Re: [FFmpeg-user] Reliable audio capture method on windows ? (stereo mix does not exist on most computers)

On Mon, Nov 7, 2022 at 11:17 PM Joe Smithy wrote: > > Hi, > > I need a way to capture output audio that works reliably on most computers > without having to know anything about the state of said computer. > > Searching for ffmpeg how to capture desktop audio only returns variants of > > -f dshow

Re: [FFmpeg-user] RTMP speed vlue never reaches 1 (100%), streamign fail in short time

Maybe the network can't keep up with the bandwidth required? If it says dropping that's not fatal FWIW. On Tue, Jun 28, 2022 at 8:06 AM Lordrak wrote: > > Hello, > > I am trying streaming rtpm using ffmpeg but i have few problems. FPS has > never reach 25fps, only 21 for example. So stream

Re: [FFmpeg-user] Hauppauge WinTV-7164 Analog Composite/S-Video Capture

> BUG: The device specific URLS provided by ffmpeg dshow "-list_devices" for > this > Hauppauge provided some extremely length device URLs that were apparently not > recognized by the dshow video= and audio= options. Examples please? :) ___ ffmpeg-user

Re: [FFmpeg-user] ffmpeg combining live video from 3 cameras

"Maybe" with avisynth and a special input, but in general donations welcome to make the dshow module able to do this :) On Mon, Jul 18, 2022 at 10:35 PM ashwin Nair wrote: > > Hi All, > > I have 3 USB cameras streaming video at a specific resolution. I am trying > to merge the videos together

Re: [FFmpeg-user] MPEG2 Consistent/Same Bit Rate When Deinterlacing

ity human movements/exercises. Shrugs. I may still perform some test using the "-bufsize" option. Any feedback would be great to hear on this. The media is private VHS recorded events, captured using S-Video cable and a Hauppauge capture card. Roger > On Tue, May 17,

[FFmpeg-user] MPEG2 Consistent/Same Bit Rate When Deinterlacing

es, is there a naming standard specified for the deinterlaced video file? eg. file_name-int.mts and file_name-deint.mts? Roger ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above

Re: [FFmpeg-user] Difference between FFmpeg Formats/Containers MP4 and H264

now correctly using ffmpeg for h264/mp4 videos! Always knew h264 was a codec, until seeing the "-f h264" option within ffmpeg manual. Now I know "-f h264" for video only streams, likely security video without audio? Roger _

Re: [FFmpeg-user] Difference between FFmpeg Formats/Containers MP4 and H264

>MP4 can contain a variety of streams, including h264. If you specify h264, >you just have a raw h264 video stream, that's it. I've always used -f h264 until I ran into Hauppauge WinTV Version 10 using: ffmpeg -i "[SOURCE_FILE]" -f mp4 -vcodec libx264 -preset ultrafast -profile:v main -acodec

[FFmpeg-user] Difference between FFmpeg Formats/Containers MP4 and H264

are the differences between the following? $ ffmpeg -i video-in.ts -f mp4 -vcodec libx264 -preset ultrafast -profile:v main -acodec aac video-out.mp4 $ ffmpeg -i video-in.ts -f h264 -vcodec libx264 -preset ultrafast -profile:v main -acodec aac video-out.mp4 Roger

Re: [FFmpeg-user] Hauppauge WinTV-7164 Analog Composite/S-Video Capture

Small correction on this, as users might obtain a not playable video/container files from my prior incomplete instructions. Use .avi container instead of .yuv! c:\ ffmpeg -f dshow -crossbar_audio_input_pin_number 5 -crossbar_video_input_pin_number 2 -i video="Hauppauge WinTV-7164 Analog

Re: [FFmpeg-user] Hauppauge WinTV-7164 Analog Composite/S-Video Capture

ely length device URLs that were apparently not recognized by the dshow video= and audio= options. Reference: FFmpeg Devices Documentation - dshow https://ffmpeg.org/ffmpeg-devices.html#dshow > On Tue, May 03, 2022 at 01:43:29PM -0400, Roger wrote: > >I've found, after searching Go

Re: [FFmpeg-user] Hauppauge WinTV-7164 Analog Composite/S-Video Capture

e "-f v4l2" on Linux. - Forwarded message from Roger - Subject: Hauppauge WinTV-7164 Analog Composite/S-Video Capture Date: Sat, 30 Apr 2022 14:50:31 -0400 From: Roger To: ffmpeg-user@ffmpeg.org Seems I'm plagued by the same bug as described here: https://stackoverflow.co

