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Sur d’autres sites (11591)

  • How can i add cover image on mp3 file using ffmpeg ?

    30 juillet 2012, par user1562502

    I'm trying to convert audio file to mp3 and I want to add cover image into mp3 file.
    I tried this :

    ffmpeg.exe -i "input audio file" -i image.png out.mp3

    When conversion completes there is no cover image into mp3.
    I tried and this which is from the official documentation of ffmpeg. The result is the same mp3 file without cover image.

    ffmpeg -i input.mp3 -i cover.png -c copy -metadata:s:v title="Album cover"-metadata:s:v comment="Cover (Front)" out.mp3

    Thank you in advance !

  • Certain FFmpeg dll files don't seem to be installed or a are missing

    10 septembre 2023, par Señor Tonto

    I got the installation form the BtnB github repo linked in the official ffmpeg website, the shared version. On aunch my app calls for these .dll files which don't seem to be present in my installation. Though I can find .def files with their names for some reason, just not the .dll files. The names are : avcodec-60.dll, avutil-58.dll, avformat-60.dll & swscale-7.dll I wonder why these files aren't included in the folder I got. Maybe a faulty installation ? Here's where I got my FFmpeg installation : https://github.com/BtbN/FFmpeg-Builds/releases Also,
I've got no idea why the .dlls aren't installed. spmething must've gone wrong.

    


  • using pocketsphinx_continuous with a .wav file

    3 avril 2013, par user2242131

    I am attempting to write an application that will allow a user to speak a small set of commands from a remote system and have them executed on my server. Using pocketsphinx to parse the spoken text. When run locally with the microphone, pocketsphinx_continuous works perfectly no matter how I slur the words. But when importing the audio file and using ffmpeg to downsample the audio to a single channel, 16 bit PCM file, it will parse the first word without difficulty. Then it will skip everything else and treat it as . I am confident that the problem is in the file format and not in the pocketsphinx configuration.

    Using command line
    ffmpeg -y -i Sound\AddSheet.wav -ac 1 -f s16le -acodec pcm_s16le -ar 16k AddTmp.wav
    in a batch file.

    The bottom of the output I get is :

    INFO: fsg_search.c(1407): Start node ADD.0:5:47
    
INFO: fsg_search.c(1407): Start node <sil>.0:2:49
    
INFO: fsg_search.c(1446): End node <sil>.126:128:305 (-486)
    
INFO: fsg_search.c(1662): lattice start node <s>.0 end node <sil>.126
    
INFO: ps_lattice.c(1352): Normalizer P(O) = alpha(<sil>:126:305) = -175371
    
INFO: ps_lattice.c(1390): Joint P(O,S) = -176076 P(S|O) = -705
    
000000000: ADD USER
    
</sil></sil></s></sil></sil>

    Which is not the audio in the file. The words spoken in the file are "ADD SPREADSHEET", which works perfectly from the same microphone without the intervening .wav file.

    I have tried increasing the audio volume and decreasing the background noise using sox :

    sox -v 3.0 Sound\%1 Sound\%1-loud.wav ffmpeg -i Sound\%1-loud.wav -vn -ss 00:00:00 -t 00:00:01 -y Sound\%1-noiseaud.wav 
    
sox Sound\%1-noiseaud.wav -n noiseprof Sound\%1-noise.prof 
    
sox Sound\%1 Sound\%1-clean.wav noisered sound\noise.prof 0.21 
    
ffmpeg -y -i Sound\%1-clean.wav -ac 1 -f s16le -acodec pcm_s16le -ar 16k AddTmp.wav

    with no noticeable effect on the final results.

    If you look at the output you will notice that fsg_search.c has found ADD as the start node, then silence for the remainder. Please help on this.

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