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• Video is cut after adding 2 watermarks with FFMPEG-KIT [closed]

  7 août 2023, par dfjick

  I made a FFMPEG-KIT command to add 2 PNG watermarks to the video and everything went smoothly.

  


  String ffmpegCommand = "-y -i " + videoPath +
            " -i " + watermarkImagePath +
            " -i " + userID +
            " -filter_complex " +
            "\"[0:v][1:v]overlay=x='if(lt(mod(t,10),5),10,W-w-10)':y='if(lt(mod(t,10),5),10,H-h-35)',\"" +
            "\"overlay=x='if(lt(mod(t,10),5),7,W-w-7)':y='if(lt(mod(t,10),5),165,H-h-15)'[out]\"" +
            " -map [out] -map 0:a -c:v libx264 -crf 18 -preset slow -c:a aac " + outputPath;


  


  But for videos that are longer than 20 seconds, the results don't match the original video, sometimes the videos are only <20 seconds and at random times.

  &#xA;

  I get this error, how do I fix it ?

  &#xA;

  W/ffmpeg-kit: [mov,mp4,m4a,3gp,3g2,mj2 @ 0xb400007c5c1243f0] Packet corrupt (stream = 1, dts = 366976)
W/ffmpeg-kit: [mov,mp4,m4a,3gp,3g2,mj2 @ 0xb400007c5c1243f0] .
E/ffmpeg-kit: [NULL @ 0xb400007c6c179400] Invalid NAL unit size (63547 > 20190).
E/ffmpeg-kit: [NULL @ 0xb400007c6c179400] missing picture in access unit with size 20194
W/ffmpeg-kit: /storage/emulated/0/DCIM/android_100394_20230807_162805_5465009.mp4: corrupt input packet in stream 1
E/ffmpeg-kit: [h264 @ 0xb400007c6c210750] Invalid NAL unit size (63547 > 20190).
E/ffmpeg-kit: [h264 @ 0xb400007c6c210750] Error splitting the input into NAL units.
E/ffmpeg-kit: Error while decoding stream #0:1: Invalid data found when processing input


  &#xA;

  I've tried to use this -fflags +discardcorrupt, but the result is still the same. The duration of the video that has been watermarked does not match the original video.

  &#xA;

• Evolution #3179 : Pouvoir désactiver l’héritage de logo entre les rubriques (via une constante)

  13 mars 2014, par b b

  Ça me semble être une bonne idée, sans ça on est obligé de fourber à coup de :

  [(#LOGO_RUBRIQUE|matchrubon#ID_RUBRIQUE\.|oui)[(#LOGO_RUBRIQUE|image_reduire150,150)]]

  Reste à voir si le nom de la constante convient à tout le monde et hop commit :)

• How to merge two audio files while retaining correct timings with ffmpeg

  31 août 2017, par andy

  Disclaimer : I don’t understand ffmpeg and mostly just copy commands

  I have two webm video files. Their duration is off by about a second.

  I converted these to mp4 and everything was fine :

  ffmpeg -acodec libopus -i 1.webm -r 10 -cpu-used 5 -c:v libx264 -crf 20 -c:a aac -strict experimental -loglevel error 1.mp4

  I then extracted the audio from each video and everything was fine. By fine, I mean, when I playback the audio files by themselves they match the timings on the original video. I used this command to extract the audio :

  fmpeg -i 1.mp4 -map 0:a -vn -acodec copy 1audio.m4a

  I now have two audio tracks and I want to combine them into one, I want to "overlay" them, AND I want to keep the timings the same as they were.

  BUT, whenever I try and combine the audio the timings are off. The "seconds" don’t match the original single audio files.

  I have tried these commands to merge the audio :

  ffmpeg -i 1audio.m4a -i 2audio.m4a -filter_complex "[0:a][1:a]amerge=inputs=2[a]" -map [a] -c:a libfdk_aac mergedaudio.m4a

  ffmpeg -i 2audio.m4a -i 1audio.m4a -filter_complex amix=inputs=2:duration=first mergedaudio.m4a

  ffmpeg -i 1audio.m4a -i 2audio.m4a -filter_complex amerge -ac 2 -c:a libfdk_aac -vbr 4 mergedaudio.m4a

  All the above command have resulted in a merged audio file... but the timings are off.

  What am I doing wrong ?