Sume allows 256 px output; TikTok's API minimum is 360

Yes, the two ranges disagree: Sume accepts output width and height from 256 to 2160, while TikTok's media transfer guide gives a minimum of 360 px and a maximum of 4096 px. Sizes from 256 to 359 would render in Sume and then fall under TikTok's minimum. Sume's own ceiling of 2160 never reaches TikTok's 4096.

Where the gap bites

The default Timeline output is 1080x1920, so a caller who omits output is safe. The gap only matters when you shrink on purpose, for example to make a small preview, and then reuse the same body for a TikTok upload. The trim docs show the same 256 to 2160 range on the optional output conform, which is also exact-precision only (a keyframe cut with output returns video_trim_output_requires_exact).

Nothing in Sume's docs says it will raise a size to 360 for you, and the API does not know where you will upload the file. Add the check in your own code.

A guard to run before upload

This function returns the sizes that Sume will render but TikTok's guide would not accept. It only compares numbers, so it runs anywhere.

def tiktok_ok(width, height, lo=360, hi=4096):
    return lo <= width <= hi and lo <= height <= hi

def sume_ok(width, height):
    return all(256 <= v <= 2160 and v % 2 == 0 for v in (width, height))

for size in [(1080, 1920), (360, 640), (256, 454), (720, 1280)]:
    print(size, "sume", sume_ok(*size), "tiktok", tiktok_ok(*size))

What else the guide says

The same page lists MP4 (recommended), WebM and MOV, codecs H.264 (recommended), H.265, VP8 and VP9, a frame rate of 23 to 60, durations up to 10 minutes via the API and a 4 GB file limit. It adds that individual users may have lower limits.