Skip to main content
S
StefanG.
Known Participant
March 12, 2019
Answered

Bitrate settings ignored

  • March 12, 2019
  • 1 reply
  • 4657 views

Hello,

I am trying to encode lowres samples and set the bitrate to 0.4 mbit/s

AME ignores it and uses about 1.3 mbit/s instead.

Anyone know what's up with that?

Thx!

Correct answer Jeff Bugbee

it's not just this file (and while all my files are HD, the formats and frame rates differ) - but here's the media info on one of them:

General

ID                             : 0 (0x0)

Format                         : BDAV

Format/Info                    : Blu-ray Video

File size                      : 1.33 GiB

Duration                       : 7 min 8 s

Overall bit rate mode          : Variable

Overall bit rate               : 26.5 Mb/s

Maximum Overall bit rate       : 28.0 Mb/s

Video

ID                             : 4113 (0x1011)

Menu ID                        : 1 (0x1)

Format                         : AVC

Format/Info                    : Advanced Video Codec

Format profile                 : High@L4.2

Format settings, CABAC         : Yes

Format settings, RefFrames     : 2 frames

Format settings, GOP           : M=1, N=15

Codec ID                       : 27

Duration                       : 7 min 8 s

Bit rate mode                  : Variable

Bit rate                       : 25.2 Mb/s

Maximum bit rate               : 26.0 Mb/s

Width                          : 1 920 pixels

Height                         : 1 080 pixels

Display aspect ratio           : 16:9

Frame rate                     : 59.940 (60000/1001) FPS

Color space                    : YUV

Chroma subsampling             : 4:2:0

Bit depth                      : 8 bits

Scan type                      : Progressive

Bits/(Pixel*Frame)             : 0.203

Stream size                    : 1.26 GiB (95%)

Audio

ID                             : 4352 (0x1100)

Menu ID                        : 1 (0x1)

Format                         : AC-3

Format/Info                    : Audio Coding 3

Format settings, Endianness    : Big

Codec ID                       : 129

Duration                       : 7 min 8 s

Bit rate mode                  : Constant

Bit rate                       : 256 kb/s

Channel(s)                     : 2 channels

Channel positions              : Front: L R

Sampling rate                  : 48.0 kHz

Frame rate                     : 31.250 FPS (1536 SPF)

Bit depth                      : 16 bits

Compression mode               : Lossy

Stream size                    : 13.1 MiB (1%)

Service kind                   : Complete Main

Text

ID                             : 4608 (0x1200)

Menu ID                        : 1 (0x1)

Format                         : PGS

Codec ID                       : 144

Duration                       : 7 min 8 s


Can you try these encoding settings?

1 reply

S
StefanG.Author
Known Participant
March 12, 2019

how? why? what kind of wizardry is that?

Jeff Bugbee
Jeff Bugbee
Adobe Expert
March 13, 2019

From my experience, it seems there is a minimum bitrate AME can render to and it is dependent on the source video. Some files may let you export at .4mpbs, but some may come out higher. Instead of errorring out, AME exports it as low as the file allows which may be higher than the bitrate you chose.

S
StefanG.Author
Known Participant
March 13, 2019

I used to (and still do) use Carbon Coder, I have no issue there to set the bitrate to 400kbit for the same source files.

So if AME "decides" my files should have a higher bitrate than I want, it is definitely a bug.

It's a pity, i wanted to use AME to replace Carbon Coder because that one is not being updated anymore (and Sorenson is no alternative either cause it can't work with file shortcuts) but I run into so many issues with AME...

Which should be embarassing for Adobe considering the size of the company and the money they make.

Not mentioning the fact that as a paying customer you get completely ignored here.

Terms & ConditionsAccessibility statement
Using the community Terms of use Privacy Cookie preferences Do not sell or share my personal information ad choicesAdChoices