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• Merging multiple mjr files into webm file based on timestamp of creation with FFMPEG

  2 novembre 2020, par Sankalpa Sarkar

  I am trying to combine multiple mjr files into a single webm file with blank gaps in the middle, based on certain timestamps. As an illustration, suppose I have three clips A (running from 3-3.10), B (running from 3.15-3.30) and C (3.35-3.50).

  


  To combine these, I would like to have a singular merged webm file with A running from 3 to 3.10, followed by a blank screen from 3.10-3.15, then B from 3.15 to 3.30, followed by a blank screen from 3.30 to 3.35 and then C from 3.35 to 3.50. Thus the entire video must be from 3 to 3:50 with the specifications.

  


  So far, I have to obtain the filename and date/time from the directory as and when they are created to determine the specific timestamps. For the same, I am using this code snippet :

  


  FANAME=\/bin/ls -1 *video.mjr | grep "$AGENTID" | sort -t- -k5 | head -1\
AGENTSTAT=`stat -c %y $FANAME`
ATIME=`date +%s -d"$AGENTSTAT"`


  


  Running a loop through all the files, how do I obtain this functionality ?

  


• FFMpeg joining audio files together, and the last file as the background [duplicate]

  11 octobre 2020, par Mezir

  I would like all audio files to be joined together and I always want the last audio file to be background.
I found an SSH command ready to do this but it only suits 3 audio files.
I wish it would work every time no matter how many audio files I put in.

  


  ffmpeg -i 1.mp3 -i 2.mp3 -i background.mp3 -filter_complex "[0:0][1:0]concat=n=2:v=0:a=1,volume=1dB,aformat=fltp,pan=stereo|c0=c0|c1=c1[a0];[2]volume=0.5dB,aformat=fltp,pan=stereo|c0=c0|c1=c1[a1];[a0][a1]amerge,aformat=fltp[a]" -map "[a]" -strict -2 -y final.mp3


  


  It would be best if it could be done using the php script and some library.

  


  I found a solution to my problem here, but I would also like to make the background audio play to the end and not get cut off.

  


  https://stackoverflow.com/a/57533505/10013762

  


• Batch Script + FFmpeg — Use FOR loop to pipe AND concat all files found except last file

  11 octobre 2020, par slyfox1186

  Im trying to convert all '.mp4' files in a folder into '.ts' files so I can use FFmpeg.exe to combine them all into one long '.mp4' video.

  


  I have to use the concat command to combine the .ts files when using ffmpeg.

  


  Below is a working line of code to do this the long way.... I want to use a for loop in case I have way more than just 3 files to combine.

  


  ffmpeg.exe -hide_banner -y -i concat:"a.ts|b.ts|c.ts" -c copy -bsf:a aac_adtstoasc "COMBINED.mp4"


  


  I can make this loop work by using the below for command but the last file found can not have a pipe after it | like c.ts" above didn't.

  


      FOR /F "USEBACKQ TOKENS=* DELIMS= ,|" %%I IN ('%%~dpnG.ts') DO (
    SET FNAME=%%~dpnI
    ECHO.
    ECHO !FNAME!
    PAUSE>NUL
    EXIT
)


  


  Does anyone know if it's even possible (maybe with tokens) to do this in a batch file ? If not any suggestions ? PowerShell ?

  


  In response to Compo's question here is my working script :

  


  @ECHO OFF
SETLOCAL
COLOR 0A
TITLE CONCAT MULTIPLE MP4 FILES

PUSHD "%~dp0"

SET FF="C:\MAB\local64\bin-video\ffmpeg.exe"

:: SET VIDEO NAME WITHOUT EXTENSION (.MP4)
SET IN01=a
SET IN02=b
SET IN03=c
SET COMBINED=FULL

:: CREATE TEMP .TS VIDEOS OF THE FILES YOU WANT TO COMBINE
%FF% -hide_banner -y -i "%IN01%.mp4" -c copy -bsf:v h264_mp4toannexb -f mpegts "%IN01%.ts"
%FF% -hide_banner -y -i "%IN02%.mp4" -c copy -bsf:v h264_mp4toannexb -f mpegts "%IN02%.ts"
%FF% -hide_banner -y -i "%IN03%.mp4" -c copy -bsf:v h264_mp4toannexb -f mpegts "%IN03%.ts"

:: COMBINE TEMP .TS FILES INTO COMBINED .MP4
%FF% -hide_banner -y -i concat:"%IN01%.ts|%IN02%.ts|%IN03%.ts" -c copy -bsf:a aac_adtstoasc "%COMBINED%.mp4"

ECHO.
PAUSE
EXIT