AVIDEMUX question

[marcorocchini]

please can u help a cat?

however

consider, as example, this mkv file:

https://www.swisstransfer.com/d/35a45ca1-5123-460b-8d40-d295429aafe0

In Avidemux --> File -->Open --> c:\example.mkv

and then

from menu "File" --> "Project Script" --> "Save as Project" --> c:\example.py

This is the example.py opened with the notepad:

#PY  <- Needed to identify #
#--automatically built--

adm = Avidemux()
if not adm.loadVideo("C:/example.mkv"):
    raise("Cannot load C:/example.mkv")
adm.clearSegments()
adm.addSegment(0, 120000, 4720000)
adm.markerA = 0
adm.markerB = 4720000
adm.setHDRConfig(1, 1, 1, 1, 0)
adm.videoCodec("Copy")
adm.audioClearTracks()
adm.setSourceTrackLanguage(0,"und")
adm.setSourceTrackLanguage(1,"und")
if adm.audioTotalTracksCount() <= 0:
    raise("Cannot add audio track 0, total tracks: " + str(adm.audioTotalTracksCount()))
adm.audioAddTrack(0)
adm.audioCodec(0, "copy")
adm.audioSetDrc2(0, 0, 1, 0.001, 0.2, 1, 2, -12)
adm.audioSetEq(0, 0, 0, 0, 0, 880, 5000)
adm.audioSetChannelGains(0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
adm.audioSetChannelDelays(0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
adm.audioSetChannelRemap(0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8)
adm.audioSetShift(0, 0, 0)
if adm.audioTotalTracksCount() <= 1:
    raise("Cannot add audio track 1, total tracks: " + str(adm.audioTotalTracksCount()))
adm.audioAddTrack(1)
adm.audioCodec(1, "copy")
adm.audioSetDrc2(1, 0, 1, 0.001, 0.2, 1, 2, -12)
adm.audioSetEq(1, 0, 0, 0, 0, 880, 5000)
adm.audioSetChannelGains(1, 0, 0, 0, 0, 0, 0, 0, 0, 0)
adm.audioSetChannelDelays(1, 0, 0, 0, 0, 0, 0, 0, 0, 0)
adm.audioSetChannelRemap(1, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8)
adm.audioSetShift(1, 0, 0)
adm.setContainer("MKV", "forceAspectRatio=False", "displayWidth=1280", "displayAspectRatio=2", "addColourInfo=False", "colMatrixCoeff=2", "colRange=0", "colTransfer=2", "colPrimaries=2")

but now please consider only this line:

adm.markerB = 4720000

so this value (4720000) is the "duration" of entire clip from start to end in Avidemux.

I wonder: is there a way to get this value with a batch procedure, but without having - every time for a single file - manually open Avidemux and --> "Open file" -->"Save project" --> open in notepad and get the value?

I mean: is there a way, with a batch, to automatic get the value (in this case is 4720000)

so the final result is:

4720000

?

OR

eventually: is there a way to execute in commandline something like:

avidemux.exe --load c:\example.mkv

[and save the project in a .py file] ?

My target is simple to get:

4720000

and not other.

thanks

[jagabo]

Just use ffprobe. It will get the duration in seconds:

ffprobe.exe -v quiet -show_entries stream=duration -of default=noprint_wrappers=1:nokey=1 -select_streams v:0 %1 >duration.txt
set /p duration=<duration.txt

ffmpeg... b:v=DESIRED_STREAM_SIZE_IN_BYTES*8/%duration%...

Of course, you should already know how to do this as you've done similar things before.

[marcorocchini]

Just use ffprobe. It will get the duration in seconds:

ffprobe.exe -v quiet -show_entries stream=duration -of default=noprint_wrappers=1:nokey=1 -select_streams v:0 %1 >duration.txt
set /p duration=<duration.txt

ffmpeg... b:v=DESIRED_STREAM_SIZE_IN_BYTES*8/%duration%...

Of course, you should already know how to do this as you've done similar things before.

mmm thanks but if I do, on c:\example.mkv

rem
if exist c:\duration.txt del c:\duration.txt
rem
ffprobe.exe -show_entries stream=duration -of default=noprint_wrappers=1:nokey=1 -select_streams v:0 "c:\example.mkv">c:\duration.txt
rem

duration.txt is:

N/A

how can it be?
thanks

[jagabo]

It appears you video stream has no time codes. Try using "format=duration" instead of "stream=duration".

[marcorocchini]

if exist "%cd%\duration3.txt" del "%cd%\duration3.txt"
ffprobe64bit2022.exe -v error -select_streams v:0 -show_entries format=duration -print_format default=nokey=1:noprint_wrappers=1 "c:\Volumes\tmp_whatsapp.avs\tmp_whatsapp.avi">"%cd%\duration3.txt"
fart.exe -q "%cd%\duration3.txt" . --remove
set /p AviDemuxDur=<duration3.txt

ah wow
but please keep in mind the brain-cat-limited

so that using

fart.exe -q "%cd%\duration3.txt" . --remove

so for example i get

26560000

from

26.560000

is a vulgarity but however seems to works