Author Topic: Maximum h264 bitrate  (Read 4328 times)

Offline cniedzi

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Maximum h264 bitrate
« on: May 07, 2015, 09:49:42 PM »
Hi,

What is maximum h264 video bitrate @1080p60 MED800X3D can handle?

Offline jer1956

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Re: Maximum h264 bitrate
« Reply #1 on: May 08, 2015, 08:37:27 AM »
Search  for jellyfish tests on the forum. I believe some have managed 120 mbps.....but I wouldn't recommend using such  a bitrate just because of that. Your best limiting your self to the max BD MVC rate...72 mbps.....which the chip is designed to  cope with. Anything else is a "bonus" that might change with tweaks made to  the firmware for other reasons.

Those transcoding may find lower bitrates have issues related to  the encoding settings used.....handbrake has device profiles because each chip make has different limits for various h264 settings.

Its best just to clone....all chips have to play DVD and BD clones....so  you can swap  from player to player, and chip  to  chip knowing the media has to  play.

Offline m3dmer3er3r_4

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Re: Maximum h264 bitrate
« Reply #2 on: May 09, 2015, 12:23:22 PM »
one forum was a good post..

 
Quote

Blu-Ray uses ~12-20 Mb/s. DVB HDTV does h.264 in the 8-12 Mb/s range. Those are your "typical" rates.

If you compress below that, expect quality to drop fast. Many seem happy to downsize to 1280x720/24p at DVD rates to fit a movie to a single layer DVDR but that is way below Blu-Ray quality.

Remember that an uncompressed 1920x1080/24p master will be in the 3000 Mb/s range so Blu-Ray is already over 100x compressed.
 
« Last Edit: May 09, 2015, 01:22:05 PM by m3dmer3er3r_4 »

Offline mr.tyler-durden

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Re: Maximum h264 bitrate
« Reply #3 on: May 10, 2015, 08:58:51 AM »
I don't want to start a new thread, but would raise this question because of issues I have with lossless audio streams on Mede8er.

There is an example file: http://s1.demo-world.eu/hd_trailers.php?filename=dts_paint_symphony_lossless-DWEU.mkv
While playing this file with audio passthrough from Mede8er to AVR, Mede8er seems to have problems with this lossless audio stream, like on other ones I ripped by my one from a BD (e.g. "Noah" - DTS-HD MA 7.1). The sound disappears for one or more seconds and comes back; disappears again and so on. It doesn't belong to specific time frames on the mkv, because this doesn't happen on the same time frames on every play back.
What's confusing is that this only happens on passthrough, not when Mede8er is decoding audio to bring it on the TV speakers. But I can exclude my AVR to be the problem source, because while playing from PC to AVR this sound issue doesn't occur.
Anybody's got the same issue?
MED: 1000X3D - V4.0.1 (April beta)
A/V:   Onkyo TX-NR616 (7.1 setup)
TV:    Sony KDL-55W905
NAS:  Synology DS414 (4x4TB)

Offline APMichael

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Re: Maximum h264 bitrate
« Reply #4 on: May 11, 2015, 10:04:11 AM »
I don't want to start a new thread, but would raise this question because of issues I have with lossless audio streams on Mede8er. ... Anybody's got the same issue?

I watched many of those demo videos and I never had problems with the lossless audio stream. All my demo videos are m2ts files. (Recently "Demo World" starts to convert them into mkv files.) I played them directly from a USB flash drive, because my WiFi connection is too slow.

Did you play the videos from your NAS or from an attached USB drive? Maybe there is an issue with the network share?

Edit: Two other thoughts:

- Check if the picture option "Deep Color" is set to OFF (8 Bit).
- Try another HDMI input and/or another HDMI cable.


(MED600X3D, V4.0.1)
« Last Edit: May 12, 2015, 09:36:02 AM by APMichael »
Mede8er MED600X3D (V4.0.2-6April2016-p2), Denon AVR-2310

Offline mr.tyler-durden

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Re: Maximum h264 bitrate
« Reply #5 on: May 17, 2015, 03:48:36 PM »
Thanks for your comment and sorry for my late response.
I did not help. I've tried it now from USB device, SMB and NFS - with 8/10/12 bit. While having same file from the same NAS played via PC to AVR this sound issue doesn't occur...  ???
MED: 1000X3D - V4.0.1 (April beta)
A/V:   Onkyo TX-NR616 (7.1 setup)
TV:    Sony KDL-55W905
NAS:  Synology DS414 (4x4TB)

Offline APMichael

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Re: Maximum h264 bitrate
« Reply #6 on: May 26, 2015, 09:22:07 AM »
@mr.tyler-durden:

Yesterday I tested some of the re-encoded MKV files. They played all flawless without any audio dropouts.

