Inconsistent results between HB and FFmpeg x265

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DougH
Posts: 18
Joined: Fri Sep 23, 2016 12:52 am

Inconsistent results between HB and FFmpeg x265

Post by DougH »

Description of problem or question
I originally noticed that when I converted a MKV file to an x265 encoded MP4 file that VLC showed severe pixalation issues, e.g. grey blocky screen. After digging around some I found the Extra video options and assigned keyint=1. This resolved the grey blocky screen but the picture seemed to stutter. I continued adding options as I read through the x265 documentation but nothing resolved the issue. I increased the bitrate and again nothing resolved. I thought perhaps this was a VLC issue because others reproted the same or similar problems so I tried with MPlayer. The stuttering wasn't as bad but the audio was out of sync.

I decided to stick with VLC, not wanting to introduce another variable into the mix. I decided to re-encoded the clip with FFmpeg using the exact same x265 params as I had used with HB using their x265 guided for two-pass and the issue was resolved.

Steps to reproduce the problem (If Applicable)
I used a custom preset but even the built-in preset of "H.265 MKV 1080p30" produced the same grey screen/blocky result. The command I used were:

handbrakecli -i Aliens.mkv -o Aliens.mp4 --preset="H.265 MKV 1080p30" 2> log
handbrakecli -i Aliens.mkv -o Aliens.mp4 --preset-import-file custom265.json 2> log

HandBrake version (e.g., 1.0.0)


Operating system and version (e.g., Ubuntu 16.04 LTS, macOS 10.3 High Sierra, Windows 10 Creators Update)

Windows 10 Fall Creator's Update (1709)

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No error messages

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