Re: [FFmpeg-user] kmsgrab on Intel 8th generation aka h/w accelerated screen capture

2018-06-25 Thread Kai Hendry
Thanks for the sudo setcap cap_sys_admin+ep /path/to/ffmpeg tip. It indeed works. https://github.com/kaihendry/recordmydesktop2.0/commits/kms Unfortunately kmsgrab seems to lag for me: https://s.natalian.org/2018-06-26/1529976937.mp4 And sometimes is unreliable:

Re: [FFmpeg-user] x11grab segfault when display is closed

2018-06-25 Thread Carl Eugen Hoyos
2018-06-22 17:03 GMT+02:00, Matt Garman : > # ./ffmpeg -an -f x11grab -framerate 10 -video_size 1280x1024 -i :13 > /tmp/cap.mp4 > > If I stop ffmpeg before that display is closed, I get a nice video, exactly > as expected. > > However, if ffmpeg is still running when the display (:13 in the above

Re: [FFmpeg-user] kmsgrab on Intel 8th generation aka h/w accelerated screen capture

2018-06-25 Thread Mark Thompson
On 25/06/18 10:42, Moritz Barsnick wrote: > On Mon, Jun 25, 2018 at 09:10:29 +0800, Kai Hendry wrote: >> However since kmsgrab requires CAP_SYS_ADMIN as it points out to its >> friendly documentation >> https://www.ffmpeg.org/ffmpeg-devices.html#kmsgrab I believe I need to >> run it with `sudo`. >

Re: [FFmpeg-user] fMP4 generation speed

2018-06-25 Thread Carl Zwanzig
On 6/25/2018 2:41 PM, Carl Eugen Hoyos wrote: 2018-06-25 15:02 GMT+02:00, Ronak: 1. Apple does not create temp files Isn't that generally a disadvantage? Why would it be (not creating temp files)? Seems sensible from here. A better question is why, it appears, is ffmpeg making temp files

Re: [FFmpeg-user] fMP4 generation speed

2018-06-25 Thread Phil Rhodes
On Monday, 25 June 2018, 22:41:42 BST, Carl Eugen Hoyos wrote: >2018-06-25 15:02 GMT+02:00, Ronak : >> 1. Apple does not create temp files >Isn't that generally a disadvantage? In an environment where people may be dealing with very large amounts of data, creating temp files is bad.

Re: [FFmpeg-user] Adaptive Streaming between heaac and lcaac

2018-06-25 Thread Carl Eugen Hoyos
2018-06-25 14:37 GMT+02:00, Ronak : > Another interesting thing I saw is that their generated fMP4s don't include > sidx boxes, since the stream is audio only created from an AAC file. > Why does ffmpeg include sidx boxes? Can those be removed? You can test "-movflags -global_sidx" Carl Eugen

Re: [FFmpeg-user] fMP4 generation speed

2018-06-25 Thread Carl Eugen Hoyos
2018-06-25 15:02 GMT+02:00, Ronak : > 1. Apple does not create temp files Isn't that generally a disadvantage? Carl Eugen ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link

Re: [FFmpeg-user] fMP4 generation speed

2018-06-25 Thread Carl Eugen Hoyos
2018-06-22 21:53 GMT+02:00, Ronak : > > >> On Jun 20, 2018, at 4:48 PM, Carl Eugen Hoyos wrote: >> >> 2018-06-20 18:37 GMT+02:00, Ronak : >> >>> That command took the following time: >>> >>> real3m19.316s >>> user3m14.730s >>> sys 0m1.830s >>> >>> I'm curious about your thoughts

Re: [FFmpeg-user] Adaptive Streaming between heaac and lcaac

2018-06-25 Thread Moritz Barsnick
On Mon, Jun 25, 2018 at 08:37:05 -0400, Ronak wrote: > >>> HEAACv2 44khz/32kbps > >>> HEAACv2 44/64 > >>> LCAAC 44/128 > >>> LCAAC 44/256 > >>> LCAAC 44/320 > I ran Apple's HLS mediafilesegmenter tool, and I can confirm that they set > 1024 for the defaultSampleDurations in all moof segments for

[FFmpeg-user] Hls Variable Substitution

2018-06-25 Thread Ronak Patel
Hi, I was curious if ffmpeg has plans to support hlsv8 generation. The ability to do variable substitution in manifest is huge and can really help reduce manifest sizes. Ronak Sent from my iPhone ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org

Re: [FFmpeg-user] fMP4 generation speed

2018-06-25 Thread Ronak
> On Jun 23, 2018, at 12:07 AM, Ronak wrote: > > > >> On Jun 22, 2018, at 7:59 PM, Ronak Patel wrote: >> >> >>> On Jun 22, 2018, at 5:03 PM, Carl Zwanzig wrote: >>> On 6/22/2018 1:37 PM, Ronak wrote: We have audio files that are more than 100 hours long, and we need them

Re: [FFmpeg-user] Adaptive Streaming between heaac and lcaac

2018-06-25 Thread Ronak
> On Jun 22, 2018, at 4:45 PM, Ronak wrote: > > > >>> Hi, >>> >>> We are trying to setup an adaptive stream across two heaac streams and >>> higher order lcaac ones. >>> >>> So we’d have something like so: >>> >>> HEAACv2 44khz/32kbps >>> HEAACv2 44/64 >>> LCAAC 44/128 >>> LCAAC 44/256

Re: [FFmpeg-user] kmsgrab on Intel 8th generation aka h/w accelerated screen capture

2018-06-25 Thread Moritz Barsnick
On Mon, Jun 25, 2018 at 09:10:29 +0800, Kai Hendry wrote: > However since kmsgrab requires CAP_SYS_ADMIN as it points out to its > friendly documentation > https://www.ffmpeg.org/ffmpeg-devices.html#kmsgrab I believe I need to > run it with `sudo`. Actually, the documentation says: "If you don’t

Re: [FFmpeg-user] Upscaling SD 4x3 to FullHD 16x9 - Aspect Ratio problem

2018-06-25 Thread Christoph Gerstbauer
Gyan Doshi thank you, that worked fine! 2018-06-22 15:09 GMT+02:00 Gyan Doshi : > > > On 22-06-2018 06:13 PM, Christoph Gerstbauer wrote: > > >> CommandLineOutput: >> >> ffmpeg -i "F:\scaler test\_5sec.avi" -vf "crop=720:576:0:32, setfield=tff, >> yadif=1:0:0, scale=-1:1080,

[FFmpeg-user] "Smoothing" RTSP over wlan

2018-06-25 Thread Michael Fritscher
Good morning, Scenario: Using RTSP over wlan to get video from a webcam, using the lib itself. the WLAN has the characteristic to "pause" for e.g. 300 ms, and send all the data at once. This makes the stream not exactly smooth. Is there a way to tell the libav to buffer / wait 500 ms and let

Re: [FFmpeg-user] kmsgrab on Intel 8th generation aka h/w accelerated screen capture

2018-06-25 Thread Kai Hendry
On Mon, 25 Jun 2018 at 09:49, robertlazarski wrote: > That command worked for me though of course without your external dep. You managed to record sound with your kmsgrab? Not sure what you mean by external dep! ___ ffmpeg-user mailing list