Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

[Carl Eugen Hoyos]

2018-02-13 1:45 GMT+01:00 Andy Furniss :
> Carl Eugen Hoyos wrote:
>
>> Is there really a hardware encoder that supports lossless encoding?
>
> https://developer.nvidia.com/nvidia-video-codec-sdk#NVENCFeatures

Thank you!

Carl Eugen
___
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-user

To unsubscribe, visit link above, or email
ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

[Andy Furniss]

Carl Eugen Hoyos wrote:


Is there really a hardware encoder that supports lossless encoding?


https://developer.nvidia.com/nvidia-video-codec-sdk#NVENCFeatures

Doesn't mention rgb though.
___
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-user

To unsubscribe, visit link above, or email
ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

[Andy Furniss]

Alex P wrote:

Hi James,

ffmpeg -f dshow -video_size 3840x2160 -framerate 6/1001 -rtbufsize 21 
-pixel_format bgr24 -i video="MZ0380 PCI, Analog 01 Capture" -c:v h264_nvenc 
-preset lossless -f null -
Gives me the same error


Maybe it doesn't do rgb24 lossless - you should paste full output of 
ffmpeg and not top post on this list.



ffmpeg -f dshow -video_size 3840x2160 -framerate 6/1001 -rtbufsize 21 
-pixel_format bgr24 -i video="MZ0380 PCI, Analog 01 Capture" -c:v rawvideo -f 
null -
Gets me nearly x1 performance when executing from a ram disk but

ffmpeg -f dshow -video_size 3840x2160 -framerate 6/1001 -rtbufsize 21 
-pixel_format bgr24 -i video="MZ0380 PCI, Analog 01 Capture" -c:v rawvideo 
raw.nut
Only gets me x0.5 and the buffer overflows.


The device that raw.nut is written to would need to take 1.5 
gigabytes/sec to get full speed.


___
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-user

To unsubscribe, visit link above, or email
ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

[James Girotti]

>
> ffmpeg -f dshow -video_size 3840x2160 -framerate 6/1001 -rtbufsize
> 21 -pixel_format bgr24 -i video="MZ0380 PCI, Analog 01 Capture"
> -c:v h264_nvenc -preset lossless -f null -
> Gives me the same error
>

That's surprising, I can get about 200fps using file-based/ramdisk "-c:v
h264_nvenc -preset -lossless". Have you also tried "-c:v hevc_nvenc -preset
lossless"? What's the encoding FPS that you're getting? You technically
shouldn't be able get much more than 60fps as that's what your capture card
is supplying. Can you monitor the "Video Engine Utilization" during
encoding? In linux it's listed in the nvidia-settings GUI or "nvidia-smi
dmon" on the CLI will show enc/dec%.


> ffmpeg -f dshow -video_size 3840x2160 -framerate 6/1001 -rtbufsize
> 21 -pixel_format bgr24 -i video="MZ0380 PCI, Analog 01 Capture"
> -c:v rawvideo -f null -
> Gets me nearly x1 performance when executing from a ram disk but
>
> ffmpeg -f dshow -video_size 3840x2160 -framerate 6/1001 -rtbufsize
> 21 -pixel_format bgr24 -i video="MZ0380 PCI, Analog 01 Capture"
> -c:v rawvideo raw.nut
> Only gets me x0.5 and the buffer overflows.


> Is there a way of accelerating rawvideo decoding? Would using my
> colleagues 1080 make a difference? Thanks.


I think raw-video is already decoded. So no way/need to accelerate that.
You might try a different pix_fmt from your capture card while using
hw-encoding, but you'd have to test. I don't know the internals, i.e. when
the pixel format is converted during hw-encoding. So it might make a
difference.

Changing pixel formats might be a concern if you are trying to achieve
"100% lossless" capture. I've read that yuv444p should be sufficient
colorspace for bgr24.

