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H.264 BD vs. MPEG2 BD CBR multiplexed issue ?

Dec 25, 2012 9:43 PM

Let me know if you need more information here. I have a ~12 minute long video made from predominantly 720p source along with some audio tracks, a few stills, etc. Long story for a different day, but for now I need to export using CBR. If I export using the H.264 Blu-ray 720p 59.94 CBR multiplexed with the bit rate set to 25to produce a .m2t file the audio is craked up and the playback is laggy, slower than real time. This occurs on an i7, 32GB, GTX 670, RAID 0 PC as well as natively off a USB flash drive on a Sony BD player. If I use the same settings / .m2t with the MPEG2 Blu-ray format I have no issue. Or if I drop the bit rate to 15 (default) on the H.264 it works. Anyway, is this result to be expected? Thanks

1063 Views 20 Replies Latest reply: Jim Simon, Jan 8, 2013 5:51 PM

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1. Jim Simon,

Dec 26, 2012 6:09 PM in reply to joneisele

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How are you playing on the PC?

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2. joneisele,

Dec 27, 2012 8:09 AM in reply to Jim Simon

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I took about 30 seconds of one of my sequences as an experiment here and produced four export files: 1) H264 BD CBR 25 mbps; 2) H264 BD CBR 15 mbps; 3) MPEG2 BD CBR 25 mbps; 4) MPEG2 BD CBR 15 mbps.

WMP: audio hiccups and cracks on #1, but the rest play ok.   Same result on Sony BD player as well.
VLC: #1 and #2 have no audio on play; #3 and #4 have audio hiccups and cracks
PPCS6: pulling the exported files back into PP and playing in the source monitor: no audio on all four tracks.

In case it matters in this particular case the video is just still photos placed on a video track with some .wav files underneath that were recorded with a USB microphone.

I did another experiment taking a 720p off the video camera used and produced the same four exports.    WMP seemed ok on all, although in this case the audio is wind noise on a bicycle descending, so maybe harder to tell if minor problems exist.    VLC experience was the same; PPCS6 emitted a medium pitch alarm/buzzing sound for audio.

I am really perplexed by the behavior of PP in this case.   Thoughts?

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3. joneisele,

Dec 27, 2012 9:01 AM in reply to joneisele

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I'm losing my mind ... A while back I produced a .m2t file using footage from this same camera. If I pull in that prior exported file it plays ok in CS6.   However, I just loaded that same project and exported using the same settings best I remember.   The new exported file plays ok in WMP, but no audio in CS6.

Am I doing something wrong here?   It is as though PP can no longer play muxed files produced out of PP (in recent tims).

Have you ever heard of CS6 being corrupted or having glitches from patches or whatever?     At one point not to long ago I did install some sort of patch upgrade from Adobe; the title templates stuff was goofy and some thing were missing.   I'm grasping at straws here and don't want to go through the headache of unintsalling, reinstalling, etc. if that doesn't make any sense.

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4. Jeff Bellune,

Dec 27, 2012 9:23 AM in reply to joneisele

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I'd start by:

1. Cleaning the Media Cache Database
2. Trashing your Preferences. Read here: Adobe - Blog: Having weird
    behavior with an Adobe video product? Consider tossing your
    preferences away
    <http://blogs.adobe.com/genesisproject/2009/11/having_weird_behavior_wi th_an.html>

Jeff

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5. joneisele,

Dec 27, 2012 10:52 AM in reply to Jeff Bellune

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I removed the Preferences folders for PP and AME as noted in the link above. Cleaned the Media Cache Database from within PP, then renamed the Username/AppData/Roaming/Adobe/Common directory to a different name (cache setting was pointing in here). No difference.

