Is Constant Quality relative to the encoder being used?
ie would CQ of 21 on NVEnc h265 produce the same output quality as CQ 21 using software h.265?
The reason I ask is I am getting vastly different file sizes. I've read that NVEnc is faster, but produces larger files, and I was prepared for some variance, but this seems too good to be true...
Steps to reproduce the problem (If Applicable):
- The original source with audio is 24GB
- converted to h265 using NVEnc, and a quality setting of 21 : 4.82GB
- converted to h265 with software encoder (8bit) "Slow", CQ21: 1.68GB
- converted to h265 with software encoder (10bit) "Slow", CQ21: 1.72GB
HandBrake version 1.3.0
Operating system and version windows 10 64 bit 1909:
HandBrake Activity Log:
(I did two software encodes overnight, the log below appears to be from the 10 bit encode)
Code: Select all
HandBrake 1.3.0 (2019110900)
OS: Microsoft Windows NT 10.0.18363.0
CPU: Intel(R) Core(TM) i7-9700K CPU @ 3.60GHz
Ram: 32685 MB,
GPU Information:
NVIDIA GeForce RTX 2080 Ti - 26.21.14.4166
Screen: 5120x2160
Temp Dir: C:\Users\user1\AppData\Local\Temp\
Install Dir: C:\Program Files\HandBrake
Data Dir: C:\Users\user1\AppData\Roaming\HandBrake
-------------------------------------------
# Starting Encode ...
[01:28:57] base preset: CQ 22 HQ 1080p H.265 Nvidia (Modified)
[01:28:57] hb_init: starting libhb thread
[01:28:57] Starting work at: Fri Dec 20 01:28:57 2019
[01:28:57] 1 job(s) to process
[01:28:57] json job:
{
"Audio": {
"AudioList": [
{
"DRC": 0.0,
"Encoder": "copy",
"Gain": 0.0,
"Mixdown": -1,
"NormalizeMixLevel": false,
"Samplerate": 0,
"Track": 0,
"DitherMethod": 0
}
],
"CopyMask": [
"copy:aac",
"copy:ac3",
"copy:dtshd",
"copy:dts",
"copy:eac3",
"copy:flac",
"copy:mp3",
"copy:truehd"
],
"FallbackEncoder": "none"
},
"Destination": {
"ChapterList": [
{
"Name": "Chapter 1"
},
{
"Name": "Chapter 2"
},
{
"Name": "Chapter 3"
},
{
"Name": "Chapter 4"
},
{
"Name": "Chapter 5"
},
{
"Name": "Chapter 6"
},
{
"Name": "Chapter 7"
},
{
"Name": "Chapter 8"
},
{
"Name": "Chapter 9"
},
{
"Name": "Chapter 10"
},
{
"Name": "Chapter 11"
},
{
"Name": "Chapter 12"
},
{
"Name": "Chapter 13"
},
{
"Name": "Chapter 14"
},
{
"Name": "Chapter 15"
},
{
"Name": "Chapter 16"
},
{
"Name": "Chapter 17"
},
{
"Name": "Chapter 18"
},
{
"Name": "Chapter 19"
},
{
"Name": "Chapter 20"
},
{
"Name": "Chapter 21"
}
],
"ChapterMarkers": true,
"AlignAVStart": false,
"File": "C:\\Users\\user1\\Videos\\Before I Fall-21 software 10 bit base slow.mkv",
"Mp4Options": {
"IpodAtom": false,
"Mp4Optimize": false
},
"Mux": "mkv"
},
"Filters": {
"FilterList": [
{
"ID": 12,
"Settings": {
"crop-bottom": "140",
"crop-left": "0",
"crop-right": "0",
"crop-top": "140",
"height": "800",
"width": "1920"
}
},
{
"ID": 6,
"Settings": {
"mode": "0"
}
}
]
},
"PAR": {
"Num": 1,
"Den": 1
},
"Metadata": {},
