[FFmpeg-user] Why are half the frames "duplicate" ?

I'm transcoding mpeg2 -> x264. Stream #0:0[0x64]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, progressive), 720x480 [SAR 8:9 DAR 4:3], Closed Captions, 29.97 fps, 59.94 tbr, 90k tbn, 59.94 tbc When I run ffmpeg: ffmpeg -i in.mpg -map 0:0 -map 0:2 -c:v libx264 -tune film -pr

Re: [FFmpeg-user] install

Ignore the last line, didn't mean to include that. On Wed, Sep 26, 2018 at 9:27 PM, Michael Shaffer wrote: > Uncompress ffmpeg to a directory, like c:\ffmpeg > > You don't have to install it. The program is located at > c:\ffmpeg\bin\ffmpeg.exe > > The simplest way is to put your mkv files in th

Re: [FFmpeg-user] install

Uncompress ffmpeg to a directory, like c:\ffmpeg You don't have to install it. The program is located at c:\ffmpeg\bin\ffmpeg.exe The simplest way is to put your mkv files in the c:\ffmpeg\bin\ directory and run ffmpeg on them from there. For example cd c:\ffmpeg\bin\ ffmpeg -i homevideo1.mkv -c

Re: [FFmpeg-user] rtmp re-encode to rtmp stops frequently

newest version of ffmpeg has too many bugs as well as it takes a lots of cpu uses . mean while, on compiling libfdk_aac codec it produces error and alao gives nasm yasm on supported So on that case what can i do ?? 1. i need rtmp to rtmp restream 2. ffmpeg should enable nvidia to compile tesla m6

Re: [FFmpeg-user] install

Am 26.09.18 um 16:40 schrieb M M: > A buddy told me to try ffmpeg to make my MKV files into DIVX. I just > downloading but have no clue how to do this or install the program, could you > help? you don't tell what you have downloaded nor on what operating system

Re: [FFmpeg-user] Bad Quality Webm video with alpha

*Definitely not without the complete, uncut console output.* I don't know what you mean by "the complete, uncut console output". Could you explain please? > > Any ideas on how to get a smaller file without loosing too much quality? > > Definitely not without the complete, uncut console output.

Re: [FFmpeg-user] Questions regarding hevc_videotoolbox encoding

2018-09-27 0:08 GMT+02:00, Nomis101 🐝 : > Am 26.09.18 um 21:27 schrieb Carl Eugen Hoyos: >> This is not unexpected. >> >> Feel free to try even higher bit-rates or main10 profile. > > Yes, main10 gives little bit nicer results. It seems to me there is a > bitrate limit. If I use 3k for example

Re: [FFmpeg-user] Questions regarding hevc_videotoolbox encoding

Am 26.09.18 um 21:27 schrieb Carl Eugen Hoyos: This is not unexpected. Feel free to try even higher bit-rates or main10 profile. Yes, main10 gives little bit nicer results. It seems to me there is a bitrate limit. If I use 3k for example (same as source) ffmpeg everages to 22000k. How to

[FFmpeg-user] Delay in windows screen capture

Hello, I'm able to capture from a windows desktop and send that out a Blackmagic DeckLink card (in NTSC format), however there is a substantial delay, almost a second, between the windowz direct-connected monitor and the SDI monitor. Thoughts on why this is happening? The system is not CPU bo

Re: [FFmpeg-user] Bad Quality Webm video with alpha

2018-09-26 23:21 GMT+02:00, Rafael Mancini : > Any ideas on how to get a smaller file without loosing too much quality? Definitely not without the complete, uncut console output. Please find out what "top-posting" means and don't do it here. Carl Eugen __

Re: [FFmpeg-user] Bad Quality Webm video with alpha

Thanks a lot for your answer. The WebM format is ideal for what I'm trying to do, which is alpha video with good quality and decent size. It used to be the .flv which got discontinued. So I changed the command to Constant Quality: *ffmpeg -r 24 -i InputFileName_%04d.png" -c:v libvpx-vp9 -crf 20 -

Re: [FFmpeg-user] rtmp re-encode to rtmp stops frequently

2018-09-26 6:37 GMT+02:00, Remo Rayamajhi : > ffmpeg version 3.0.11 Copyright (c) 2000-2018 the FFmpeg developers This is 2,5 years old and definitely unsupported (here). Carl Eugen ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/

Re: [FFmpeg-user] Questions regarding hevc_videotoolbox encoding

2018-09-26 21:27 GMT+02:00, Carl Eugen Hoyos : > 2018-09-26 20:23 GMT+02:00, Nomis101 🐝 : > >> /$ ffmpeg -i video_in.mkv -acodec copy -vcodec hevc_videotoolbox -b:v >> 6000k -tag:v hvc1 -profile:v main video_out.mp4/ > > Complete, uncut console output missing. Sorry about this... main10 can even