Maybe there is a firmware update for your Onkyo? (A few years ago Onkyo had some issues with DTS-HD MA.)
Mede8er MED600X3D (V4.0.2-6April2016-p2), Denon AVR-2310

Offline mr.tyler-durden

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Re: Maximum h264 bitrate
« Reply #7 on: May 26, 2015, 05:14:27 PM »
Thanks for response.
I just tried again the DTS-HD MA test mkv file, I mentioned before. Funny thing is, it plays well over NFS instead of SMB stored on my NAS. The connection is 1 GBit/s directly and I wonder if the SMB protocol is that resource hungry... or Mede8er just has problems with SMB.  ???
With my re-encodet movie and its HD-MA stream I still have the same issue, regardless of USB or SMB or NFS.
Though I installed the latest firmware update for my Onkyo AVR (2014-12-18), nothing changed on this.
Like I said, there is no problem occuring, as long as my PC is bitstreaming the same file from NAS to AVR. And the PC is connected via ncWLAN to the NAS and with SMB! And the HDMI from PC to AVR is 15 meters long. So I would exclude the AVR and the mkv file itself.
Don't have any idea... May I post the MediaInfo from the mkv?
MED: 1000X3D - V4.0.1 (April beta)
A/V:   Onkyo TX-NR616 (7.1 setup)
TV:    Sony KDL-55W905
NAS:  Synology DS414 (4x4TB)

Offline jer1956

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Re: Maximum h264 bitrate
« Reply #8 on: May 26, 2015, 06:12:06 PM »
We have pointed out often that to stream 3d bd ISO  the players code was optomised for the only protocol found good enough for most setups.....NFS. SMB throughput was sacrificed to do it.....

SMB is  mainly a document sharing protocol....not media streaming. As  a result its bloatware on windows PC's.  Its just easier to install hanewin and ignore windows smb completely. NAS users may have leaner smb code, but that's not much use if your source is a PC. In you case you can use a powerful PC as a client for comparitive tests. The 1186 CPU is puny by comparison. That's the bottleneck that the players code has been tuned to deal with.
« Last Edit: May 26, 2015, 06:26:26 PM by jer1956 »

Offline Mede8er1

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Re: Maximum h264 bitrate
« Reply #9 on: May 26, 2015, 06:50:49 PM »
I have a suspicion this is a compatibility issues with the Onkyo amp. My Yamaha amp was hit by lightning strike and I replaced it with a Onkyo and I have same problems with MKV with DTSMA from all sources including HDD and USB. The same file plays fine on my  colleagues Yamaha. I remuxed the MKV to DTS Core5.1 then it was fine. I have no idea why this happens with MKV and DTSMA on the Onkyo  - on the other hand BDISO with DTSMA play fine. 

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Offline mr.tyler-durden

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Re: Maximum h264 bitrate
« Reply #10 on: May 26, 2015, 07:03:50 PM »
... with a Onkyo and I have same problems with MKV with DTSMA from all sources including HDD and USB. The same file plays fine on my  colleagues Yamaha. I remuxed the MKV to DTS Core5.1 then it was fine. I have no idea why this happens with MKV and DTSMA on the Onkyo  - on the other hand BDISO with DTSMA play fine. 

Oh, well, thank you for that comment, even when this doesn't make me happy...  :(
Yeah, I have several other DTS-HD MA 7.1 as well as Dolby TrueHD 7.1, even Atmos Streams with more than 5.000 KBit/s audio stream. Most of them are doing well with Mede8er - SMB NAS - Onkyo. Only a few don't.
May I ask you which Onkyo amp you did have?

I'll mux the concerning MKV to a BD ISO with tsMuxer and give it a try.
MED: 1000X3D - V4.0.1 (April beta)
A/V:   Onkyo TX-NR616 (7.1 setup)
TV:    Sony KDL-55W905
NAS:  Synology DS414 (4x4TB)