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I have a bunch of files with .bgra file extension. An example:

mediainfo -f  mpv/my_mpv_thumbnails/Digimon\ Frontier\ Folge\ 331_2_\ Die\ wahre\ Macht...360p_H.264-AAC-43348694/000100.bgra 
General
Count                                    : 347
Count of stream of this kind             : 1
Kind of stream                           : General
Kind of stream                           : General
Stream identifier                        : 0
Complete name                            : mpv/my_mpv_thumbnails/Digimon Frontier Folge 331_2_ Die wahre Macht...360p_H.264-AAC-43348694/000100.bgra
Folder name                              : mpv/my_mpv_thumbnails/Digimon Frontier Folge 331_2_ Die wahre Macht...360p_H.264-AAC-43348694
File name extension                      : 000100.bgra
File name                                : 000100
File extension                           : bgra
File size                                : 120000
File size                                : 117 KiB
File size                                : 117 KiB
File size                                : 117 KiB
File size                                : 117 KiB
File size                                : 117.2 KiB
Stream size                              : 120000
Stream size                              : 117 KiB (100%)
Stream size                              : 117 KiB
Stream size                              : 117 KiB
Stream size                              : 117 KiB
Stream size                              : 117.2 KiB
Stream size                              : 117 KiB (100%)
Proportion of this stream                : 1.00000
File last modification date              : 2021-04-01 13:18:42 UTC
File last modification date (local)      : 2021-04-01 15:18:42

These are all thumbnails that were generated from this mpv-thumbnail-script.

Sadly the display command does not work

display -size 32x24 -depth 8 mpv/my_mpv_thumbnails/FFXIII-2\ Sazh\ DLC\ Heads\ or\ Tails\ FULL\ playthrough\ 720p-743938096/000100.bgra 
display-im6.q16: unexpected end-of-file `mpv/my_mpv_thumbnails/FFXIII-2 Sazh DLC Heads or Tails FULL playthrough 720p-743938096/000100.bgra': No such file or directory @ error/bgr.c/ReadBGRImage/246

I hope this was correct this way. (yes the file exists)

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  • Try this: xnview Commented Jan 13, 2025 at 22:07

1 Answer 1

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ImageMagick is able to create and view .bgra files.

  1. Install ImageMagick with sudo apt install imagemagick

  2. Use ImageMagick to create a .bgra file from input.png (your original input file).

    convert input.png -depth 8 rgba:output.bgra

    The output.bgra that is created by the above command will not have its original thumbnail image, however it can still be viewed in ImageMagick. Since bgra is a RAW image format the output bgra file was much larger than the input png file, input.png, which was almost 10 times larger than a similar jpg file to begin with.

  3. View the .bgra file in ImageMagick: k display -size WidthxHeight -depth 8 bgra:output.bgra

    Replace WidthxHeight with the dimensions of the original input.png image. Please create and save a text file with the dimensions of the original input.png file as a backup in case you delete the original input.png file.

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  • note that OP indicates they have bgra files and want to view it, not convert PNG to bgra. Just making sure you keep the answer narrow enough ;) Commented Jan 14, 2025 at 2:01
  • 1
    Unfortunately I don't have a link to download a .bgra extension file, so meanwhile I made a large high resolution .bgra file by converting a ,png image file that I had, and it looks quite good. Commented Jan 14, 2025 at 2:08

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