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OpenHEVC / openHEVC

HEVC decoder
http://openhevc.github.io/openHEVC/
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SHVC decoder mismatch #51

Closed shhhhh79 closed 7 years ago

shhhhh79 commented 8 years ago

Hello, I'm testing the SHVC decoder on Linux.

With the latest code from hevc_rext branch, I get decoder mismatches for enh. layer frames. Base layer is decoded fine(-l 0), but all enh. layer frames look broken(-l 1). Tested shvc bitstreams were encoded with SHM4.1.

I verified that the w64 executable(openHEVC/bin/shvc/ffmpeg_w64/hevc_ffmpeg_w64.exe) has no problem with the same bitstreams on Windows.

Thank you!

pcabarat commented 8 years ago

Hi! If you're interested in SHVC, you should have a look to HEVC_extensions branch. It should support 6.1 and higher SHM versions.

I don't know if it will support SHM-4.1 streams because of some changes made in the VPS. If you're interested in 4.1 stream only, you might see an error (about VPS reserved 16 bits if I remember well) before resuming. In hevc_ps.c comment the error return located right after the error report. The rest should work fine with a few warnings.

Based on what you said the SHVC support might be broken for some streams in hevc_rext. The reason it works fine on windows, might be the w64 dll does not correspond to the hevc_rext branch build but an equivalent on our FFmpeg repo.

Pierre-Loup

shhhhh79 commented 7 years ago

Hi. I've been testing the code from HEVC_extensions branch and it is working fine with SHM 10 bitstreams.

Thanks :)