There isn't a lot of info out there on encoding speed differences based on
GPU models. It's a complex subject, but from what I have observed the ASIC
is tied to the GPU clock (I have observed that GPU clock speed increases as
ASIC load increases). If that's true, then a GTX 1080, with it's higher max
clock, could have faster encoding, but I have no data to back that up only.
___
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-user

To unsubscribe, visit link above, or email
ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] FFmpeg hanging on complex filter

[Carl Eugen Hoyos]

2018-02-13 0:46 GMT+01:00 Jesse Koegler :

> ffmpeg version 3.4.1 Copyright (c) 2000-2017 the FFmpeg developers

Please test current FFmpeg git head.

Carl Eugen
___
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-user

To unsubscribe, visit link above, or email
ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

[FFmpeg-user] FFmpeg hanging on complex filter

[Jesse Koegler]

Hello all,

Recently I upgraded my FFMPEG version to the latest release. In doing so, a
command I previously used does not work anymore.

Here is the command

ffmpeg.exe -y -i  -filter_complex
"[0:v]trim=start_frame=0:end_frame=100,setpts=PTS-STARTPTS[a0];
[0:v]trim=start_frame=100:end_frame=242,setpts=PTS-STARTPTS[a1];
[a0]fade=in:0:12, fade=out:88:12[b0]; [a1]fade=in:0:12,
fade=out:130:12[b1]; [b0[b1]concat[out0]" -map [out0] -map 0:a -c:a copy  

Previously this would return a video with some fading at the specified
frames, but now the ffmpeg process just hangs. Here is the console output
using latest release version

C:\WINDOWS\system32>ffmpeg.exe -y -i "C:\Users\test2_FADED.mp4"
-filter_complex
"[0:v]trim=start_frame=0:end_frame=100,setpts=PTS-STARTPTS[a0];
[0:v]trim=start_
frame=100:end_frame=242,setpts=PTS-STARTPTS[a1]; [a0]fade=in:0:12,
fade=out:88:1
2[b0]; [a1]fade=in:0:12, fade=out:130:12[b1]; [b0][b1]concat[out0]" -map
[out0]
-map 0:a -c:a copy  "C:\Users\test2.mp4"
ffmpeg version 3.4.1 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 7.2.0 (GCC)
  configuration: --enable-gpl --enable-version3 --enable-sdl2
--enable-bzlib --e
nable-fontconfig --enable-gnutls --enable-iconv --enable-libass
--enable-libblur
ay --enable-libfreetype --enable-libmp3lame --enable-libopenjpeg
--enable-libopu
s --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora
--ena
ble-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp
--enable-lib
x264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma
--enable-z
lib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-cuda
--enable-c
uvid --enable-d3d11va --enable-nvenc --enable-dxva2 --enable-avisynth
--enable-l
ibmfx
  libavutil  55. 78.100 / 55. 78.100
  libavcodec 57.107.100 / 57.107.100
  libavformat57. 83.100 / 57. 83.100
  libavdevice57. 10.100 / 57. 10.100
  libavfilter 6.107.100 /  6.107.100
  libswscale  4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc54.  7.100 / 54.  7.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Users\test2_FADED.mp4':
  Metadata:
major_brand : isom
minor_version   : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf56.26.101
  Duration: 00:00:09.68, start: 0.00, bitrate: 147 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p,
640x480 [
SAR 1:1 DAR 4:3], 143 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
Metadata:
  handler_name: VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono,
fltp,
 95 kb/s (default)
Metadata:
  handler_name: SoundHandler
Stream mapping:
  Stream #0:0 (h264) -> trim
  Stream #0:0 (h264) -> trim
  concat -> Stream #0:0 (libx264)
  Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[libx264 @ 04ad0200] using SAR=1/1
[libx264 @ 04ad0200] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
FMA3
 BMI2 AVX2
[libx264 @ 04ad0200] profile High, level 3.0
[libx264 @ 04ad0200] 264 - core 152 r2851 ba24899 - H.264/MPEG-4 AVC codec
- Cop
yleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1
ref=3 deb
lock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00
mixed_ref=1 m
e_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1
chro
ma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0
decimate=1 i
nterlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2
b_adapt=1
b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25
scenec
ut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60
qpmin=
0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'C:\Users\Public\Documents\NAC Compressed Video
Recordings\te
st2.mp4':
  Metadata:
major_brand : isom
minor_version   : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.83.100
Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p,
640x480 [SA
R 1:1 DAR 4:3], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
Metadata:
  encoder : Lavc57.107.100 libx264
Side data:
  cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono,
fltp,
 95 kb/s (default)
Metadata:
  handler_name: SoundHandler