[FFmpeg-user] Hauppauge WinTV-7164 Analog Composite/S-Video Capture

Seems I'm plagued by the same bug as described here: https://stackoverflow.com/questions/19113197/ffmpeg-directshow-capture-2-pins Hauppauge WinTV-7164 Analog Composite/S-Video Capture Using this device trying to capture composite/s-video from VCR/VHS media. dshow device: "Hauppauge WinTV-7164

Re: [FFmpeg-user] Fluorescent White Balance Video Filters

Chapter 2.28 uses filter_complex without white spaces or colons? $ ffmpeg -i 20220421_163910-meet.mp4 -i image_with_clut-meet-edited-clut.png -filter_complex [0]eq=brightness=0.06[a];[a][1]haldclut -y 20220421_163910-meet-edited.mp4 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from

Re: [FFmpeg-user] Fluorescent White Balance Video Filters

> On Wed, Apr 20, 2022 at 07:35:22AM +0200, Michael Koch wrote: > >You can make your own LUT, as described in chapter 2.28 in my book. >-- Extract one frame from your video. >-- Insert a haldclut in a corner of the image, or use xstack to attach it to >the side. >-- Use the program of your choice

Re: [FFmpeg-user] Issues deinterlacing DirectShow input with ffplay

Without yadif it comes in at 59.94i ? On Sat, Apr 23, 2022 at 1:36 PM Alex wrote: > > On Tuesday, April 19th, 2022 at 2:03 AM, Roger Pack > wrote: > > Can you replicate it not using dshow? > > Not in any way that I know of. I recorded raw output from the capture

Re: [FFmpeg-user] Fluorescent White Balance Video Filters

d when using my Nikon D5600 when taking raw photos and attaining similar results to it's Capture NX-D/Studio. I've flagged this Email and will hopefully return to it when I get more free time. I waste a full day on these larger tasks, especially on first time workflows. Don't worry, I did figure-ou

Re: [FFmpeg-user] Fluorescent White Balance Video Filters

> On Tue, Apr 19, 2022 at 06:32:39PM +, Carl Zwanzig wrote: >On 4/19/2022 11:07 AM, Roger wrote: >> I noticed the colorcorrect filter, for use with augmenting the Red and Blue >> channels. > >Touching on that- in most video systems green is the fixed* level and R/B are

Re: [FFmpeg-user] Fluorescent White Balance Video Filters

> On Tue, Apr 19, 2022 at 08:25:17PM +0200, Michael Koch wrote: >Am 19.04.2022 um 03:34 schrieb Roger: >> I'm not finding much about fixing video having incorrect white space, more >> specifically video with incorrect or forgotten fluorescent white balance >>

Re: [FFmpeg-user] Fluorescent White Balance Video Filters

For those wondering about the fluorescent color settings, for filtering different standard fluorescent lighting scenarios within photography or videos: Color temperature white points Wikipedia https://en.wikipedia.org/wiki/Template:Color_temperature_white_points This includes my video

Re: [FFmpeg-user] Issues deinterlacing DirectShow input with ffplay

On Mon, Apr 11, 2022 at 2:50 PM Alex wrote: > > On Sunday, April 10th, 2022 at 1:18 AM, Roger Pack > wrote: > > Input frame rate is still the same both ways? > > Yes, 29.97 fps either way (didn't realize that it's covered in the video; > the log files should have ever

Re: [FFmpeg-user] Change device setting from CLI?

On Sun, Apr 10, 2022 at 7:28 AM Steve Russell wrote: > > I bought an HD webcam during the pandemic and it's been pretty good except > the colours were a bit off. I finally decided to try and do something about > it. The app I use most with it (Zoom) doesn't offer any way to tweak the > camera

[FFmpeg-user] Fluorescent White Balance Video Filters

gle search, as users are always mucking-up the white balance settings while video recording or taking photos, unless using a color/gray card. Roger signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.

Re: [FFmpeg-user] Issues deinterlacing DirectShow input with ffplay

Input frame rate is still the same both ways? On Fri, Aug 13, 2021 at 10:06 PM Alex via ffmpeg-user wrote: > > I'm using ffplay as a live preview for my capture card, and I'm trying to use > the yadif filter in mode 1 (send_field) to deinterlace the 59.94i input to > 59.94 fps. > > Using this

Re: [FFmpeg-user] ADD REAL TIME STAMP TO RTSP STREAM SEGMENT

On Fri, Apr 17, 2020 at 5:38 PM Michael Glenn Williams wrote: > > We have interest in being able to read timestamps in protocol headers also. > > Do we have a doc that specifies which protocols in the video stream ffmpeg > supports with a timecode, and what format of the timecode is? Probably