"SequenceID": 0,
"Source": {
"Angle": 1,
"Range": {
"Type": "chapter",
"Start": 1,
"End": 21
},
"Title": 26,
"Path": "\\\\server\\share\\BEFORE_I_FALL.iso"
},
"Subtitle": {
"Search": {
"Burn": false,
"Default": false,
"Enable": false,
"Forced": false
},
"SubtitleList": [
{
"Burn": false,
"Default": false,
"Forced": false,
"ID": 1,
"Offset": 0,
"Track": 0
}
]
},
"Video": {
"Encoder": "x265_10bit",
"Level": "auto",
"TwoPass": false,
"Turbo": false,
"ColorMatrixCode": 0,
"Options": "",
"Preset": "slow",
"Profile": "auto",
"Quality": 21.0,
"QSV": {
"Decode": false,
"AsyncDepth": 0
}
}
}
[01:28:57] CPU: Intel(R) Core(TM) i7-9700K CPU @ 3.60GHz
[01:28:57] - Intel microarchitecture Kaby Lake
[01:28:57] - logical processor count: 8
[01:28:57] Intel Quick Sync Video support: no
[01:28:57] hb_scan: path=\\server\share\BEFORE_I_FALL.iso, title_index=26
src/libbluray/bdj/bdj.c:133: Error opening registry key SOFTWARE\JavaSoft\Java Runtime Environment\
src/libbluray/bdj/bdj.c:746: BD-J check: Failed to load JVM library
src/libbluray/bdj/bdj.c:133: Error opening registry key SOFTWARE\JavaSoft\Java Runtime Environment\
src/libbluray/bdj/bdj.c:746: BD-J check: Failed to load JVM library
[01:28:57] scan: BD has 27 title(s)
[01:28:57] bd: scanning title 26
[01:28:57] bd: playlist 00800.MPLS
[01:28:57] bd: duration is 01:38:47 (5927963 ms)
[01:28:57] bd: video id=0x1011, stream type=H.264, format 1080p
[01:28:57] bd: aspect = 16:9
[01:28:57] bd: audio id=0x711100, lang=English (DTS), 3cc=eng
[01:28:57] bd: audio id=0x1100, lang=English (DTS-HD MA), 3cc=eng
[01:28:57] bd: subtitle id=0x1200, lang=English [PGS], 3cc=eng
[01:28:57] bd: subtitle id=0x1201, lang=español [PGS], 3cc=spa
[01:28:57] bd: chap 1, 323448 ms
[01:28:57] bd: chap 2, 289872 ms
[01:28:57] bd: chap 3, 241199 ms
[01:28:57] bd: chap 4, 489155 ms
[01:28:57] bd: chap 5, 298256 ms
[01:28:57] bd: chap 6, 379420 ms
[01:28:57] bd: chap 7, 240031 ms
[01:28:57] bd: chap 8, 219761 ms
[01:28:57] bd: chap 9, 316649 ms
[01:28:57] bd: chap 10, 285076 ms
[01:28:57] bd: chap 11, 325366 ms
[01:28:57] bd: chap 12, 165582 ms
[01:28:57] bd: chap 13, 273815 ms
[01:28:57] bd: chap 14, 263930 ms
[01:28:57] bd: chap 15, 278361 ms
[01:28:57] bd: chap 16, 280363 ms
[01:28:57] bd: chap 17, 199240 ms
[01:28:57] bd: chap 18, 274649 ms
[01:28:57] bd: chap 19, 455413 ms
[01:28:57] bd: chap 20, 328119 ms
[01:28:57] bd: chap 21, 250 ms
[01:28:57] bd: title 26 has 21 chapters
[01:28:57] scan: decoding previews for title 26
[01:28:57] scan: title angle(s) 1
[01:28:57] scan: audio 0x711100: dca, rate=48000Hz, bitrate=1536000 English (DTS) (5.1 ch) (1536 kbps)
[01:28:57] scan: audio 0x1100: dca, rate=48000Hz, bitrate=1 English (DTS-HD MA) (5.1 ch)
[01:28:59] scan: 10 previews, 1920x1080, 23.976 fps, autocrop = 140/140/0/10, aspect 16:9, PAR 1:1
[01:28:59] scan: supported video decoders: avcodec qsv
