PNG Sequence resulting in garbled image.

Open
#46 12 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
25/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
cpp

Research direction

No source file, test, or entry point is named. Start by reproducing ingestion of the 5120 × 5120 stereo PNG sequence on Ubuntu and compare the transform process with the working JPG or H.264/H.265 inputs; done means the uncompressed PNG output is no longer garbled without introducing a prior lossy conversion.

Written by the indexing model from the issue text.

Description

out

I'm having trouble ingesting any sort of uncompressed inage or video format. I'm not sure if this is an ubuntu / ffmpeg issue or if it resides with the transform process.

Attached is an image showing result of ingesting a PNG 5120 x 5120 360 TB stereo image.

It works fine if we first convert the sequence to JPG or convert the uncompressed QT to H265/H264 before ingesting, but then we are introducing encoding artifacts before running it through this transform process.

Any assistance appreciated.

Dominant language
C++
Stars
1k
Forks
242
PR merge metrics
No merged PRs in 30d

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

More from facebook/transform360

All issues in facebook/transform360

Similar issues

More C++ issues

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.