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doc:appunti:linux:video:ffmpeg

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doc:appunti:linux:video:ffmpeg [2019/03/16 07:47] – [Add an Audio Track] niccolodoc:appunti:linux:video:ffmpeg [2019/05/31 14:24] – [Final rendering (re-encoding)] niccolo
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 Sometimes we needed to mix video clips originating from different sources. To apply our simple cut-and-paste recipe (wich preserve the original video quality, without re-encoding), we normalized all the "different" video clips to the same format as the one produced by the Xiaomi Yi camera. Sometimes we needed to mix video clips originating from different sources. To apply our simple cut-and-paste recipe (wich preserve the original video quality, without re-encoding), we normalized all the "different" video clips to the same format as the one produced by the Xiaomi Yi camera.
  
 +One annoying effect of videos created by joining clips with different encoding parameters, is seen in **mplayer**: if you switch the play at **full screen**, the videos jumps back automatically at **non-full screen** when there is such a clip join.
 ==== Normalize (Resize and Re-encode) ==== ==== Normalize (Resize and Re-encode) ====
  
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 ^ Video codec    | XViD4  | ^ Video codec    | XViD4  |
 ^ Video filter   | swresize, 1366x768, Bilinear  | ^ Video filter   | swresize, 1366x768, Bilinear  |
-^ Video bitrate  | Two Pass, average bitrate 6000 kb/s  |+^ Video bitrate  | Two Pass, average bitrate 6000 kb/s (about 3 Gb per hour)  |
 ^ Audio codec    | Lame MP3  | ^ Audio codec    | Lame MP3  |
-^ Audio bitrate  | CBR 192  |+^ Audio bitrate  | CBR 192 (or higher)  |
  
 ====== More on ffmpeg Command Line ====== ====== More on ffmpeg Command Line ======
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 Per doppiare un video sostitutendo o mixando l'audio originale con musiche, ecc. si può utilizzare il programma Ardour. In questi appunti un possibile metodo di lavoro da utilizzare. Per doppiare un video sostitutendo o mixando l'audio originale con musiche, ecc. si può utilizzare il programma Ardour. In questi appunti un possibile metodo di lavoro da utilizzare.
  
 +Per alcuni suggerimenti vedere il paragrafo sull'uso di **[[..:audio_video#mouse_e_tastiera|mouse a testiera con Ardour]]**.
 ===== Estrazione traccia audio originale ===== ===== Estrazione traccia audio originale =====
  
doc/appunti/linux/video/ffmpeg.txt · Last modified: 2024/07/25 08:12 by niccolo