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  • Strange problem with inotifywait, while do and ffmpeg

    27 juillet 2022, par cluelessdev

    Linux Mint 20.3 up to date.
I'd like to convert and rename with ffmpeg some files which appear in a folder.
When not using the ffmpeg line everything works fine (note ffmpeg is commented out here)
`

    


    #!/bin/bash
rm flist.txt
watchdir=/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/
startdate=54
starttime=32
while read -r fullpath 
do
    echo "fullpath '$fullpath'" >> flist.txt
        lenght=${#fullpath}
    echo 'lenght ' $lenght >> flist.txt 
    basedate=${fullpath:lenght-startdate:4}${fullpath:lenght-startdate+5:2}${fullpath:lenght-startdate+8:2}
    basetime=${fullpath:lenght-starttime:2}${fullpath:lenght-starttime+3:2}${fullpath:lenght-starttime+6:2} 
    echo basedate "'$basedate'" >> flist.txt
    echo basetime "'$basetime'" >> flist.txt
    newfilename="/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/test2/recordings-convert/"$basedate"-"$basetime"-doorcam".mkv
    # ffmpeg -y -i $fullpath -c:v copy -movflags +faststart $newfilename &> /dev/null
done < <(inotifywait -m -r "$watchdir" --format '%w%f' -e create -e moved_to | grep '\.dav$' --line-buffered)


    


    This does produce the desired result without ffmeg conversion :

    


    $cat flist.txt
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/00/00.01.33-00.01.55[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '000133'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/00/00.29.26-00.29.48[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '002926'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/00/00.33.09-00.33.32[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '003309'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/02/02.23.35-02.23.56[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '022335'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/02/02.27.19-02.27.40[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '022719'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/04/04.08.22-04.08.43[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '040822'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/06/06.50.14-06.50.40[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '065014'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/06/06.50.43-06.51.28[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '065043'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/06/06.56.56-06.58.02[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '065656'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/09/09.18.31-09.19.09[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '091831'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/09/09.47.54-09.55.00[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '094754'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/09/09.55.00-09.55.50[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '095500'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/10/10.20.23-10.20.44[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '102023'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/10/10.24.24-10.24.44[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '102424'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/11/11.00.39-11.01.34[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '110039'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/13/13.26.22-13.26.53[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '132622'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/16/16.00.09-16.01.04[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '160009'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/16/16.38.46-16.39.15[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '163846'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/16/16.56.05-16.56.30[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '165605'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/16/16.56.30-16.57.05[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '165630'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/19/19.24.56-19.25.33[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '192456'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/19/19.51.13-19.52.00[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '195113'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/19/19.52.37-19.53.10[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '195237'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/20/20.05.29-20.06.02[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '200529'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/20/20.26.44-20.27.38[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '202644'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/20/20.35.20-20.35.41[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '203520'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/20/20.38.57-20.39.17[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '203857'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/20/20.40.49-20.41.11[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '204049'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/20/20.44.27-20.44.47[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '204427'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/20/20.49.09-20.49.46[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '204909'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/20/20.51.09-20.51.58[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '205109'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/22/22.33.25-22.33.46[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '223325'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/22/22.38.48-22.39.10[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '223848'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/22/22.50.14-22.50.35[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '225014'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/23/23.04.43-23.05.03[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '230443'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/23/23.08.18-23.08.40[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '230818'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/23/23.19.51-23.20.11[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '231951'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/23/23.23.27-23.23.48[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '232327'


    


    `
If I remove the comment and do the ffmpeg thing it fails for some files because $fullpath is wrong :

    


