How to extract duration time from ffmpeg output

Question

To get a lot of information about a media file one can do  ffmpeg -i  lt filename gt    where it will output a lot of lines  one in particular  Duration  00 08 07 98  start  0 000000  bitrate  2080 kb s   I would like to output only 00 08 07 98  so I try  ffmpeg -i file mp4   grep Duration  sed  s Duration          start  1 g    But it prints everything  and not just the length   Even ffmpeg -i file mp4   grep Duration outputs everything   How do I get just the duration length

User · Answer

For those who want to perform the same calculations with no additional software in Windows, here is the script for command line script:

set input=video.ts

ffmpeg -i "%input%" 2> output.tmp

rem search "  Duration: HH:MM:SS.mm, start: NNNN.NNNN, bitrate: xxxx kb/s"
for /F "tokens=1,2,3,4,5,6 delims=:., " %%i in (output.tmp) do (
    if "%%i"=="Duration" call :calcLength %%j %%k %%l %%m
)
goto :EOF

:calcLength
set /A s=%3
set /A s=s+%2*60
set /A s=s+%1*60*60
set /A VIDEO_LENGTH_S = s
set /A VIDEO_LENGTH_MS = s*1000 + %4
echo Video duration %1:%2:%3.%4 = %VIDEO_LENGTH_MS%ms = %VIDEO_LENGTH_S%s

Same answer posted here: How to crop last N seconds from a TS video

User · Answer

You can use ffprobe   ffprobe -i  lt file gt  -show entries format duration -v quiet -of csv  p 0    It will output the duration in seconds  such as   154 12   Adding the -sexagesimal option will output duration as hours minutes seconds microseconds   00 02 34 12

User · Answer

I recommend using json format  it s easier for parsing  ffprobe -i your-input-file mp4 -v quiet -print format json -show format -show streams -hide banner         streams                            index   0               codec name    aac                codec long name    AAC  Advanced Audio Coding                 profile    HE-AACv2                codec type    audio                codec time base    1 44100                codec tag string     0  0  0  0                 codec tag    0x0000                sample fmt    fltp                sample rate    44100                channels   2               channel layout    stereo                bits per sample   0               r frame rate    0 0                avg frame rate    0 0                time base    1 28224000                duration ts   305349201               duration    10 818778                bit rate    27734                disposition                      default   0                   dub   0                   original   0                   comment   0                   lyrics   0                   karaoke   0                   forced   0                   hearing impaired   0                   visual impaired   0                   clean effects   0                   attached pic   0                                     format              filename    your-input-file mp4            nb streams   1           nb programs   0           format name    aac            format long name    raw ADTS AAC  Advanced Audio Coding             duration    10 818778            size    37506            bit rate    27734            probe score   51           you can find the duration information in format section  works both for video and audio

User · Answer

Best Solution  cut the export do get something like 00 05 03 22  ffmpeg -i input 2 gt  amp 1   grep Duration   cut -c 13-23

User · Answer

ffmpeg has been substituted by avconv  just substitute avconb to Louis Marascio s answer   avconv -i file mp4 2 gt  amp 1   grep Duration   sed  s Duration          start    1 g    Note  the aditional    after start to get the time alone

User · Answer

I would just do this in C   with a text file and extract the tokens   Why  I am not a linux terminal expert like the others   To set it up I would do this in Linux    ffmpeg -i  2  1   grep      mytext txt  and then run some C   app to get the data needed   Maybe extract all the important values and reformat it for further processing by using tokens  I will just have to work on my own solution and people will just make fun of me because I am a linux newbie and I do not like scripting too much

User · Answer

ffmpeg is writing that information to stderr  not stdout  Try this   ffmpeg -i file mp4 2 gt  amp 1   grep Duration   sed  s Duration          start  1 g    Notice the redirection of stderr to stdout  2 gt  amp 1  EDIT   Your sed statement isn t working either  Try this   ffmpeg -i file mp4 2 gt  amp 1   grep Duration   awk   print  2     tr -d

