revid: Sending MTS with PATs more than 1MB apart

[Alan Noble]

VidGrind relies on finding PAT packets in incoming MTS data at intervals of 1MB or less. This ensures that each MtsMedia entities starts with a PAT. When VidGrind cannot find a PAT before it reaches 1MB, it is forced to split the MTS to comply with GAE’s 1MB blob size limit.

GAE log excerpt follows. Note that 00:00:00:00:02:ED is the Glenelg camera.

DEFAULT 2023-11-26T05:44:33.780233Z 2023/11/26 05:44:33 splitting large clip of 1599880 bytes at 999972
DEFAULT 2023-11-26T05:44:33.780222Z 2023/11/26 05:44:33 could not find suitable PAT at which to split
DEFAULT 2023-11-26T05:44:33.580133Z [protoPayload.method: POST] [protoPayload.status: 200] [protoPayload.responseSize: 264 B] [protoPayload.latency: 282 ms] [protoPayload.userAgent: Go-http-client 1.1] /recv?vn=161&ma=00:00:00:00:02:ED&dk=61789801&ut=17962&V0=1599880