wild guess:
Try to enable/disable Vsync in ... driver's control application (I
assume you use proprietary drivers with Nvidia GTX-750ti)
And also same in window manager settings.
Try to set CPU and GPU to maximum performance (I think I observed
some unusually slow playback
when I tried to play av1 files with my libdav1d hack at just 1.8Ghz *
4 cores. Setting CPU to 2.6 Ghz fixed this!
In both cases CPU was not completely loaded, according to gkrellm I
have in a corner)
Try to check how fast your PCI-E link.
(lspci -vv as root)
---------------
01:00.0 VGA compatible controller: NVIDIA Corporation G92 [GeForce
8800 GS] (rev a2) (prog-if 00 [VGA controller])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast
>TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 38
Region 0: Memory at fc000000 (32-bit, non-prefetchable)
[size=16M]
Region 1: Memory at d0000000 (64-bit, prefetchable) [size=256M]
Region 3: Memory at fa000000 (64-bit, non-prefetchable)
[size=32M]
Region 5: I/O ports at e000 [size=128]
Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: [60] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [68] MSI: Enable+ Count=1/1 Maskable- 64bit+
Address: 00000000fee00000 Data: 0000
Capabilities: [78] Express (v2) Endpoint, MSI 00
DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency
L0s <512ns, L1 <4us
ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
DevCtl: Report errors: Correctable- Non-Fatal-
Fatal- Unsupported-
RlxdOrd- ExtTag+ PhantFunc- AuxPwr- NoSnoop+
MaxPayload 128 bytes, MaxReadReq 512 bytes
DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq-
AuxPwr- TransPend-
LnkCap: Port #0, Speed 5GT/s, Width x16, ASPM L0s
L1, Latency L0 <256ns, L1 <1us
ClockPM- Surprise- LLActRep- BwNot-
LnkCtl: ASPM Disabled; RCB 128 bytes Disabled-
Retrain- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 5GT/s, Width x16, TrErr- Train-
SlotClk+ DLActive- BWMgmt- ABWMgmt-
DevCap2: Completion Timeout: Not Supported, TimeoutDis+
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance-
SpeedDis-, Selectable De-emphasis: -6dB
Transmit Margin: Normal Operating Range,
EnterModifiedCompliance- ComplianceSOS-
Compliance De-emphasis: -6dB
LnkSta2: Current De-emphasis Level: -6dB
Capabilities: [100 v1] Virtual Channel
Caps: LPEVC=0 RefClk=100ns PATEntryBits=1
Arb: Fixed- WRR32- WRR64- WRR128-
Ctrl: ArbSelect=Fixed
Status: InProgress-
VC0: Caps: PATOffset=00 MaxTimeSlots=1
RejSnoopTrans-
Arb: Fixed- WRR32- WRR64- WRR128-
TWRR128- WRR256-
Ctrl: Enable+ ID=0 ArbSelect=Fixed TC/VC=01
Status: NegoPending- InProgress-
Capabilities: [128 v1] Power Budgeting <?>
Capabilities: [600 v1] Vendor Specific Information: ID=0001
Rev=1 Len=024 <?>
Kernel driver in use: nouveau
----------------
LnkSta: Speed 5GT/s, Width x16 - sounds like PCI-E 2.0
Check if VDPAU works for simple players - mpv, mplayer.
В сообщении от Thursday 16 May 2019 00:22:30 Pierre autourduglobe
написал(а):
Yes, I am also inclined to believe that my video card is the culprit...
for the lack of frame rate. It would not be able, through Open-GL, to
decode simultaneously the 5 streams (composer + 4 mixers).
I've never played any games on my computers either... but "gamer" cards
are much cheaper than pro cards, while being relatively powerful, and
that's why I've always chosen them for video editing.
My current video card dates from 2014, it's a Nvidia GTX-750ti:
https://www.gigabyte.com/Graphics-Card/GV-N75TOC-2GI#ov
It includes 2 GB of GDDR5 memory, 128-bit memory interface and a
Bandwidth of 86.4 GB/s
If it becomes clear that it is the guilty one... I'm ready to buy
another more powerful one.
I started looking at what could be bought, which would not be too
expensive and would be compatible with my current power supply (which I
don't want to change).
I also don't know if Nvidia video cards or AMD cards would be the most
compatible and optimized for Cinelerra-GG.
Here are the models I'm considering right now:
- Nvidia GeForce GTX 1070 (8GB, 256-Bit GDDR5, Bandwidth 256 GB/s
- Nvidia GeForce GTX 1660 Ti (6GB, 192-Bit GDDR6, Bandwidth 288 GB/s
- AMD Radeon RX 580 (8GB, 256-Bit GDDR5, Bandwidth 256 GB/s
- AMD Radeon RX 570 (4GB, 256-Bit GDDR5, Bandwidth 224 GB/s
But I'm not ready to buy right now....
Pierre
On 19-05-15 16 h 21, Phyllis Smith wrote:
Pierre:
From your last 2 emails and tests as compared to what I see, I am
thinking that the graphics board is the bottleneck. Doing similar
tests
with the Clowns, as compared with your observations below, I am always
getting close to 29.97 fps in either X11 or X11-OpenGL. The reason I
think it is probably your graphics board is because my laptop is not
really a "work" computer but rather a "gaming" computer (it was an
inexpensive AMD computer that has never, ever played a single
game!) so
I would imagine the graphics board is meant to be pretty good.
The results of these tests of the mpeg proxies tell me that
with both
the X11-OpenGL driver and the X11 driver, using vdpau results
in a very
slight reduction in the use of my CPU, but that this does not
improve
the frame rate possible that these video drivers allow to
display...
The above seems to indicate that the graphics board does not improve
anything and you have plenty of CPU anyway, so you might as well
use that.
X11 allows in all cases to display at least 29.97 frame/sec
sources
that
have been shot at this speed.
X11-OpenGL is always limited to a maximum of about 12 frames/sec.
These results are approximately true for all the types of media I
tested, whether DNxHD.mov, HDV (MPEG-2.m2t), AVC H264.mp4 or even
proxies in mpeg.mpeg.
Given these results, I don't really see the advantage of using
proxies... In any case, the video driver used will determine the
possible frame rate regardless of the type of media used.
I'm actually wondering if the constant frame rate limit of 12
frames/sec
provided by X11-OpenGL in my tests with 4 mixers, regardless
of the
media type, doesn't actually indicate a bug somewhere or a limit
inherent in my equipment. But then how do you explain the best
throughput with X-11?
Instead of working with 29.97 fps media, I loaded Big Buck Bunny which
is 60 frames per second. And there may be something strange going
on as
Pierre indicated that I will have to test on a faster computer.
Because
when I played this, like Pierre, it seems to limit it at always 30 fps
whether I user X11 or OpenGL. Then when I proxy it to 1/2, I
thought I
should have improved the frame rate but it too was at only 30 fps.
I will have to do the tests on GG's computer to eliminate the
possibility of a limitation / bug. Phyllis
