[FFmpeg-trac] gain the highest quality with H264 at a certain bit rate

Mon Mar 27 15:20:08 EEST 2017

I have encoded my videos using ffmpeg and H264, and this is my ffmpeg
command (2 pass encoding):

ffmpeg -y -i Edited\ Clips/arsenalVScristalPalas.mp4 -movflags
faststart -c:v libx264 -x264opts
'keyint=300:min-keyint=25:8x8dct:sliced-threads=0:subq=6' -deblock 0:0
-flags +loop -preset slow -tune zerolatency -b:v 2048k -maxrate 2048k
-bufsize 3000k -vf "scale=-1280:720" -pass 1 -acodec libmp3lame -b:a
128k -coder 1 -me_range 16 -sc_threshold 42 -bf 10 -qmin 0 -qmax 51
-trellis 2 -rc_lookahead 60 -ss 00:01:00 -t 00:01:00 -f mp4 /dev/null

ffmpeg -i Edited\ Clips/arsenalVScristalPalas.mp4 -movflags faststart
-c:v libx264 -x264opts
'keyint=300:min-keyint=25:8x8dct:sliced-threads=0:subq=6' -deblock 0:0
-flags +loop -preset slow -tune zerolatency -b:v 2048k -maxrate 2048k
-bufsize 3000k -vf "scale=-1280:720" -pass 2 -acodec libmp3lame -b:a
128k -coder 1 -me_range 16 -sc_threshold 42 -bf 10 -qmin 0 -qmax 51
-trellis 2 -rc_lookahead 60 -ss 00:01:00 -t 00:01:00  2pass15.mp4

I need the video to be in the highest quality (at the 2000kbps bitrate). I
have another video with the same bitrate (from another source), but It has
a better quality than my video. I need to reach that quality.

I used mediainfo to get the encoding options for that video, and here is
the information:

General Complete name : arsenalVScristalPalas_hd.mp4 Format
: MPEG-4 Format profile : Base Media Codec ID : isom (isom/iso2/avc1/mp41)
File size : 171 MiB Duration
: 11mn 1s Overall bit rate : 2 164 Kbps Encoded date : UTC 1904-01-01
00:00:00 Tagged date : UTC 1904-01-01 00:00:00 Writing application :
Lavf57.63.100

Video ID : 1 Format
: AVC Format/Info : Advanced Video Codec Format profile : Main at L3.1 Format
settings, CABAC : Yes Format settings, ReFrames
: 6 frames Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration
: 11mn 1s Bit rate : 2 048 Kbps Width : 1 280 pixels Height : 720 pixels
Display aspect ratio : 16:9 Frame rate mode
: Constant Frame rate : 50.000 fps Color space : YUV Chroma subsampling
: 4:2:0 Bit depth : 8 bits Scan type
: Progressive Bits/(Pixel*Frame) : 0.044 Stream size : 160 MiB (94%)
Writing library
: x264 core 148 r2643 5c65704 Encoding settings
: cabac=1 / ref=6 / deblock=1:1:1 / analyse=0x1:0x131 / me=umh / subme=9 /
psy=1 / psy_rd=0.40:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 /
trellis=2 / 8x8dct=0 / cqm=0 / deadzone=21,11 / fast_pskip=1 /
chroma_qp_offset=-2 / threads=22 / lookahead_threads=5 / sliced_threads=0 /
nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 /
bframes=10 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 /
open_gop=0 / weightp=2 / keyint=300 / keyint_min=25 / scenecut=40 /
intra_refresh=0 / rc_lookahead=60 / rc=2pass / mbtree=1 / bitrate=2048 /
ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / cplxblur=20.0 /
qblur=0.5 / vbv_maxrate=2048 / vbv_bufsize=5000 / nal_hrd=none / filler=0 /
ip_ratio=1.41 / aq=1:0.60 Language : English Encoded date : UTC 1904-01-01
00:00:00 Tagged date : UTC 1904-01-01 00:00:00

Audio ID : 2 Format
: AAC Format/Info : Advanced Audio Codec Format profile : HE-AAC / LC Codec
ID
: 40 Duration : 11mn 1s Duration_LastFrame : -23ms Bit rate mode
: Constant Bit rate : 128 Kbps Channel(s) : 2 channels Channel positions :
Front: L R Sampling rate
: 48.0 KHz / 24.0 KHz Frame rate : 23.438 fps (1024 spf) Compression mode :
Lossy Stream size : 10.1 MiB (6%) Language
: English Default : Yes Alternate group : 1 Encoded date
: UTC 1904-01-01 00:00:00 Tagged date : UTC 1904-01-01 00:00:00

and this is the information of my video:

General Complete name : 2pass14.mp4 Format : MPEG-4 Format profile : Base
Media Codec ID : isom (isom/iso2/avc1/mp41) File size : 15.4 MiB Duration
: 1mn 0s Overall bit rate : 2 150 Kbps Encoded date : UTC 1904-01-01
00:00:00 Tagged date : UTC 1904-01-01 00:00:00 Writing application :
Lavf56.40.101

Video ID : 1 Format
: AVC Format/Info : Advanced Video Codec Format profile : High at L3.2 Format
settings, CABAC : Yes Format settings, ReFrames
: 5 frames Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration
: 1mn 0s Bit rate : 2 048 Kbps Width
: 1 280 pixels Height : 720 pixels Display aspect ratio : 16:9 Frame rate
mode
: Constant Frame rate : 50.000 fps Color space : YUV Chroma subsampling
: 4:2:0 Bit depth : 8 bits Scan type
: Progressive Bits/(Pixel*Frame) : 0.044 Stream size : 14.4 MiB (94%)
Writing library
: x264 core 148 r2643 5c65704 Encoding settings
: cabac=1 / ref=5 / deblock=1:3:3 / analyse=0x3:0x113 / me=umh / subme=6 /
psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 /
trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 /
chroma_qp_offset=-2 / threads=6 / lookahead_threads=3 / sliced_threads=0 /
nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 /
bframes=10 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 /
open_gop=0 / weightp=2 / keyint=300 / keyint_min=25 / scenecut=42 /
intra_refresh=0 / rc_lookahead=0 / rc=2pass / mbtree=0 / bitrate=2048 /
ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 /
qblur=0.5 / vbv_maxrate=2048 / vbv_bufsize=3000 / nal_hrd=none / filler=0 /
ip_ratio=1.40 / pb_ratio=1.30 / aq=1:1.00 Language
: English Encoded date : UTC 1904-01-01 00:00:00 Tagged date : UTC
1904-01-01 00:00:00

Audio ID : 2 Format
: MPEG Audio Format version : Version 1 Format profile : Layer 3 Mode
: Joint stereo Mode extension : MS Stereo Codec ID : 6B Duration
: 1mn 0s Duration_LastFrame : -1ms Bit rate mode : Constant Bit rate : 128
Kbps Maximum bit rate : 2 048 Kbps Channel(s)
: 2 channels Sampling rate : 48.0 KHz Compression mode : Lossy Stream size
: 938 KiB (6%) Language : English Default : Yes Alternate group
: 1 Encoded date : UTC 1904-01-01 00:00:00 Tagged date : UTC 1904-01-01
00:00:00

is there anything that I am doing wrong?? any suggestions on how to improve
my output quality??

and here is a demo of videos,

the video that has a better quality:

https://ufile.io/b7a1b

my video, that I need to improve quality:

https://ufile.io/363f11
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