constant frame rate miscalculation on video import to VSE #53535

Closed
opened 2017-12-11 01:40:06 +01:00 by Mikeycal Meyers · 6 comments

System Information
Windows 10 v.1709 (OS Build 16299.19)
Nvidia GTX 1060 (6GB)
Intel i5 3570K
16GB RAM

Blender Version
Broken: (2.79)
Worked: (2.78c)

Short description of error
Blender's ability to calculate a video's FPS on import seems to have degraded in blender 2.79. I have a constant 24 fps video that was animated out by blender and is 5789 (video frames) and 5788 (audio frames). When I import it into blender VSE, through drag and drop or "Add-> Movie" menu, blender 2.79 will detect that the video has a "Custom (-0.02 fps)." The the video strip imports and shows that it is a correct 5788 frames but the audio strip is -4 frames. Blender 2.78c does not have this same issue. It auto detects the frame rate from the same imported video correctly.

The video I am importing was animated out by blender using the following encoding settings:

Video Resolution: 1920 x 1080
Color Mode: RGB
Container: MPEG-4
Output Quality: High Quality
Encoding Speed : Medium Speed
FPS: 24 fps
keyframe interval: 12
Max B-frames: Unchecked
Audio Codec: AAC
Bitrate: 320

Work around:
If you manually set the correct fps, it will display the strips correctly in the Video Sequencer. It seems that this is just a glitch with the FPS autodetection.

**System Information** Windows 10 v.1709 (OS Build 16299.19) Nvidia GTX 1060 (6GB) Intel i5 3570K 16GB RAM **Blender Version** Broken: (2.79) Worked: (2.78c) **Short description of error** Blender's ability to calculate a video's FPS on import seems to have degraded in blender 2.79. I have a constant 24 fps video that was animated out by blender and is 5789 (video frames) and 5788 (audio frames). When I import it into blender VSE, through drag and drop or "Add-> Movie" menu, blender 2.79 will detect that the video has a "Custom (-0.02 fps)." The the video strip imports and shows that it is a correct 5788 frames but the audio strip is -4 frames. Blender 2.78c does not have this same issue. It auto detects the frame rate from the same imported video correctly. The video I am importing was animated out by blender using the following encoding settings: Video Resolution: 1920 x 1080 Color Mode: RGB Container: MPEG-4 Output Quality: High Quality Encoding Speed : Medium Speed FPS: 24 fps keyframe interval: 12 Max B-frames: Unchecked Audio Codec: AAC Bitrate: 320 **Work around:** If you manually set the correct fps, it will display the strips correctly in the Video Sequencer. It seems that this is just a glitch with the FPS autodetection.

Added subscriber: @mikeycal

Added subscriber: @mikeycal

Added subscriber: @Sergey

Added subscriber: @Sergey

Please always attach files which demonstrates the issue.

Please always attach files which demonstrates the issue.

Added subscriber: @fablefox

Added subscriber: @fablefox

Changed status from 'Open' to: 'Archived'

Changed status from 'Open' to: 'Archived'
Fable Fox self-assigned this 2017-12-18 12:39:33 +01:00

Since last asking for information it has been 7 or more days, due to the policy of our bug tracker we will have to archive the report until the requested information is given.

Since last asking for information it has been 7 or more days, due to the policy of our bug tracker we will have to archive the report until the requested information is given.
Sign in to join this conversation.
No Label
Interest
Alembic
Interest
Animation & Rigging
Interest
Asset Browser
Interest
Asset Browser Project Overview
Interest
Audio
Interest
Automated Testing
Interest
Blender Asset Bundle
Interest
BlendFile
Interest
Collada
Interest
Compatibility
Interest
Compositing
Interest
Core
Interest
Cycles
Interest
Dependency Graph
Interest
Development Management
Interest
EEVEE
Interest
EEVEE & Viewport
Interest
Freestyle
Interest
Geometry Nodes
Interest
Grease Pencil
Interest
ID Management
Interest
Images & Movies
Interest
Import Export
Interest
Line Art
Interest
Masking
Interest
Metal
Interest
Modeling
Interest
Modifiers
Interest
Motion Tracking
Interest
Nodes & Physics
Interest
OpenGL
Interest
Overlay
Interest
Overrides
Interest
Performance
Interest
Physics
Interest
Pipeline, Assets & IO
Interest
Platforms, Builds & Tests
Interest
Python API
Interest
Render & Cycles
Interest
Render Pipeline
Interest
Sculpt, Paint & Texture
Interest
Text Editor
Interest
Translations
Interest
Triaging
Interest
Undo
Interest
USD
Interest
User Interface
Interest
UV Editing
Interest
VFX & Video
Interest
Video Sequencer
Interest
Virtual Reality
Interest
Vulkan
Interest
Wayland
Interest
Workbench
Interest: X11
Legacy
Blender 2.8 Project
Legacy
Milestone 1: Basic, Local Asset Browser
Legacy
OpenGL Error
Meta
Good First Issue
Meta
Papercut
Meta
Retrospective
Meta
Security
Module
Animation & Rigging
Module
Core
Module
Development Management
Module
EEVEE & Viewport
Module
Grease Pencil
Module
Modeling
Module
Nodes & Physics
Module
Pipeline, Assets & IO
Module
Platforms, Builds & Tests
Module
Python API
Module
Render & Cycles
Module
Sculpt, Paint & Texture
Module
Triaging
Module
User Interface
Module
VFX & Video
Platform
FreeBSD
Platform
Linux
Platform
macOS
Platform
Windows
Priority
High
Priority
Low
Priority
Normal
Priority
Unbreak Now!
Status
Archived
Status
Confirmed
Status
Duplicate
Status
Needs Info from Developers
Status
Needs Information from User
Status
Needs Triage
Status
Resolved
Type
Bug
Type
Design
Type
Known Issue
Type
Patch
Type
Report
Type
To Do
No Milestone
No project
No Assignees
3 Participants
Notifications
Due Date
The due date is invalid or out of range. Please use the format 'yyyy-mm-dd'.

No due date set.

Dependencies

No dependencies set.

Reference: blender/blender#53535
No description provided.