It basically just hangs there, chugging along at 30% cpu usage but not ever
completing.

Here is the console output from the older working version

C:\WINDOWS\system32>ffmpeg.exe -y -i "C:\Users\test2_FADED.mp4"
-filter_complex
"[0:v]trim=start_frame=0:end_frame=100,setpts=PTS-STARTPTS[a0];
[0:v]trim=start_
frame=100:end_frame=242,setpts=PTS-STARTPTS[a1]; [a0]fade=in:0:12,
fade=out:88:1
2[b0]; [a1]fade=in:0:12, fade=out:130:12[b1]; [b0][b1]concat[out0]" -map
[out0]
-map 0:a -c:a copy  "C:\Users\test2.mp4"
ffmpeg version N-76704-ge9aea6d Copyright (c) 2000-2015 the FFmpeg
developers
  built with 

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

[Alex P]

Hi James,

I get the same issue with this command:

ffmpeg -f dshow -video_size 3840x2160 -framerate 6/1001 -rtbufsize 
21 -pixel_format bgr24 -i video="MZ0380 PCI, Analog 01 Capture" -c:v 
h264_nvenc -preset lossless -f null -

Is there a way to accelerate the decoding of rawvideo?

ffmpeg -f dshow -video_size 3840x2160 -framerate 6/1001 -rtbufsize 
21 -pixel_format bgr24 -i video="MZ0380 PCI, Analog 01 Capture" -c:v 
rawvideo -f null -
Gets me nearly 1x performance. 

-Original Message-
From: ffmpeg-user [mailto:ffmpeg-user-boun...@ffmpeg.org] On Behalf Of James 
Girotti
Sent: Monday, February 12, 2018 3:31 PM
To: FFmpeg user questions
Subject: Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

Hi Alex,

I looked at your attached log. It appears to me that using libx265, your 
computer cannot encode fast enough. It appears your computer is encoding about 
10.5 fps, but your input is about 60fps. So a lot of frames get buffered every 
second while they're waiting to be encoded. This leads to the full rtbuffer and 
then dropped frames. You could try increasing your rtbufsize, but using libx265 
your computer will not be able to keep up and eventually the buffer will fill 
and frames will be dropped.


> Any help would be appreciated. 1080p capture right to rawvideo is perfect.
> I
> would like to use NVENC in lossless mode if anyone has experience with 
> that.
>

If you look at the fps that you can do at 1080p, it will be much higher and 
that's why you don't get buffer over-runs.

I also have a GTX 1050 Ti that I use for encoding. It will do hevc lossless at 
about 150fps, input size 3840x2160@60hz (all in RAM):

ffmpeg -hwaccel cuvid -c:v hevc_cuvid -i /dev/shm/foo.4k60.hevc.mkv -c:v 
hevc_cuvid -preset lossless /dev/shm/test.mkv

Based on my limited test, your GPU should be able to keep up and not drop 
frames, YMMV. I'm not sure what impact you will have because your input is 
raw-video (positive or negative). You shouldn't include "-hwaccel cuvid" on 
your cli, because you won't be doing hw-decoding/transcoding.

HTH,
-J
___
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-user

To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with 
subject "unsubscribe".

