Writing a find command with ffmpeg to process videos












1















I want to write a command or script to find all my .mkv videos larger than 3Gb, then run ffmpeg to make them smaller (720p) and change the extension to mp4. I have it working except the file ends up with .mkv.mp4 extension.



I'm also sure there is probably a much better way of doing this, such as with a script. Here is what I have come up with: 



find '/home/username/Videos/' -type f -size +3G -exec ffmpeg -i "{}" -c:v libx264 -c:a copy -acodec copy -vf scale="trunc(oh*a/2)*2:720" -preset superfast -crf 24 -b:v 400k "{}.mp4" ;


I would also like to have the output files to a directory like /home/username/Videos/Changed, and then delete the original .mkv.



Can anyone help teach me the best method to do this?






command-line scripts video ffmpeg find







share|improve this question



























    1















    I want to write a command or script to find all my .mkv videos larger than 3Gb, then run ffmpeg to make them smaller (720p) and change the extension to mp4. I have it working except the file ends up with .mkv.mp4 extension.



    I'm also sure there is probably a much better way of doing this, such as with a script. Here is what I have come up with: 



    find '/home/username/Videos/' -type f -size +3G -exec ffmpeg -i "{}" -c:v libx264 -c:a copy -acodec copy -vf scale="trunc(oh*a/2)*2:720" -preset superfast -crf 24 -b:v 400k "{}.mp4" ;


    I would also like to have the output files to a directory like /home/username/Videos/Changed, and then delete the original .mkv.



    Can anyone help teach me the best method to do this?






    command-line scripts video ffmpeg find







    share|improve this question

























      1












      1








      1








      I want to write a command or script to find all my .mkv videos larger than 3Gb, then run ffmpeg to make them smaller (720p) and change the extension to mp4. I have it working except the file ends up with .mkv.mp4 extension.



      I'm also sure there is probably a much better way of doing this, such as with a script. Here is what I have come up with: 



      find '/home/username/Videos/' -type f -size +3G -exec ffmpeg -i "{}" -c:v libx264 -c:a copy -acodec copy -vf scale="trunc(oh*a/2)*2:720" -preset superfast -crf 24 -b:v 400k "{}.mp4" ;


      I would also like to have the output files to a directory like /home/username/Videos/Changed, and then delete the original .mkv.



      Can anyone help teach me the best method to do this?






      command-line scripts video ffmpeg find







      share|improve this question














      I want to write a command or script to find all my .mkv videos larger than 3Gb, then run ffmpeg to make them smaller (720p) and change the extension to mp4. I have it working except the file ends up with .mkv.mp4 extension.



      I'm also sure there is probably a much better way of doing this, such as with a script. Here is what I have come up with: 



      find '/home/username/Videos/' -type f -size +3G -exec ffmpeg -i "{}" -c:v libx264 -c:a copy -acodec copy -vf scale="trunc(oh*a/2)*2:720" -preset superfast -crf 24 -b:v 400k "{}.mp4" ;


      I would also like to have the output files to a directory like /home/username/Videos/Changed, and then delete the original .mkv.



      Can anyone help teach me the best method to do this?






      command-line scripts video ffmpeg find




      command-line scripts video ffmpeg find






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Jan 21 at 23:18









      ticotexasticotexas

      386




      386






















          1 Answer
          1






          active

          oldest

          votes


















          0














          IMHO, the "Good" way to do this is to break it into two steps:




          1. Find the big files.

          2. "Fix" them.