Re: [FFmpeg-user] ADD REAL TIME STAMP TO RTSP STREAM SEGMENT

On Tue, Sep 3, 2019 at 3:01 PM Alejandro Escudero wrote: > > Hi, > > I am trying to get a RTSP stream from an IP Camera and save that stream as > several MP4 segments, but i need that each file segment name gets the real > time stamp of the video stream. (If I use the -strftime 1, it gets the

Re: [FFmpeg-user] delay time in live ultrasound converter

On Thu, Aug 22, 2019 at 3:16 PM Michael Koch wrote: > > Hello Paul, > > > ffplay and using pipe gives you huge delay. By using mpv and filtergraph > > directly you would get much lesser delay. > > Default delay introduced by this filter is the one set by win_size in > > number of samples, which

Re: [FFmpeg-user] DVD EIA-608 to ASS from stdin with custom style

Does it use cc_dec for the decoder? On Fri, Sep 20, 2019 at 12:06 AM CGar wrote: > > When extracting EIA-608 captions from a DVD to an ASS file I am > unsure how to specify the style. I've seen snippets online about a > force_style option but it seems to be about hardcoding them or > specifying

Re: [FFmpeg-user] Ffmpeg is a Windows codec?

On Thu, Sep 19, 2019 at 11:37 AM jamie marchant wrote: > > Is their a Windows codec available? I want to play Indeo video 3 files, > which FFPlay can do but I want to play it through 'Video for > Windows"(Windows NT/10 version). That way I can run an old piece of > multimedia software. possibly

Re: [FFmpeg-user] "Invalid argument" when running ffmpeg.exe with a pipe as video input

Same version of ffmpeg works on other computers? I suppose you could drill into the code and try and see what it's doing with pipes... On Fri, Oct 18, 2019 at 8:02 AM Alessandro Santos wrote: > > I am creating a c# application to record videos H264. > > The workflow of my application is like

Re: [FFmpeg-user] screen cast windows 10 desktop with audio

Screen cast it to where? On Mon, Mar 16, 2020 at 1:52 PM Lance Bermudez wrote: > > How do i screen cast a windows 10 desktop with audio? > > PS C:\Users\lance> ffmpeg -list_devices true -f dshow -i dummy > > ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg > developers >

Re: [FFmpeg-user] Unable To Transcode 8 sources simultaneously Real Time In One Instance

Yeah if you are exhausting a huge buffer like that it means you are getting wy behind in the real time aspect, yes? On Mon, May 13, 2019 at 4:50 PM Gabriel Balaich wrote: > > > > > 2G seems like a very large buffer... > > > > Even when in the context of attempting to transcode 9k worth of

Re: [FFmpeg-user] Detect Frozen video

On Wed, Nov 28, 2018 at 4:46 AM José María Infanzón wrote: > > Hi All, I'm streaming a live channel and I want to use ffmpeg to monitor > the stream, what I need to check is when the image is frozen. Is there a > way yo achieve this? I've read that I can use blend function, but not sure > how.

Re: [FFmpeg-user] Unable To Transcode 8 sources simultaneously Real Time In One Instance

-rtbufsize 2147.48M 2GB? maybe it's just filling right up... On Mon, Jan 14, 2019 at 12:10 PM Gabriel Balaich wrote: > > I've decided to post this same question on Superuser in an attempt to get > more eyes on the issue: >

Re: [FFmpeg-user] does ffmpeg support ffserver

It lists a few streaming options here https://trac.ffmpeg.org/wiki/StreamingGuide FWIW. On Sat, Apr 6, 2019 at 8:21 AM qw wrote: > > Hi, > > > Thanks for your help. > > > Have you used python-librtmp to transfer rtmp stream? > > > Thanks > > > Regards > > > Andrew > > At 2019-04-01 06:13:19,

Re: [FFmpeg-user] "DirectShow video devices (some may be both video and audio devices)"

DirectShow video devices (some may be both video and audio devices) maybe? I think you can see the pins if you run with -loglevel verbose good luck! On Mon, Apr 29, 2019 at 8:00 PM Gabriel Balaich wrote: > > Quick question regarding calling devices via dshow in FFmpeg, > > I'm trying to capture

Re: [FFmpeg-user] Cannot receive audio/video from Unreal WebRTC DirectShow Source filter

