Ffmpeg все файлы в папке windows

В cmd, перейдите в каталог с файлами и выдайте эту команду и будет вам счастье:
for %a in (*.webm) do ffmpeg -i «%a» -vn -ab 320k -ar 44100 «%~dpna.mp3»

04 февр. 2023, в 15:56

2500 руб./за проект

04 февр. 2023, в 15:46

200 руб./за проект

04 февр. 2023, в 15:45

200000 руб./за проект

asked May 22, 2017 at 9:26

Put it into a flexible wrapper script

There’s a few benefits to doing it this way, for example, the provided script;

1. Uses find and array variables to handle complex and crazy filenames, and the process management
2. Records the process ID’s as it spawns ffmpeg and then periodically checks them if they are active
3. If a file already exists in it’s desired output form (i.e. file_mpeg1.mpeg), that file is skipped; this prevents saying running a loop of 100 files, failing for some reason after 90 files, and then re-running the whole thing from the start. (there is however no check at this stage to see if the existing file was complete or not. This goes a bit deeper into error checking / maybe a length compare based on original / an ffprobe, etc… )
4. The flexible template allows you easily manipulate the flow.

I tested it to process 4 random files downloaded off youtube:

As you can see it handles silly filenames quite well.

Here is the wrapper script based on your commands:

The syntax is: ./scriptname.sh [ext] [maxprocesses]

• So, to look to look for *.mov files and run 5 processes:
  • If the script name was script.sh, then you’d run
    • ./script.sh mov 5

Wrapper Script:

#!/usr/bin/env bash

ffprocess () {
    file="$1"
    output="$2" 
    TIMECODE=$(ffprobe "$file" -v error -show_entries stream_tags=timecode -of default=noprint_wrappers=1:nokey=1 | awk -F: '{ print $1 "\:" $2 "\:" $3 "\:" $4 }')
    ffmpeg -i "$file" 
    -vf "trim=start_frame=192,setpts=PTS-STARTPTS,scale=1280:-1:force_original_aspect_ratio=decrease,drawtext=fontfile=/usr/share/fonts/truetype/droid/DroidSansMono.ttf: fontsize=28: timecode='00:00:00:00': r=24: x=(w-tw)/2: y=25: fontcolor=white: box=1: boxcolor=0x00000099" 
    -threads 4 
    -c:v mpeg1video 
    -b:v 5000k 
    -af "atrim=start=8,asetpts=PTS-STARTPTS" 
    -c:a libmp3lame -b:a 192k 
    "${output}"
}

#This function gets called when a process is no longer valid and needs removing from the array

removeps () {
    trtmp=()
    for tmpps in "${ffpsid[@]}"
    do
        [[ $tmpps != "$1" ]] && trtmp+=($tmpps)
    done
    ffpsid=("${trtmp[@]}")
    unset trtmp
    return
}

#Checks to see if each process is still active
checkffpsid () {
    for ffps in "${ffpsid[@]}" 
    do 
    ps -p $ffps > /dev/null || removeps "$ffps"
done

}


if [[ "$#" -lt 2 ]]; then echo -e "Usage: $0 [ext] [maxproc]ni.e. $0 .mov 5" ; exit ; fi

ext="$1"
maxproc="$2"
find . -maxdepth 1 -iname "*.$ext" > inputlist.txt   # Find files with ext specified
IFS=$'n' read -rd '' -a filelist <<<"$(cat inputlist.txt)" 
for file in "${filelist[@]}"
    do
    name=$(basename "$file")
    name="${name%.*}"                                  # remove ext for name var
    outname="${name}_mpeg1.mpeg"                       # Set output name
    checkffpsid 
    if [ -f "$outname" ]
        then 
        echo "$outname" already exists, skipping ...
    else
        until [[ "${#ffpsid[@]}" -le "$maxproc" ]]
        do
            checkffpsid
            sleep 5
        done
        ffprocess "$file" "$outname" & ffpsid+=("$!") 
    fi
done

