rawvideo: y4m with odd width have broken chroma

Decoding a 175x144 video reveals that there may be an issue with e.g. chroma stride.

Reproduced with VLC version 2.2.8 Weatherwax (2.2.1-917-g57f930321f) and latest git HEAD.

added Component::Decoders Severity::normal Type::bug Version::master git + 1 deleted label

changed milestone to %Bugs paradize

snapshot from a 175x144 y4m

Added attachment:

• vlcsnap-2018-04-17-01h12m17s853.png

changed title from rawvideo: videos with odd width have broken chroma to rawvideo: y4m with odd width have broken chroma

Do you have the source sample ? I'm looking at the copy code and seeing a lot of issues.

Replying to [comment:3 Steve Lhomme]:

Do you have the source sample ? I'm looking at the copy code and seeing a lot of issues.

https://people.videolan.org/~tmatth/odd-width.y4m

I've also added 2 others for comparison: https://people.videolan.org/~tmatth/odd-height.y4m https://people.videolan.org/~tmatth/odd-width-odd-height.y4m

These were generated with e.g.,

ffmpeg -y -f lavfi -i testsrc=size=175x144:duration=5 -pix_fmt yuv420p ~/Videos/odd-width.y4m

Thanks, I can confirm the problem is still there (even after my odd line patches).

Replying to [comment:5 Steve Lhomme]:

Thanks, I can confirm the problem is still there (even after my odd line patches).

Yes I believe it's independent (and as you point out, probably in the copy code) to your picture changes but similar "in spirit".

Fixed by 9d12c0827930eb023db54570b2cc9299594c6e04

added Status::fixed label

changed milestone to %3.0.x maintenance

closed

changed milestone to %3.0.2