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• concat multiple image and multiple video using complex_filter concat and scale simultaneously ? [duplicate]

  7 mars 2018, par Ratna deep verma

  This question already has an answer here :

  • Parsed_concat_1 @ 02ad98e0 Failed to configure output pad on Parsed_concat_1 ffmpeg
    
    1 answer
    
  • how to use ffmpeg to apply 1:1 SAR before concat on large complex filter
    
    1 answer
    
  • Getting Exception while merging two file with ffmpeg
    
    1 answer
    

  I have two ffmpeg commands :

  ffmpeg -loop 1 -t 5 -i test4.jpg -i test4.jpg -preset ultrafast -vsync vfr -filter_complex "[0:v]fade=t=out:st=4:d=1,scale=w=1280:h=720:force_original_aspect_ratio=1,pad=1280:720:(ow-iw)/2:(oh-ih)/2[v0];[1:v]scale=w=1280:h=720:force_original_aspect_ratio=1,pad=1280:720:(ow-iw)/2:(oh-ih)/2[v1];[v0][v1]concat=n=2:v=1:a=0,format=yuv420p[v]" -map "[v]" rd.mp4

  and

  ffmpeg -i newvideo.mp4 -i videoplayback.mp4 -i newvideo.mp4 -preset ultrafast -vsync vfr -filter_complex "[0:v]scale=w=1280:h=720:force_original_aspect_ratio=1,pad=1280:720:(ow-iw)/2:(oh-ih)/2[v0]; [1:v]scale=w=1280:h=720:force_original_aspect_ratio=1,pad=1280:720:(ow-iw)/2:(oh-ih)/2[v1];[2:v]fade=t=in:st=0:d=1,fade=t=out:st=4:d=1,scale=w=1280:h=720:force_original_aspect_ratio=1,pad=1280:720:(ow-iw)/2:(oh-ih)/2[v2]; [v0][v1][v2]concat=n=3:v=1:a=0[v]" -map [v] rd.mp4

  How i can combine these two commands ?

  I want to concatenate multiple image with different resolutions and multiple Videos with different resolutions and bit rate.

  Above two commands work properly but i am not able to combine these two commands in single command.

  I tried this command

  ffmpeg -i newvideo.mp4 -i videoplayback.mp4 -loop 1 -t 5 -i test4.jpg -preset ultrafast -vsync vfr -filter_complex "[0:v]scale=w=1280:h=720:force_original_aspect_ratio=1,pad=1280:720:(ow-iw)/2:(oh-ih)/2[v0]; [1:v]scale=w=1280:h=720:force_original_aspect_ratio=1,pad=1280:720:(ow-iw)/2:(oh-ih)/2[v1];[2:v]fade=t=in:st=0:d=1,fade=t=out:st=4:d=1,scale=w=1280:h=720:force_original_aspect_ratio=1,pad=1280:720:(ow-iw)/2:(oh-ih)/2[v2]; [v0][v1][v2]concat=n=3:v=1:a=0[v]" -map [v] rd.mp4

  I just try to add an image end of video with 5 second’s duration. Although it can by any sequence of video and image

  I am getting this error :

  Input link in2:v0 parameters (size 1280x720, SAR 144000:144001) do not match the corresponding output link in0:v0 parameters (1280x720, SAR 1:1)
  
  [Parsed_concat_8 @ 0000000002a56520] Failed to configure output pad on Parsed_concat_8
  
  Error reinitializing filters!
  
  Failed to inject frame into filter network: Invalid argument
  
  Error while processing the decoded data for stream #2:0
  
  Conversion failed!

• ffmpeg android concat multiple image and multiple video using complex_filter concat and scale simultaneously ?

