Re: [FFmpeg-user] Set keyframe interval raw video

ate 3000k -bufsize 6000k output.mp4 > > -g should set the keyframe interval. > > Carl Eugen > Carl, Why we should be careful with the fps filter? What's wrong with it? Anatol ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] theoretical concurrency limitations

On Fri, Sep 16, 2016 at 3:31 PM, Carl Eugen Hoyos <ceffm...@gmail.com> wrote: > 2016-09-16 14:19 GMT+02:00 Anatol <anatol2...@gmail.com>: > > > The high thread count caused significant quality reduction > > with older ffmpeg/x264 encoders. > > So this

Re: [FFmpeg-user] theoretical concurrency limitations

Sorry for the top-post, unintentionally. The high thread count caused significant quality reduction with older ffmpeg/x264 encoders. I'll run some tests with the newer versions and post the results. In most cases there is no reason for multi threaded decoding. On the other hand 4 threaded x264

Re: [FFmpeg-user] aes-ctr cipher

It works only with MP4 On Tue, Aug 9, 2016 at 4:31 PM, Saelis wrote: > Hi, > > I see that aes-ctr support is included in FFmpeg since commit > 23ac99dc17b0c4ff43bb56c1f8cbe7feb34bada5 > (https://ffmpeg.org/pipermail/ffmpeg-cvslog/2015-December/096510.html). > > I can't find

Re: [FFmpeg-user] [CVBR] How to generate .MP4 or .TS files

May be MP4/MPEG-TS do not support Opus audio? Kindly, send the command line that u used end the output printout. Kindly. On Wed, May 4, 2016 at 2:53 PM, Karthik Gowda wrote: > All, > > I have generated a .MP4 or .TS with CVBR[constrained]bitrate mode, Kindly > help me

Re: [FFmpeg-user] Interlaced x264

tinterlace,fieldorder=tff" -flags +ilme+ildct -threads 4 -y BBB_30sec_interlaced.ts Do u know whether there are any quality or other issues with 'tinterlace' filter? Thanks, Anatol ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user

Re: [FFmpeg-user] Interlaced x264

Kim, I used that flag ("-flags +ilme+ildct"), but got the results that u can see above ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user

Re: [FFmpeg-user] Interlaced x264

. Do u know how can I make it encoded in a way that it will be identified as TFF? Anatol ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user

Re: [FFmpeg-user] Interlaced x264

Field First' scan order, but my main concern that those files have different structure, therefore the file that I generated won't comply with the sample file that I got. Anatol ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman

[FFmpeg-user] Interlaced x264

1200k -maxrate 4000k -bufsize 8000k -rc_eq 'blurCplx^(1-qComp)' -aspect 4:3 -top 1 -flags +ilme+ildct -vsync 1 -threads 4 -y BBB_30sec_interlaced.ts Uncut console output - in the attached file. Thanks in advance, Anatol uncut.log Description: Binary data

Re: [FFmpeg-user] Which command line and version do I need to reproduce those properties?

try to add: -profile main -pix_fmt yuvj420p -aspect 1280:720 It could help if u added the ffprobe printout of the resultant file. Anyhow your printout does not represent the structure of the TEST.MOV file. On Sat, Dec 26, 2015 at 10:22 PM, Alexander Winnig < vernehmlass...@googlemail.com> wrote:

Re: [FFmpeg-user] ffprobe -show_frames values

werner.robi...@gmail.com wrote: On Wed, May 13, 2015 at 7:07 AM, Anatol anatol2...@gmail.com wrote: Werner, can you please shortly explain the no-scenecut issue. Without scenecut detection, if such event occurs in the middle of the GOP, as it usually does, the video quality till the end

Re: [FFmpeg-user] ffprobe -show_frames values

You don't have to disable scene cut detection. Without scencut the video quality is dramatically lower than when it is used. 'force_key_frames' and 'scenecut' work just fine together. Such videos passes Apple AppStore validation and Akamai does not complain about it either. Make sure to disable

Re: [FFmpeg-user] ffprobe -show_frames values

Large gop value is good enough for disabling it. On Tue, May 12, 2015 at 2:25 PM, Werner Robitza werner.robi...@gmail.com wrote: Make sure to disable '-g' option, occasionally x264 generates both forced and '-g', increasing the bitrate, reducing the quality and causing some other mess.

