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  • 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. 


    2. Mediainfo gaves same output as exiftool..

      


      3. 


    


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

    


    Thanks

    


  • 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

    


  • Bash script to convert imgs in subfolders to video (using ffmpeg and Ubuntu)

    2 novembre 2015, par mcExchange

    I’m trying to convert all files in folders given by

     allFolders.txt
    
> head folderNames.txt
    
0001 
    
0002 
    
0003 
    
0004 
    
0005 
    
...

    to a video using ffmpeg

    ffmpeg version 2.2.3 Copyright (c) 2000-2014 the FFmpeg developers  built on Apr 20 2015 13:38:52 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
    
configuration: --prefix=/home/myUsername/usr/local --enable-nonfree --enable-gpl --enable-pic --enable-shared --enable-libx264 --disable-vaapi

    According to some answers here on stackoverflow I wrote the following bash script :

    #!/bin/bash
    
while read p; do
    
    cd "$p"
    
    ffmpeg -f concat -i "allImgNames.txt" -framerate 30 -c:v libx264 -profile:v high -crf 20 -pix_fmt yuv420p output.mp4
    
    cd -
    
done < folderNames.txt

    where allImgNames.txt is a text file containing all the image names.

    The strange thing is that it works for a few videos but for the rest of the filelist it fails saying allImgNames.txt: No such file or directory, which is not true. I checked all paths several times. Also I can execute the ffmpeg ... command above manually without problems.
    I don’t know what I’m doing wrong. All file / folder names are normal (no special characters). Maybe I don’t understand enough about bash or ffmpeg.

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