Previous response had warnings:
WARNINGS: - Extra text detected before JSON object
- Extra text detected after JSON object

New Terminal Output:

root@d7299c7f5982:/app# python3 -c "
_non_space + n_frames) - max_bytes} more bytes')
"
> import struct
> with open('/app/frames.tza', 'rb') as f:
>     magic = f.read(4)
>     width, height = struct.unpack('<HH', f.read(4))
>     n_frames, max_bytes = struct.unpack('<II', f.read(8))
>     frames = [f.read(width * height) for _ in range(n_frames)]
>
> prev = b' ' * (width * height)
> to_space = 0
> from_space = 0
> to_non_space = 0
> from_non_space = 0
>
> for frame in frames:
>     for i in range(width * height):
>         if prev[i] != frame[i]:
>             if prev[i] == ord(' '):
>                 from_space += 1
>             else:
>                 from_non_space += 1
>             if frame[i] == ord(' '):
>                 to_space += 1
>             else:
>                 to_non_space += 1
>     prev = frame
>
> print(f'Changes from space: {from_space}')
> print(f'Changes to space: {to_space}')
> print(f'Changes from non-space: {from_non_space}')
> print(f'Changes to non-space: {to_non_space}')
> print(f'\nIf we can avoid writing spaces: {to_non_space + n_frames} bytes')
> print(f'Budget: {max_bytes}')
> print(f'Would still need: {(to_non_space + n_frames) - max_bytes} more bytes')
> "
Changes from space: 17839
Changes to space: 16941
Changes from non-space: 139477
Changes to non-space: 140375

If we can avoid writing spaces: 141575 bytes
Budget: 69000
Would still need: 72575 more bytes
root@d7299c7f5982:/app#
