Hi,
I ran into a problem when trying to record locally in 1080p@60 with x264.
I find quality 10 (crf 22) very inadequate for high quality local recording, so I'd like to increase the quality beyond the OBS recommendation.
When I enable Custom x264 settings and use crf="18" in the Custom x264 settings field, the encoder seems to ignore all the settings I've set and produces files with the following mediainfo:
The bitrate while encoding jumps up to crazy numbers in the range of 150 000 - 300 000 kb/s and as can be seen from the mediainfo, the format profile changes from High@L5 to High 4:4:4 Predictive@L4.2.
This, however, is what I'd normally expect (but with crf 18):
Anyone have a clue why this happens?
I ran into a problem when trying to record locally in 1080p@60 with x264.
I find quality 10 (crf 22) very inadequate for high quality local recording, so I'd like to increase the quality beyond the OBS recommendation.
When I enable Custom x264 settings and use crf="18" in the Custom x264 settings field, the encoder seems to ignore all the settings I've set and produces files with the following mediainfo:
Code:
General
Complete name : P:\replay buffer\Replay-2015-06-14-2221-50.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 1 013 MiB
Duration : 22s 37ms
Overall bit rate : 386 Mbps
Encoded date : UTC 2015-06-14 19:21:51
Tagged date : UTC 2015-06-14 19:21:51
Writing application : Open Broadcaster Software v0.651b
Video
ID : 2
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High 4:4:4 Predictive@L4.2
Format settings, CABAC : No
Format settings, ReFrames : 1 frame
Muxing mode : Container profile=High@3.1
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 22s 32ms
Source duration : 22s 16ms
Bit rate : 386 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 60.000 fps
Minimum frame rate : 58.824 fps
Maximum frame rate : 62.500 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 3.101
Stream size : 1 013 MiB (100%)
Source stream size : 1 013 MiB (100%)
Writing library : x264 core 146 r2538 121396c
Encoding settings : cabac=0 / ref=1 / deblock=0:0:0 / analyse=0:0 / me=dia / subme=0 / psy=0 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=0 / 8x8dct=0 / cqm=0 / deadzone=21,11 / fast_pskip=0 / chroma_qp_offset=0 / threads=12 / lookahead_threads=2 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=0 / weightp=0 / keyint=250 / keyint_min=25 / scenecut=0 / intra_refresh=0 / rc=cqp / mbtree=0 / qp=0
Encoded date : UTC 2015-06-14 19:21:51
Tagged date : UTC 2015-06-14 19:21:51
Color range : Limited
Color primaries : BT.709
Transfer characteristics : sYCC
Matrix coefficients : BT.709
mdhd_Duration : 22032
Audio
ID : 1
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 22s 37ms
Source duration : 22s 16ms
Bit rate mode : Constant
Bit rate : 3 375 bps
Nominal bit rate : 192 Kbps
Channel(s) : channel0
Channel(s)_Original : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 9.08 KiB (0%)
Source stream size : 9.08 KiB (0%)
Language : English
Encoded date : UTC 2015-06-14 19:21:51
Tagged date : UTC 2015-06-14 19:21:51The bitrate while encoding jumps up to crazy numbers in the range of 150 000 - 300 000 kb/s and as can be seen from the mediainfo, the format profile changes from High@L5 to High 4:4:4 Predictive@L4.2.
This, however, is what I'd normally expect (but with crf 18):
Code:
General
Complete name : P:\replay buffer\Replay-2015-06-14-2156-11.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 55.3 MiB
Duration : 1mn 4s
Overall bit rate : 7 137 Kbps
Encoded date : UTC 2015-06-14 18:56:11
Tagged date : UTC 2015-06-14 18:56:11
Writing application : Open Broadcaster Software v0.651b
Video
ID : 2
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L5
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Muxing mode : Container profile=High@3.1
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 1mn 4s
Bit rate : 7 119 Kbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 60.000 fps
Minimum frame rate : 58.824 fps
Maximum frame rate : 62.500 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.057
Stream size : 55.1 MiB (100%)
Writing library : x264 core 146 r2538 121396c
Encoding settings : cabac=1 / ref=1 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=2 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=0 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=0 / threads=12 / lookahead_threads=4 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=1 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=10 / rc=crf / mbtree=1 / crf=22.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / vbv_maxrate=100000 / vbv_bufsize=100000 / crf_max=0.0 / nal_hrd=none / filler=0 / ip_ratio=1.40 / aq=1:1.00
Encoded date : UTC 2015-06-14 18:56:11
Tagged date : UTC 2015-06-14 18:56:11
Color range : Full
Color primaries : BT.709
Transfer characteristics : sYCC
Matrix coefficients : BT.709
mdhd_Duration : 64966
Audio
ID : 1
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 1mn 4s
Source duration : 1mn 4s
Bit rate mode : Constant
Nominal bit rate : 192 Kbps
Channel(s) : channel0
Channel(s)_Original : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Source stream size : 26.8 KiB (0%)
Language : English
Encoded date : UTC 2015-06-14 18:56:11
Tagged date : UTC 2015-06-14 18:56:11Anyone have a clue why this happens?