758b outputs wrong bitrate

Pete99

New member
V 758b is not following the selected profile bitrate, profile says 6363, logfile says 'Graph, Output encoding bitrate: 6.3628 Mbps', actual output is 2.951Mbps, V748 works OK on the same original video file and outputs the desired bitrate / filesize.
 

Dan203

Senior Developer
Staff member
Is this a force recode profile? Or an intelligent profile? What codec is the source? What codec is the output?
 

Pete99

New member
759 Still not recoding to the required bitrate / size

Original
File: Name : C:\Users\Peter\Desktop\Video Temp\New_ NCIS_ New Orleans_20171118_2320.ts
Size : 2.415 GB
Duration : 00:59:55.02
Mux type : M2TS Stream
TS mux rate : 5.112 Mbps
Video: Encoding : H.264
VideoStreamID : x1901
Frame rate : 25.00 fps
Encoding size : 1920 x 1080
Aspect ratio : 16:9
Header bit rate : 25.000 Mbps
VBV buffer : 572 KBytes
Profile : High/4.0
Progressive : Progressive
Chroma : 4:2:0
Entropy mode : CABAC
Bit rate : 5.159 Mbps
Audio Stream: 1 (Primary) Codec : AAC
Format : LATM/LOAS
Channels : 2.0
Language : eng
PID : x1902
PES Stream Id : xC1
Sampling rate : 48000
Audio Stream: 2 Codec : AAC-HE
Format : LATM/LOAS
Channels : 1.0
Language : eng
PID : x1906
PES Stream Id : xC1
Sampling rate : 48000 / 24000
Subtitle: 1-1 Type : DVB Subpic
PID : 0x1905
Language : eng
Page : 1

Recoded output
File: Name : C:\Users\Peter\Desktop\test\New_ NCIS_ New Orleans_20171118_2320.mpg
Size : 0.999 GB
Duration : 00:40:41.13
Mux type : PS - MPEG2
Video: Encoding : MPEG2
VideoStreamID : xE0
Frame rate : 25.00 fps
Encoding size : 720 x 576
Display dimensions : 720 x 576
Aspect ratio : 16:9
Header bit rate : 9.618 Mbps
VBV buffer : 224 KBytes
Profile : Main@Main
Progressive : Progressive Only
Chroma : 4:2:0
Bit rate : 2.898 Mbps
Field order : Progressive
Audio Stream: 1 (Primary) Codec : MPEG
MPEGLayer : Layer 2
Channels : 2.0
PES Stream Id : xC0
Bit rate : 256 Kbps
Sampling rate : 48000
Sample size : 16 bits

Required size set to 2000Kbps calculated as 6412 Avg bitrate - 9618 Max

Same parameters same file recoded by 748

File: Name : C:\Users\Peter\Desktop\test\001_ NCIS_ New Orleans_20171118_2320.mpg
Size : 2.047 GB
Duration : 00:40:41.12
Mux type : PS - MPEG2
Video: Encoding : MPEG2
VideoStreamID : xE0
Frame rate : 25.00 fps
Encoding size : 720 x 576
Aspect ratio : 16:9
Header bit rate : 9.618 Mbps
VBV buffer : 224 KBytes
Profile : Main@Main
Progressive : Prog or Int
Chroma : 4:2:0
Bit rate : 6.194 Mbps
Field order : Progressive
Audio Stream: 1 (Primary) Codec : MPEG
MPEGLayer : Layer 2
Channels : 2.0
PES Stream Id : xC0
Bit rate : 256 Kbps
Sampling rate : 48000
Sample size : 16 bits
 
Last edited by a moderator:

Danr

Administrator
Staff member
Did you try 759, that was a known and addressed issue from 758?

PS. Please don't post log files as as text, either upload them to the message board or even better email them as an attachment to support.
 

Pete99

New member
Yes I did, Post 3 is the outputs from both 759 and 758, 759 is the first set of output stats, 758 is the second, same file, same profile / parameters.
 
Last edited by a moderator:

Danr

Administrator
Staff member
Last edited:

Pete99

New member
Sorry I meant to write required size of 2000Mb, I'm using dual pass, the 'classic' encoder outputs the requested size / bitrate, the default encoder doesn't, I've uploaded a trim and copy of the original file and sent the email.
 
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