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I'm hoping someone could shed some light as to what's going on here.

I was able to get Handbrake installed on my Synology DS920+ NAS with Intel Quick Sync support. Using the exact same settings that I do on my local installation of Handbrake, the file size and end results appear vastly different.

I've tested different video files, but also the exact same one.

For example:

  • Original file H.264 1.3 GiB 18.1MBits/s bitrate
  • Handbrake local H.265 459 MiB 6.42 Mbits/s bitrate
  • Handbrake docker H.265 973 MiB 13.6 Mbits/s bitrate

My settings are:

  • Video encoder: H.265 (Intel QSV)
  • Framerate: Same as source
  • Variable framerate
  • Preset: Quality
  • Constant Quality: ICQ 32
  • Multi-pass encoding enabled.
  • Profile: Auto
  • Level: Auto
  • Filters: off
  • Dimensions: default (no resize, rescale, etc.)
  • Audio: AAC (avcodec) (mono)
  • Web optimized: Yes
  • Align A/V start: Yes
  • Passthrough Common Metadata: Yes

Is there an oversight that I'm missing that could explain this? I'd rather use the Docker version, since it doesn't tie up my main laptop.

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[-] non_burglar@lemmy.world 1 points 1 year ago

Your settings are not 1 to 1 on both systems, you'll have to identify what "auto" means in each context, it's variable depending on where ffmpeg lives.

[-] Showroom7561@lemmy.ca 1 points 1 year ago

Unfortunately, the only other alternative to "auto" under Profile is "main", which I have no idea what it does.

And under level, it's either "auto" or a bunch of numbers.

That said, I was under the impression that any manual settings would override the settings in the "auto" profile. Is that not the case?

this post was submitted on 24 Jul 2025
20 points (100.0% liked)

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