[FFmpeg-user] How can I pipe frames from FFmpeg to jpegtran?

I need to optimize the jpegs I am getting out of ffmpeg, and so I'd like to pipe the outputted frames to jpegtran. I'd like to have something like the following command line, but obviously it won't work as is. So how can I pipe MULTIPLE video frames to jpegtran to have them optimized? I know thi

Re: [FFmpeg-user] VLS - ffmpeg which can stream better

On Sun, Aug 21, 2016 at 10:03:19 +0200, Peter White wrote: > > What is VLS? > > That'd be the VideoLAN Server, I guess. It used to be kind of the > counterpart of VLC, the client. Maybe it still is, but its use seems to > be discouraged: > https://www.videolan.org/vlc/streaming.html Ah, I remembe

Re: [FFmpeg-user] Find out supported pixel formats for a codec

Hi Kieran, On Sun, Aug 21, 2016 at 11:09 AM, Kieran O Leary wrote: > Hi, > > On Sun, Aug 21, 2016 at 8:52 AM, Robert Krüger > wrote: > > Hi, > > > > is there a systematic way to find out supported pixel formats for a codec > > (or filter) on the command line? I only found ffmpeg -pix_fmts but t

[FFmpeg-user] Troubles when recording audio and video, between minute 15 and minute 30

Dear all, I am using the ffmpeg (version n3.0) to record, on the fly, audio and video. The audio is from an usb microphone and the video is from a logitech webcam. The audio and the video are mixed and encoded in an output file. The ffmpeg binaries have been generated by this command: ./configure

[FFmpeg-user] RTSP to MKV: incorrect duration

I am trying to write RTSP stream to .mkv container this way (Linux): ffmpeg -hide_banner -loglevel error -i %RTSP_Source% -c copy -map 0 -f segment -segment_time 3600 -segment_atclocktime 1 -segment_format mkv -strftime 1 "%PATH%/%Y-%m-%d_%H-%M-%S.mkv" Everything seems OK, except time labels. M

Re: [FFmpeg-user] VLS - ffmpeg which can stream better

Hello Peter, and Moritz, I found out, how to stream to nginx server. Thank you for your information. Is it possible, to cut / transcode the video stream, so that the traffic is not to high. So, from input "800x600" to output "640x480" as example? I have the problem with VLC, that you have to p

Re: [FFmpeg-user] Find out supported pixel formats for a codec

Hi, On Sun, Aug 21, 2016 at 8:52 AM, Robert Krüger wrote: > Hi, > > is there a systematic way to find out supported pixel formats for a codec > (or filter) on the command line? I only found ffmpeg -pix_fmts but that is > the global list of all known pixel formats. > Yes. ffmpeg -h encoder=codecna

Re: [FFmpeg-user] Predicting Transcoding Parameters

> -Original Message- > From: ffmpeg-user [mailto:ffmpeg-user-boun...@ffmpeg.org] On Behalf Of > s00b4u 4u > Sent: 20 August 2016 06:08 > To: FFmpeg user questions > Subject: [FFmpeg-user] Predicting Transcoding Parameters > > Hi, > > I want to understand if there is any way to predict the

Re: [FFmpeg-user] VLS - ffmpeg which can stream better

Hi! 20.08.2016 16:43, Moritz Barsnick: Hi Jens, On Fri, Aug 19, 2016 at 17:23:03 +0200, Jens Kallup wrote: What is VLS? That'd be the VideoLAN Server, I guess. It used to be kind of the counterpart of VLC, the client. Maybe it still is, but its use seems to be discouraged: https://www.videol

[FFmpeg-user] Find out supported pixel formats for a codec

Hi, is there a systematic way to find out supported pixel formats for a codec (or filter) on the command line? I only found ffmpeg -pix_fmts but that is the global list of all known pixel formats. Thanks, Robert ___ ffmpeg-user mailing list ffmpeg-user