Opened 3 years ago

Last modified 3 years ago

#4149 evaluated Bug

black blocks on videos

Reported by: rexx-fan Owned by:
Priority: normal Milestone:
Component: Internal Filters Version: 1.7.3
Severity: normal Keywords:
Cc: Underground78 Evaluation: need info


So far all MPC-HC versions released in 2014 show black blocks on videos converted with FFmpeg release versions (2.1.x, at the moment 2.1.4) to OGV (libtheora) or WEBM (libvpx VP8). No problems with MP4, but for MediaWiki commons I can't use MP4.

As far as Windows Media Player can show these formats at all they work without issues. Mplayer also has no problems, but maybe that only means that FFmpeg groks its own output :-) But MPC-HC 64bit 1.7.3 fails :-(

Attachments (1)

Acela_passes_through_Kingston_Station_in_Rhode_Island.webm (1.5 MB) - added by rexx-fan 3 years ago.
WebM variant of problematic OGV has similar issues

Download all attachments as: .zip

Change History (9)

comment:1 Changed 3 years ago by JellyFrog

Can you upload a sample video somewhere?

comment:2 Changed 3 years ago by vBm

Also I'd suggest that you try those clips with latest nightly because there were updates to LAV's several time.

Changed 3 years ago by rexx-fan

WebM variant of problematic OGV has similar issues

comment:3 Changed 3 years ago by rexx-fan

OGV with issues at

Derived from

The commons version uses OPUS for audio causing major troubles for MediaWiki and Windows Media Player, but MPC-HC can play it (with sound). The derived version uses Vorbis instead of OPUS, works in WMP, but has black blocks in MPC-HC. I also tried WebM, but then it's not only black blocks, the whole video flickers.

comment:4 Changed 3 years ago by Underground78

Cc: Underground78 added
Component: GeneralInternal Filters
Evaluation: need info
Status: newevaluated

Please try the latest nightly build as advised by vBm. If the problem is still here, we need to be sure the problem isn't in ffmpeg (trying ffplay is a good solution to make sure of that).

comment:5 Changed 3 years ago by vBm

Both files play just fine here using latest nightly.

comment:6 Changed 3 years ago by rexx-fan

FFplay can play all versions (OGV OPUS, OGV Theora, WebM), at the end of the videos it enters some machine gun sound dead loop, so something with the audio might be already in the original OGV OPUS.

But wrt MPC-HC I only worry about this and other videos converted by FFmpeg to these formats, not the specific OPUS audio problem in this example. For nightlies/aurora/canary I pass, I only use wannabe-stable versions with decent numbers.

comment:7 Changed 3 years ago by Underground78

Well if the files play fine in the latest nightly build then it means the problem is fixed already.

The nightly should be stable enough to be used if you need a fixed version quickly. Next stable version will have the fix but we can't announce any release date yet.

comment:8 Changed 3 years ago by Underground78

I can't reproduce the issue even with stable version 1.7.3 64-bit.

Are you sure you're using the internal filters? Could you tell us what you see in Play > Filters?

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