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• ffmpeg showwaves in combination with picture slideshow

  14 avril 2023, par Sascha

  i use ffmpeg to create a audio Visualization with a static background picture.
This works like it should. I can change the resolution, the picture and the color of the waveform.

  


  ffmpeg -i Audio.mp3 -loop 1 -framerate 25 -i img001.jpg -filter_complex "[0:a]aformat=channel_layouts=mono,showwaves=s=1280x720:mode=cline:r=25:colors=black[v];[1:v]scale=1280x720[bg];[bg][v]overlay=format=auto:x=(W-w)/2:y=(H-h)/2,format=yuv420p[outv]" -map "[outv]" -map 0:a -c:v libx264 -c:a copy -shortest Output.mp4

  


  Now i would like to have the possibility to have more than one picturs.
For that i use the following code.

  


  ffmpeg -framerate 1/5 -i img%%03d.jpg -i Audio.mp3 -r 25 -c:v libx264 -pix_fmt yuv420p Output.mp4

  


  or that one for a fading effect.

  


  ffmpeg -i Audio.mp3 -i img%%03d.jpg -vf zoompan=d=(%Framerate%+1)/1:s=%Resolution%:fps=1,framerate=25:interp_start=0:interp_end=255:scene=100 -c:v mpeg4 -q:v 2 Output.mp4

  


  I calculate the framerate with "audiolenght/numbers of picture" in my code before.
That also works like it should.

  


  But in combination, it will not work, maybe because of the framerate 1/5 of the slideshow and the framerate of the waveform.

  


  Can someone help me ?

  


  best regards
Sascha

  


• Through 1 someone through ffmpeg I need to combine 2 audio and add a picture (album) to it

  21 avril 2021, par DarkShade

  Through 1 whom through ffmpeg
I need to combine 2 audio and add a picture (album) to it

  


  <--------->            1-audio
     <-------------->  2-audio
<------------------->  output


  


  https://superuser.com/questions/1509582/ffmpeg-merge-two-audio-file-with-defined-overlapping-time

  


  I looked at this link and it combined 2 audios.
Now I need to add a picture (album) to it

  


  ---

  


  Here is the command that is using me

  


  ffmpeg -i 1.mp3 -i 2.mp3 -filter_complex "[1]adelay=Ns|Ns[a1];[0:a][a1]amix=inputs=2[a]" -map "[a]" output.mp3


  


  Thanks to this, I was able to combine two audios into one.

  


  I saw it this way

  


  ffmpeg -i 1.mp3 -i 2.mp3 -i 1.png -filter_complex "[1]adelay=5s|5s[a1];[0:a][a1]amix=inputs=2[a]" -map "[a]" -c:a copy -c:v copy -map 0:0 -map 1:0 -id3v2_version 3 -metadata:s:v title="Album cover" -metadata:s:v comment="Cover (front)" audio-out.mp3


  


  1.mp3 - first audio (1:35 s)
2.mp3 - second audio (0:16 s)
1.png - picture (album) (170x170)


  


  I got this error

  


  Streamcopy requested for output stream 0:0, which is fed from a complex filtergraph. Filtering and streamcopy cannot be used together.

  


  ---

  


  What I need ?

  


  I need to add picture (album) to audio combined with this command

  


  When I say picture (album), I mean exactly that.
This is clearly shown in the picture.
https://i.imgur.com/z64KhoS.png

  


• How to encode a picture into H264 using x264 API ?

  23 novembre 2011, par cmm427

  I encode a picture following the link How to encode series of images into H264 using x264 API ? (C/C++), but every time x264_encoder_encode(encoder, &nals, &i_nals, &pic_in, &pic_out) returns 0.