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How can I Use a palette to encode a GIF using ffmpeg?

See original GitHub issue

Like this : ffmpeg -i input.mkv -i palette.png -lavfi paletteuse output.gif

import ffmpeg
in_filename='C:\Users\Administrator\Desktop\py\img\'
(
ffmpeg
.input(in_filename+'girl.gif')
# .filter('palettegen', stats_mode='full')
# .output(in_filename+'palettegen_full.png')
.filter(filter_name='paletteuse', dither='bayer')
.output(in_filename+'paletteuse_bayer.gif')# , vframes=1, format='image2', vcodec='mjpeg'
.run(input=b'y')
)

##Error:

Cannot find a matching stream for unlabeled input pad 1 on filter Parsed_paletteuse_0
Traceback (most recent call last):
File ".../test_little.py", line 116, in 
.run(input=b'y')
File "...\venv\lib\site-packages\ffmpeg_run.py", line 305, in run
raise Error('ffmpeg', out, err)
ffmpeg._run.Error: ffmpeg error (see stderr output for detail)

Issue Analytics

State:
Created 4 years ago
Comments:7 (3 by maintainers)

Top GitHub Comments

2reactions

kkroeningcommented, Jun 3, 2019

Instead of using ffmpeg.concat, use the multi-input form of ffmpeg.filter. e.g.:

(
    ffmpeg.filter(
        [
            ffmpeg.input(in_filename+'girl.gif'),
            ffmpeg.input(in_filename+'palettegen-1.png'),
        ],
        filter_name='paletteuse',
        dither='heckbert',
        new='False',
    )
    .output(in_filename+'output.gif')
    .run(overwrite_output=True)
)

0reactions

SmallChocolatecommented, Apr 19, 2019

Aha,I got it.Although the output image is not the clarity I want, perhaps it is not appropriate for me to generate a palette. Thank you.

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