Putting the above aside, looks like I'm not crazy and something has gone wrong with PP along the way ...

http://forums.adobe.com/message/4909913

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6. joneisele,

Dec 27, 2012 10:55 AM in reply to joneisele

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Forgot - the above redirect is for the why it doesn't play in PP question which was in response to Jim's question about how I was playing the original files mentiond above. That issue is still there - why does an MPEG2 Blu-ray CBR 25 mbps file play ok, but not an H.264 Blu-ray 25 mbps file? Is there something more complicated about decoding higher bit rate H.264 vs. MPEG2 such that both WMP and my Sony BD player would choke? Again the H.264 Blu-ray CBR 15 mbps plays ok. Thanks, Jon

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7. Jim Simon,

Dec 27, 2012 12:01 PM in reply to joneisele

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Try uploading a file that you're having trouble with. I want to test it out on my system.

http://www.depositfiles.com/en/

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8. joneisele,

Dec 27, 2012 1:18 PM in reply to Jim Simon

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Jim: source files or one of the resultant exported files?

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9. Jim Simon,

Dec 27, 2012 5:23 PM in reply to joneisele

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I assume you're not having any trouble with the source media, only the exports, right?

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10. joneisele,

Dec 28, 2012 2:45 PM in reply to Jim Simon

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Jim: no issue with the source. I found that I can play the higher bit rate H.264 Blu-ray CBR 25 mbps file on my Sony PS3, but again PC and a BD do not work. That said, let's postpone the uploads temporarily. There is something wrong with CS6 and exporting to .m2t files; see the link above to the other post. I contacted Adobe support today and they were able to reproduce the problem and now investigating. The playback issue here may be exacerbated by this audio problem.

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11. joneisele,

Jan 4, 2013 8:09 AM in reply to joneisele

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Jim: let's see how your systems work. That issue with Adobe not playing the .m2t file audio and emitting a hum went away somehow, not sure what changed there. Others have reported the issue as well. Anyway, back to the original issue with a CBR 25 mbps H.264 Blu-ray multiplexed file choking on a fast PC in WMP and VLC and also a Sony BD player. However, it plays ok within Adobe PP CS6 and on my PS3. I suspect I'm just dealing with a decoding power issue, but admittedly was surprised since the equivalent settings produced using the MPEG2 Blu-ray or regular MPEG2 formats work ok. Do I just upload a file and then email you the resultant link? Are ~2GB files ok or do you want me to go back and pair down a shorter sequence / partial? Thanks, Jon

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12. Ann Bens,

Jan 4, 2013 8:25 AM in reply to joneisele

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Does the H264 file choke when exported with no audio, with multiplexer off?

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13. Jim Simon,

Jan 4, 2013 11:08 AM in reply to joneisele

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Do I just upload a file and then email you the resultant link? Are ~2GB files ok?

Yes to both questions.

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14. Jim Simon,

Jan 8, 2013 4:04 PM in reply to joneisele

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The file seems to be playing back just fine for me. Tested on three different media players in an i7 2500 with 8GB of RAM. It also played fine from a USB plugged into a Sony Blu-ray.

AVC is more processor intensive, so if a lack of horsepower is the issue, it's no surprise that MPEG2 files work fine, as they require less power.

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15. joneisele,

Jan 8, 2013 3:47 PM in reply to Jim Simon

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Hi Jim - what media players did you try? The PC I have has an i7-3930, 32GB RAM and WMP has issues. PP CS6 source monitor is ok; just tried VLC and it seemed ok, thought I had issues there before. Weird a Sony BD player can't handle it. Good to know on the MPEG2 format for future reference. Thanks, Jon

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16. Jim Simon,

Jan 8, 2013 4:06 PM in reply to joneisele

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Yeah, that CPU is more than powerful enough, so something else is going on.

I tried KM Player (my default), VLC and Windows Media Player. All worked fine.

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17. joneisele,

Jan 8, 2013 4:34 PM in reply to Jim Simon

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Any thoughts on why WMP would have some issues? When it plays back the audio is skippy if that makes sense. In the past when I've had issues I installed a codec pack and often that fixed things, but that has me paranoid about side effects elsewhere. What version of Windows and WMP do you have on your system? Mine is Windows 7 with WMP 12.07xxxxxx.

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18. Jim Simon,

Jan 8, 2013 4:36 PM in reply to joneisele

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Windows 8, also with WMP 12. I don't know why the issues, though. The file itself seems to be fine.

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19. Stephen_Spider,

Jan 8, 2013 5:02 PM in reply to joneisele

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AAC audio?

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20. Jim Simon,

Jan 8, 2013 5:51 PM in reply to Stephen_Spider

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AC3.

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