On Sat, Oct 27, 2018 at 5:54 AM Roger Pack wrote: > > On Thu, Sep 20, 2018 at 12:08 PM Maxim Ershtein wrote: > > > > Hello, > > > > I am trying to record VP9/Opus -encoded live stream into .mkv file. The > > live stream is being encoded by Chrome browser and

Re: [FFmpeg-user] Cannot receive audio/video from Unreal WebRTC DirectShow Source filter

On Thu, Sep 20, 2018 at 12:08 PM Maxim Ershtein wrote: > > Hello, > > I am trying to record VP9/Opus -encoded live stream into .mkv file. The > live stream is being encoded by Chrome browser and sent via WebRTC to > Unreal Media Server. > > Unreal Media Server allows installing WebRTC DirectShow

Re: [FFmpeg-user] Max rtbufsize Via dshow

On Fri, Sep 14, 2018 at 10:33 AM Gabriel Balaich wrote: > > Up until a few days ago I had been running two capture cards, 1x4K card and > 1x1080P card, I would encode both streams with a > GTX 1080 no dropped frames no issues. But just recently I replaced the > 1080P capture card with another 4K

Re: [FFmpeg-user] Reducing Latency while streaming desktop

https://trac.ffmpeg.org/wiki/StreamingGuide#Latency may be of some use to you. On Sat, Aug 25, 2018 at 12:24 PM Thomas Glanzmann wrote: > > Hello, > I would like to use ffmpeg to stream my windows 7 desktop to windows 10 > desktops on the same broadcast domain. Last week I used the following two

Re: [FFmpeg-user] Decoding frames as fast as possible

On Tue, Jul 24, 2018 at 2:50 PM, Évan wrote: > On Mon, Jul 23, 2018 at 8:45 AM, Roger Pack wrote: >> Does ffprobe take 20s? > > I just tested and "ffprobe.exe -show_entries frame=pkt_pts_time > bbb_sunflower_1080p_30fps_normal.mp4" does take time to complete. I a

Re: [FFmpeg-user] Anyone having success capturing hours of 4k video, reliably and with low loss, using ffmpeg?

On Tue, Aug 7, 2018 at 3:15 PM, Gabriel Balaich wrote: >> >> You are missing the question. >> >> I am not asking for help to diagnose that simple experiment. I am asking >> if others have had experience with the top-level goal: capturing hours >> of 4k video, reliably and with low loss, using

Re: [FFmpeg-user] FFplay network stream with low latency

https://trac.ffmpeg.org/wiki/StreamingGuide#Latency may be useful to you... On Sun, Aug 5, 2018 at 7:41 PM, Elliott Balsley wrote: > I discovered an option in picamera python module to include the framerate in > the SPS headers, so now I will use that instead of raspivid. Plus it’s more >

Re: [FFmpeg-user] Anyone having success capturing hours of 4k video, reliably and with low loss, using ffmpeg?

nd storage as >> ffmpeg doesn't need to process nothing and it could be done with any >> stream >> saver program > > > This sounds reassuring, as if this isn't such a hard task after all. But I > don't hear you saying that you know of someone who has done it. > > On

Re: [FFmpeg-user] Decoding frames as fast as possible

Does ffprobe take 20s? On Tue, Jul 3, 2018 at 2:23 AM, Evan wrote: > Hi everyone, > > I'm developping a media player featuring advanced video/frame processing. > To be able to seek to any particular frame, I need to know, for each frame, > its presentation time and if available, if it's a key

Re: [FFmpeg-user] FFMPEG configure FAILD

At the end /tmp/ffconf.QPyKsvYV/test.c:1:23: error: lame/lame.h: No such file or directory you probably need to set CPATH to your include dir and LIBRARY_PATH to your lib dir ref: https://github.com/rdp/ffmpeg-windows-build-helpers/blob/master/cross_compile_ffmpeg.sh#L2140 GL! On Fri, Jul 20,

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

Just enter it manually as you're doing I think it's a signed int. On 3/2/18, Alex P wrote: > Thank you for that suggestion Roger, I can't believe I forgot about the > preset options. > > Executing the following on a RAM disk gets me about .9x performance, letting > me capture

Re: [FFmpeg-user] Support request - configuring ffmpeg for YouTube Live 60fps

On 4/25/18, Stuart Porter wrote: > Hi there, > > Firstly, forgive any rookie mistakes – I’m new here and not a seasoned > support blog user. Neither am I a developer of any sort. > > I’m working with a developer though and we are trying to configure ffmpeg > to stream live from a video capture

Re: [FFmpeg-user] can't capture from audio speakers, but well from microphone

On 3/10/18, Carl Zwanzig wrote: > On 3/10/2018 6:01 AM, Phil Forneur wrote: >> I can't capture from audio speakers, but well from microphone. > > Speakers/audio-out aren't considered an input device. > > If you're trying to capture what's being played out those speakers, you need > software to

Re: [FFmpeg-user] Any Actual Solution to "Past Duration Too Large"?

