Latest post Mon, Sep 11 2017 3:59 PM by Joachim Claus. 24 replies.
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  • Tue, Sep 5 2017 8:01 PM In reply to

    • Vilem
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    Re: GH5 4K files will NOT transcode. Constant Errors.

    Atomike:
    The file will transcode without crashing, but since I only get a green screen, that seems like a hollow victory.

    It looks more like a 10-bit codec. I did not have any problems with "mov" 4k 50p 8bit 4: 2: 0 of GH5.

    What says "MediaInfo"?

    V.

    AVID MC8.9.1 - dongle, INTEL Core i7-950,Gigabyte-GA-EX58-UD5, Quadro P2000 - driver 385.08, RAM 24GB - 6 x DDR3, BM Intensity Pro 4k - 10.9.5, W10 -... [view my complete system specs]
  • Tue, Sep 5 2017 8:24 PM In reply to

    • Atomike
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    Re: GH5 4K files will NOT transcode. Constant Errors.

    For video, it says AVC Long-GOP High422.  So, it looks like despite my thoughts to record at 4:2:0, it looks like it's 4:2:2, and you are 100% correct.  Many thanks for everyone's suggestions, but my own incompetence seems to be the common denominator in all of these issues.

    I will do a 4:2:0 test, but I'm guessing that will ingest fine.  As a relatively new format, I can't be upset with Avid for not supporting 4:2:2, and so all of my scathing and hyperbolic criticisms are withdrawn.  I sure enjoyed being mad though. Now, I have nothing left to do but figure out how to best deal with my 4:2:2 mistake.

    I think I read in the other thread that people were having luck using Resolve or Fusion or something similar to convert 4:2:2, but I'll need to check.  If I can output something from Premiere that Avid will take that's 4K, that would be perfect.

    Again, thanks for everyone's help.

     

    Media Composer 8.X (usually newest release), Avid matrix-recommended versions of both Nvidia driver and Quicktime, Matrox Mini MX02, Self-built machine... [view my complete system specs]

    I spend most of my time between New York and Los Angeles.  In Nebraska.

  • Tue, Sep 5 2017 8:28 PM In reply to

    Re: GH5 4K files will NOT transcode. Constant Errors.

    4:2:2 works excellent at my system by linking playing back and transcoding.

    It might be the duration as well of a file but I am not sure about that either.

     


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    Larry as long as I live I will remember you.

     

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  • Tue, Sep 5 2017 8:37 PM In reply to

    • DStone
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    • Moderator: Media Composer Getting Started

    Re: GH5 4K files will NOT transcode. Constant Errors.

    At this point, what we really need is someone with a GH5 do do a bunch of tests:

    In 8-bit (4:2:0)
    Link to short (5-minute or less) MP4 and QT files using Avid Generic and QT plug-ins.
    Transcode both using defaults.
    Transcode both using Set Framerate to Project.

    Link to long (20-minute or longer) MP4 and QT files using Avid Generic and QT plug-ins.
    Transcode both using defaults.
    Transcode both using Set Framerate to Project.

    In 10-bit (4:2:2)
    Repeat the same as for 8-bit

    The question is: What actually works (what links and plays back properly, and what transcodes properly)?

    DIY quad core I7-4790K, 16Gb, NVidia GTX 970 4GB, Win 10 Pro, MC 8.7, MC 7.x [view my complete system specs]

    Dave S.

  • Tue, Sep 5 2017 8:47 PM In reply to

    • Vilem
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    Re: GH5 4K files will NOT transcode. Constant Errors.

    Unfortunately, I have GH5 in service, so soon I can not do the necessary tests.

    The 4K 50p 8bit in "mov" works well with the QuickTime plug-in. But I'm working on the HD 50p project.

    Tomorrow I can try 50i or 25p.

    V.

    AVID MC8.9.1 - dongle, INTEL Core i7-950,Gigabyte-GA-EX58-UD5, Quadro P2000 - driver 385.08, RAM 24GB - 6 x DDR3, BM Intensity Pro 4k - 10.9.5, W10 -... [view my complete system specs]
  • Wed, Sep 6 2017 7:58 PM In reply to

    • touviere7
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    Re: GH5 4K files will NOT transcode. Constant Errors.

    working on a short true 4k project here and everything is working fine.