___
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-user

To unsubscribe, visit link above, or email
ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

[Alex P]

Hi James,

ffmpeg -f dshow -video_size 3840x2160 -framerate 6/1001 -rtbufsize 
21 -pixel_format bgr24 -i video="MZ0380 PCI, Analog 01 Capture" -c:v 
h264_nvenc -preset lossless -f null -
Gives me the same error

ffmpeg -f dshow -video_size 3840x2160 -framerate 6/1001 -rtbufsize 
21 -pixel_format bgr24 -i video="MZ0380 PCI, Analog 01 Capture" -c:v 
rawvideo -f null -
Gets me nearly x1 performance when executing from a ram disk but

ffmpeg -f dshow -video_size 3840x2160 -framerate 6/1001 -rtbufsize 
21 -pixel_format bgr24 -i video="MZ0380 PCI, Analog 01 Capture" -c:v 
rawvideo raw.nut
Only gets me x0.5 and the buffer overflows. 

Is there a way of accelerating rawvideo decoding? Would using my colleagues 
1080 make a difference? Thanks.

-Alex P

-Original Message-
From: ffmpeg-user [mailto:ffmpeg-user-boun...@ffmpeg.org] On Behalf Of James 
Girotti
Sent: Monday, February 12, 2018 3:31 PM
To: FFmpeg user questions
Subject: Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

Hi Alex,

I looked at your attached log. It appears to me that using libx265, your 
computer cannot encode fast enough. It appears your computer is encoding about 
10.5 fps, but your input is about 60fps. So a lot of frames get buffered every 
second while they're waiting to be encoded. This leads to the full rtbuffer and 
then dropped frames. You could try increasing your rtbufsize, but using libx265 
your computer will not be able to keep up and eventually the buffer will fill 
and frames will be dropped.


> Any help would be appreciated. 1080p capture right to rawvideo is perfect.
> I
> would like to use NVENC in lossless mode if anyone has experience with 
> that.
>

If you look at the fps that you can do at 1080p, it will be much higher and 
that's why you don't get buffer over-runs.

I also have a GTX 1050 Ti that I use for encoding. It will do hevc lossless at 
about 150fps, input size 3840x2160@60hz (all in RAM):

ffmpeg -hwaccel cuvid -c:v hevc_cuvid -i /dev/shm/foo.4k60.hevc.mkv -c:v 
hevc_cuvid -preset lossless /dev/shm/test.mkv

Based on my limited test, your GPU should be able to keep up and not drop 
frames, YMMV. I'm not sure what impact you will have because your input is 
raw-video (positive or negative). You shouldn't include "-hwaccel cuvid" on 
your cli, because you won't be doing hw-decoding/transcoding.

HTH,
-J
___
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-user

To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with 
subject "unsubscribe".

___
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-user

To unsubscribe, visit link above, or email
ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

[Carl Eugen Hoyos]

2018-02-12 16:37 GMT+01:00 Alex P :

> Command: ffmpeg -f dshow -video_size 3840x2160 -framerate 59.9 -rtbufsize
> 21 -pixel_format bgr24 -i video="MZ0380 PCI, Analog 01 Capture" -c:v
> libx265 -x265-params lossless=1 out1.avi

Unrelated:
-framerate 59.9 is most likely wrong, should be 6/1001

> frame=   74 fps= 10 q=-0.0 Lsize=N/A time=00:00:01.43 bitrate=N/A speed=0.202x

The encoder is (far!) too slow, you could try with -vcodec ffv1,
but you most likely will have to either use a significantly more
expensive CPU, or a lower resolution or a lower frame rate.
If you have sufficiently fast disks, you can try to save rawvideo
(and re-encode later).

[...]

> Any help would be appreciated. 1080p capture right to rawvideo is perfect. I
> would like to use NVENC in lossless mode if anyone has experience with that.

Is there really a hardware encoder that supports lossless encoding?
If yes, why did you use software encoding at all above?

