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• How to change mp4 aspect ratio to 16:9 using ffmpeg ?

  20 février 2023, par user1788736

  I got an mp4 video that I copy 4 minute of it using ffmpeg. After uploading to YouTube I noticed the uploaded video has black bars on both side of video(right and left side) !After searching for a way to remove those black bars I found that I need to use yt:stretch=16:9 !However,using yt:stretch=16.9 tag will not remove the black bars on iPhone and Samsung smart tv YouTube app !

  



  could an expert help me change the aspect ratio of original mp4 video to 16:9 using ffmpeg (without losing video quality) for re uploading to YouTube ? Thanks in advance ?

  



  I got two types of source with following information :

  



  1)Resolution:720x576 ,Frame rate:25 . Codec:H264 - MPEG-4 AVC(part 10)(avc1),
2)Resolution:848x480 , Frame rate:24.804393,Codec:H264 - MPEG-4 AVC(part 10)(avc1)


  



  ffmpeg code used to trim the original video :

  



     ffmpeg -i orginalVideo.mp4 -ss 00:25:55 -t 00:04:02 -acodec copy -vcodec copy videoForYoutube.mp4


  


• Getting this error using ffmpeg concat in ReactNative "concat imposible to open"

  2 février 2021, par Josip Bogdan

  Hy, I am trying to concat multyple video using ffmpeg concat, testing on samsung j76, android version 8.1.0

  


  const textFile = await (await writeTextFileWithAllVideoFiles(filePaths))  
const outputPath = Platform.OS === 'ios' ? `${RNFS.DocumentDirectoryPath}/video-1.mp4` : `${RNFS.DocumentDirectoryPath}/video-1.mp4`
console.log(`-f concat -safe 0 -i ${textFile} -c copy ${outputPath}`)
const result = await RNFFmpeg.execute(`-f concat -safe 0 -i ${textFile} -c copy ${outputPath}`)


  


  And here is how I create the txt file

  


  const writeTextFileWithAllVideoFiles = async (filePaths) => {
var RNFS = require('react-native-fs');
var path = RNFS.DocumentDirectoryPath + '/videoList.txt';

var fileContent = ''
console.log("fileplay1");
filePaths.forEach(path => {
   fileContent += 'file ' + '\'' + path.substring(8) + '\'' + '\r\n'
});
console.log(fileContent);
return RNFS.writeFile(path, fileContent, 'utf8')
.then((success) => {
   console.log(path)
   if (RNFS.exists(path))
      console.log('FILE WRITTEN!')
   return path
})
.catch((err) => {
    console.log(err.message)
    return err.message
});  
}


  


  This is my console log output

  


  file 'data/user/0/com.videoeditorapp/cache/Camera/f27579d2-1488-4a59-8a9d-7a4e7b6fe716.mp4'
file 'data/user/0/com.videoeditorapp/cache/Camera/58130175-bd20-4002-9629-070d0cdd18ac.mp4'

[Tue Feb 02 2021 16:30:45.375]  LOG      /data/user/0/com.videoeditorapp/files/videoList.txt
[Tue Feb 02 2021 16:30:45.376]  LOG      FILE WRITTEN!
[Tue Feb 02 2021 16:30:45.376]  LOG      -f concat -safe 0 -i /data/user/0/com.videoeditorapp/files/videoList.txt -c copy /data/user/0/com.videoeditorapp/files/video-1.mp4
[Tue Feb 02 2021 16:30:45.376]  LOG      [concat @ 0xe2b22000] Impossible to open '/data/user/0/com.videoeditorapp/files/data/user/0/com.videoeditorapp/cache/Camera/f27579d2-1488-4a59-8a9d-7a4e7b6fe716.mp4'
[Tue Feb 02 2021 16:30:45.377]  LOG      /data/user/0/com.videoeditorapp/files/videoList.txt: No such file or directory


  


  And the txt file is not on my android device
My manifest is like this

  


  &#xA;  &#xA;      &#xA;&#xA;<application></application>&#xA;

  


• Android ffmpeg Issue :- : No such file or directory

  22 décembre 2020, par Nirav Dangi

  I am using FFMPEG tool to merge IMAGE & AUDIO files. Its working only in SAMSUNG GALAXY TAB II.
I had tried in many android devices & emulators but unfortunately it had not worked in any of them.

  



  Same issue is posted here also. But Its solutions has not worked for me.

  



  Following is error log of emulator,

  



  02-15 08:46:33.667: D/NIRAV(921): Shell Line : /data/data/org.ffmpeg.android/lib/libffmpeg.so -y -loop 1 -r 1 -i /mnt/sdcard/ffmpeg/img.jpg -i /mnt/sdcard/ffmpeg/myrecord.mp4 -acodec aac -vcodec mpeg4 -s 480x320 -strict experimental -b:a 32k -shortest -f mp4 -r 2 /mnt/sdcard/ffmpeg/out.mp4 
02-15 08:46:33.707: D/NIRAV(921): Shell Line : ffmpeg version 0.11.1 Copyright (c) 2000-2012 the FFmpeg developers
02-15 08:46:33.717: D/NIRAV(921): Shell Line :   built on Nov 15 2013 00:50:10 with gcc 4.6 20120106 (prerelease)
02-15 08:46:33.717: D/NIRAV(921): Shell Line :   configuration: --arch=arm --cpu=cortex-a8 --target-os=linux --enable-runtime-cpudetect --enable-small --prefix=/data/data/info.guardianproject.ffmpeg/app_opt --enable-pic --disable-shared --enable-static --cross-prefix=/home/n8fr8/dev/android/ndk//toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/arm-linux-androideabi- --sysroot=/home/n8fr8/dev/android/ndk//platforms/android-3/arch-arm --extra-cflags='-I../x264 -mfloat-abi=softfp -mfpu=neon' --extra-ldflags=-L../x264 --enable-version3 --enable-gpl --disable-doc --enable-yasm --enable-decoders --enable-encoders --enable-muxers --enable-demuxers --enable-parsers --enable-protocols --enable-filters --enable-avresample --enable-libfreetype --disable-indevs --enable-indev=lavfi --disable-outdevs --enable-hwaccels --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver --disable-network --enable-libx264 --enable-zlib --enable-muxer=md5
02-15 08:46:33.717: D/NIRAV(921): Shell Line :   libavutil      51. 54.100 / 51. 54.100
02-15 08:46:33.717: D/NIRAV(921): Shell Line :   libavcodec     54. 23.100 / 54. 23.100
02-15 08:46:33.717: D/NIRAV(921): Shell Line :   libavformat    54.  6.100 / 54.  6.100
02-15 08:46:33.717: D/NIRAV(921): Shell Line :   libavdevice    54.  0.100 / 54.  0.100
02-15 08:46:33.727: D/NIRAV(921): Shell Line :   libavfilter     2. 77.100 /  2. 77.100
02-15 08:46:33.727: D/NIRAV(921): Shell Line :   libswscale      2.  1.100 /  2.  1.100
02-15 08:46:33.727: D/NIRAV(921): Shell Line :   libswresample   0. 15.100 /  0. 15.100
02-15 08:46:33.727: D/NIRAV(921): Shell Line :   libpostproc    52.  0.100 / 52.  0.100
02-15 08:46:33.747: D/NIRAV(921): Shell Line : /mnt/sdcard/ffmpeg/img.jpg: No such file or directory
02-15 08:46:33.747: D/NIRAV(921): Exit Value : 1


  



  I had verified the path of img.jpg & myrecord.mp4 files.
I am using android-ndk-r7 to build ffmpeg.