Handbrake transcode error with H.265 QSV only

Andrew Manitsas · May 3, 2020

Hello everyone.

I have a weird problem with handbrake. Due the the quarantine, my university broadcasts the lessons via zoom. And I though it was a good idea to use OBS and record them for personal use, in case i want to go back and view something. But after a few weeks, the space taken by the video files started to be too much. So I though, why not transcode them to H265. Thats should help. So after a few practice runs on short videos to figure out the settings on handbrake, I was confident to get on transcoding the 50+h of uni lessons. Only one small problem. Only when selecting the H.265 (QSV) encoder, handbrake gives an error and cannot complete the transcode. Software H.265 (x265) plus hardware and software H.264 (x264 or QSV) work just fine. Also on my short practice runs, hardware H.265 worked fine. Only with the recorded uni lessons that I want to transcode it errors out. Im no expert in video formats and encoding/decoding although I study ECE so im quite familiar with how things work. I've attached one of the log files to see what kind of error it spits out. Its always the same

qsv_hevc_make_header: MFXVideoENCODE_EncodeFrameAsync failed (-5)
encqsvInit: qsv_hevc_make_header failed
Failure to initialise thread 'Quick Sync Video encoder (Intel Media SDK)'

If anyone has any idea what is causing it, I'd love to hear cause it seems to weird to work on most videos expect the one I really want to transcode.

And to clarify, my PC is actually an Acer Aspire 15'' laptop (Intel Core i7-8550U / 20GB RAM / Nvidia MX150 25w). At first I though I'd use the NVENC on the MX150. And then I found out that it doesnt have the encode/decode IC... So Intel iGPU it is... Cause letting it do the software x265 transcode would be a death sentence for the laptop it self and my nerves cause I have to use it 10+h per day for uni and work. It has to be something that can be run relatively easily on the background.

Thanks everyone in advance.

Αριθμητική Ανάλυση Μ8 30.04.2020-1_preview.mp4 05-03-2020 22-57-58.txt