
Hi,
I’ve found a reproducible bug in the Publer Android app when attaching a video
to a new post. The upload fails immediately with:
failed to create upload, caused by SyntaxError: JSON Parse error: Unexpected
end of input, originated from request (method: POST,
url: https://app.publer.com/upload, response code: n/a, response text: n/a,
request id: n/a)
I bisected it using the same source video re-encoded at different bitrates.
Identical codec, resolution, duration and container — only the file size changes:
7,148,507 bytes (7.15 MB) — uploads fine
7,7xx,xxx bytes (7.7 MB) — uploads fine
8,171,687 bytes (8.17 MB) — FAILS
9,178,289 bytes (9.18 MB) — FAILS
12,745,349 bytes (12.75 MB) — FAILS
The cutoff is at 8,000,000 bytes.
The important part: every one of those files uploads without any problem through
the web app at app.publer.com. Only the Android app rejects them. Videos from
other sources (WhatsApp) show the same pattern — anything above ~8 MB fails in
the app and works on the web.
File details: MP4, H.264 High profile level 4.0, 1080x1920, 30 fps, AAC audio.
Device: Google Pixel 10 Pro, Android 17 (API 37), on Wi-Fi.
Publer app version: 2.4.7 (build 1992).
Your documentation states a 512 MB limit for videos, so this looks like an
unintended limit or a buffer issue in the app’s uploader rather than a policy.
Two suggestions:

Hi @Enrique Márquez Turrillo
We are aware of issues with upload, the team is looking into it. Please reach out to the live chat for updates on this one.

Good morning, I updated the app yesterday with the new update, but the problem continues.

Thanks for the update, Enrique.
The issue is still being investigated by our team, so the latest app update has not fully resolved it yet. In the meantime, please continue using the Publer web app at https://app.publer.com, where video uploads should work normally.
We appreciate your patience and the detailed information you provided. It has been very helpful for our investigation.