     

    c4k_true 24p_4:2:2_10bit   all short clips linked with avid generic plugin

    they play flawlessly on my timeline (back and forth) linked to an ssd drive.

     

     

    now, just for testing purpose, i transcoded successfully a bunch of clips to dnxxhr hqx.

    i also recorded a test clip for 4:58.

    played fine on timeline but would not complete a transcode.

    i tried several mixdown and here's the results:

    dnxhr hqx      stopped at 2:56:14 (15.3GB file)

    dnxhr sq        stopped at 4:16:00 (14.6 GB file) 

    dnxhr lb        stopped at 3:45:01 (4.01GB file)

     

    not  gonna jump to any conclusion now... :-)

    mc 8.9.1 - QT essential 7.7.9 - win 10 pro64 creators - nVidia gtx1080 OC (385.41) - intel i7 6800k@4.1ghz water cooled by corsair H100i V2 - MSI X99A... [view my complete system specs]

    the time you enjoy wasting is NOT wasted time...

  • Mon, Sep 11 2017 11:48 AM In reply to

    • Joachim Claus
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    Re: GH5 4K files will NOT transcode. Constant Errors.

    I made some tests with different methods of transcoding UHD/50p H.264 video created by Panasonic AG-DVX200, which records probably in the same format as GH5. The camcorder was set to UHD/50p, 150Mbit/s with QuickTime files, i.e., th H.264 video is wrapped with QuickTime to .MOV files. In total I used 23 consecutive clips with a total length of 3:43:10.

    The following tests were made:

    1a. Linking with Avid MC 8.9.1 with QuickTime Plug-In selected.

    Linking runs fast, timecode is correct, however many clips show only green frames. Even re-linking with Source Browser did not help in all cases. I checked all clips in Source Monitor and dropped them to  sequence, which crashed MC because again some clips show green frames when placed in the sequence.

    Transcoding the files to DNxHR SQ produced correct clips. Transcodeing is relatively slow. When running in Back Ground, Transcoding needed 13:25 minutes. When transcoding runs in direct mode, it needed 11:30 minutes.

     

    1b. Linking with Avid MC 8.9.1 with Avid Generic Plug-In selected.

    Linking runs fast, all linked clips play fine. However, all timecodes are wrong. Start timecode is one frame earlier, last frame of the clip is dropped. A consecutive sequence of clips result in one clip missing at any new clip on the sequence.

    Transcodeing in Back Ground is quicker than with QuickTime Plug-in. All 23 clips neded 9 mintes for transcoding.

     

    2. Transcoding source clips with TMPGEnc. Video Mastering Works 6 into DNxHR SQ

    It runs well, however extremely slow. The first clip with a length of 22:28 seconds needed more than 5 minutes.

    Linking the transcoded clips withSource Browser (QuickTime Plug-In) runs well. They do not show the problem of all green frames.

    The disadvantage is, that TMPGEnc. does not consider the timecode of the source clips. All clips start with timecode 00:00:00.

     

    3. Transcoding source clips with TMPGEnc. Video Mastering Works 6 into Sony XAVC S 

    It runs well and is faster than in test 2.

    The clips were linked with the new nablet XAVC S-Plug-In. All clips are fine with no clip showing the all green frames error. Transcoding clips in Background is slow. It took 2:59 minutes to transcode three clips with a total length of 1:06:12 minutes.

    Again, the disadvantage is, that TMPGEnc. does not consider the timecode of the source clips. All clips start with timecode 00:00:00.

     

    4. Transcoding source clips with ClipToolz (a freeware tool) into ProRes 4K 4:2:2 Std.

    It runs fine and needed 11:47 minutes for all 23 clips with a total length of 03:43:10. ClipToolz transcoder runs with 18 fps on my workstation.

    The clips were linked with Source Browser. They all play nice. No green screens.

    A severe problem, however, is, that ClipToolz does not handle timecode correctly when source material is in 50fps or 60fp. The framecount of the first frame should be multiplied by two (it is correct when running in 25fps or 30fps), which leads to overlapping timecodes of the resulting clips.