          And, I'd put step 2 into a bash script, stored in /home/username/bin/fixvideos



          My find command would then look like: 



          find '/home/username/Videos/' -type f -name '*.mkv' -size +3G -print0 |
          
    xargs -0 --no-run-if-empty /home/username/fixvideos


          and, the script in /home/username/fixvideos is something like: 



          #!/bin/bash
          
# handle "-v" or "--verbose" as optional 1st parameter, the rest are "*.mkv" files
          
# which will be rescaled and converted to ".mp4", using ffmpeg
          
declare -i verbose=0
          
#
          
if [[ "$1" = "-v" ]] || [[ "$1" = "--verbose" ]] ; then
          
    verbose=1
          
    shift
          
fi
          

          
while  [[ $# -ne 0 ]]  ; do
          
    # the base name, without the extension
          
    bname="${1//.mkv}"
          
    oname="$bname.mkv"
          
    if [[ $verbose -ne 0 ]] ; then
          
       echo "Reading $1, writing $oname" >&2
          
    fi
          
    ffmpeg -i "$1" -c:v libx264 -c:a copy -acodec copy 
          
       -vf scale="trunc(oh*a/2)*2:720" -preset superfast 
          
       -crf 24 -b:v 400k "$oname"
          
    #
          
    # shift all the filenames down so the next file is actually next
          
    shift
          
done
          
exit 0





          share|improve this answer


























          • Thanks @waltinator! It's great. It will take me some time to learn exactly how it works. I changed this line oname="$bname.mkv" to oname="$bname.mp4" and it worked. How can I have it save the new .mp4s to a different folder, like /home/username/Videos/Changed?

            – ticotexas
            Jan 22 at 19:43













          Your Answer








          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "89"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          autoActivateHeartbeat: false,
          convertImagesToLinks: true,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: 10,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














          draft saved

          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f1111796%2fwriting-a-find-command-with-ffmpeg-to-process-videos%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown

























          1 Answer
          1






          active

          oldest

          votes








          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          0














          IMHO, the "Good" way to do this is to break it into two steps:




          1. Find the big files.

          2. "Fix" them.


          And, I'd put step 2 into a bash script, stored in /home/username/bin/fixvideos



          My find command would then look like: 



          find '/home/username/Videos/' -type f -name '*.mkv' -size +3G -print0 |
          
    xargs -0 --no-run-if-empty /home/username/fixvideos


          and, the script in /home/username/fixvideos is something like: 



          #!/bin/bash
          
# handle "-v" or "--verbose" as optional 1st parameter, the rest are "*.mkv" files
          
# which will be rescaled and converted to ".mp4", using ffmpeg
          
declare -i verbose=0
          
#
          
if [[ "$1" = "-v" ]] || [[ "$1" = "--verbose" ]] ; then
          
    verbose=1
          
    shift
          
fi
          

          
while  [[ $# -ne 0 ]]  ; do
          
    # the base name, without the extension
          
    bname="${1//.mkv}"
          
    oname="$bname.mkv"
          
    if [[ $verbose -ne 0 ]] ; then
          
       echo "Reading $1, writing $oname" >&2
          
    fi
          
    ffmpeg -i "$1" -c:v libx264 -c:a copy -acodec copy 
          
       -vf scale="trunc(oh*a/2)*2:720" -preset superfast 
          
       -crf 24 -b:v 400k "$oname"
          
    #
          
    # shift all the filenames down so the next file is actually next
          
    shift
          
done
          
exit 0





          share|improve this answer


























          • Thanks @waltinator! It's great. It will take me some time to learn exactly how it works. I changed this line oname="$bname.mkv" to oname="$bname.mp4" and it worked. How can I have it save the new .mp4s to a different folder, like /home/username/Videos/Changed?

            – ticotexas
            Jan 22 at 19:43


















          0














          IMHO, the "Good" way to do this is to break it into two steps:




          1. Find the big files.

          2. "Fix" them.