Carl Eugen
___
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-user

To unsubscribe, visit link above, or email
ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

[James Girotti]

Hi Alex,

I looked at your attached log. It appears to me that using libx265, your
computer cannot encode fast enough. It appears your computer is encoding
about 10.5 fps, but your input is about 60fps. So a lot of frames get
buffered every second while they're waiting to be encoded. This leads to
the full rtbuffer and then dropped frames. You could try increasing your
rtbufsize, but using libx265 your computer will not be able to keep up and
eventually the buffer will fill and frames will be dropped.


> Any help would be appreciated. 1080p capture right to rawvideo is perfect.
> I
> would like to use NVENC in lossless mode if anyone has experience with
> that.
>

If you look at the fps that you can do at 1080p, it will be much higher and
that's why you don't get buffer over-runs.

I also have a GTX 1050 Ti that I use for encoding. It will do hevc lossless
at about 150fps, input size 3840x2160@60hz (all in RAM):

ffmpeg -hwaccel cuvid -c:v hevc_cuvid -i /dev/shm/foo.4k60.hevc.mkv -c:v
hevc_cuvid -preset lossless /dev/shm/test.mkv

Based on my limited test, your GPU should be able to keep up and not drop
frames, YMMV. I'm not sure what impact you will have because your input is
raw-video (positive or negative). You shouldn't include "-hwaccel cuvid" on
your cli, because you won't be doing hw-decoding/transcoding.

HTH,
-J
___
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-user

To unsubscribe, visit link above, or email
ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

[Reto Kromer]

William Caulfield wrote:

>haven't used Windows / Directshow for a few years, but back in
>the day I would have attempted this using VirtualDub and
>HuffYUV. I believe that HuffYUV is available for ffmpeg, but
>can't say that I've ever tried it.

Indeed, FFmpeg's flavour of HuffYUV is even better than the
original one!

There is a fork of VirtualDub by Peter Bubestinger-Steindl
which allow to capture in Matroska/FFV1.

Hope this helps! Reto

___
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-user

To unsubscribe, visit link above, or email
ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

[Alex P]

I've tried all manner of encoders but get the same buffer error. I've actually 
gotten a 64-bit fork of VirtualDub to work and capture everything but it 
occasionally drops frames and I like the CLI of ffmpeg. 

I guess I could use the VD CLI. Can anyone advise? I could use Linux but I'd 
rather not as I know this company's Linux drivers are less developed than their 
Windows drivers. 

-Original Message-
From: ffmpeg-user [mailto:ffmpeg-user-boun...@ffmpeg.org] On Behalf Of William 
Caulfield
Sent: Monday, February 12, 2018 1:11 PM
To: FFmpeg user questions
Subject: Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

On Mon, Feb 12, 2018 at 7:37 AM, Alex P  wrote:

> Windows 10
>
> Intel i7-8700K
>
> GTX 1050Ti
>
> 16GB DDR4
>
> SATA Samsung Evo
>
>
>
> I'm using a Yuan 4K60 capture card with the end goal of capturing the 
> video in a lossless format. I need it to be lossless as the clips will 
> be used to test hardware h264 encoders.
>
>
>
> Product page:
> http://www.yuan.com.tw/products/capture/4k/sc560n1_lv_hdmi2.htm
>
> Directshow is supported.
>
>
>
> Command: ffmpeg -f dshow -video_size 3840x2160 -framerate 59.9 
> -rtbufsize
> 21 -pixel_format bgr24 -i video="MZ0380 PCI, Analog 01 Capture"
> -c:v
> libx265 -x265-params lossless=1 out1.avi
>
>
>
> I have also tried writing to null: ffmpeg -f dshow -video_size 
> 3840x2160 -framerate 59.9 -rtbufsize 21 -pixel_format bgr24 -i 
> video="MZ0380 PCI, Analog 01 Capture" -c:v libx265 -x265-params 
> lossless=1 -f null -
>
>
>
> I get the same error (see attatched) and I have to force quit by 
> pressing Ctrl-C a bunch. Error also occurs if I write to a RAM disk.
>
>
>
> [dshow @ 01dda20ca3a0] real-time buffer [MZ0380 PCI, Analog 01 
> Capture] [video input] too full or near too full (63% of size: 
> 21 [rtbufsize parameter])! frame dropped!
>
>
>
> Any help would be appreciated. 1080p capture right to rawvideo is perfect.
> I
> would like to use NVENC in lossless mode if anyone has experience with 
> that.
>
>
>
>

