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• Python ffmpeg does not save the mp4 clips to file

  30 janvier 2021, par oo92

  I'm using the ffmpeg Python library to save 60 second mp4 clips to file from Twitch livestreams using its API. This is my code :

  


  current_dir = os.getcwd()

client = TwitchClient(client_id='')
streams_now = client.streams.get_live_streams(limit=100, offset=900)
epoch = str(math.ceil(time.time()))

if not os.path.exists(current_dir + '/twitch_videos/'):
    os.mkdir(current_dir + '/twitch_videos/')

for i in range(0, 1):
    try:
        username = streams_now[i]['channel']['name']
        id = streams_now[i]['id']
        game = streams_now[i]['game']
        game = game.translate(str.maketrans({':': '-', ' ': '-', "'": '', '!': '', '&': '_', '.': '', '+': '_'}))
        streaming = streamlink.streams('http://twitch.tv/' + username)
        stream = streaming["best"].url

        twitch_stream = ffmpeg.input(stream)

        twitch_stream = ffmpeg.filter(twitch_stream,
                                      'fps',
                                      fps=1,
                                      round='up')

        twitch_stream = ffmpeg.output(twitch_stream,
                                      current_dir + '/twitch_videos/' + '%d_' + username + '_' + epoch + '.mp4',
                                      sc_threshold='0',
                                      g='60',
                                      f='segment',
                                      segment_time='600',
                                      segment_format_options='movflags=+faststart',
                                      reset_timestamps='1')frl3dqgn21bbpp6tajjvg5pdevczac
        ffmpeg.run(twitch_stream)


    except:
        pass


  


  I am concatenating the path it should go to, to the name of the file. But the folder is empty after I take a look.

  


• Convert 10bit Apple pro res 422 HQ video mov to png without changing color format using ffmpeg only 2 png created [closed]

  15 janvier 2024, par Mark Brady

  I am looking to convert a 'Formats : 10-Bit ProRes 422 (2K)' .MOV to PNGs, I saw this post and got the following information / questiosn.

  


  This is form this post form awhile ago.
Convert 10bit Apple pro res 422 HQ video mov to png without changing color format using ffmpeg

  


  I ran this command
ffmpeg -i "Hyper.mov" -vf fps=1 -pix_fmt rgba -sws_flags +accurate_rnd+bitexact+full_chroma_int "out-%04d.png" on a short mov in the format of Formats : 10-Bit ProRes 422 (2K)

  


  From this site, it is a hyper warp mov (effect), I want to convert into either pngs or a gif or a flipbook of 8x8 (which is prob to small to do it all, but maybe a few 8x8x) end goal is getting the effect in Roblox

  


  The mov is from this site
https://www.actionvfx.com/collections/free-blasters-stock-footage/8798

  


  The hyper one.

  


  When I did the command it only generated 2 images, perhaps the start frame and the end.

  


  Does anyone know why it only did 2 images ?

  


  [enter image description here](https://i.stack.imgur.com/REDDx.jpg)

  


  In the post I saw this, it has 'without changing color format ', which I do not know if I need that... just trying to get the effect mov into png or a flipbook

  


  Thanks

  


  Tried the above syntax and expecting it to generate a bunch of pngs, not just 2.

  


• drawertext color with conditon ffmpeg

  31 octobre 2022, par abderrahim khadri

  I have a coin price banner where I use ffmpeg to stream it and use reload:1 to render it in real time. I want to color the negative with red and the positive with green , haw to do it and is it posible with fflmpeg

  


  -vf 'drawtext=enable='between(t,18.93,20.28)':fontfile=fonts/cousine-bold.ttf:fontsize=144:fontcolor_expr=%{eif\\: if(between(0,1000)\, green\, red) \\: x}:x=82:y=288:text=coinsprice.txt:reload:1'