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• FFMpeg command to convert from avi to mp4 in php script

  16 septembre 2018, par user27240

  ffmpeg command to convert from avi file to mp4 file below does create mp4 file, but the quality of it is not all right at all. Fist, the sizes of the files are different, the mp4 is much smaller and about 1/10 of the avi file.
  Second, the playing time of the newly created mp4 is short lasting about 0.1 seconds where the avi file lasts about 60 seconds.

  Can anyone please help me out for the ffmpeg command to create mp4 file from avi under the directory like below ?

  for i in /xxxxxxx/xxxxxxx/*.avi; do
  
      ffmpeg -i "$i" -frames:v 1  "/xxxxxxx/xxxxxxx/$(basename "$i" .avi).mp4"
  
  done     

  Log after the attempt :

  [root@server-xxxxxxx-x ~]# for i in /xxxxxx/xxxxxxx/xxxxxxx/*.avi; do ffmpeg -i "$i" -pix_fmt yuv420p -movflags +faststart "/xxxxxx/xxxxxxx/xxxxxxx/$(basename "$i" .avi).mp4"; done
  
  ffmpeg version 3.4 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-18)
  
    configuration:
  
    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
  
    libswscale      4.  8.100 /  4.  8.100
  
    libswresample   2.  9.100 /  2.  9.100
  
   Guessed Channel Layout for Input Stream #0.1 : mono
  
   Input #0, avi, from '/xxxxxx/xxxxxxx/xxxxxxx/09141944_5b9b910308858.avi':
  
    Metadata:
  
      creation_time   : 2018-09-14 00:18:07
  
      encoder         : CanonMVI06
  
     Duration: 00:00:04.20, start: 0.000000, bitrate: 12999 kb/s
  
      Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj422p(pc,    bt470bg/unknown/unknown), 640x480, 12384 kb/s, 30 fps, 30 tbr, 30 tbn, 30 tbc
  
       Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, mono, s16, 705 kb/s
  
   File '/xxxxxx/xxxxxxx/xxxxxxx/09141944_5b9b910308858.mp4' already exists.    Overwrite ? [y/N]
  
  
  
                                                                                                                            y
  
   Stream mapping:
  
    Stream #0:0 -> #0:0 (mjpeg (native) -> mpeg4 (native))
  
    Stream #0:1 -> #0:1 (pcm_s16le (native) -> aac (native))
  
    Press [q] to stop, [?] for help
  
    [swscaler @ 0x3d75fa0] deprecated pixel format used, make sure you did set   range correctly
  
   Output #0, mp4, to '/xxxxxx/xxxxxxx/xxxxxxx/09141944_5b9b910308858.mp4':
  
    Metadata:
  
      encoder         : Lavf57.83.100
  
      Stream #0:0: Video: mpeg4 (mp4v / 0x7634706D), yuv420p, 640x480, q=2-31, 200 kb/s, 30 fps, 65521 tbn, 30 tbc
  
      Metadata:
  
        encoder         : Lavc57.107.100 mpeg4
  
       Side data:
  
        cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
  
       Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 69 kb/s
  
       Metadata:
  
         encoder         : Lavc57.107.100 aac
  
    [mp4 @ 0x3d0e6e0] Starting second pass: moving the moov atom to the  beginning of the file17x
  
    frame=  126 fps=0.0 q=11.8 Lsize=     310kB time=00:00:04.20 bitrate= 603.3kbits/s speed=6.21x
  
    video:270kB audio:35kB subtitle:0kB other streams:0kB global headers:0kB  muxing overhead: 1.605194%
  
    [aac @ 0x3d36f40] Qavg: 2283.534
  
    ffmpeg version 3.4 Copyright (c) 2000-2017 the FFmpeg developers
  
     built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-18)
  
     configuration:
  
     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
  
     libswscale      4.  8.100 /  4.  8.100
  
     libswresample   2.  9.100 /  2.  9.100
  
     Guessed Channel Layout for Input Stream #0.1 : mono
  
     Input #0, avi, from '/xxxxxx/xxxxxxx/xxxxxxx/09141945_5b9b913e87834.avi':
  
      Metadata:
  
       creation_time   : 2018-09-14 00:18:07
  
       encoder         : CanonMVI06
  
      Duration: 00:00:04.20, start: 0.000000, bitrate: 12999 kb/s
  
      Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj422p(pc,      bt470bg/unknown/unknown), 640x480, 12384 kb/s, 30 fps, 30 tbr, 30 tbn, 30 tbc
  
      Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, mono,    s16, 705 kb/s

• ffmpeg concatenate clips with broken timecode

  19 septembre 2018, par Linus679

  I’ve just received some Blackmagic footage and some of the clips are separated into chunks because of dropped frames. So let’s say I have a set of clips that looks like below for a Clip 12.