     

    5. Linking source clips with DaVinci Resolve, and creating a timeline with the linked clips within Resolve

    It runs quick and reliable. Timecode is handled correctly.

    Output the sequence (timeline in Resolve) with the prdefined setting "Avid AAF" produces Avid compatible .MXF-files which can be directly imported into Avid Media data base (copy files into Avid MediaFiles\MXF\<decimal number>). Avid recognizes the new files. The associated AAF-file can be imported and gives exactly the timeline from Resolve with all master clips present in the bin.

    The file export (including transcoding from H.264 into DNxHR SQ) runs extremely fast. It needed 3:37 minutes for all 23 clips of total length 03:43:10 minutes. Resolve runs with 56 fps when transcoding/exporting on my workstation, i.e., it runs slightly faster than clips play in real time.

    All timecode information is correct.

     

    Summary:

    Currently the best mehod to get H.264 media into Avid MC is the way via Resolve. It is reliable quick and without any error. In addition one can make initial color corrections already before sending the clips to MC.

    Joachim 

    SuperMicro Workstation 7048A-T Dual Xeon (10 cores) E5-2640v4 2.4GHz 128 GB RAM, PNY M4000, 1 PCIe SSD 400 GB (Intel SSDPEDMW400G4) 1 SSD 2 TB for UHD... [view my complete system specs]

    Joachim Claus

  • Mon, Sep 11 2017 1:18 PM In reply to

    • DStone
    • Top 50 Contributor
    • Joined on Fri, Nov 4 2005
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    • Moderator: Media Composer Getting Started

    Re: GH5 4K files will NOT transcode. Constant Errors.

    Nice test. The only issue I have with Resolve is that performance is largely based on the graphics card(s). If you were running something like a GeForce GTX 760 the performance would be notably worse. Of course, if you had a couple of GTX 1080's, the performance would be notably better.

    It's really amazing though; all of these products that deal with video, and many of them don't work fully in all cases.

    DIY quad core I7-4790K, 16Gb, NVidia GTX 970 4GB, Win 10 Pro, MC 8.7, MC 7.x [view my complete system specs]

    Dave S.

  • Mon, Sep 11 2017 3:36 PM In reply to

    • Joachim Claus
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    • Joined on Fri, Nov 4 2005
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    Re: GH5 4K files will NOT transcode. Constant Errors.

    DStone:
    The only issue I have with Resolve is that performance is largely based on the graphics card(s). If you were running something like a GeForce GTX 760 the performance would be notably worse. Of course, if you had a couple of GTX 1080's, the performance would be notably better.

    In my current workstation (the one I made the test with) I have a Quadro M4000. In my second (older) workstation I have a Quadro K2000D. I will do the same test there with the same Resolve version and will report the result

    Joachim

    SuperMicro Workstation 7048A-T Dual Xeon (10 cores) E5-2640v4 2.4GHz 128 GB RAM, PNY M4000, 1 PCIe SSD 400 GB (Intel SSDPEDMW400G4) 1 SSD 2 TB for UHD... [view my complete system specs]

    Joachim Claus

  • Mon, Sep 11 2017 3:59 PM In reply to

    • Joachim Claus
    • Top 150 Contributor
    • Joined on Fri, Nov 4 2005
    • Seeheim-Jugenheim, Germany
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    Re: GH5 4K files will NOT transcode. Constant Errors.

    I tested the transcode/Export of same set of clips with Resolve 14 on my older workstation (Quadro K2000D, dual Hex-core CPUs 3.4 GHz) and it took 6:32 minutes. The transcode/export process was running in Resolve with 32 fps.

    So, infact, the performance is not as high as with my newer workstation, however it is still better then transcoding inside MC 8.9.1.

    Joachim

    SuperMicro Workstation 7048A-T Dual Xeon (10 cores) E5-2640v4 2.4GHz 128 GB RAM, PNY M4000, 1 PCIe SSD 400 GB (Intel SSDPEDMW400G4) 1 SSD 2 TB for UHD... [view my complete system specs]

    Joachim Claus

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