    $cat flist.txt
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/00/00.01.33-00.01.55[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '000133'
fullpath 'media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/00/00.29.26-00.29.48[M][0@0][0].dav'
lenght  118
basedate '20220611'
basetime '002926'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/00/00.33.09-00.33.32[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '003309'
fullpath 'media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/02/02.23.35-02.23.56[M][0@0][0].dav'
lenght  118
basedate '20220611'
basetime '022335'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/02/02.27.19-02.27.40[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '022719'
fullpath 'media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/04/04.08.22-04.08.43[M][0@0][0].dav'
lenght  118
basedate '20220611'
basetime '040822'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/06/06.50.14-06.50.40[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '065014'
fullpath 'media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/06/06.50.43-06.51.28[M][0@0][0].dav'
lenght  118
basedate '20220611'
basetime '065043'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/06/06.56.56-06.58.02[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '065656'
fullpath 'edia/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/09/09.18.31-09.19.09[M][0@0][0].dav'
lenght  117
basedate '20220611'
basetime '091831'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/09/09.47.54-09.55.00[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '094754'
fullpath '1/dav/09/09.55.00-09.55.50[M][0@0][0].dav'
lenght  41
basedate '][0@][].'
basetime '095500'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/10/10.20.23-10.20.44[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '102023'
fullpath 'media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/10/10.24.24-10.24.44[M][0@0][0].dav'
lenght  118
basedate '20220611'
basetime '102424'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/11/11.00.39-11.01.34[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '110039'
fullpath 'edia/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/13/13.26.22-13.26.53[M][0@0][0].dav'
lenght  117
basedate '20220611'
basetime '132622'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/16/16.00.09-16.01.04[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '160009'
fullpath 'dia/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/16/16.38.46-16.39.15[M][0@0][0].dav'
lenght  116
basedate '20220611'
basetime '163846'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/16/16.56.05-16.56.30[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '165605'
fullpath 'media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/16/16.56.30-16.57.05[M][0@0][0].dav'
lenght  118
basedate '20220611'
basetime '165630'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/19/19.24.56-19.25.33[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '192456'
fullpath 'edia/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/19/19.51.13-19.52.00[M][0@0][0].dav'
lenght  117
basedate '20220611'
basetime '195113'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/19/19.52.37-19.53.10[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '195237'
fullpath 'edia/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/20/20.05.29-20.06.02[M][0@0][0].dav'
lenght  117
basedate '20220611'
basetime '200529'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/20/20.26.44-20.27.38[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '202644'
fullpath 'edia/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/20/20.35.20-20.35.41[M][0@0][0].dav'
lenght  117
basedate '20220611'
basetime '203520'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/20/20.38.57-20.39.17[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '203857'
fullpath 'media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/20/20.40.49-20.41.11[M][0@0][0].dav'
lenght  118
basedate '20220611'
basetime '204049'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/20/20.44.27-20.44.47[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '204427'
fullpath 'media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/20/20.49.09-20.49.46[M][0@0][0].dav'
lenght  118
basedate '20220611'
basetime '204909'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/20/20.51.09-20.51.58[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '205109'
fullpath 'edia/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/22/22.33.25-22.33.46[M][0@0][0].dav'
lenght  117
basedate '20220611'
basetime '223325'
fullpath '/media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/22/22.38.48-22.39.10[M][0@0][0].dav'
lenght  119
basedate '20220611'
basetime '223848'
fullpath 'media/mark/d1d75ed6-f3a5-433b-9090-d95191275f6c/download/camera/2022-06-11/001/dav/22/22.50.14-22.50.35[M][0@0][0].dav'
lenght  118
basedate '20220611'
basetime '225014'
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    So why does it fail when ffmpeg is not commented out ?

    


    Follow-up : found this post

    


    https://unix.stackexchange.com/questions/241535/problem-with-ffmpeg-in-bash-loop

    


    I think this relates to my problem but I don't know how to change my code accordingly.

    


    Edit2, I think I found the solution

    


    ffmpeg -y -i $fullpath -c:v copy -movflags +faststart $newfilename < /dev/null &> /dev/null;


    


  • Ffmpeg won't copy excerpt of video correctly

    5 mai 2022, par JR Jr.

    I am using a DOS batch to automate and copy excerpts of various high definition videos (mkv's with more than 1GB each).
The script is very convenient and runs fast and fine, but Ffmpeg is not doing its job correctly (it seems Murphy's law is inexorably enthralled into technology, things never come easy, which is why I love and hate it).

    


    Anyway, to cut a long story short, each time the batch job runs, a code like below is executed (pardon me the indiscrete folder name, it's about the 90's TV show, it's not porn !).

    


    call "C:\ffmpeg\bin\ffmpeg.exe" -y -i "D:\100\Sexo\S01\SATC - S01E03 - Bay of Married Pigs.mkv" -ss 00:18:05 -to 00:19:15 -codec copy "002-SATC - S01E03 - Bay of Married Pigs-00_18_05-00_19_15.mp4"


    


    The problem is that the first 6 seconds or so of the resulting video has no video, only audio with a frozen image that only starts to move after about 6 seconds, which is a huge defect, not to mention very annoying (a big let down, after all my meticulous scripting work :(). And this happens for most of the files, except a few ones.

    


    Even though this is copying and changing the format from mkv to mp4, per another thread on this site (https://askubuntu.com/questions/396883/how-to-simply-convert-video-files-i-e-mkv-to-mp4), this is not re-encoding, so this is not the issue. Actually, the same problem occurs even if I don't change the format from mkv to mp4.

    


    Even though I foresee a "there's no way to fix this", let me ask : is there a way to fix this ? Hopefully there is a way.

    


  • How to keep two languages when using FFMPEG ?

    14 août 2020, par timlwsk

    So, to only keep the english language track, I currently use ffmpeg -i INPUT.mkv -map 0:v -map 0:m:language:eng OUTPUT.mkv, how can I keep the english and german tracks ?

    


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