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7th March 2017, 08:59 | #21601 | Link |
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There is a new 17.3.1 driver but I haven't managed to test it yet, if anything changed for the better.
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Win 10 x64 (19042.572) - Core i5-2400 - Radeon RX 470 (20.10.1) HEVC decoding benchmarks H.264 DXVA Benchmarks for all |
7th March 2017, 20:10 | #21603 | Link |
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I did it already long time ago. But it is not always possible (or really time-consumnig) to find out which formats are supported by hardware, e.g. if you try to help people, who post their setups on forums, making sometimes wrong assumption that their hardware should support some specific formats they have problems with.
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8th March 2017, 15:08 | #21604 | Link | |
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Quote:
It shows in detail which audio formats are supported by your HDMI sink, e.g. on my AVR: Code:
CE audio data (formats supported) LPCM 8-channel, 16/20/24 bit depths at 32/44/48/88/96/176/192 kHz DTS 6-channel, 1536k max. bit rate at 44/48/88/96 kHz AC-3 6-channel, 640k max. bit rate at 32/44/48 kHz DTS-HD 8-channel, 16-bit at 44/48/88/96/176/192 kHz DD+ 8-channel at 44/48 kHz DVD-A 6-channel at 44/48/88/96/176/192 kHz DVD-A 8-channel at 44/48/88/96 kHz
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HTPC: Windows 10 22H2, MediaPortal 1, LAV Filters/ReClock/madVR. DVB-C TV, Panasonic GT60, Denon 2310, Core 2 Duo E7400 oc'd, GeForce 1050 Ti 536.40 |
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10th March 2017, 09:24 | #21605 | Link |
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The 4K HEVC 10bit clip below, has decoding problems with LAV Video latest version in both SW decoding and HW decoding during normal playback and after seeking.
The same clip plays fine using PotPlayer SW & HW decoding, during playback and after seeking. https://www.sendspace.com/file/sdd6wk
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Win 10 x64 (19042.572) - Core i5-2400 - Radeon RX 470 (20.10.1) HEVC decoding benchmarks H.264 DXVA Benchmarks for all |
10th March 2017, 11:44 | #21607 | Link | |
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Quote:
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10th March 2017, 12:09 | #21608 | Link |
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The framerate drops significantly during playback and after seeking and it's clearly visible like a small stuttering.
You have to decode it in a player that can handle it flawlessly to see the difference.
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Win 10 x64 (19042.572) - Core i5-2400 - Radeon RX 470 (20.10.1) HEVC decoding benchmarks H.264 DXVA Benchmarks for all |
11th March 2017, 00:43 | #21610 | Link | |
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Quote:
Almost same behavior as with the FTC needed but FTC doesn't help at all this time. MPC Video Decoder + Lav Splitter +EVR Sync/EVR Custom (smooth) MPC Video Decoder + Lav Splitter + MadVR (smooth) Lav Video Decoder + Lav Splitter + EVR Sync/EVR Custom (stutters like crazy, dropp count) Lav Video Decoder + Lav Splitter + MadVR (stutters like crazy, dropp count) I really wonder what goes on here that the Match is so crazy off with Lav Video and Hysteresis in the end so heavy and half of the frames get dropped, instead of 0.50 seconds 1 frame every second.
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all my compares are riddles so please try to decipher them yourselves :) It is about Time Join the Revolution NOW before it is to Late ! http://forum.doom9.org/showthread.php?t=168004 Last edited by CruNcher; 11th March 2017 at 10:25. |
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11th March 2017, 10:18 | #21611 | Link |
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There is no performance issue with that clip, but a timestamp issue. I have not figured out yet if the file is just broken or something screws up in the middle.
Other decoders often ignore input timestamps to some degree and create their own new ones, which can hide such issues but in other situations could potentially cause other issues instead (like sync problems). Some basic checking shows that the decoder definitely receives wrong timestamps from the source. If the splitter screws something up or the file has "issues" is yet to be determined.
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LAV Filters - open source ffmpeg based media splitter and decoders Last edited by nevcairiel; 11th March 2017 at 11:05. |
11th March 2017, 10:40 | #21612 | Link |
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yeah it was pretty clear seeing the jumping framerate detection it couldn't really be a Performance issue but more container or bitstream parsing related.
Also performance mostly unlikely as MPC Video Decoder and Lav Video buildup on the same Decoder core anyways and as you said the differences are more internal tuning to the Playback chain (stability) and overall behavior with every internal part.
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all my compares are riddles so please try to decipher them yourselves :) It is about Time Join the Revolution NOW before it is to Late ! http://forum.doom9.org/showthread.php?t=168004 Last edited by CruNcher; 11th March 2017 at 10:50. |
11th March 2017, 11:17 | #21613 | Link |
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Turns out the file is kind of broken, it has no CTTS box which is used to map the DTS to PTS timestamps, which for proper HEVC would be required to generate proper timestamps from mp4.
I applied a work-around I already had in place for H264, so when you use LAV Splitter + LAV Video, it should work now. With other source filters or other decoders, there are no such guarantees. A long term task for me is to make LAV Video automatically detect if DTS timestamps are provided and somehow make that work (right now it relies on LAV Splitter to tell is that), but its a weird heuristic with some problems, so I'm not too eager to try to do this just to fix some broken files.
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LAV Filters - open source ffmpeg based media splitter and decoders Last edited by nevcairiel; 11th March 2017 at 11:20. |
11th March 2017, 12:26 | #21615 | Link |
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Without b frames it's probably fine without.
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LAV Filters - open source ffmpeg based media splitter and decoders |
11th March 2017, 13:43 | #21617 | Link | |
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And a failing file is a good indicator to someone, hey you do something wrong So every parsing workaround that is Hardware Critical in some way should be rather choseable like a strict spec working mode which more imitates how dedicated hardware would react to such a stream. Also i wonder what for regressions such a workaround could cause that without such mode switching abilities would be rather rushing through. Currently Lav Filter only expose the VC-1 timestamp workarounds inside Lav Splitter to the outside but pretty much non of the rest that's going on in Lav Splitter and pretty much 0 of what is behind the scenes done inside Lav Video.
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all my compares are riddles so please try to decipher them yourselves :) It is about Time Join the Revolution NOW before it is to Late ! http://forum.doom9.org/showthread.php?t=168004 Last edited by CruNcher; 11th March 2017 at 14:19. |
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12th March 2017, 14:27 | #21618 | Link |
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Similar case with the previous file, only worst.
You can't even seek, even using latest LAV filters 0.69.08 (splitter + decoder) HEVC 4K 8bit: https://mega.nz/#!5lEhEKLA!MR6D8yPHF...QYM3fQqXW9gd4s
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Win 10 x64 (19042.572) - Core i5-2400 - Radeon RX 470 (20.10.1) HEVC decoding benchmarks H.264 DXVA Benchmarks for all |
12th March 2017, 14:34 | #21620 | Link |
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But the previous similar file didn't have such issues with LAV filters.
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Win 10 x64 (19042.572) - Core i5-2400 - Radeon RX 470 (20.10.1) HEVC decoding benchmarks H.264 DXVA Benchmarks for all |
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decoders, directshow, filters, splitter |
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