[FFmpeg-user] hls_size
I want to stream my capture card using HLS. I get the input well and everything seems to bo fine. The problem is the latency. I want to lessen the chunk sizes to 3 seconds or less, and put less than 5 chunks in every list. But when I run the ffmpeg as below: ffmpeg -re -i rtmp://serveradress/live/channel -codec copy -map 0 -f segment -segment_list playlist.m3u8 -delete -segment_list_flags +live -segment_time 3 out%03d.ts the generated segments are much longer than 3 seconds. I think the problem is with iFrames. How should I fix that issue? ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] Questions about readout important metadata from DPX files ("logarthmic/linear") and recreate DPX with same metadata
Hi Christoph, > On Mar 14, 2015, at 7:35 AM, Christoph Gerstbauer > wrote: > >> ISTR that imagemagick/graphicsmagick have quite good DPX metadata extraction >> >> "$ [gm] identify -verbose some-file.dpx" >> >> see:- >> >> http://www.imagemagick.org/script/motion-picture.php >> >> and >> http://www.graphicsmagick.org/motion-picture.html#dpx-attributes >> >> Note that there are both film and television frame rate values that may >> not match! >> > Hello Tim! > > thank you, thats a very good tool, especially graphics magick :) > > But I can find just one frameratein the list: > > dpx:mp.frame.rate > > > Where is the second one you were talking about? You can identify the source of the frame rate with a bit more clarity with mediainfo if run like mediainfo --inform="Details;1" file.dpx Dave Rice ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] Questions about readout important metadata from DPX files ("logarthmic/linear") and recreate DPX with same metadata
ISTR that imagemagick/graphicsmagick have quite good DPX metadata extraction "$ [gm] identify -verbose some-file.dpx" see:- http://www.imagemagick.org/script/motion-picture.php and http://www.graphicsmagick.org/motion-picture.html#dpx-attributes Note that there are both film and television frame rate values that may not match! Hello Tim! thank you, thats a very good tool, especially graphics magick :) But I can find just one frameratein the list: dpx:mp.frame.rate Where is the second one you were talking about? Best Regards Christoph ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] [help] how to encode mpeg2 stream with pixel_format = yuv422?
Hi linxs, On Sat, Mar 14, 2015 at 16:06:48 +0800, linxs wrote: > I try command like this: > ffmpeg -i .m2ts -c:v mpeg2video -pixel_format "yuv422p" out.mpg It helps if you show us the complete, uncut console output from your command. > but the output pixel format is always "yuv420". "-pixel_format" is an input option. You are looking for -pix_fmt. BTW, I see "-pixel_format" only documented for git, rawvideo, avfoundation and dshow. Why does ffmpeg not warn for other input formats/devices? Moritz ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
[FFmpeg-user] [help] how to encode mpeg2 stream with pixel_format = yuv422?
I try command like this: ffmpeg -i .m2ts -c:v mpeg2video -pixel_format "yuv422p" out.mpg but the output pixel format is always "yuv420". How to ? thanks! ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] Decklink Capture
Reuben Martin gmail.com> writes: > On Wednesday, March 11, 2015 07:14:31 AM Carl Eugen Hoyos wrote: > > http://ffmpeg.org/ffmpeg-devices.html#decklink-1 > > Is this page particularly difficult to find? > > And now that I go back and check, I see that there > is a section for decklink input that either I > totally missed I fixed the order, thank you for the report! Carl Eugen ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
