GPU Acceleration

[sub]

INTEL (qsv) is working here for live streams.

[aderlopas]

I was trying various examples from this page:

https://trac.ffmpeg.org/wiki/Hardware/QuickSync

And the below command works without errors:

"C:\Program Files\NPVR\Other\ffmpeg.exe" -init_hw_device qsv=hw -filter_hw_device hw -f rawvideo -pix_fmt yuv420p -s:v 1920x1080 -i "http://127.0.0.1:8866/live?channeloid=7562&transcoder=3f149498-ce76-492c-a394-c0b2ab103364&client=5c53419a-db74-43eb-b730-b60c7506a7e8" -vf hwupload=extra_hw_frames=64,format=qsv -c:v h264_qsv -b:v 5M -f null NUL

But I have no clue of what it is doing....

[sub]

That example Martin supplied was for D3D11VA. Might be worth trying it with INTEL in NextPVR, them look in your nrecord.log for the ffmpeg command line used, and try that.

[aderlopas]

That example Martin supplied was for D3D11VA. Might be worth trying it with INTEL in  NextPVR, them look in your nrecord.log for the ffmpeg command line used, and try that.

thanks Sub,

So I used Martin's command line and I started eliminating things. So if from the below line:


"C:\Program Files\NPVR\Other\ffmpeg.exe" -y  -hwaccel:v:0 qsv  -hwaccel_device:v:0 0 -i "http://127.0.0.1:8866/live?channeloid=7562&transcoder=3f149498-ce76-492c-a394-c0b2ab103364&client=5c53419a-db74-43eb-b730-b60c7506a7e8" -map_metadata -1 -threads 0 -ignore_unknown -map 0:v:0? -map 0:a:0 -map -0 -codec:v:0 h264_qsv -b:v 2M -look_ahead 0 -maxrate 1500000 -bufsize 3000000 -codec:a:0 aac -strict experimental -ac 2 -ab 128000 -f null NUL

I eliminate the below switch:

-codec:v:0 h264_qsv

Then the below line works with no errors:

"C:\Program Files\NPVR\Other\ffmpeg.exe" -y  -hwaccel:v:0 qsv  -hwaccel_device:v:0 0 -i "http://127.0.0.1:8866/live?channeloid=7562&transcoder=3f149498-ce76-492c-a394-c0b2ab103364&client=5c53419a-db74-43eb-b730-b60c7506a7e8" -map_metadata -1 -threads 0 -ignore_unknown -map 0:v:0? -map 0:a:0 -map -0  -b:v 2M -maxrate 1500000 -bufsize 3000000 -codec:a:0 aac -strict experimental -ac 2 -ab 128000 -f null NUL


So what have I done by eliminating the switch: -codec:v:0 h264_qsv  
And how I can use this knowledge to enable hardware acceleration in NextPVR in my PC?

[mvallevand]

I can't test I am on linux now but qsv looks incomplete based on the first log.

Code:

"C:\Program Files\NPVR\Other\ffmpeg.exe" -y  -i http://127.0.0.1:8866/live?channeloid=7564&transcoder=61f7e06a-6aae-4c51-ab24-924788dd6959&client=75a2c169-2bc5-42d3-a9b7-fb5738e37dde -map_metadata -1 -threads 0 -ignore_unknown -map 0:v:0 -map 0:a:0 -map -0:s -codec:v:0? h264_qsv -vf yadif=0:-1:0 -profile:v baseline -level 3.0 -look_ahead 0 -b:v 2000000 -maxrate 2000000 -bufsize 4000000 -vsync vfr -profile:v high -level 41  -s 1280x720  -flags -global_header -sc_threshold 0 -codec:a:0 aac -strict experimental -ac 2 -ab 192000 -af "adelay=1,aresample=async=1"  -f null NUL

Martin

[aderlopas]

I can't test I am on linux now but qsv looks incomplete based on the first log.

Code:

"C:\Program Files\NPVR\Other\ffmpeg.exe" -y  -i http://127.0.0.1:8866/live?channeloid=7564&transcoder=61f7e06a-6aae-4c51-ab24-924788dd6959&client=75a2c169-2bc5-42d3-a9b7-fb5738e37dde -map_metadata -1 -threads 0 -ignore_unknown -map 0:v:0 -map 0:a:0 -map -0:s -codec:v:0? h264_qsv -vf yadif=0:-1:0 -profile:v baseline -level 3.0 -look_ahead 0 -b:v 2000000 -maxrate 2000000 -bufsize 4000000 -vsync vfr -profile:v high -level 41  -s 1280x720  -flags -global_header -sc_threshold 0 -codec:a:0 aac -strict experimental -ac 2 -ab 192000 -af "adelay=1,aresample=async=1"  -f null NUL

Martin

Thanks Martin for the assistance. This command results in the below messages:

[mpegts @ 04a14ac0] Could not find codec parameters for stream 3 (Unknown: none ([5][0][0][0] / 0x0005)): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
[mpegts @ 04a14ac0] Could not find codec parameters for stream 4 (Unknown: none ([11][0][0][0] / 0x000B)): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, mpegts, from 'http://127.0.0.1:8866/live?channeloid=7564&transcoder=61f7e06a-6aae-4c51-ab24-924788dd6959&client=75a2c169-2bc5-42d3-a9b7-fb5738e37dde':
  Duration: N/A, start: 51503.878944, bitrate: N/A
  Program 2800
    Stream #0:0[0xafa]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(top first), 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
    Stream #0:1[0xafb](gre): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, fltp, 192 kb/s
    Stream #0:2[0xafd](gre): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
    Stream #0:3[0xaff]: Unknown: none ([5][0][0][0] / 0x0005)
    Stream #0:4[0xb00]: Unknown: none ([11][0][0][0] / 0x000B)
[null @ 094e8940] Invalid stream specifier: v:0?.
    Last message repeated 1 times


any ideas?