 haven't used Windows / Directshow for a few years, but back in the day I would 
have attempted this using VirtualDub and HuffYUV. I believe that HuffYUV is 
available for ffmpeg, but can't say that I've ever tried it.




-- 

*William Caulfield *| *ContentBridge Systems* 
___
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-user

To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with 
subject "unsubscribe".

___
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-user

To unsubscribe, visit link above, or email
ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

[William Caulfield]

On Mon, Feb 12, 2018 at 7:37 AM, Alex P  wrote:

> Windows 10
>
> Intel i7-8700K
>
> GTX 1050Ti
>
> 16GB DDR4
>
> SATA Samsung Evo
>
>
>
> I'm using a Yuan 4K60 capture card with the end goal of capturing the video
> in a lossless format. I need it to be lossless as the clips will be used to
> test hardware h264 encoders.
>
>
>
> Product page:
> http://www.yuan.com.tw/products/capture/4k/sc560n1_lv_hdmi2.htm
>
> Directshow is supported.
>
>
>
> Command: ffmpeg -f dshow -video_size 3840x2160 -framerate 59.9 -rtbufsize
> 21 -pixel_format bgr24 -i video="MZ0380 PCI, Analog 01 Capture"
> -c:v
> libx265 -x265-params lossless=1 out1.avi
>
>
>
> I have also tried writing to null: ffmpeg -f dshow -video_size 3840x2160
> -framerate 59.9 -rtbufsize 21 -pixel_format bgr24 -i video="MZ0380
> PCI, Analog 01 Capture" -c:v libx265 -x265-params lossless=1 -f null -
>
>
>
> I get the same error (see attatched) and I have to force quit by pressing
> Ctrl-C a bunch. Error also occurs if I write to a RAM disk.
>
>
>
> [dshow @ 01dda20ca3a0] real-time buffer [MZ0380 PCI, Analog 01 Capture]
> [video input] too full or near too full (63% of size: 21 [rtbufsize
> parameter])! frame dropped!
>
>
>
> Any help would be appreciated. 1080p capture right to rawvideo is perfect.
> I
> would like to use NVENC in lossless mode if anyone has experience with
> that.
>
>
>
>

 haven't used Windows / Directshow for a few years, but back in the day I
would have attempted this using VirtualDub and HuffYUV. I believe that
HuffYUV is available for ffmpeg, but can't say that I've ever tried it.




-- 

*William Caulfield *| *ContentBridge Systems*
___
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-user

To unsubscribe, visit link above, or email
ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

[FFmpeg-user] 4K 60Hz Directshow Video Capture

[Alex P]

Windows 10

Intel i7-8700K

GTX 1050Ti

16GB DDR4

SATA Samsung Evo

 

I'm using a Yuan 4K60 capture card with the end goal of capturing the video
in a lossless format. I need it to be lossless as the clips will be used to
test hardware h264 encoders. 

 

Product page:
http://www.yuan.com.tw/products/capture/4k/sc560n1_lv_hdmi2.htm

Directshow is supported.

 

Command: ffmpeg -f dshow -video_size 3840x2160 -framerate 59.9 -rtbufsize
21 -pixel_format bgr24 -i video="MZ0380 PCI, Analog 01 Capture" -c:v
libx265 -x265-params lossless=1 out1.avi

 

I have also tried writing to null: ffmpeg -f dshow -video_size 3840x2160
-framerate 59.9 -rtbufsize 21 -pixel_format bgr24 -i video="MZ0380
PCI, Analog 01 Capture" -c:v libx265 -x265-params lossless=1 -f null -

 

I get the same error (see attatched) and I have to force quit by pressing
Ctrl-C a bunch. Error also occurs if I write to a RAM disk.