Just a couple notes

1. Your «$TIMECODE» variable never gets used … This is as per your original script.
2. You’re better off letting ffmpeg manage its own threads by passing -threads 0 instead of 4

answered May 23, 2017 at 1:41

asked May 22, 2017 at 9:26

Put it into a flexible wrapper script

There’s a few benefits to doing it this way, for example, the provided script;

1. Uses find and array variables to handle complex and crazy filenames, and the process management
2. Records the process ID’s as it spawns ffmpeg and then periodically checks them if they are active
3. If a file already exists in it’s desired output form (i.e. file_mpeg1.mpeg), that file is skipped; this prevents saying running a loop of 100 files, failing for some reason after 90 files, and then re-running the whole thing from the start. (there is however no check at this stage to see if the existing file was complete or not. This goes a bit deeper into error checking / maybe a length compare based on original / an ffprobe, etc… )
4. The flexible template allows you easily manipulate the flow.

I tested it to process 4 random files downloaded off youtube:

As you can see it handles silly filenames quite well.

Here is the wrapper script based on your commands:

The syntax is: ./scriptname.sh [ext] [maxprocesses]

• So, to look to look for *.mov files and run 5 processes:
  • If the script name was script.sh, then you’d run
    • ./script.sh mov 5

Wrapper Script:

#!/usr/bin/env bash

ffprocess () {
    file="$1"
    output="$2" 
    TIMECODE=$(ffprobe "$file" -v error -show_entries stream_tags=timecode -of default=noprint_wrappers=1:nokey=1 | awk -F: '{ print $1 "\:" $2 "\:" $3 "\:" $4 }')
    ffmpeg -i "$file" 
    -vf "trim=start_frame=192,setpts=PTS-STARTPTS,scale=1280:-1:force_original_aspect_ratio=decrease,drawtext=fontfile=/usr/share/fonts/truetype/droid/DroidSansMono.ttf: fontsize=28: timecode='00:00:00:00': r=24: x=(w-tw)/2: y=25: fontcolor=white: box=1: boxcolor=0x00000099" 
    -threads 4 
    -c:v mpeg1video 
    -b:v 5000k 
    -af "atrim=start=8,asetpts=PTS-STARTPTS" 
    -c:a libmp3lame -b:a 192k 
    "${output}"
}

#This function gets called when a process is no longer valid and needs removing from the array

removeps () {
    trtmp=()
    for tmpps in "${ffpsid[@]}"
    do
        [[ $tmpps != "$1" ]] && trtmp+=($tmpps)
    done
    ffpsid=("${trtmp[@]}")
    unset trtmp
    return
}

#Checks to see if each process is still active
checkffpsid () {
    for ffps in "${ffpsid[@]}" 
    do 
    ps -p $ffps > /dev/null || removeps "$ffps"
done

}


if [[ "$#" -lt 2 ]]; then echo -e "Usage: $0 [ext] [maxproc]ni.e. $0 .mov 5" ; exit ; fi

ext="$1"
maxproc="$2"
find . -maxdepth 1 -iname "*.$ext" > inputlist.txt   # Find files with ext specified
IFS=$'n' read -rd '' -a filelist <<<"$(cat inputlist.txt)" 
for file in "${filelist[@]}"
    do
    name=$(basename "$file")
    name="${name%.*}"                                  # remove ext for name var
    outname="${name}_mpeg1.mpeg"                       # Set output name
    checkffpsid 
    if [ -f "$outname" ]
        then 
        echo "$outname" already exists, skipping ...
    else
        until [[ "${#ffpsid[@]}" -le "$maxproc" ]]
        do
            checkffpsid
            sleep 5
        done
        ffprocess "$file" "$outname" & ffpsid+=("$!") 
    fi
done

Just a couple notes

1. Your «$TIMECODE» variable never gets used … This is as per your original script.
2. You’re better off letting ffmpeg manage its own threads by passing -threads 0 instead of 4

answered May 23, 2017 at 1:41