[01:28:59] stream: 10 good frames, 0 errors (0%)
[01:28:59] libhb: scan thread found 1 valid title(s)
[01:28:59] Starting Task: Encoding Pass
[01:28:59] Skipping vfr filter
[01:28:59] Auto Passthru: allowed codecs are AAC, AC3, E-AC3, TrueHD, DTS, DTS-HD, MP3, FLAC
[01:28:59] Auto Passthru: fallback is None
[01:28:59] Auto Passthru: using DTS Passthru for track 1
[01:28:59] job configuration:
[01:28:59] * source
[01:28:59] + \\server\share\BEFORE_I_FALL.iso
[01:28:59] + title 26, chapter(s) 1 to 21
[01:28:59] * destination
[01:28:59] + C:\Users\user1\Videos\Before I Fall-21 software 10 bit base slow.mkv
[01:28:59] + container: Matroska (libavformat)
[01:28:59] + chapter markers
[01:28:59] * video track
[01:28:59] + decoder: h264
[01:28:59] + bitrate 200 kbps
[01:28:59] + filters
[01:28:59] + Crop and Scale (width=1920:height=800:crop-top=140:crop-bottom=140:crop-left=0:crop-right=0)
[01:28:59] + source: 1920 * 1080, crop (140/140/0/0): 1920 * 800, scale: 1920 * 800
[01:28:59] + Output geometry
[01:28:59] + storage dimensions: 1920 x 800
[01:28:59] + pixel aspect ratio: 1 : 1
[01:28:59] + display dimensions: 1920 x 800
[01:28:59] + encoder: H.265 10-bit (libx265)
[01:28:59] + preset: slow
[01:28:59] + profile: auto
[01:28:59] + level: auto
[01:28:59] + quality: 21.00 (RF)
[01:28:59] + color profile: 1-1-1
[01:28:59] * subtitle track 1, English [PGS] (track 0, id 0x1200, Picture) -> Passthrough
[01:28:59] * audio track 1
[01:28:59] + decoder: English (DTS) (5.1 ch) (1536 kbps) (track 1, id 0x711100)
[01:28:59] + bitrate: 1536 kbps, samplerate: 48000 Hz
[01:28:59] + DTS Passthru
src/libbluray/bdj/bdj.c:133: Error opening registry key SOFTWARE\JavaSoft\Java Runtime Environment\
src/libbluray/bdj/bdj.c:746: BD-J check: Failed to load JVM library
src/libbluray/bdj/bdj.c:133: Error opening registry key SOFTWARE\JavaSoft\Java Runtime Environment\
src/libbluray/bdj/bdj.c:746: BD-J check: Failed to load JVM library
[01:28:59] sync: expecting 142128 video frames
x265 [info]: HEVC encoder version 3.2.1+1-b5c86a64bbbe
x265 [info]: build info [Windows][GCC 8.3.0][64 bit] 10bit
x265 [info]: using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
x265 [info]: Main 10 profile, Level-4 (Main tier)
x265 [info]: Thread pool created using 8 threads
x265 [info]: Slices : 1
x265 [info]: frame threads / pool features : 3 / wpp(13 rows)
x265 [info]: Coding QT: max CU size, min CU size : 64 / 8
x265 [info]: Residual QT: max TU size, max depth : 32 / 1 inter / 1 intra
x265 [info]: ME / range / subpel / merge : star / 57 / 3 / 3
x265 [info]: Keyframe min / max / scenecut / bias: 24 / 240 / 40 / 5.00
x265 [info]: Lookahead / bframes / badapt : 25 / 4 / 2
x265 [info]: b-pyramid / weightp / weightb : 1 / 1 / 0
x265 [info]: References / ref-limit cu / depth : 4 / on / on
x265 [info]: AQ: mode / str / qg-size / cu-tree : 2 / 1.0 / 32 / 1