Re: [FFmpeg-user] Questions regarding hevc_videotoolbox encoding

2018-09-26 20:23 GMT+02:00, Nomis101 🐝 : > /$ ffmpeg -i video_in.mkv -acodec copy -vcodec hevc_videotoolbox -b:v > 6000k -tag:v hvc1 -profile:v main video_out.mp4/ Complete, uncut console output missing. > But the quality is still not comparable with software encoded HEVC. This is not unexpecte

[FFmpeg-user] Questions regarding hevc_videotoolbox encoding

On my MacBook Pro I tried GPU accelerated videotoolbox HEVC encoding. It is indeed very fast. Sadly, the default video quality is very poor, but increasing the bit-rate enhances the quality. /$ ffmpeg -i video_in.mkv -acodec copy -vcodec hevc_videotoolbox -b:v 6000k -tag:v hvc1 -profile:v main v

[FFmpeg-user] ffmpeg concat copy changes xvid to mpg4a that stutters

In put files have xvid mpeg-4, mpg3 ffmpeg -f concat -safe 0 -fflags +genpts -i files.txt -c copy -bsf:v mpeg4_unpack_bframes test.mkv has mp4v, mpga The concatenated video stutters, audio is fine. Why is this happening when I just copy? And why does the output file not have xvid? Se

Re: [FFmpeg-user] Bad Quality Webm video with alpha

2018-09-25 1:14 GMT+02:00, Rafael Mancini : > I'm trying to generate a WebM video with alpha for a HTML5 template. > Already tried different compression settings and I'm still getting poor > quality results for complex videos with lots of animated objects. > > The Input video is made in After Effe

Re: [FFmpeg-user] how to remove useless nalu from video stream

On Wed, Sep 26, 2018 at 22:09:08 +0800, qw wrote: > If there is one nalu with zero size, and ffmpeg converts ts into mp4 > with the option of -codec copy, then vlc can't play video stream > correctly. Is there any way to remove useless nalu, i.e. its size is > 0? I don't know my way around NALs, b

Re: [FFmpeg-user] how to set start time of ts file

2018-09-26 13:45 GMT+02:00, qw : > There are some ts files, whose start time is not zero, and even too large, > such as 1 hour. Or (in a random sample here): 90047.205533 > How to set start time to zero for those ts files? In my test, start time of the output file is (very close to) zero for su

Re: [FFmpeg-user] Playing an uncompressed raw interlaced RTP video stream

2018-09-26 14:15 GMT+02:00, villas...@yahoo.com.au : > Hi, > > I am unable to get ffplay to play back a raw uncompressed interlaced > video from an RTP stream, coming from a camera feed. The camera > broadcasts the SDP using SAP, which I have been able to extract into > a local file. The contents o

Re: [FFmpeg-user] how to remove useless nalu from video stream

2018-09-26 16:09 GMT+02:00, qw : > If there is one nalu with zero size, and ffmpeg converts ts into mp4 with > the option of -codec copy, then vlc can't play video stream correctly. Is > there any way to remove useless nalu, i.e. its size is 0? Please provide the command line you tested together

[FFmpeg-user] install

A buddy told me to try ffmpeg to make my MKV files into DIVX. I just downloading but have no clue how to do this or install the program, could you help? Thanks ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmp

[FFmpeg-user] how to remove useless nalu from video stream

Hi, I have encountered the following problem: If there is one nalu with zero size, and ffmpeg converts ts into mp4 with the option of -codec copy, then vlc can't play video stream correctly. Is there any way to remove useless nalu, i.e. its size is 0? Thanks! Regards Andrew

Re: [FFmpeg-user] Playing an uncompressed raw interlaced RTP video stream

Are you certain the. camera output is interlaced? HD720 is typically progressive. If you decode progressive as interlaced you would get two very similar images. Paul Yurt On Sep 26, 2018, at 8:15 AM, villas...@yahoo.com.au wrote: Hi, I am unable to get ffplay to play back a raw uncompres

[FFmpeg-user] Playing an uncompressed raw interlaced RTP video stream

Hi,  I am unable to get ffplay to play back a raw uncompressed interlaced video from an RTP stream, coming from a camera feed. The camera broadcasts the SDP using SAP, which I have been able to extract into a local file. The contents of the SDP:   v=0   o=- 340496 340496 IN IP4 192.168.204.40   s

Re: [FFmpeg-user] how to set start time of ts file

Use the setpts filter, set startpts to 0; ffmpeg -I in.file -vf setpts=’PTS-STARTPTS’ outfile look at the libavfilter/setpts.c file. you can get it. LeiHe helei0...@hotmail.com 在 2018年9月26日，下午7:45，qw mailto:applema...@163.com>> 写道： There are some ts files, w

[FFmpeg-user] how to set start time of ts file

Hi, I have one question about ffmpeg usage. There are some ts files, whose start time is not zero, and even too large, such as 1 hour. How to set start time to zero for those ts files? Thanks! Regards Andrew ___ ffmpeg-user mailing list ffmpeg-