 

[dshow @ 01dda20ca3a0] real-time buffer [MZ0380 PCI, Analog 01 Capture]
[video input] too full or near too full (63% of size: 21 [rtbufsize
parameter])! frame dropped!

 

Any help would be appreciated. 1080p capture right to rawvideo is perfect. I
would like to use NVENC in lossless mode if anyone has experience with that.

 

 

C:\Users\alex.p\Desktop\ffmpeg\bin>ffmpeg -f dshow -video_size 3840x2160 
-framerate 59.9 -rtbufsize 21 -pixel_format bgr24 -i video="MZ0380 PCI, 
Analog 01 Capture" -c:v libx265 -x265-params lossless=1 -f null -
ffmpeg version git-2017-12-22-e3b2c85 Copyright (c) 2000-2017 the FFmpeg 
developers
  built with gcc 7.2.0 (GCC)
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib 
--enable-fontconfig --enable-gnutls --enable-iconv --enable-libass 
--enable-libbluray --enable-libfreetype --enable-libmp3lame 
--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg 
--enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr 
--enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack 
--enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 
--enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab 
--enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex 
--enable-amf --enable-cuda --enable-cuvid --enable-d3d11va --enable-nvenc 
--enable-dxva2 --enable-avisynth --enable-libmfx
  libavutil  56.  6.100 / 56.  6.100
  libavcodec 58.  8.100 / 58.  8.100
  libavformat58.  3.100 / 58.  3.100
  libavdevice58.  0.100 / 58.  0.100
  libavfilter 7.  7.100 /  7.  7.100
  libswscale  5.  0.101 /  5.  0.101
  libswresample   3.  0.101 /  3.  0.101
  libpostproc55.  0.100 / 55.  0.100
Input #0, dshow, from 'video=MZ0380 PCI, Analog 01 Capture':
  Duration: N/A, start: 433919.57, bitrate: N/A
Stream #0:0: Video: rawvideo, bgr24, 3840x2160, 59.90 fps, 59.90 tbr, 
1k tbn, 1k tbc
Stream mapping:
  Stream #0:0 -> #0:0 (rawvideo (native) -> hevc (libx265))
Press [q] to stop, [?] for help
x265 [info]: HEVC encoder version 2.6+13-6b079854e56e
x265 [info]: build info [Windows][GCC 7.2.0][64 bit] 8bit
x265 [info]: using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3 SSE4.2 AVX FMA3 
BMI2 AVX2
x265 [info]: Main 4:4:4 profile, Level-8.5 (Main tier)
x265 [info]: Thread pool created using 12 threads
x265 [info]: Slices  : 1
x265 [info]: frame threads / pool features   : 3 / wpp(34 rows)
x265 [info]: Coding QT: max CU size, min CU size : 64 / 8
x265 [info]: Residual QT: max TU size, max depth : 32 / 1 inter / 1 intra
x265 [info]: ME / range / subpel / merge : hex / 57 / 2 / 2
x265 [info]: Keyframe min / max / scenecut / bias: 25 / 250 / 40 / 5.00
x265 [info]: Cb/Cr QP Offset : 6 / 6
x265 [info]: Lookahead / bframes / badapt: 20 / 4 / 2
x265 [info]: b-pyramid / weightp / weightb   : 1 / 1 / 0
x265 [info]: References / ref-limit  cu / depth  : 3 / on / on
x265 [info]: Rate Control: Lossless
x265 [info]: tools: rd=3 psy-rd=2.00 rskip signhide tmvp strong-intra-smoothing
x265 [info]: tools: lslices=8 deblock sao
Output #0, null, to 'pipe:':
  Metadata:
encoder : Lavf58.3.100
Stream #0:0: Video: hevc (libx265), gbrp, 3840x2160, q=2-31, 59.90 fps, 
59.90 tbn, 59.90 tbc
Metadata:
  encoder : Lavc58.8.100 libx265
[dshow @ 01dda20ca3a0] real-time buffer [MZ0380 PCI, Analog 01 Capture] 
[video input] too full or near too full (63% of size: 21 [rtbufsize 
parameter])! frame dropped!
[dshow @ 01dda20ca3a0] real-time buffer [MZ0380 PCI, Analog 01 Capture] 
[video input] too full or near too full (66% of size: 21 [rtbufsize 
parameter])! frame dropped!
[dshow @ 01dda20ca3a0] real-time buffer [MZ0380 PCI, Analog 01 Capture] 
[video input] too full or near too full (69% of size: 21 [rtbufsize 
parameter])! frame dropped!
[dshow @ 01dda20ca3a0] real-time buffer [MZ0380 PCI, 