  0100_C0012_001,
  0100_C0012_002,
  0100_C0012_003,

  Is there a way to create new clip from the 3 with the name 0100_C0012 ? Also, I have to actually concatenate the clips via timecode rather then the name as the numbers seems to break at points for some reason.

  Thanks for any help.

  The info about one of the clips is as follows :

    built with Apple LLVM version 9.1.0 (clang-902.0.39.2)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/4.0.2 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-gpl --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --enable-videotoolbox --disable-lzma
  
    libavutil      56. 14.100 / 56. 14.100
  
    libavcodec     58. 18.100 / 58. 18.100
  
    libavformat    58. 12.100 / 58. 12.100
  
    libavdevice    58.  3.100 / 58.  3.100
  
    libavfilter     7. 16.100 /  7. 16.100
  
    libavresample   4.  0.  0 /  4.  0.  0
  
    libswscale      5.  1.100 /  5.  1.100
  
    libswresample   3.  1.100 /  3.  1.100
  
    libpostproc    55.  1.100 / 55.  1.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '///F_2_2018-07-06_1208_C0012_V1-0002.mov':
  
    Metadata:
  
      major_brand     : qt  
  
      minor_version   : 537199360
  
      compatible_brands: qt  
  
      creation_time   : 2018-09-18T06:53:01.000000Z
  
      timecode        : 12:08:36:15
  
    Duration: 00:00:08.00, start: 0.000000, bitrate: 36177 kb/s
  
      Stream #0:0(eng): Video: dnxhd (DNXHD) (AVdn / 0x6E645641), yuv422p(pc, bt709), 1920x1080, 36175 kb/s, SAR 1:1 DAR 16:9, 24 fps, 24 tbr, 24k tbn, 24k tbc (default)
  
      Metadata:
  
        creation_time   : 2018-09-18T06:53:01.000000Z
  
        handler_name    : Apple Alias Data Handler
  
        encoder         : Avid DNxHD Codec
  
      Stream #0:1(eng): Data: none (tmcd / 0x64636D74), 0 kb/s (default)
  
      Metadata:
  
        creation_time   : 2018-09-18T06:53:02.000000Z
  
        handler_name    : Apple Alias Data Handler
  
        timecode        : 12:08:36:15
  
  At least one output file must be specified

• FFMPEG convert from MP3 to M4A- Getting errors

  4 juin 2021, par JK81

  I'm working on Windows 10 x64, build ffmpeg-20180916-5109c38-win64-static.

  



  I have a folder of MP3 audio files that I want to convert to M4A.

  



  This is the command that I'm running :

  



  FOR /F "tokens=*" %G IN ('dir /b *.mp3') DO ffmpeg -i "%G" -map_metadata 0 -c:a aac -b:a 192000 "%~nG.m4a"

  



  This scans my bin filder and converts all files. This works great for converting video files from MOV to MP4 (using a different code string) but I keep getting errors such as :
[ipod @ 0000025507991b40] Frame rate very high for a muxer not efficiently supporting it.
Please consider specifying a lower framerate, a different muxer or -vsync 2
[libx264 @ 0000025507e45180] using SAR=1/1
[libx264 @ 0000025507e45180] MB rate (129960000) > level limit (16711680)
[libx264 @ 0000025507e45180] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
[libx264 @ 0000025507e45180] profile High 4:4:4 Predictive, level 6.2, 4:4:4, 8-bit
[libx264 @ 0000025507e45180] 264 - core 157 r2932 303c484 - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options: cabac=1 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=4 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
[ipod @ 0000025507991b40] Could not find tag for codec h264 in stream #0, codec not currently supported in container
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
Error initializing output stream 0:1 --
[aac @ 0000025507e60100] Qavg: nan
Conversion failed!

  



  What's the best way to convert to M4A ? I'm doing this to reduce disk space.