User · Answer

In case of one request parameter it is simplier to use mediainfo and its output formatting like this  for duration  answer in milliseconds   mediainfo --Output  General  Duration     work files testfiles  h263 aac avi    outputs  24840

User · Answer

Argh   Forget that   It looks like I have to get the cobwebs out of my C and C   programming and use that instead   I do not know all the shell tricks to get it to work  This is how far I got    ffmpeg -i myfile 2  1   grep      textdump txt  and then I would probably extract the duration with a C   app instead by extracting tokens    I am not posting the solution because I am not a nice person right now  Update - I have my approach to getting that duration time stamp   Step 1 - Get the media information on to a text file  ffprobe -i myfile 2  1   grep      textdump txt   OR  ffprobe -i myfile 2  1   awk    print      textdump txt     Step 2 - Home in on the information needed and extract it cat textdump txt    grep  Duration    awk    print  2        a out Notice the a out   That is my C code to chop off the resulting comma because the output is something like 00 00 01 33   Here is the C code that takes stdin and outputs the correct information needed  I had to take the greater and less than signs out for viewing          include stdio h      include string h     void main               by Admiral Smith Nov 3  2016     char time 80       int len      char  correct      scanf   s    time       correct    char   malloc strlen time        if   correct                printf   nmemory error            return            memcpy correct  time strlen time -1       correct strlen time     0       printf   s   correct       free correct            Now the output formats correctly like 00 00 01 33

User · Answer

If you want to retrieve the length  and possibly all other metadata  from your media file with ffmpeg by using a python script you could try this    import subprocess import json  input file      lt  path to your input file here  gt    metadata   subprocess check output f ffprobe -i  input file  -v quiet -print format json -show format -hide banner  split        metadata   json loads metadata  print f Length of file is   float metadata  format    duration       print metadata    Output   Length of file is  7579 977143       streams                  index   0         codec name    mp3          codec long name    MP3  MPEG audio layer 3           codec type    audio          codec time base    1 44100          codec tag string     0  0  0  0           codec tag    0x0000          sample fmt    fltp          sample rate    44100          channels   2         channel layout    stereo          bits per sample   0         r frame rate    0 0          avg frame rate    0 0          time base    1 14112000          start pts   353600         start time    0 025057          duration ts   106968637440         duration    7579 977143          bit rate    320000

User · Answer

From my experience many tools offer the desired data in some kind of a table ordered structure and also offer parameters to gather specific parts of that data  This applies to e g  smartctl  nvidia-smi and ffmpeg ffprobe  too  Simply speaking - often there s no need to pipe data around or to open subshells for such a task  As a consequence I d use the right tool for the job - in that case ffprobe would return the raw duration value in seconds  afterwards one could create the desired time format on his own    ffmpeg --version ffmpeg version 2 2 3      The command may vary dependent on the version you are using     usr bin env bash input file  quot  path to media file quot     Get raw duration value ffprobe -v quiet -print format compact print section 0 nokey 1 escape csv -show entries format duration  quot  input file quot   An explanation    quot -v quiet quot   Don t output anything else but the desired raw data value  quot -print format quot   Use a certain format to print out the data  quot compact  quot   Use a compact output format  quot print section 0 quot   Do not print the section name  quot  nokey 1 quot   do not print the key of the key value pair  quot  escape csv quot   escape the value  quot -show entries format duration quot   Get entries of a field named duration inside a section named format  Reference  ffprobe man pages

User · Answer

ffmpeg -i abc mp4 2 gt  amp 1   grep Duration   cut -d     -f 4   sed s       gives output  HH MM SS milisecs

User · Answer

You could try this        Determine video duration with ffmpeg   ffmpeg should be installed on your server     function mbmGetFLVDuration  file         time   00 00 00 000 format    time    exec  ffmpeg -i    file   2 gt  amp 1   grep  Duration    cut -d     -f 4   sed s            duration   explode      time      duration in seconds    duration 0  3600    duration 1  60  round  duration 2       return  duration in seconds       duration   mbmGetFLVDuration   home username webdir video file mov    echo  duration

[linux] How to extract duration time from ffmpeg output?

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