6.2.4 AC3 and player/transcoder versions

[twieder]

The release notes for V6.2.x list new versions of AC3 Filter (1.30b), SageTVPlayer and SageTVTranscoder, however the ones that installed from the 6.2.4 installation are the same one that shipped with 6.1.9.
The AC3 filter is 1.01b, SageTVPlayer is 3.2.3 and SageTVTranscoder is 3.2.3.

Is this an correct? Did the newer versions get removed for some reason?

[nielm]

you are looking at the GCC version used to compile the transcoder and the player The libxxx versions are the important ones for the transcoder.

The Player reports its version as SVN-rUNKNOWN

[kricker]

...and the current version of AC3 filter is actually 1.45b

[Narflex]

1.45b is a beta version. The current stable release is what's in the installer which is 1.11 (the Windows file properties version info doesn't match their version info)

[kricker]

Originally Posted by Narflex

1.45b is a beta version. The current stable release is what's in the installer which is 1.11 (the Windows file properties version info doesn't match their version info)

Are not all the releases except for 1.11 beta? This:

SageTV V6.2.1 Release Notes 5/11/2007 BETA
....
Windows Updates
1. Updated AC3 filter to the latest 1.30b version...

made me think you didn't care to use the beta, so I was just informing that there is actually a newer beta than 1.30b. That way anyone who updated AC3 recently and didn't remember the version they got, they should check.

[Patilan]

Originally Posted by twieder

The release notes for V6.2.x list new versions of ... SageTVPlayer ...

If I'd have to guess, I'd say that the libavcodec in this 'new' SageTVPlayer is older than about March 5, 2005. It still exibits audio/video synch problems with my h.264 videos: the audio's lagging behind the video. Pressing FF or RF gets them synch, but within a minute or so the audio falls back again. The synch problems are especially accute for videos that use bframes with bpyramid.

Remarkably enough, all the h.264s that I mentioned above play perfectly well on any of the numerous versions of MPlayer I've had since early 2006.

These audio synch problems also exist outside Sage, when i just drag-drop a video file on top of SageTVPlayer.exe. And the log below shows some diturbing info which I never see when I use other versions of MPlayer:

[...]
AVI file format detected.
VIDEO: [h264] 704x480 24bpp 23.976 fps 988.8 kbps (120.7 kbyte/s)
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264)
==========================================================================
Opening audio decoder: [liba52] AC3 decoding with liba52
Using 3DNowEx optimized IMDCT transform
Using MMX optimized resampler
AUDIO: 48000 Hz, 2 ch, s16le, 192.0 kbit/12.50% (ratio: 24000->192000)
Selected audio codec: [a52] afm: liba52 (AC3-liba52)
==========================================================================
AO: [dsound] 48000Hz 2ch s16le (2 bytes per sample)
Starting playback...
UNDERFLOW MONITOR THREAD STARTING
Compiler did not align stack variables. Libavcodec has been miscompiled
and may be very slow or crash. This is not a bug in libavcodec,
but in the compiler. Do not report crashes to FFmpeg developers.
[...]

The above just doesn't look right.

-=Patilan=-

[nielm]

Compiler did not align stack variables.

There is a long-running fight between gcc and ffmpeg teams about this. The only compiler version that 'correctly' aligns stack variables is GCC 4.2 which was released only a couple of weeks ago, and has several probems reported on it.

[Patilan]

Originally Posted by nielm

There is a long-running fight between gcc and ffmpeg teams about this. The only compiler version that 'correctly' aligns stack variables is GCC 4.2 which was released only a couple of weeks ago, and has several probems reported on it.

Actually, I have no idea what it means, or whether it has any relation to my audio/synch problem. I only mentioned it because I haven't seen it with other MPlayers, so I thought that it might have some relevance.

=-Patilan=-

[nielm]

Originally Posted by Patilan

If I'd have to guess, I'd say that the libavcodec in this 'new' SageTVPlayer is older than about March 5, 2005.

you would be wrong I am afraid

$ strings SageTVPlayer.exe | grep 'Lav.[0-9][0-9]\.[0-9]' | sort | uniq
Lavc51.40.2

$ strings SageTVTranscoder.exe | grep 'Lav.[0-9][0-9]\.[0-9]' | sort | uniq
Lavc51.40.2
Lavf51.11.0

The latest mplayer 1.0rc1 version from mplayerhq.hu uses Lavc51.21.0 . Libavcodec's compiler check got introduced later than that version...

[Patilan]

I am sure you are right. I just can't find any reasonable explaination for the problem I described above. It's frustrating.

[toricred]

I just noticed the same problem with the audio video synch. Can I just replace sagetvtranscoder with a newer version of mplayer renamed?

[dblaine2]

Originally Posted by toricred

I just noticed the same problem with the audio video synch. Can I just replace sagetvtranscoder with a newer version of mplayer renamed?

Already been tried before by Paitlan I believe. No luck.