There are a few tracs on it, and this: https://superuser.com/questions/902661/ffmpeg-past-duration-0-xx-too-large Seems to be a bug somehow to me but I never looked closely enough. On Mon, Apr 16, 2018 at 7:50 PM, Gabriel Balaich wrote: > Hey all, I'm having an issue with the "Past duration

Re: [FFmpeg-user] Encoding 4K 60Hz lossless from a capture card

You are still performing encoding: "(native) -> (h264)" On 12/12/17, Alex Pizzi wrote: > Windows 10 64-bit > Ryzen 7 > GTX 1080 > 32GB RAM > > Hi all, > > I'm trying to encode 4K 30/60Hz video in a lossless format from a 4K > capture card and everything I've tried gives me

Re: [FFmpeg-user] Batch convert JPG to Animated GIF's - Where to start?

Appears ffmpeg can create animated gif's https://stackoverflow.com/questions/3688870/create-animated-gif-from-a-set-of-jpeg-images In terms of a script to pass ffmpeg the right parameters, that's unfortunately, probably on you mate. On 11/17/17, colink wrote: > I have very

Re: [FFmpeg-user] ffmpeg on windows seems to ignore -to

Works in linux? What versions of ffmpeg? On 10/20/17, Kevin Duffey wrote: > Hi all, > So I am using this simple command on Windows 10 (64-bit) command to cut out > a small clip: > ffmpeg -i input.mov -ss 00:18:22.0 -to 00:18:44.0 -c copy clip10.mov > > This

Re: [FFmpeg-user] Take webcam picture with minimal delay

Maybe overwrite a jpg file "over and over" and just grab a copy of it on demand when you need it? On 9/20/17, m...@stefan-kleeschulte.de wrote: > Hi everyone! > > I want to take a picture from a webcam (to send it in a http server's > response). I already found a

Re: [FFmpeg-user] How to have a secure UDP BroadCast

I don't think UDP can have passwords can it? On 10/2/17, hassan shatnawi wrote: > Dears, > > How to have a secure connection with username and password while > broadcasting "UPD" > > I've use this command > > ffmpeg -f dshow -video_size 1280x720 -rtbufsize 702000K -framerate

Re: [FFmpeg-user] Record H264 webcam with DirectShow

hmm wonder what types those pins are broadcasting :| On 7/29/17, Aviv Hurvitz wrote: > Now with debug output: > >>ffmpeg -y -f dshow -video_size 640x480 -vcodec h264 -framerate 30 -report > -loglevel trace -rtbufsize 100M -i video="Microsoft LifeCam Front" -vcodec > copy

Re: [FFmpeg-user] Record H264 webcam with DirectShow

output with -loglevel debug? On 7/28/17, Aviv Hurvitz wrote: > I’m on a Surface Pro 3 running Windows 10. Trying to record an mp4 from a > native H.264 stream. > > The H.264 video sources are on the second “pin” and I suspect that’s the > problem. But the first and second

Re: [FFmpeg-user] Screen Capture - Windows 10

Maybe turn off graphics acceleration for your browser? On 6/1/17, Ron Barnes wrote: > Hello all, > > > > I have been trying for days to figure out how to capture the video from my > desktop and save it as a playable file. I've been successful to a point. > > I am able to

Re: [FFmpeg-user] gdigrab just capturing a still frame when using window title

On 5/12/17, Kenn Sippell wrote: > Hello! I am attempting to use ffmpeg to record some video games. In this > scenario I'm recording Dota 2 from my PC (working great) and from my laptop > (having some problems). > > ffmpeg -f gdigrab -i desktop output.flv > > This command

Re: [FFmpeg-user] Question about CBR bit rate settings

I think you're right, the tutorial is probably outdated. On 4/15/17, Gil Yoder wrote: > According to Korbel in *FFmpeg Basics*, "To set the constant bit rate for > the output, three parameters must have the same value: bitrate (-b option), > minimal rate (-minrate) and

Re: [FFmpeg-user] Unsynced audio while recording from several sources

does async or vsync options help? On 4/4/17, Valeriy Shevchuk wrote: > Hello, everyone. > I'm trying to use FFmpeg to record video and 3 audio sources and use it to > generate 3 different video files - each file should contain the same video > stream but the different