          And, I'd put step 2 into a bash script, stored in /home/username/bin/fixvideos



          My find command would then look like: 



          find '/home/username/Videos/' -type f -name '*.mkv' -size +3G -print0 |
          
    xargs -0 --no-run-if-empty /home/username/fixvideos


          and, the script in /home/username/fixvideos is something like: 



          #!/bin/bash
          
# handle "-v" or "--verbose" as optional 1st parameter, the rest are "*.mkv" files
          
# which will be rescaled and converted to ".mp4", using ffmpeg
          
declare -i verbose=0
          
#
          
if [[ "$1" = "-v" ]] || [[ "$1" = "--verbose" ]] ; then
          
    verbose=1
          
    shift
          
fi
          

          
while  [[ $# -ne 0 ]]  ; do
          
    # the base name, without the extension
          
    bname="${1//.mkv}"
          
    oname="$bname.mkv"
          
    if [[ $verbose -ne 0 ]] ; then
          
       echo "Reading $1, writing $oname" >&2
          
    fi
          
    ffmpeg -i "$1" -c:v libx264 -c:a copy -acodec copy 
          
       -vf scale="trunc(oh*a/2)*2:720" -preset superfast 
          
       -crf 24 -b:v 400k "$oname"
          
    #
          
    # shift all the filenames down so the next file is actually next
          
    shift
          
done
          
exit 0





          share|improve this answer


























          • Thanks @waltinator! It's great. It will take me some time to learn exactly how it works. I changed this line oname="$bname.mkv" to oname="$bname.mp4" and it worked. How can I have it save the new .mp4s to a different folder, like /home/username/Videos/Changed?

            – ticotexas
            Jan 22 at 19:43
















          0












          0








          0







          IMHO, the "Good" way to do this is to break it into two steps:




          1. Find the big files.

          2. "Fix" them.


          And, I'd put step 2 into a bash script, stored in /home/username/bin/fixvideos



          My find command would then look like: 



          find '/home/username/Videos/' -type f -name '*.mkv' -size +3G -print0 |
          
    xargs -0 --no-run-if-empty /home/username/fixvideos


          and, the script in /home/username/fixvideos is something like: 



          #!/bin/bash
          
# handle "-v" or "--verbose" as optional 1st parameter, the rest are "*.mkv" files
          
# which will be rescaled and converted to ".mp4", using ffmpeg
          
declare -i verbose=0
          
#
          
if [[ "$1" = "-v" ]] || [[ "$1" = "--verbose" ]] ; then
          
    verbose=1
          
    shift
          
fi
          

          
while  [[ $# -ne 0 ]]  ; do
          
    # the base name, without the extension
          
    bname="${1//.mkv}"
          
    oname="$bname.mkv"
          
    if [[ $verbose -ne 0 ]] ; then
          
       echo "Reading $1, writing $oname" >&2
          
    fi
          
    ffmpeg -i "$1" -c:v libx264 -c:a copy -acodec copy 
          
       -vf scale="trunc(oh*a/2)*2:720" -preset superfast 
          
       -crf 24 -b:v 400k "$oname"
          
    #
          
    # shift all the filenames down so the next file is actually next
          
    shift
          
done
          
exit 0





          share|improve this answer















          IMHO, the "Good" way to do this is to break it into two steps:




          1. Find the big files.

          2. "Fix" them.


          And, I'd put step 2 into a bash script, stored in /home/username/bin/fixvideos



          My find command would then look like: 



          find '/home/username/Videos/' -type f -name '*.mkv' -size +3G -print0 |
          
    xargs -0 --no-run-if-empty /home/username/fixvideos


          and, the script in /home/username/fixvideos is something like: 



          #!/bin/bash
          
# handle "-v" or "--verbose" as optional 1st parameter, the rest are "*.mkv" files
          
# which will be rescaled and converted to ".mp4", using ffmpeg
          
declare -i verbose=0
          
#
          
if [[ "$1" = "-v" ]] || [[ "$1" = "--verbose" ]] ; then
          
    verbose=1
          
    shift
          
fi
          

          
while  [[ $# -ne 0 ]]  ; do
          
    # the base name, without the extension
          
    bname="${1//.mkv}"
          
    oname="$bname.mkv"
          
    if [[ $verbose -ne 0 ]] ; then
          
       echo "Reading $1, writing $oname" >&2
          
    fi
          
    ffmpeg -i "$1" -c:v libx264 -c:a copy -acodec copy 
          
       -vf scale="trunc(oh*a/2)*2:720" -preset superfast 
          
       -crf 24 -b:v 400k "$oname"
          
    #
          
    # shift all the filenames down so the next file is actually next
          
    shift
          
done
          
exit 0






          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited Jan 22 at 6:04

























          answered Jan 22 at 5:58









          waltinatorwaltinator

          22.6k74169




          22.6k74169













          • Thanks @waltinator! It's great. It will take me some time to learn exactly how it works. I changed this line oname="$bname.mkv" to oname="$bname.mp4" and it worked. How can I have it save the new .mp4s to a different folder, like /home/username/Videos/Changed?