x265 [info]: Rate Control / qCompress : CRF-21.0 / 0.60
x265 [info]: tools: rect limit-modes rd=4 psy-rd=2.00 rdoq=2 psy-rdoq=1.00
x265 [info]: tools: rskip signhide tmvp strong-intra-smoothing lslices=4
x265 [info]: tools: deblock sao
[01:28:59] sync: first pts video is 0
[01:28:59] sync: "Chapter 1" (1) at frame 1 time 0
[01:28:59] sync: first pts audio 0x711100 is 0
[01:30:19] sync: first pts subtitle 0x1200 is 5758252
[01:36:11] sync: "Chapter 2" (2) at frame 7756 time 29110331
[01:45:10] sync: "Chapter 3" (3) at frame 14706 time 55198893
[01:51:19] sync: "Chapter 4" (4) at frame 20489 time 76906830
[02:05:05] sync: "Chapter 5" (5) at frame 32217 time 120930810
[02:11:52] sync: "Chapter 6" (6) at frame 39368 time 147773876
[02:21:26] sync: "Chapter 7" (7) at frame 48465 time 181921740
[02:26:08] sync: "Chapter 8" (8) at frame 54220 time 203524571
[02:31:53] sync: "Chapter 9" (9) at frame 59489 time 223303080
[02:36:49] sync: "Chapter 10" (10) at frame 67067 time 251748997
[02:42:53] sync: "Chapter 11" (11) at frame 73916 time 277458431
[02:49:39] sync: "Chapter 12" (12) at frame 81717 time 306741435
[02:53:34] sync: "Chapter 13" (13) at frame 85687 time 321643822
[02:57:51] sync: "Chapter 14" (14) at frame 92252 time 346287191
[03:03:34] sync: "Chapter 15" (15) at frame 98580 time 370040921
[03:08:14] sync: "Chapter 16" (16) at frame 105237 time 395029635
[03:13:51] sync: "Chapter 17" (17) at frame 111967 time 420292372
[03:17:41] sync: "Chapter 18" (18) at frame 116753 time 438257820
[03:24:26] sync: "Chapter 19" (19) at frame 123338 time 462976263
[03:35:19] sync: "Chapter 20" (20) at frame 134234 time 503877123
[03:38:12] bd: End of title
[03:38:12] reader: done. 1 scr changes
[03:38:14] work: average encoding speed for job is 18.323442 fps
[03:38:14] stream: 142129 good frames, 0 errors (0%)
[03:38:14] dca-decoder done: 555747 frames, 0 decoder errors
[03:38:14] h264-decoder done: 142129 frames, 0 decoder errors
[03:38:14] sync: got 142129 frames, 142128 expected
[03:38:14] sync: framerate min 23.976 fps, max 23.976 fps, avg 23.976 fps
x265 [info]: frame I: 1152, Avg QP:19.80 kb/s: 8001.75
x265 [info]: frame P: 31440, Avg QP:21.36 kb/s: 2584.82
x265 [info]: frame B: 109537, Avg QP:26.60 kb/s: 409.30
x265 [info]: Weighted P-Frames: Y:4.7% UV:3.1%
x265 [info]: consecutive B-frames: 5.9% 2.5% 6.5% 19.6% 65.4%
encoded 142129 frames in 7755.40s (18.33 fps), 952.08 kb/s, Avg QP:25.38
[03:38:14] mux: track 0, 142129 frames, 706059039 bytes, 952.85 kbps, fifo 2048
[03:38:14] mux: track 1, 555747 frames, 1118162964 bytes, 1508.99 kbps, fifo 8192
[03:38:14] mux: track 2, 2793 frames, 28443639 bytes, 38.39 kbps, fifo 64
[03:38:14] Finished work at: Fri Dec 20 03:38:14 2019
[03:38:14] libhb: work result = 0
# Encode Completed ...
# Performing 'When Done' Action: 2
