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Sur d’autres sites (9808)

  • Moviepy Making a CompositeVideoClip of two concatenate_videoclips

    16 avril 2018, par Max Better

    Working with the Moviepy lib and I’ve been beating my head off a wall with this last step for a while.

    GifClips = concatenate_videoclips(TheGIFs, method='compose')
    
TextClips = concatenate_videoclips(TheTexts, method='compose')

    I’ve written both of these to separate files and they look fine. But I’m having a problem getting them to combine properly.

    I’m trying :

    FinishedClips = CompositeVideoClip([GifClips, TextClips], size=(1920,1080))

    It has the audio from TextClips and shows the GifClips but the text isn’t visible. It did show when written alone without the composite.

    It does work if I combine GifClips with a single TextClip but this doesn’t work when I need text clips to run one after another.

    I could run a CompositeVideoClip with every single TextClip and a part of the GifClips and then concatenate them all together but that doesn’t seem like the neatest way of doing this. My guess is there’s a fairly obvious argument here somewhere but looking through the docs and examples I’m struggling so far.

    Any suggestions on how I could get the TextClips clip to show up properly in a composite would be much appreciated.

  • lavc/h264dec : Improve "Increasing reorder buffer" message loglevel.

    23 août 2016, par Carl Eugen Hoyos
    lavc/h264dec : Improve "Increasing reorder buffer" message loglevel.

    Do not show the message for the first frame by default, show a
    
warning if increasing is necessary in the middle of the stream.
    • [DH] libavcodec/h264dec.c

  • FFMPEG interactive Mode help options

    7 février 2018, par Pliny Ida Plisetsky

    While streaming a simple command like below

    ffmpeg -i "Alien.mkv" -f webm tcp://localhost:8080/listen.webm

    if I press ’ ?’ ffmpeg seems to have an interactive mode with the below options

       ?      show this help
    

    
   +      increase verbosity 
    

    
   -      decrease verbosity 
    

    
   c      Send command to first matching filter supporting it 
    

    
   C      Send/Queue command to all matching filters 
    

    
   D      cycle through available debug modes
    

    
   h      dump packets/hex press to cycle through the 3 states 
    

    
   q      quit 
    

    
   s      Show QP histogram

    I was curious about option ’c’

    Does this mean that I can execute further commands on the running stream ? Say for instance seeking a new position in a running stream ? (I realise you wouldn’t normally do this)

    I don’t really know anything about these and couldn’t find much in the ffmpeg documentation or else where. If I press ’c’ it suggests the syntax I should use is :

    Enter command: <target>|all <time>|-1 <command>[ <argument>]
    
</argument></command></time></target>

    but I still don’t really understand how to execute a command. Would someone please give a few examples ? I suspect that this isn’t used much.

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