Re: [FFmpeg-user] compile ffmpeg missing Xlib, or indevs is empty

On 1/14/17, 密思刘 wrote: > ffmpeg-3.2.2/b4$../configure --disable-ffplay --disable-ffprobe > --disable-ffserver --disable-doc --disable-htmlpages --disable-manpages > --disable-podpages --disable-txtpages --disable-logging --disable-protocols > --enable-protocol='file,data,pipe'

Re: [FFmpeg-user] Help with -video_size

On 1/6/17, Moritz Barsnick wrote: > On Fri, Jan 06, 2017 at 00:14:31 -0800, Tim Hiles wrote: >> I've tried recording my screen set at 1366 x 768 and specified -video_size >> to 1024x768. The command did create a recording however it did not change >> the size. The output is

Re: [FFmpeg-user] Audio slowly getting out of sync

On 11/21/16, Gabor Alsecz wrote: > Dear All, > > I have an issue when encoding HLS stream from an RTSP mjpeg video stream + > USB audio via dshow. > At the beginning audio & video are in sync but slowly but steadily the > sound drifting out of sync. Video seems faster,

Re: [FFmpeg-user] (no subject)

On 7/15/16, Tim Hiles wrote: > Hi all, > > Seeing odd behavior with screen capture recorder. > > This always works on win 7. No problems. Even when resolution is set to > 1920 x 1080 > > c:\ffmpeg\ffmpeg\bin\ffmpeg.exe -f dshow -i >

Re: [FFmpeg-user] Webcam RTMP stream - video problems

On 6/21/16, hdt1...@tom.com wrote: > Hello, > > I'm trying to capture audio and video from a webcam and stream it via RTMP > to a Red5 media server, where others can then view the live stream. > When I do it from a Flash applet (Publisher Demo from the Red5 > distribution), it

Re: [FFmpeg-user] Help, cannot connect to my webcam (message : Could not RenderStream to connect pins, I/O error)

e- > From: ffmpeg-user [mailto:ffmpeg-user-boun...@ffmpeg.org] On Behalf Of Roger > Pack > Sent: Tuesday, May 10, 2016 10:57 PM > To: FFmpeg user questions <ffmpeg-user@ffmpeg.org> > Subject: Re: [FFmpeg-user] Help, cannot connect to my webcam (message : > Could not Ren

Re: [FFmpeg-user] Using ffmpeg to stream to or from Blackmagic Decklink Card

On 6/13/16, davood afshari wrote: > Hello, > I want to use blackmagic cards with ffmpeg to stream their input but there > is a problem. > When I use "H264 Pro" Encoder as a "decklink" or "dshow" input, I see this > error in command line output of ffmpeg. Device is ok and

Re: [FFmpeg-user] Any way to get better use of the cpu?

On 2/23/16, Carl Eugen Hoyos <ceho...@ag.or.at> wrote: > Roger Pack gmail.com> writes: > >> I'm referring more to the fact that if I output to two >> outputs, from the same ffmpeg instance, in essence, this: >> >> ffmpeg -i input output1 output2 >>

Re: [FFmpeg-user] dvb_teletext -> .srt fails?

On 1/15/16, Marton Balint <c...@passwd.hu> wrote: > > On Fri, 15 Jan 2016, Roger Pack wrote: > >> similar to >> https://lists.ffmpeg.org/pipermail/ffmpeg-user/2015-June/027029.html >> and >> >> https://trac.ffmpeg.org/ticket/3025 >> >> My &

Re: [FFmpeg-user] I can't find any video devices on the Windows 7 source system

igrab and dshow? Let me know if the documentation is still insufficient so I can adjust it. Thanks! > On 05/28/2016 02:38 AM, Roger Pack wrote: >> Did you install a screen capturing dshow device (ex: >> screen-capture-recorder)? >> Also see gdigrab. >> GL! >> >

Re: [FFmpeg-user] I can't find any video devices on the Windows 7 source system

Did you install a screen capturing dshow device (ex: screen-capture-recorder)? Also see gdigrab. GL! On 5/27/16, John Lewis wrote: > I would like to stream a desktop from one computer running Windows 7 to > another to on a LAN running Debian 8 to show an application that is

Re: [FFmpeg-user] nvenc ffmpeg

On Mon, May 16, 2016 at 2:50 AM, Аз Есмь wrote: > i've got the same problem. GeForce GT 610, nVidia driver 361.42, Kubuntu > 16.04. Supported GPUs are listed here: https://developer.nvidia.com/nvidia-video-codec-sdk#gpulist which for GeForce cards can be summarized as "Kepler &

