Opened 5 years ago
Closed 5 years ago
#8069 closed defect (fixed)
FFmpeg vp8 decoder produces decoded contents with color artfiacts
| Reported by: | Hirokazu Honda | Owned by: | |
|---|---|---|---|
| Priority: | important | Component: | avcodec |
| Version: | git-master | Keywords: | vp8 regression |
| Cc: | hiroh@chromium.org | Blocked By: | |
| Blocking: | Reproduced by developer: | yes | |
| Analyzed by developer: | no |
Description
I find the decoded result by ffmpeg vp8 decoder is different from vpxdec.
The video frames decoded by ffmpeg has color artifacts, whereas ones decoded by vpxdec doesn't.
There seems to be issues in ffmpeg vp8 decoder.
I will attach one video file to be reproduced, and md5 results of both ffmpeg and vpxdec.
Attachments (3)
Change History (10)
by , 5 years ago
| Attachment: | ffmpeg.frames.md5 added |
|---|
by , 5 years ago
| Attachment: | vpxdec.frames.md5 added |
|---|
md5 result of vpxdec got by vpxdec simple_dump.webm --md5 -o output_w%w_h%h_%2.frame --i420 >vpxdec.frames.md5
comment:1 by , 5 years ago
The video file is available in this link
I cannot have uploaded here as it is larger than the file size limitation (2.5MB).
The video file size is 12.0 MB.
follow-up: 4 comment:2 by , 5 years ago
| Component: | ffmpeg → avcodec |
|---|---|
| Keywords: | regression added |
| Priority: | normal → important |
| Reproduced by developer: | set |
Regression since 1afd246960202917e244c844c534e9c1e3c323f5
by , 5 years ago
| Attachment: | simple_dump_cut.webm added |
|---|
comment:3 by , 5 years ago
Is there any update about this issue?
This seems an important issue as ffmpeg vp8 decoder produces a different video frame from libvpx vp8 decoder.
follow-up: 5 comment:4 by , 5 years ago
Replying to cehoyos:
Regression since 1afd246960202917e244c844c534e9c1e3c323f5
Will fix the regression but the md5 does not match libvpx before this commit either
comment:5 by , 5 years ago
Replying to michael:
Replying to cehoyos:
Regression since 1afd246960202917e244c844c534e9c1e3c323f5
Will fix the regression but the md5 does not match libvpx before this commit either
That is an imo unrelated change since 9f6d48d696d679de77e8cb513d5f64cd708ed86f, that commit was related to tickets #4119 and #1578.
comment:6 by , 5 years ago
| Cc: | added |
|---|
comment:7 by , 5 years ago
| Resolution: | → fixed |
|---|---|
| Status: | new → closed |
Fixed by Michael in b6b9ac5698c8f911841b469af77199153278c55c
md5 result of ffmpeg got by
ffmpeg -i simple_dump.webm -f framemd5 ffmpeg.frames.md5