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Bug 793783 - [gstreamer-msdk-master][SKL] The md5 value of some cases mpeg2 decoding do not match reference.
[gstreamer-msdk-master][SKL] The md5 value of some cases mpeg2 decoding do no...
Status: RESOLVED INVALID
Product: GStreamer
Classification: Platform
Component: gst-plugins-bad
git master
Other Linux
: Normal normal
: git master
Assigned To: GStreamer Maintainers
GStreamer Maintainers
Depends on:
Blocks:
 
 
Reported: 2018-02-24 07:58 UTC by zj,wang
Modified: 2018-02-27 03:15 UTC
See Also:
GNOME target: ---
GNOME version: ---


Description zj,wang 2018-02-24 07:58:56 UTC 
Test Env:
============================================
Platform:               SKL
Arch:          		x86_64
CentOS Linux release    7.3.1611 (Core)
Kernel:			4.4.0 
libva			MediaServerStudioEssentials2017R3.tar.gz (libva 
                        1.67.0.pre1)
media_driver		MediaServerStudioEssentials2017R3.tar.gz 16.5.2.64009-
                        ubit
gstreamer               master branch 91798e16cc09420163684d13779f13f374164ea2
gst-bad 		master branch 1c81bf4bdc67b518d6b3bbc22398c17fe8ced1da


Reproduce Steps:
============================================
take one case for example
1. build enc as above lists
2. gst-launch-1.0 -q filesrc location=/media/yami_mpeg2/toshiba_DPall-0.mpg.mpeg2 '!' mpegvideoparse '!' msdkmpeg2dec '!' videoconvert '!' video/x-raw,format=I420 '!' checksumsink2 frame-checksum=FALSE file-checksum=TRUE plane-checksum=FALSE
3. real_md5=f086b17215c56f99fcd669a0eeeb9850
4. ref_md5=0dec07946f0773bf504074035efb1e69
Comment 1 Fei 2018-02-24 08:49:19 UTC 
@zj.wang, there will be float calculator in mpeg2 decode, the md5 may not the same with reference md5. Please use ssim to test it. Just like vc1 decode. Thanks.
Comment 2 zj,wang 2018-02-27 03:15:43 UTC 
Due to float calculator in mpeg2 decode, use ssim as standard and reopen two issues for mpeg2 decoding, please refer to https://bugzilla.gnome.org/show_bug.cgi?id=793864
https://bugzilla.gnome.org/show_bug.cgi?id=793867
so close this issue