Re: [FFmpeg-user] nvenc ffmpeg

On Sat, May 14, 2016 at 5:36 AM, gofrane wrote: > > ffmpeg -y -i input.mp4 -vcodec nvenc -b:v 5M -acodec copy OUTPUT.mp4* > snip > [nvenc @ 0x2721540] No NVENC capable devices found > This seems like it is the likely error to focus on. Are you sure your NVIDIA GPU has

Re: [FFmpeg-user] Help, cannot connect to my webcam (message : Could not RenderStream to connect pins, I/O error)

can other programs use your lifecam? On 5/10/16, 김찬 wrote: > Thanks Carl, > Here is the output. I gave the recording command (ffmpeg -f dshow -i > video="..." test.mp4) while I was streaming the web cam video using LifeCam > player.(displaying the camera on my notebook). > >

Re: [FFmpeg-user] named pipes ffmpeg

rotocol > parameters to write to this pipe? Does anyone experience with named pipes? > > Kind regards, > > Robin > > -Oorspronkelijk bericht- > Van: ffmpeg-user [mailto:ffmpeg-user-boun...@ffmpeg.org] Namens Roger Pack > Verzonden: dinsdag 3 mei 2016 3:43 > Aa

Re: [FFmpeg-user] screen_capture_recorder to record 2nd monitor

you can use the crop filter or set screen capture recorder boundaries itself (in the registry, see its README). HTH. -roger- On 4/25/16, Tim Hiles <timothyhi...@gmail.com> wrote: > I use exactly what they suggest on the screen_capture_recorder ffmpeg faq > to record desktop. >

Re: [FFmpeg-user] ffmpage win7 screen record cursor is abnormal

So mouse is the wrong size or wrong pointer or what here? On 4/28/16, Ni Wesley wrote: > Hi guys, > > I hit a problem when recording screen on window 7 using ffmpeg. > > Snapshot here: [image: enter image description here] > > > So, you

Re: [FFmpeg-user] named pipes ffmpeg

On 4/29/16, Robin Stevens wrote: > I am having trouble to get ffmpeg write to a named pipe in windows. I know > it's possible to write to a anonymous pipe with the command: > > ffmpeg.exe -vsync passthrough -f dshow -i video="AVerMedia SD 1 > Capture":audio="AVerMedia SD Audio

Re: [FFmpeg-user] Fwd: screen_capture_recorder to record 2nd monitor

You can unsubscribe here: http://ffmpeg.org/mailman/listinfo/ffmpeg-user HTH. -roger- On 4/27/16, G A <glen_alex...@hotmail.com> wrote: > stop sending me this, goddamn this is 6th fucking time. > >> Begin forwarded message: >> >> From: Tim Hiles <timothyhi...@gm

Re: [FFmpeg-user] Blackmagic card issue capturing

On 3/2/16, Christian Bianchini wrote: > I have ran with log level and this is the result when it successfully > capture at 60 FPS: > > frame= 153 fps= 61 q=0.0 size= 51752kB time=00:00:02.33 > bitrate=181487.1kbits > dshow passing through packet of type video size 4147200

Re: [FFmpeg-user] Blackmagic card issue capturing

On 3/1/16, Christian Bianchini wrote: > I have got the ffmpeg version N-78598-g98a0053 and trying to capturing > from a Blackmagic card, which sometimes works and sometimes doesnt. > > ffmpeg.exe -y -f dshow -video_size 1920x1080 -pixel_format uyvy422 >

Re: [FFmpeg-user] Capture Webcam to Broadcasting Program

On 2/16/16, James Stortz wrote: > ​Good day, > > I want to use my c920 in Wirecast on a Windows 8.1 desktop. > > (This was the line of webcams from Logitech that had notorious issues. A > thread pointed out FFmpeg support via DirectShow.) > > I can now successfully

Re: [FFmpeg-user] [ffmpeg + screen-capture-recorder] - Targeting a specific Windows session with the command line ?

gdigrab has a "window" option FWIW On 2/2/16, JuliaM wrote: > Hi > > I'm using ffmpeg + screen-capture-recorder to record my own and student > work. > > For my situation, I use a Remote desktop to follow their work (to resume I > open/use an Admin session on the student

Re: [FFmpeg-user] dshow: Multi channel Video Capture Cards for FFmpeg

It probably will be, if it has normal dshow interfaces (sorry for the late reply). On 10/19/15, Andrew Blake wrote: > Hello experts! > > Sorry i'm a bit of a newbie with ffmpeg so please bare with me! I'm trying > to convert multiple PAL video camera streams to images

[FFmpeg-user] Any way to get better use of the cpu?

s out there as to why it ends up using just 200% cpu? Or any ideas/workarounds to be able to transcode multiple at the same time from the same source and use all the cpu available? Thanks! -roger- ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user

[FFmpeg-user] dvb_teletext -> .srt fails?

