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• How to apply complex filters more than once with different parameters while avoiding "too many inputs" errors in ffmpeg ?

  15 mai 2019, par Hugh Walxet

  I’m trying to apply the displace complex filter more than once in a video, at specific intervals with no proportional relationship. In each instance, I want to apply the displace filter with slightly different parameters. If I list it twice in the commands for the complex_filter, I get an error saying I have too many inputs.

  I might as well ask, separately, how I could apply the same filter with the same parameters more than once in a video, without re-iterating the same filter more than once in the command line. Put differently, how do I run a filter as specific times without writing the command several times sequentially, each with a different trigger time ?

  C :\Users\Me>ffmpeg -i c :\users\Me\desktop\house2.mp4 -i c :\users\Me\desktop\house3.mp4 -i c:users\Me\desktop\house4.mp4 -filter_complex "shuffleframes=enable=’between(t,21,27)’:mapping=0 9 2 1 10 5 8 6 7 4 3, shuffleframes=enable=’between(t,3,7)’:mapping=0 4 9 1 10 5 8 6 2 7 4 3, shuffleframes=enable=’between(t,15,19)’:mapping=0 6 2 1 10 5 8 3 7 4 9, [0][1][2] displace=enable=’between(t,9,10)’:edge=wrap, [0][1][2] displace=enable=’between(t,20,21)’:edge=smear" c :\users\Me\desktop\houseglitch.mp4

• Unable to parse graph description substring in passing two word in android ffmpeg command

  16 janvier 2017, par Virani Ashish

  i have create video editing application and i have add text in video but i can add text in android ffmpeg command with space in two word like ’ashish virani’ then error occur.

  VideoEditingActivity: ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
  
                built with gcc 4.8 (GCC)
  
                configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
  
                libavutil      55. 17.103 / 55. 17.103
  
                libavcodec     57. 24.102 / 57. 24.102
  
                libavformat    57. 25.100 / 57. 25.100
  
                libavdevice    57.  0.101 / 57.  0.101
  
                libavfilter     6. 31.100 /  6. 31.100
  
                libswscale      4.  0.100 /  4.  0.100
  
                libswresample   2.  0.101 /  2.  0.101
  
                libpostproc    54.  0.100 / 54.  0.100
  
              Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/GifMaker/video/Txt_1484571055758.mp4':
  
                Metadata:
  
                  major_brand     : isom
  
                  minor_version   : 512
  
                  compatible_brands: isomiso2avc1mp41
  
                  encoder         : Lavf57.25.100
  
                Duration: 00:00:05.85, start: 0.021333, bitrate: 714 kb/s
  
                  Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 480x200 [SAR 1:1 DAR 12:5], 578 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
  
                  Metadata:
  
                    handler_name    : VideoHandler
  
                  Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 127 kb/s (default)
  
                  Metadata:
  
                    handler_name    : SoundHandler
  
              [AVFilterGraph @ 0xacf304f0] **Unable to parse graph description substring: "ccjcjcjc
  
              v**
  
              gv:x=210:y=20"
  
              Error opening filters!

• Filtering string for hidden character when read from file in bash [duplicate]

  19 mai 2021, par BharathYes

  I am writing a bash script to trim video file into small pieces and finally merge them into a single video file using ffmpeg based on specified time.

  


  #!/bin/bash

filename="$1"
linecount=`wc -l "${filename}.txt"`
echo -n "" > to-merge.list

# file split by time
count=0
IFS=''
while read -r fromTime ; read -r toTime; do
    echo "$fromTime and $toTime done"
    ffmpeg -i "${filename}.mp4" -ss $fromTime -to $toTime -c copy "${filename}_pt_${count}.mp4"
    echo "file '${filename}_pt_${count}.mp4'" >> to-merge.list
    count=$((count+1))
done < "${filename}.txt"

# file merge
`ffmpeg -f concat -safe 0 -i to-merge.list -c copy "${filename}-trimmed.mp4"`


  


  The input file contains time (odd lines are taken as start time and even as the end time). A file I use is :

  


  00:00:00
00:39:34
00:39:38
01:23:14
01:23:16
02:03:45
02:03:48
02:43:43


  


  ---

  


  problem faced

  


  The echo in while loop prints this : done02:03:45

  


  The overwriting makes me think the time stored in the variables must contain a special character at the end that makes it invalid in ffmpeg.
ffmpeg throws this error : Invalid duration specification for ss: 01:23:16

  


  Is there a way to cleanup the time variable ?

  


  I have tried to find what is causing this issue or how to get rid of it but drawing a blank.

  


  ---

  


  what I have tried so far

  


  use grep -Eo '[0-9]{1,2}:[0-9]{1,2}:[0-9]{1,2}' to find time. While this works on the shell I am unable to use it in the script.

  


  Tried splitting time by : into hour, min and sec and saving them into an array to then merge them back but this makes it unnecessarily complicated and error prone.

  


  PS :
Is while read to be preferred for reading multiple lines like here or should tools like sed be used for best practice ? Such as sed '2,4 !d' /tmp/test.txt ?