  7 mars 2018, par Ratna deep verma

  I have two ffmpef commands :

  ffmpeg -loop 1 -t 5 -i test4.jpg -i test4.jpg -preset ultrafast -vsync vfr -filter_complex "[0:v]fade=t=out:st=4:d=1,scale=w=1280:h=720:force_original_aspect_ratio=1,pad=1280:720:(ow-iw)/2:(oh-ih)/2[v0];[1:v]scale=w=1280:h=720:force_original_aspect_ratio=1,pad=1280:720:(ow-iw)/2:(oh-ih)/2[v1];[v0][v1]concat=n=2:v=1:a=0,format=yuv420p[v]" -map "[v]" rd.mp4

  and

  ffmpeg -i newvideo.mp4 -i videoplayback.mp4 -i newvideo.mp4 -preset ultrafast -vsync vfr -filter_complex "[0:v]scale=w=1280:h=720:force_original_aspect_ratio=1,pad=1280:720:(ow-iw)/2:(oh-ih)/2[v0]; [1:v]scale=w=1280:h=720:force_original_aspect_ratio=1,pad=1280:720:(ow-iw)/2:(oh-ih)/2[v1];[2:v]fade=t=in:st=0:d=1,fade=t=out:st=4:d=1,scale=w=1280:h=720:force_original_aspect_ratio=1,pad=1280:720:(ow-iw)/2:(oh-ih)/2[v2]; [v0][v1][v2]concat=n=3:v=1:a=0[v]" -map [v] rd.mp4

  How i can combine these two commands ?

  I want to concatenate multiple image with different resolutions and multiple Videos with different resolutions and bit rate.

  Above two commands work properly but i am not able to combine these two commands in single command.

  I tried this command

  ffmpeg -i newvideo.mp4 -i videoplayback.mp4 -loop 1 -t 5 -i test4.jpg -preset ultrafast -vsync vfr -filter_complex "[0:v]scale=w=1280:h=720:force_original_aspect_ratio=1,pad=1280:720:(ow-iw)/2:(oh-ih)/2[v0]; [1:v]scale=w=1280:h=720:force_original_aspect_ratio=1,pad=1280:720:(ow-iw)/2:(oh-ih)/2[v1];[2:v]fade=t=in:st=0:d=1,fade=t=out:st=4:d=1,scale=w=1280:h=720:force_original_aspect_ratio=1,pad=1280:720:(ow-iw)/2:(oh-ih)/2[v2]; [v0][v1][v2]concat=n=3:v=1:a=0[v]" -map [v] rd.mp4

  I just try to add an image end of video with 5 second’s duration. Although it can by any sequence of video and image

  I am getting this error :

  Input link in2:v0 parameters (size 1280x720
  , SAR 144000:144001) do not match the corresponding output link in0:v0 parameter
  s (1280x720, SAR 1:1)
  [Parsed_concat_8 @ 0000000002a56520] Failed to configure output pad on Parsed_co
  ncat_8
  Error reinitializing filters !
  Failed to inject frame into filter network : Invalid argument
  Error while processing the decoded data for stream #2:0
  Conversion failed !

• How to scale and mux audio ?

  20 décembre 2019, par siods333333

  First problem is with audio rescaling. I’m trying to redo doc/examples/transcode_aac.c so that it also resamples from 41100 to 48000, it contained a warning that it can’t do it.

  Using doc/examples/resampling_audio.c as a reference, I saw that before doing swr_convert, I need to find the number of audio samples at the output with the code like this :

      int dst_nb_samples = av_rescale_rnd( input_frame->nb_samples + swr_get_delay(resampler_context, 41100),
  
                                           48000, 41100, AV_ROUND_UP);

  Problem is, when I just set int dst_nb_samples = input_frame->nb_samples (which is 1024), it encodes and plays normally, but when I do that av_rescale_rnd thing (which results in 1196), audio is slowed down and distorted, like there are skips in the audio.

  Second problem is with trying to mux webm with opus audio.

  When I set AVStream->time_base to 1/48000, and increase AVFrame->pts by 960, the resulted file is played in the player as a file that is much bigger. 17 seconds audio shows as 16m11s audio, but it plays normally.

  When I increase pts by 20, it displays normally, but has a lot of [libopus @ 00ffa660] Queue input is backward in time messages during the encoding. Same for pts 30, still has those messages.

  Should I try time_scale 1/1000 ? webm always have timecodes in milliseconds, and opus have packet size of 20ms (960 samples at 48000 Hz).

  Search for pts += 20;

  Here is the whole file, all modification I did are marked with //MINE : http://www.mediafire.com/file/jlgo7x4hiz7bw64/transcode_aac.c

  Here is the file I tested it on http://www.mediafire.com/file/zdy0zarlqw3qn6s/480P_600K_71149981_soundonly.mkv