[vlc] Re: Streaming to file; good audio but frozen images

[Måns Rullgård]

Steve Mullen <d-v-c at mindspring.com> writes:

> First I muxed an .mp2 audio and an .m2v MPEG-2 file into a file
> (15S_15Mbs_CBR_15.mpg ) as a PS.
>
> This file plays perfectly using either VLC or QT Player under OS X.
>
> Second, I setup 0.6.0 VLC Prefs to convert PS to TS.
>
> Third, I steam to a file.
>
> When I play the TS file with VLC, the audio plays fine. But the video
> is only one or two still frames over the whole 15 seconds.
>
> Below is the VLC Message window when playing the TS file. There are
> many very strange warning messages.
>
> mpeg_video_old warning: backward_pts != current_pts (-33366)

Can someone explain what this one means?

> main warning: late picture skipped (68300)
> macosx debug: stream has changed, refreshing interface
> mpeg_video_old warning: stream periodicity changed from B[1] to B[2]
> main warning: late picture skipped (109361)
> mpeg_video_old warning: stream periodicity changed from B[2] to B[1]
> mpeg_video_old warning: stream periodicity changed from B[1] to B[2]
> main warning: late picture skipped (111620)
> main warning: late picture skipped (78292)
> main warning: late picture skipped (85146)
> main warning: late picture skipped (51822)
> main warning: late picture skipped (12903)

Some frames were badly aligned in the stream compared to the PCR
values and the audio stream.  Try increasing the cache size to
something like 3000 ms.

> mpeg_video_old warning: MPEG1Intra coeff is out of bounds
> mpeg_video_old warning: MPEG1Intra coeff is out of bounds
> mpeg_video_old warning: MPEG1Intra coeff is out of bounds
> mpeg_video_old warning: MPEG1Intra coeff is out of bounds
> mpeg_video_old warning: MPEG1Intra coeff is out of bounds
> mpeg_video_old warning: MPEG1Intra coeff is out of bounds

This looks like an error in the MPEG data to me.

> mpeg_video_old debug: decoded 14/105 pictures

This doesn't look very nice.


-- 
Måns Rullgård
mru at users.sf.net
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