[mvallevand]

The command lines aren't mine they are want sub uses but I think if you eliminate -codec:v:0 h264_qsv after the -i you aren't using h/w encoding.

That error was the same one you got in the NextPVR log

Martin

[aderlopas]

The command lines aren't mine they are want sub uses but I think  if you eliminate -codec:v:0 h264_qsv  after the -i you aren't using h/w encoding.

That error was the same one you got in the NextPVR log

Martin

Thanks Martin, 
I found another command that also works including the Hw decoder switch:


"C:\Program Files\NPVR\Other\ffmpeg.exe" -init_hw_device qsv=hw  -f rawvideo -pix_fmt yuv420p -s:v 2560x1440 -i "http://127.0.0.1:8866/live?channeloid=7562&transcoder=3f149498-ce76-492c-a394-c0b2ab103364&client=5c53419a-db74-43eb-b730-b60c7506a7e8" -c:v h264_qsv -b:v 5M -f null NUL

Of course I am clueless of what that one does and if it gives any hint on how to modify NextPVR configuration to enable HW transcoding....


Output:


libavutil 56. 31.100 / 56. 31.100
libavcodec 58. 54.100 / 58. 54.100
libavformat 58. 29.100 / 58. 29.100
libavdevice 58. 8.100 / 58. 8.100
libavfilter 7. 57.100 / 7. 57.100
libswscale 5. 5.100 / 5. 5.100
libswresample 3. 5.100 / 3. 5.100
libpostproc 55. 5.100 / 55. 5.100
Input #0, rawvideo, from 'http://127.0.0.1:8866/live?channeloid=7562&transcoder=3f149498-ce76-492c-a394-c0b2ab103364&client=5c53419a-db74-43eb-b730-b60c7506a7e8':
Duration: N/A, start: 0.000000, bitrate: 1105920 kb/s
Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 2560x1440, 1105920 kb/s, 25 tbr, 25 tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (h264_qsv))
Press [q] to stop, [?] for help
Output #0, null, to 'NUL':
Metadata:
encoder : Lavf58.29.100
Stream #0:0: Video: h264 (h264_qsv), nv12, 2560x1440, q=-1--1, 5000 kb/s, 25 fps, 25 tbn, 25 tbc
Metadata:
encoder : Lavc58.54.100 h264_qsv
Side data:
cpb: bitrate max/min/avg: 0/0/5000000 buffer size: 0 vbv_delay: -1
frame= 4 fps=0.2 q=51.0 Lsize=N/A time=00:00:00.12 bitrate=N/A speed=0.00542x
video:2618kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Exiting normally, received signal 2.

[mvallevand]

That is not going to be complete but does it need these two

-f rawvideo -pix_fmt yuv420p

Martin

[aderlopas]

That is not going to be complete but does it need these two

-f rawvideo -pix_fmt yuv420p

Martin

If I remove: -pix_fmt yuv420p

It still works:


libavutil      56. 31.100 / 56. 31.100
  libavcodec    58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter    7. 57.100 /  7. 57.100
  libswscale      5.  5.100 /  5.  5.100
  libswresample  3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
Input #0, rawvideo, from 'http://127.0.0.1:8866/live?channeloid=7562&transcoder=3f149498-ce76-492c-a394-c0b2ab103364&client=5c53419a-db74-43eb-b730-b60c7506a7e8':
  Duration: N/A, start: 0.000000, bitrate: 1105920 kb/s
    Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 2560x1440, 1105920 kb/s, 25 tbr, 25 tbn, 25 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (h264_qsv))
Press [q] to stop, [?] for help
Output #0, null, to 'NUL':
  Metadata:
    encoder        : Lavf58.29.100
    Stream #0:0: Video: h264 (h264_qsv), nv12, 2560x1440, q=-1--1, 5000 kb/s, 25 fps, 25 tbn, 25 tbc
    Metadata:
      encoder        : Lavc58.54.100 h264_qsv
    Side data:
      cpb: bitrate max/min/avg: 0/0/5000000 buffer size: 0 vbv_delay: -1
frame=    5 fps=0.2 q=51.0 Lsize=N/A time=00:00:00.16 bitrate=N/A speed=0.00543x
video:2916kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown


But if I remove: -f rawvideo

Then it errors out:

libavutil      56. 31.100 / 56. 31.100
  libavcodec    58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter    7. 57.100 /  7. 57.100
  libswscale      5.  5.100 /  5.  5.100
  libswresample  3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
Option video_size not found.


I hope that makes sense.