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• Getting Error with node-media-serve and ffmpeg in heroku

  1er juillet 2021, par Anurag Gautam

  I have created a MERN app with video streaming by using node-media-serve module, with following configuration

  


  trans: {
  ffmpeg: '/vendor/ffmpeg',
   tasks: [] ,
   .....
}


  


  In local I have installed ffmpeg in trans.ffmpeg. and its working fine, But how we need to install ffmpeg in heroku .

  


  I have tried by adding heroku buildpacks
heroku buildpacks:add https://github.com/jonathanong/heroku-buildpack-ffmpeg-latest.git but its showing me error. May be some issue with config only.

  


  Heroku error :
2020-09-16T11:23:54.292896+00:00 app[web.1]: 9/16/2020 11:23:54 23 [ERROR] Node Media Trans Server startup failed. ffmpeg:/vendor/ffmpeg cannot be executed.

  


  Guys can you please help me reslove this issue

  


• FFMPEG doesn't convert with the right Create Date on a MTS to MP4 process

  2 novembre 2020, par bob338423

  I'm on the progress of convert MTS to MP4, with intact video/audio & Creation date.

  


  This is my process :

  


  I have test.MTS and I'm I'll convert it to test.MP4.

  


  Fist.. my MTS :

  


  OSX:oo bob$ f="test.MTS

OSX:oo bob$     DATE=$(exiftool -d "%Y-%m-%d %H:%M:%S"  "$f" | grep "^Date.*Original" | awk '{print $4, $5;}')

OSX:oo bob$     DATE2=$(exiftool -d "%Y-%m-%d %H:%M:%S%z"  "$f" | grep "^Date.*Original" | awk '{print $4, $5;}')

OSX:oo bob$ echo $DATE

2018-10-26 20:53:27

OSX:oo bob$ echo $DATE2

2018-10-26 20:53:27+0000


  


  I took $DATE and $DATE2 in order to have UTC and try different options.

  


  Now, let's see what Exiftool and mediainfo sees about my MTS :

  


  OSX:oo bob$ exiftool $f | grep "Date/Time"

File Modification Date/Time     : 2018:10:26 21:56:55+02:00

File Access Date/Time           : 2020:11:02 16:12:09+01:00

File Inode Change Date/Time     : 2020:11:01 02:48:49+01:00

Date/Time Original              : 2018:10:26 20:53:27+00:00





OSX:oo bob$ mediainfo $f | grep "date"

Recorded date                            : 2018-10-26 20:53:27+00:00


  


  Up to here.. all good Date is 2018-10-26 20:53:27+00:00 (so UTC or GMT+0).

  


  Now my command to convert :

  


  ffmpeg  -i  "$f" -y -acodec aac -ab 128k  -vcodec copy  -f mp4 -metadata creation_time="$DATE" "./${f%.MTS}.MP4"

ffmpeg  -i  "$f" -y -acodec aac -ab 128k  -vcodec copy  -f mp4 -metadata creation_time="$DATE2" "./${f%.MTS}_2.MP4"


  


  I tried 2 options, $DATE (whithout Timezone) and $DATE2 (With timezone). Conversion is ok, let's see the results :

  


  OSX:oo bob$ exiftool   "./${f%.MTS}.MP4" | grep "Date"

File Modification Date/Time     : 2020:11:02 14:53:24+01:00
File Access Date/Time           : 2020:11:02 16:13:48+01:00
File Inode Change Date/Time     : 2020:11:02 14:53:24+01:00
Create Date                     : 2018:10:26 18:53:27
Modify Date                     : 2018:10:26 18:53:27
Track Create Date               : 2018:10:26 18:53:27
Track Modify Date               : 2018:10:26 18:53:27
Media Create Date               : 2018:10:26 18:53:27
Media Modify Date               : 2018:10:26 18:53:27


OSX:oo bob$ exiftool   "./${f%.MTS}_2.MP4" | grep "Date"

File Modification Date/Time     : 2020:11:02 14:53:13+01:00
File Access Date/Time           : 2020:11:02 16:13:48+01:00
File Inode Change Date/Time     : 2020:11:02 14:53:13+01:00
Create Date                     : 2018:10:26 20:53:27
Modify Date                     : 2018:10:26 20:53:27
Track Create Date               : 2018:10:26 20:53:27
Track Modify Date               : 2018:10:26 20:53:27
Media Create Date               : 2018:10:26 20:53:27
Media Modify Date               : 2018:10:26 20:53:27


OSX:oo bob$ mediainfo  "./${f%.MTS}.MP4" | grep "date"

Recorded date                            : 2018-10-26 20:53:27+00:00
Encoded date                             : UTC 2018-10-26 18:53:27
Tagged date                              : UTC 2018-10-26 18:53:27
Encoded date                             : UTC 2018-10-26 18:53:27
Tagged date                              : UTC 2018-10-26 18:53:27
Encoded date                             : UTC 2018-10-26 18:53:27
Tagged date                              : UTC 2018-10-26 18:53:27