Re: [FFmpeg-user] Use force_key_frames to obtain keyframes at exactly the same positions as in the input stream?

Added a small patch to support 'source' option for 'force_key_frames' - https://github.com/anatolschwarz/FFmpeg/commit/1968f5fd83fcece5422b7bca4a37e48087774915 On Sun, May 3, 2015 at 2:12 AM, Henk D. Schoneveld belca...@zonnet.nl wrote: On 02 May 2015, at 22:32, Anatol anatol2...@gmail.com

Re: [FFmpeg-user] Use force_key_frames to obtain keyframes at exactly the same positions as in the input stream?

streams This could be called something like -force_key_frames 'from_source' Do you think it is possible to do? On 5/2/15 10:41 AM, Anatol wrote: It does not matter the type of the incoming protocol. And slight un-alignment tolerated by the CDN providers and Apple HLS validation

Re: [FFmpeg-user] Use force_key_frames to obtain keyframes at exactly the same positions as in the input stream?

Source key frames) in its Transcoder add-on. But Wowza also has other problems ... On Sat, May 2, 2015 at 11:06 AM, Henk D. Schoneveld belca...@zonnet.nl wrote: On 02 May 2015, at 06:27, Anatol anatol2...@gmail.com wrote: The idea is to gain the option to use the H264 source stream along

Re: [FFmpeg-user] Use force_key_frames to obtain keyframes at exactly the same positions as in the input stream?

Henk, Its a real problem, if the streams are un-aligned, the playback gets into jump-forward-backward mood. It's not a problem to get source file key frames and to have them encoded into the rest of the files. The problem is with a live streaming, because it is not possible to query it for the

Re: [FFmpeg-user] Use force_key_frames to obtain keyframes at exactly the same positions as in the input stream?

Henk, Live streaming, not files. On Sat, May 2, 2015 at 10:32 PM, Henk D. Schoneveld belca...@zonnet.nl wrote: On 02 May 2015, at 21:11, Anatol anatol2...@gmail.com wrote: Henk, Its a real problem, if the streams are un-aligned, the playback gets into jump-forward-backward mood

Re: [FFmpeg-user] Use force_key_frames to obtain keyframes at exactly the same positions as in the input stream?

impossible. Adding more than ‘a minimum amount’ of I-frames only makes sense for seeking purposes, at the cost of less compression/higher then necessary bitrate. Any pointer or advice on where to look for this in the code? On 4/29/15 8:54 PM, Anatol wrote: No responses on that one

Re: [FFmpeg-user] Use force_key_frames to obtain keyframes at exactly the same positions as in the input stream?

No responses on that one? It is very important issue. On Mon, Apr 27, 2015 at 11:47 PM, Haris Zukanovic haris.zukanovi...@gmail.com wrote: Hello, Can I use force_key_frames in some way to produce keyframes (IDR, not I-frames) at exactly the same PTS in output streams as they are found in

Re: [FFmpeg-user] Can I use ffmpeg to combine audio streams in .ts file?

ffmpeg -i SOURCE.mov -i LOGO.png -c:v libx264 -subq 7 -qcomp 0.6 -qmin 10 -qmax 50 -qdiff 4 -bf 16 -coder 1 -refs 6 -x264opts b-pyramid:weightb:mixed-refs:8x8dct:no-fast-pskip=0:nal-hrd=cbr -vprofile high -force_key_frames expr:'gte(t,n_forced*2)' -pix_fmt yuv420p -b:v 550k -s 640x360 -r 29.97 -g

Re: [FFmpeg-user] How to generate h.264 raw data

Deron, Please explain the data it generated did not look correct Anatol On Thu, Sep 25, 2014 at 7:16 PM, Deron de...@pagestream.org wrote: Is it possible to output just raw h.264 data? Better yet, both AnnexB and AVCC? Or is there a simple muxer that I can use that won't be so hard to look

Re: [FFmpeg-user] Concatenating two audio files

Turn your WAV files into raw PCM files - ffmpeg -i INPUT1 -c:a copy -vn -f s16le -y PCM1 Then u can either cat them together to get a raw PCM file or use ffmpeg concat protocol: ffmpeg -ar SAMPLE_RATE -channel_layout STEREO/MONO -f s16le -i concat:PCM1|PCM2|... -vn -c:a copy -f wav -y OUTPUT On