2.5M.ts I don't seem to be having much luck (DVBT stream). Any feedback welcome :) -roger- ffmpeg.exe -txt_format text -i c:\users\rdp\Downloads\sbs.2.5M.ts -map 0:i:0x2c -y out.srt ffmpeg version N-77844-g62051f3 Copyright (c) 2000-2016 the FFmpeg developers built with gcc 5.3.0 (GCC) con

Re: [FFmpeg-user] Capture Webcam and also display on screen.

I can think of two options, one is the "sdl out" filter, the other is to split your output and write to .jpg files (you can overwrite a single jpeg file) and display that as it changes. GL! Note there is no "sdl audio out" filter (as far as I'm aware). On 3/29/15, kevin

Re: [FFmpeg-user] speed display during encode

bits/s speed=7.98x What would a minimalistic one look like I wonder if we can pare it right down. Regardless, patches welcome. Cheers! -roger- ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user

Re: [FFmpeg-user] Low latency H.264 streaming with ffmpeg

On 1/13/16, Greger Burman wrote: > Ok, so the ffmpeg based player is buffering frames somewhere even though > I'm telling it not to. This happens with h264 video but not with mjpeg. > That suggests to me that the latency is caused by either the h264 decoder > or the mpegts

Re: [FFmpeg-user] speed display during encode

On 1/11/16, Elliott Balsley wrote: > Sometime between July and December 2015, it seems ffmpeg has added a > "speed" display measured as a multiple of the framerate. Is it possible to > either hide this or hide the fps display? It seems redundant to show > both. I run

Re: [FFmpeg-user] Low latency H.264 streaming with ffmpeg

On 1/12/16, Kenneth Fields wrote: > yes, we’re having the same issue now. > but -benchmark also really degrades the stream. > Is there any options possible for -benchmark (moderate, strict)? what type of degredation? are you using udp? are you including audio?

Re: [FFmpeg-user] Low latency H.264 streaming with ffmpeg

On 1/12/16, Greger Burman wrote: > I would like to hear from anyone who has experience with low latency video > streaming and ffmpeg. > > In my application I take video from a PCIe capture device and stream live > over network. The end to end latency must be below 200ms otherwise

Re: [FFmpeg-user] Mpeg PID vs. program id?

On 1/7/16, Andy Furniss <adf.li...@gmail.com> wrote: > Roger Pack wrote: >> Hello. I'm trying to understand how MPEG mapping terminology works. >> >> Given this type of input: >> $ ffmpeg -i INPUT >> ... >> Input #0, mpegts, from 'INPUT': >>

[FFmpeg-user] flame about confusing command line options.

...the command line syntax is confusing to people just getting started with FFmpeg. After using FFmpeg for like 5 years I'm only finally figuring it out myself LOL. Cheers, no offense intended of course, just a gripe. -roger- ___ ffmpeg-user mailing lis

Re: [FFmpeg-user] null video sink

On 12/29/15, Nicolas George <geo...@nsup.org> wrote: > Le nonidi 9 nivôse, an CCXXIV, Roger Pack a écrit : >> Could anyone be kind enough to show me how to use this in a filtergraph? >> When I try to, it seems to still output and encode: > >> Stream mapping: >>

[FFmpeg-user] some containers require "monotonically increasing" RAM expected or leak (mp4, nut)?

; container is better (uses far less RAM but still eventually would run out), "mpeg" container, however, doesn't seem to use much RAM at all (doesn't grow). So I assume mpeg is a good option in this case, or possibly the segment muxer so output video files don't end

Re: [FFmpeg-user] EPG stream

mple file that contains EPG in it :) -roger- ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user

[FFmpeg-user] null video sink

552 fps=460 q=-1.0 Lsize=1107kB time=00:00:37.27 bitrate= 243.2kbits/s Thank you. -roger- ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user

Re: [FFmpeg-user] help with live capture and audio sync issues

I'm almost tempted to come up with a "sync" filter (unless one already exists) that would force things back into sync (live streams that is) On 9/3/15, Ricardo Kleemann wrote: > Hi, > > I have very inconsistent results with doing live capture. Sometimes the > resulting

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