PES length on video stream warning

[Jaan]

After updating the software for my H264 video capture device, TS Doctor now gives me the following warning message on all new files: "PES length on video stream detected. This can be problematic! Patch PES length on video stream to a save value?" with a yes/no choice. First, am I correct to think "save value" is a typo and "safe value" was intended? I would like to understand how the PES length can be problematic, and what the implications of one choice or the other might be. Is this subject discussed somewhere?

[Derrick]

To indicate the length of a PES packet only 16 bits are available. Normally video_pes_packets are longer. That's why the default length is 0.

from ISO 13818-1:

PES_packet_length – A 16-bit field specifying the number of bytes in the PES packet following the last byte of the
field. A value of 0 indicates that the PES packet length is neither specified nor bounded and is allowed only in
PES packets whose payload consists of bytes from a video elementary stream contained in Transport Stream packets.

If the length of a video_pes_packet has defined length other than 0, it is suspicious

[Jaan]

Thanks Derrick. So am I correct to infer that answering "yes" to the dialog box will set the value to zero, which should never be a problem?

[Djfe]

First, am I correct to think "save value" is a typo and "safe value" was intended?

yep, that's a typo -> it should be "safe value"

I think patching the value doesn't do any harm, rather to the contrary
so just click yes and fix your recordings

[Jaan]

Safe, like a Folksvagen, right?    Thanks for the fast and helpful replies!