Re: [FFmpeg-user] VAAPI decoding/encoding of several video streams in parallel

2016-12-20 Thread Moritz Barsnick
On Tue, Dec 20, 2016 at 22:21:12 +0400, Anton Sviridenko wrote: > http://ffmpeg.org/pipermail/ffmpeg-user/2016-December/034530.html [...] > 3) Can I use single hwdevice and vaapi_context instances for all > streams or there should be own instance for each decoded/encoded > stream? You'll have

Re: [FFmpeg-user] Why is length and bitrate zero?

2016-12-20 Thread Moritz Barsnick
On Tue, Dec 20, 2016 at 13:31:25 +1300, Michael Heuberger wrote: > But regarding the length, that still doesn't look right. Can you check > the lengths again with your random ones? The lengths all look correct in smplayer (I didn't check their actual lengths), but so does the output from your

Re: [FFmpeg-user] VAAPI decoding/encoding of several video streams in parallel

2016-12-20 Thread Mark Thompson
On 20/12/16 18:21, Anton Sviridenko wrote: > I want to use hardware acceleration for processing multiple realtime > videostreams (coming over RTSP). > I've read this thread - > http://ffmpeg.org/pipermail/ffmpeg-user/2016-December/034530.html > > and have some questions related to scaling this

[FFmpeg-user] Generate/Playback Interlaced (1080i) video with lavfi.

2016-12-20 Thread Matthias, Thomas
Hi, I’m trying to generate some smtpebars with a script, and it works fine for 1080p video. However, I’ve tried numerous combinations for generating 1080i video using the –vf tinterlace filter. For example, if I want to generate 1080i50 video, do I use 25000/1000 as the framerate, and then

Re: [FFmpeg-user] VP9 to HEVC hdr demo conversion?

2016-12-20 Thread traycold
Carl Eugen Hoyos-2 wrote > So what is missing from the FFmpeg mkv muxer? I can't answer to your question. I just wanted to share my experience: using the command mentioned in my first mail in this thread I was not able to correctly encode the HDR video in object, while using the command

Re: [FFmpeg-user] cutoff argument not passed to libmp3lame

2016-12-20 Thread Bernhard Döbler
Am 19.12.2016 um 01:56 schrieb Carl Eugen Hoyos: 2016-12-18 23:58 GMT+01:00 Bernhard Döbler : I looked into ffmpeg documentation and saw there's an argument "-cutoff" that should do, what "-lowpass" does in LAME. Why do you think so / where does it say so in the

[FFmpeg-user] Fwd: [Libav-user] MP4 concatenation with MP42 major_brand

2016-12-20 Thread black copper
-- Forwarded message -- From: Nicolas George Date: Tue, Dec 20, 2016 at 2:12 PM Subject: Re: [Libav-user] MP4 concatenation with MP42 major_brand To: libav-u...@ffmpeg.org, ffmpeg-user@ffmpeg.org Le decadi 30 frimaire, an CCXXV, black copper a écrit : > I have

[FFmpeg-user] VAAPI decoding/encoding of several video streams in parallel

2016-12-20 Thread Anton Sviridenko
I want to use hardware acceleration for processing multiple realtime videostreams (coming over RTSP). I've read this thread - http://ffmpeg.org/pipermail/ffmpeg-user/2016-December/034530.html and have some questions related to scaling this everything to several video streams: 1) Is it possible

Re: [FFmpeg-user] aevalsrc question

2016-12-20 Thread Muhammad Faiz
On 12/20/16, Adam Puckett wrote: > On 12/20/16, Muhammad Faiz wrote: >> On 12/20/16, Adam Puckett wrote: >>> On 12/19/16, Nicolas George wrote: Oh, good catch. I should have remembered this task

Re: [FFmpeg-user] aevalsrc question

2016-12-20 Thread Adam Puckett
On 12/20/16, Muhammad Faiz wrote: > On 12/20/16, Adam Puckett wrote: >> On 12/19/16, Nicolas George wrote: >>> Oh, good catch. I should have remembered this task needed a primitive >>> function, not just a multiplication. >>> >>>

Re: [FFmpeg-user] High memory usage when merging videos

2016-12-20 Thread Muhammad Faiz
On 12/20/16, Muhammad Faiz wrote: > On 12/20/16, Jonathan Girven wrote: >>> How if you move your multiple inputs into movie sources inside >>> filter_complex? >> >> Sorry, I looked at the documentation here: >> >>

Re: [FFmpeg-user] High memory usage when merging videos

2016-12-20 Thread Muhammad Faiz
On 12/20/16, Jonathan Girven wrote: >> How if you move your multiple inputs into movie sources inside >> filter_complex? > > Sorry, I looked at the documentation here: > > https://ffmpeg.org/ffmpeg-filters.html#Video-Sources > > but couldn't see how to grab a file

Re: [FFmpeg-user] High memory usage when merging videos

2016-12-20 Thread Jonathan Girven
> How if you move your multiple inputs into movie sources inside filter_complex? Sorry, I looked at the documentation here: https://ffmpeg.org/ffmpeg-filters.html#Video-Sources but couldn't see how to grab a file with this. Do you have an example? ___

Re: [FFmpeg-user] High memory usage when merging videos

2016-12-20 Thread Jonathan Girven
> The changes I am working on would fix the "bufferqueue overflow, > dropping" problems that occur with slightly unbalanced streams, for > example audio streams with tiny frames where you can get a hundred or so > frames in one go. Thanks for clarifying that Nicolas. > But it would not fix the

Re: [FFmpeg-user] MP4 concatenation with MP42 major_brand

2016-12-20 Thread Nicolas George
Le decadi 30 frimaire, an CCXXV, black copper a écrit : > I have MP4 source videos, that contain: > > video: H264 > audio: G.711 (mulaw) > > I want to use concatenation on source videos to get one MP4 file. > > I used concat filter by first creating a list: mylist.txt file as follows: > > file