            – ticotexas
            Jan 22 at 19:43





















          • Thanks @waltinator! It's great. It will take me some time to learn exactly how it works. I changed this line oname="$bname.mkv" to oname="$bname.mp4" and it worked. How can I have it save the new .mp4s to a different folder, like /home/username/Videos/Changed?

            – ticotexas
            Jan 22 at 19:43



















          Thanks @waltinator! It's great. It will take me some time to learn exactly how it works. I changed this line oname="$bname.mkv" to oname="$bname.mp4" and it worked. How can I have it save the new .mp4s to a different folder, like /home/username/Videos/Changed?

          – ticotexas
          Jan 22 at 19:43







          Thanks @waltinator! It's great. It will take me some time to learn exactly how it works. I changed this line oname="$bname.mkv" to oname="$bname.mp4" and it worked. How can I have it save the new .mp4s to a different folder, like /home/username/Videos/Changed?

          – ticotexas
          Jan 22 at 19:43




















          draft saved

          draft discarded




















































          Thanks for contributing an answer to Ask Ubuntu!


          • Please be sure to answer the question. Provide details and share your research!

          But avoid …



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          To learn more, see our tips on writing great answers.




          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f1111796%2fwriting-a-find-command-with-ffmpeg-to-process-videos%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          -

          Popular posts from this blog

          mysqli_query(): Empty query in /home/lucindabrummitt/public_html/blog/wp-includes/wp-db.php on line 1924

          Image
          0 I just uploaded a new plugin to my wordpress site and I got this warning: mysqli_query(): Empty query in /home/lucindabrummitt/public_html/blog/wp-includes/wp-db.php on line 1924 Usually if I have a problem, I can find answers on google but this one seems pretty particular and I'm not finding any info on it except for this forum. I'm not terribly techie but if someone can tell me how to read this and how to change it I can follow directions pretty well. Thanks All! PS If I don't have the proper tags here could someone add the appropriate tags? php mysql wordpress share | improve this question asked Nov 16 '18 at 20:41 ...
          Read more

          How to change which sound is reproduced for terminal bell?

          Image
          3 Recently upgrade to 18.10 from 18.04, and using the terminal is becoming annoying: the new alert sound is a drip ( /usr/share/sounds/gnome/default/alerts/drip.ogg ), and the previous one is still located at ( /usr/share/sounds/ubuntu/stereo/bell.ogg ). My issue is that at the gnome-terminal, when autocompleting or pressing left BOTH sounds are reproduced, at the same time. I want to just have ubuntu/stereo/bell.ogg active, not both . At the moment I have been only able to reduce the volume of the alerts (but still both are played), or turn the alerts down (but I dislike both "solutions"). gnome-terminal 18.10 teminal-bell share | improve this question ...
          Read more

          Can I use Tabulator js library in my java Spring + Thymeleaf project?

          Image
          0 I want to add Tabulator js to my java project. I added tabulator.min.js, tabulator.min.css to resources folder. After that added to my html page these dependencies as recommending in readme.md. <link rel="stylesheet" th:href="@{/css/tabulator.min.css}"> <script type="text/javascript" th:src="@{/js/tabulator.min.js}"></script> Now my tables view all elements, that I have in the html page, but not correct. In the documentation of Tabulator is example how to create header and table, var table = new Tabulator("#example-table", { columns:[ {title:"Name", field:"name", sorter:"string", width:200, editor:true}, {title:"Age", field:"age", sorter:"...
          Read more