Re: [FFmpeg-user] Is there an input or output file-size limit that FFmpeg can handle ?

[Carl Eugen Hoyos]

2018-02-12 7:45 GMT+01:00 Gyan Doshi :
> On 2/12/2018 11:47 AM, Shyam Sundar wrote:
>
>> Can you please share if you have any data on it OR the size of the largest
>> video you have ever tried with FFmpeg ?
>
>  Output filesize limit is the max value of UINT64 i.e. 17179869183 GB.

While this is (at least approximately) true for 64bit, I don't think it is
true for all builds.

> Actual limit subject to filesystem limit as well.

This is definitely true.

Some formats do not support arbitrary file sizes, for some implementations,
bugs regarding very large files were found in the past, reports welcome!

(An example for such a limitation are jpeg2000 images > 4G iirc.)

Carl Eugen
___
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-user

To unsubscribe, visit link above, or email
ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] mpdecimate and setpts

[Carl Eugen Hoyos]

2018-02-12 7:57 GMT+01:00 Chen Fisher :
> I'm using mpdecimate to remove similar frames:
> ffmpeg -i in.mp4 -vf mpdecimate out.mp4
>
> But the ending result has the same number of frames as the original video
> file (although smaller file size).
>
> When using mpdecimate with setpts, the ending result has indeed smaller
> frame count and smaller file size than before.
> BUT, it will also change the time and "skip" those similar frames. I'm
> looking for a way to remove frames but still have the time as the original.
> So the "duplicate" frame will actually be played for the duration of all
> removed duplicate frames.
>
> ffmpeg -i in.mp4 -vf "mpdecimate,setpts=N/FRAME_RATE/TB" out.mp4

You cannot combine mpdecimate and mov/mp4 output in a useful way
because our mov/mp4 muxer only supports constant frame rate, this
is a known limitation of FFmpeg.
Try mkv.

Carl Eugen
___
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-user

To unsubscribe, visit link above, or email
ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] Stuck with error when adding two subtitles

[Carl Eugen Hoyos]

2018-02-10 22:13 GMT+01:00 Carl Eugen Hoyos :
> 2018-02-10 16:13 GMT+01:00 ffm...@bechhold.de :
>
>> ffmpeg -i movie-in.mp4 -i sub-alien.srt -i sub-full.srt -map 0:v -map
>> 0:a -map 1 -map 2 -c:v copy -c:a copy -c:s mov_text -disposition:s:0
>> forced -metadata:s:s:0 language=eng -metadata:s:s:0 title="Alien only"
>> -metadata:s:s:1 language=eng -metadata:s:s:1 title="English" movie-out.mp4
>
> Please test current FFmpeg git head (nothing else is supported here)
> and please provide the command line including the complete, uncut
> console output.
>
> Does it work if you mux to mkv?

This somehow implied that you remove "-scodec mov_text"

Carl Eugen
___
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-user

To unsubscribe, visit link above, or email
ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".