OSX:oo bob$ mediainfo  "./${f%.MTS}_2.MP4" | grep "date"

Recorded date                            : 2018-10-26 20:53:27+00:00
Encoded date                             : UTC 2018-10-26 20:53:27
Tagged date                              : UTC 2018-10-26 20:53:27
Encoded date                             : UTC 2018-10-26 20:53:27
Tagged date                              : UTC 2018-10-26 20:53:27
Encoded date                             : UTC 2018-10-26 20:53:27
Tagged date                              : UTC 2018-10-26 20:53:27


  


  Seems up to here that "./${f%.MTS}_2.MP4" (test_2.MP4) is correct, but, if we check the values in epoch :

  


  OSX:oo bob$ exiftool -d "%s" $f | grep "Date/Time"

File Modification Date/Time     : 1540583815
File Access Date/Time           : 1604329945
File Inode Change Date/Time     : 1604195329
Date/Time Original              : 1540587207

OSX:oo bob$ exiftool -d "%s"  "./${f%.MTS}.MP4" | grep "Date"

File Modification Date/Time     : 1604325204
File Access Date/Time           : 1604330053
File Inode Change Date/Time     : 1604325204
Create Date                     : 1540572807
Modify Date                     : 1540572807
Track Create Date               : 1540572807
Track Modify Date               : 1540572807
Media Create Date               : 1540572807
Media Modify Date               : 1540572807



OSX:oo bob$ exiftool -d "%s"  "./${f%.MTS}_2.MP4" | grep "Date"

File Modification Date/Time     : 1604325193
File Access Date/Time           : 1604330058
File Inode Change Date/Time     : 1604325193
Create Date                     : 1540580007
Modify Date                     : 1540580007
Track Create Date               : 1540580007        
Track Modify Date               : 1540580007
Media Create Date               : 1540580007
Media Modify Date               : 1540580007


  


  BTW, I'm now on GMT+1 (this is my local Timezone)

  


  As you can see :

  


  


  1. Conversion with Timezone (test_2.MP4) seems to be correct, except when I use epoch conversion, shows totally diferent time :

     


     Original MTS > Date/Time Original : 1540587207
MP4 without Timezone > Create Date : 1540572807
MP4 with Timezone > Create Date : 1540580007

     


     MTS >> test.MP4 >> 14400 seg (4h)

     


     MTS >> test_2.MP4 >> 7200 seg (2h)

     


  


  2. Mediainfo gaves same output as exiftool..

     


  


  


  ¿¿ ??? What is happening here ?. Why seems the same date but different with exiftool ?. Why 4h or 2h ?... I'm missing something here.

  


  Thanks

  


• ffmpeg options for encoding a video mpeg2video but with .mov extension

  20 septembre 2020, par Selene

  I just finished a project, and need to produce an output in the specific format, should be exactly the same as the format of the video I received.
The best way for me to identify the source format was to use ffprobe. Here was the output of that :

  


  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input.mov':
  Metadata:
    creation_time   : 2020-02-27T04:15:23.000000Z
  Duration: 00:00:22.13, start: 0.000000, bitrate: 111320 kb/s
    Stream #0:0(eng): Video: mpeg2video (4:2:2) (xd5c / 0x63356478), yuv422p(tv, bt709, top coded first (swapped)), 1920x1080 [SAR 1:1 DAR 16:9], 109779 kb/s, 54.94 fps, 54.94 tbr, 5494 tbn, 50 tbc (default)
    Metadata:
      creation_time   : 2020-02-27T04:15:23.000000Z
      handler_name    : Gestor de contenido de v?deo Apple
      encoder         : XDCAM HD422 1080i50 (50 Mb/s)
    Stream #0:1(eng): Audio: pcm_s16be (twos / 0x736F7774), 48000 Hz, 2 channels, s16, 1536 kb/s (default)
    Metadata:
      creation_time   : 2020-02-27T04:15:23.000000Z
      handler_name    : Gestor de contenido de sonido Apple


  


  I did a lot of video work on the above file, and as part of my pipeline, I converted the file to ProRes4444. Now I need to get this video into the same format as above.

  


  Couple of questions on the format, if I understand it correctly, mpeg2video is mpeg2, this would not normally appear as .mov file, but the source is as mov container. Why ?

  


  Does the encoder from the input format matter ? specifically the XDCAM ?

  


  Alternative to solving my problem would be to use media encoder, but even that application doesn't seem to give me options at mov + mpeg2, and if it is mov, it almost forces to use Apple ProRes to keep high resolution. Also, none of the options allow me to set fps at the source level, which is 54.94, and the closest option I have is 59.94.

  


  Please help,