Extremely slow Decoding for 4k HEVC cell phone video but not 4k HEVC M

[Catalyph 7]

when decoding 4k HEVC video files from my samsung galaxy s24 ultra, emby struggles and goes about 11fps but when decoding regular movies not from my phone it goes extremely fast, like 120fps. Is there something in my Cell videos that is causing this?

Samsung Cell Phone video:

Emby Web 4.8.0.80

Chrome Windows

192.168.0.69 http/1.1

Stream

MP4 (144 mbps)

HLS (60 mbps 13 fps)

Reducing bitrate due to quality setting

Video

4K HDR 10 HEVC

Transcode (H264 60 mbps)

Tone Mapping (Hable)

Audio

English AAC stereo (Default)

Direct Play (256 kbps)

 

4k HEVC Movie

Emby Web 4.8.0.80

Chrome Windows

192.168.0.69 http/1.1

Stream

MKV (28 mbps)

HLS (42 mbps 373 fps)

Converting subtitles directly into video

Video

Avengers.Endgame.2019.2160p.BluRay.x265.10bit.SDR.DTS-HD.MA.TrueHD.7.1.Atmos-SWTYBLZ

Transcode (H264 42 mbps)

Audio

English Avengers.Endgame.2019.2160p.BluRay.x265.10bit.SDR.DTS-HD.MA.TrueHD.7.1.Atmos-SWTYBLZ

Transcode (MP3 192 kbps)

 

[Luke 37099]

 

Hi there, let's look at an example. Please attach the information requested in how to report a media playback issue. Thanks!

 

[Catalyph 7]

See attached.

embyserver.txt ffmpeg-transcode-ac8b2821-ff66-4634-a2f9-0de26f72c9e6_1.txt ffmpeg-transcode-60084af7-73e4-4db6-8be7-2f38ddd12de7_1.txt

[Happy2Play 8296]

Devs may have to break it down but one decoding was done in software and the other in hardware.

&TranscodeReasons=ContainerBitrateExceedsLimit

>>>>>>  Selected Codecs
Decoder Automatic software decoder

Encoder NVENC NVIDIA GeForce GTX 1660 SUPER - H.264 (AVC)
        Adapter #0: 'NVIDIA GeForce GTX 1660 SUPER' ComputeCapability: 7.5
        Max Bitrate: 781 Mbit/s - Frame Sizes: max 4096x4096 - Width Alignment: 2 - Height Alignment: 2
        Color Formats: NV12, P010, P016 - Bit Depths: 8, 10, 12, 14, 16
        Profiles: Baseline Profile (Level 6.2), Main Profile (Level 6.2), High Profile (Level 6.2), High 4:4:4 Predictive Profile (Level 6.2)


>>>>>>  FindVideoDecoder - MediaType: hevc, UseHardwareCodecs: True, HWA-Mode: Advanced
Info    Checking: 'CUVID NVIDIA GeForce GTX 1660 SUPER - H.265 (HEVC)'
NoMatch Bitrate (138 Mbit/s) exceeds maximum supported rate (117 Mbit/s)
Info    Decoder does not match
Info    Checking: 'NVDEC NVIDIA GeForce GTX 1660 SUPER - H.265 (HEVC)'
NoMatch Bitrate (138 Mbit/s) exceeds maximum supported rate (117 Mbit/s)
Info    Decoder does not match
Info    Checking: 'Automatic software decoder'
Info    Check successful - selecting 'Automatic software decoder'

It appears to be a bitrate issue as it exceeds the 117Mbps limit set on hardware. @Catalyph

 

Edited February 14 by Happy2Play

[Catalyph 7]

So if it exceeds the max bitrate is switches over to very slow?

Is there a setting I can change the max supported rate or is that a none adjustable setting ?

[rbjtech 4284]

On 15/02/2024 at 13:23, Catalyph said:

So if it exceeds the max bitrate is switches over to very slow?

Is there a setting I can change the max supported rate or is that a none adjustable setting ?

It's a hardware limitation - but is there any reason you are trying to use a 4K @ 138Mbit/sec - that is very close the maximum UHD specification of 144Mbit/sec!

I see the source is from a samsung s24 - that is just an insane bitrate.    I get you want 4K 60fps - but 30-40 Mbit/sec is more than ample for very good quality - maybe you have settings on the phone to reduce it ?   

[Luke 37099]

@Catalyph?

[Catalyph 7]

Sorry..  o reason.. it is just the option on my phone to record with high bit rate.. I didn't know it was THAT high... I have unselected the option amd video is decoded and performs just fine.. not sure why they have this option on a cell phone.. or if it is worth that much extra space.