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Sur d’autres sites (8793)

  • Recursively Convert FLAC to MP3 Keeping All Metadata and Located in Same Directory

    6 juin 2020, par charlesstricklin

    I've got ffpeg installed on my Windows 10 PC and I'd like to recursively convert .flac music into .mp3 within the same directory (by that I mean the .flac file and the .mpg file end up in the same folder) and I'll be the first to admit I'm just a beginner to both ffmpeg and the CLI, so I'm a newbie there.

    



    I've been looking at Recursively Converting FLAC to MP3 Using FFmpeg While Maintaining Metadata and Directory Structure on Windows as a possible answer to my question, but I do not want to copy from one volume to another.

    



    Just to avoid confusion, my highest directory is C :\Users\User\Downloads\Music\ and I'd like to convert several artist/band's tracks from .flac to .mp3 within the same directory. C :\Users\User\Downloads\Music\1st Artist\1st CD\1st Track.flac would be converted to C :\Users\User\Downloads\Music\1st Artist\1st CD\1st Track.mp3, C :\Users\User\Downloads\Music\2nd Artist\1st CD\1st Track.flac would be converted to C :\Users\User\Downloads\Music\2nd Artist\1st CD\1st Track.mp3 and so on.

    



    Would someone clue me in on the best way you know of to accomplish that from the CLI, please ?

    


  • How to parse raw file extracted from system/bin/fb0 to .png file in android

    9 octobre 2015, par user2750644

    I know this is question was already asked on stack overflow, but none were helped. Basically i wanted to extract screenshot of another app programatically, for which i managed to get raw formatted image from dev/graphics/fb0 from my rooted device. When i opened this image, it looked as shown below.

    I would be thankful if someone could provide, solution which would convert this raw image into .PNG format.

    enter image description here

    Above image is screen shot of this.

    enter image description here

  • Converting .3gp file into mp4 file in android using ffmpeg

    8 août 2013, par user2171513

    I want to convert .3gp file into .mp4 file with resolution modified in Android using ffmpeg.
    I want to increase the resolution of the video from its standard resolution to 1920x1080.

    So far I have been successful in
    1) extracting .h264 video file from .3gp file and increase its resolution
    2) extracting .aac audio file from .3gp file.

    Now I want to combine them back into .mp4 file. The commands that I have used to extract this .h264 and .aac files are :

    ./ffmpeg -i 1.3gp -vbsf h264_mp4toannexb -s 1920x1080 1.h264
    
./ffmpeg -i 1.3gp -ab 160k -ac 2 -ar 48000 -vn -strict -2  1.aac

    The command that I have tried to merge them back is

    ./ffmpeg -i 1.h264 -i 1.aac -map 0:0 -map 1:0 -strict -2 1.mp4

    The 1.mp4 that gets generated at the end basically has audio only at few sync frames of video. (Thats what I feel , because the audio is present at specific intervals within the video)

    Can anyone please help in figuring out what am I missing here.

    EDIT :
    So basically I want to concat 4 different videos of 4 different resolution and type.

    1)

    ./ffmpeg -i 1.mp4 
    
Video: h264 (High), yuv420p, 1920x1080, 16959 kb/s, 29.85 fps, 90k tbr, 90k tbn, 180k tbc
    
Audio: aac, 48000 Hz, stereo, s16, 106 kb/s

    2)

    ffmpeg -i 2.mp4
    
Video: h264 (Constrained Baseline), yuv420p, 640x480, 3102 kb/s, 29.99 fps, 90k tbr, 90k tbn, 180k tbc
    
Audio: aac, 48000 Hz, stereo, s16, 93 kb/s

    3)

    ffmpeg -i 3.3gp
    
Video: h263, yuv420p, 1408x1152 [PAR 12:11 DAR 4:3], 2920 kb/s, 15 fps, 15 tbr, 15360 tbn, 29.97 tbc
    
Audio: amrnb, 8000 Hz, 1 channels, flt, 12 kb/s

    4)

    ffmpeg -i 4.3gp
    
Video: h264 (High), yuv420p, 352x288 [PAR 12:11 DAR 4:3], 216 kb/s, 24 fps, 24 tbr, 24 tbn, 48 tbc
    
Audio: aac, 44100 Hz, stereo, s16, 92 kb/s

    So I am converting them to mpegts using following commands

    ./ffmpeg -i 1.mp4 -c:v libx264 -vf scale=1920:1080 -r 60 -c:a aac -ar 48000 -b:a 160k -strict experimental -f mpegts 1.ts
    
./ffmpeg -i 2.mp4 -c:v libx264 -vf scale=1920:1080 -r 60 -c:a aac -ar 48000 -b:a 160k -strict experimental -f mpegts 2.ts
    
./ffmpeg -i 3.3gp -c:v libx264 -vf scale=1920:1080 -r 60 -c:a aac -ar 48000 -b:a 160k -strict experimental -f mpegts 3.ts
    
./ffmpeg -i 4.3gp -c:v libx264 -vf scale=1920:1080 -r 60 -c:a aac -ar 48000 -b:a 160k -strict experimental -f mpegts 4.ts

    then concatenating the .ts files into f.ts and then creating a final .mp4 file from it using

     cat 1.ts 2.ts 3.ts 4.ts > f.ts
    
./ffmpeg -i f.ts -c copy -bsf:a aac_adtstoasc output.mp4

    But my f.ts also doesnt seem to play correctly in VLC on linux, it plays first 2 mp4's video + audio and it plays last .3gp's audio only.(Same for output.mp4 too) Could you please help me in figuring out what am I missing ?

    Thanks

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