      Stream #0:1(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, stereo, s32 (24 bit), 2304 kb/s (default)
  
      Metadata:
  
        creation_time   : 2018-04-12T20:23:16.000000Z
  
        handler_name    : ?Apple Alias Data Handler
  
        timecode        : 14:23:16:02
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
    Stream #0:1 -> #0:1 (copy)

  I’m on OS X.

  Thanks so much for your time and help on this issue ! I certainly hope I’m not missing something obvious :)

  ---

  UPDATE (May 10) : Comparing the original video file with the segments, I’ve found some interesting differences. Adobe Premiere reports that the original video has the following properties :

  QuickTime Details:
  
  Movie contains 1 video track(s), 1 audio track(s), 0 closed caption track(s), **and 1 timecode track(s).**
  
  
  
  Video:
  
  There are 19470 frames with a **duration of 1/24th.**
  
  
  
  Video track 1:
  
  Duration is **0:13:31:06**
  
  
  
  Video data block #1:
  
  Frame Size = 3840 x 2160
  
  Compressor = 
  
  **Quality = Most (-2623.00)
  
  Temporal = Most (1.00)**
  
  
  
  Timecode data block #1:
  
  Start Time = 14:23:16:02
  
  Reel name = 

  On the other hand, when examining the video resulting from stitching together the segments, we find the following :

  QuickTime Details:
  
  Movie contains 1 video track(s), 1 audio track(s), 0 closed caption track(s), **and 0 timecode track(s).**
  
  
  
  Video:
  
  There are 19470 frames with a **duration of 41/1000ths.**
  
  
  
  Video track 1:
  
  Duration is **0:01:06:00**
  
  
  
  Video data block #1:
  
  Frame Size = 3840 x 2160
  
  Compressor = 
  
  **Quality = Normal (3.00)
  
  Temporal = Normal (3.00)**