Opened 4 years ago

Last modified 4 years ago

#9942 new defect

Non-asm code produces artifacts when encoding XDCAM

Reported by: Konstantin Melikhov Owned by:
Priority: important Component: avcodec
Version: git-master Keywords: mpeg2video regression
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no

Description

Summary of the bug:

When build with "--disable-asm" mpeg2 encoding produces artifacts for specific settings

How to reproduce:

% ffmpeg -i input.mov -vcodec mpeg2video -r 30 -pix_fmt yuv422p -non_linear_quant 1 -dc 2 -intra_vlc 1 -qmin 1 -lmin "1*QP2LAMBDA" -qmax 12 -b:v 50000000  -minrate 50000000 -maxrate 50000000 -minrate 50000000 -bufsize 17825792 -bf 2 output.mov

Any version

Apple Silicon build, or Apple x86 build with --disable-asm

Attachments (2)

input.mov​ (1.2 MB ) - added by Konstantin Melikhov 4 years ago.
Input file
output.mov​ (2.3 MB ) - added by Konstantin Melikhov 4 years ago.
Output with artifacts

Change History (5)

by Konstantin Melikhov, 4 years ago

Attachment: input.mov​ added

Input file

by Konstantin Melikhov, 4 years ago

Attachment: output.mov​ added

Output with artifacts

comment:1 by Konstantin Melikhov, 4 years ago

Priority: normal → important

comment:2 by Carl Eugen Hoyos, 4 years ago

Keywords: mpeg2video regression added

Regression since 58fe57d5a05ad8d15c320b2bd163debbc412bdd3

comment:3 by Carl Eugen Hoyos, 4 years ago

Version: unspecified → git-master
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