Re: [FFmpeg-user] libx264 very bad scaling with 4 real CPU cores (no HT)

On 01.12.2015 19:29, Lou wrote: On Tue, 1 Dec 2015 19:17:14 +0100 D wrote: Another test: this time I built ffmpeg myself according to https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu And here's the benchmark -- Very bad scaling: $ time ffmpeg -i a.mp4 -c:v libx264

Re: [FFmpeg-user] libx264 very bad scaling with 4 real CPU cores (no HT)

Thanks for the confirmation. I kind of expect that lots of people have this problem then. What is your CPU and OS? Forget to add to my other email that HandBrake-GUI uses ~387% in top (which is good so far) but I couldn't test with "-threads 1" and so on and see how it scales. Maybe it's

Re: [FFmpeg-user] MKV to MP4

On Tue, Dec 01, 2015 at 22:39:36 +, Jack Tucker wrote: > I then drop a MKV on the bat file which then copies the file, but windows say > it has an issue with codec.Error: "Windows Media Player cannot play the file. > The Player might not support the file type or might not support the codec

Re: [FFmpeg-user] MKV to MP4

Hi Jack, You can download some free codecs which allow Windows Media Player to play 10-bit H.264. Just google that. Alternatively, change your command from “-vcodec copy” to “-pix_fmt yuv420p -vcodec libx264”, but this will result in some loss of quality and a much slower encode (because you

Re: [FFmpeg-user] MKV to MP4

Hi Moritz, Apologies for the lack of info in my last email, it was a long night :)! I'm not at all good with coding/command so please be as helpful as possible. I have created a bat file with the command:for %%a in ("*.mkv") do c:\users\sparrow\desktop\ffmpeg\bin\ffmpeg.exe -i "%%a" -vcodec

[FFmpeg-user] image transmission

How to transmit an image of contiguously for a while? ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user

[FFmpeg-user] Playing DSD /DSF DSD Over PCM

Howdy: ffmpeg seems to able to play DSD files just fine. However - I seem to be unable to get it to pass the audio data to my DAC via alsa. Alsa seems to support DSD_U32_BE .. ? Thanks for your help. m. ___ ffmpeg-user mailing list

Re: [FFmpeg-user] MKV to MP4

On Tue, Dec 01, 2015 at 03:09:42 +, Jack Tucker wrote: > I am trying to convert a MKV into m4p using Windows, every time I do it has > issues with codec. Which line of code canI I use which will work? > I have tried for %%a in ("*.mkv") do ffmpeg.exe -i "%%a" -vcodec copy -acodec > copy

Re: [FFmpeg-user] Getting x265 parameter help

On Mon, Nov 23, 2015 at 02:00:19PM +0100, Moritz Barsnick wrote: > On Sun, Nov 22, 2015 at 19:09:52 -0900, Lou wrote: > > > The website says to do "x265 --help" but that doesn't work. > > What web site? > > ffmpeg's website. :-) > https://www.ffmpeg.org/ffmpeg-codecs.html#libx265 > > > ffmpeg -h

Re: [FFmpeg-user] libx264 very bad scaling with 4 real CPU cores (no HT)

Another test: this time I built ffmpeg myself according to https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu And here's the benchmark -- Very bad scaling: $ time ffmpeg -i a.mp4 -c:v libx264 -crf 23 -threads 1 -c:a libvorbis b.mp4 -y real9m51.886s $ time ffmpeg -i a.mp4 -c:v libx264

Re: [FFmpeg-user] libx264 very bad scaling with 4 real CPU cores (no HT)

On Tue, 1 Dec 2015 19:17:14 +0100 D wrote: > Another test: this time I built ffmpeg myself according to > https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu > And here's the benchmark -- Very bad scaling: > > $ time ffmpeg -i a.mp4 -c:v libx264 -crf 23 -threads 1 -c:a

[FFmpeg-user] rebroadcasting an m3u8 stream (HLS)

I'm trying to decrypt and rebroadcast a stream so I can play it in VLC, which is working (sort of), except on my server it can't seem to keep up while transcoding the live stream. When I load the unencrypted m3u8 file in VLC or Safari it works for a few seconds then pausesit does this a

Re: [FFmpeg-user] Getting x265 parameter help

On Tue, 1 Dec 2015 12:03:32 -0600 Mike Brown wrote: > Sorry, I missed this response. > > All of the x265 static binaries that I've downloaded for my XP-64 system > all fail with a KERNEL32.dll error. There is a routine that it is looking > for that is not in the

Re: [FFmpeg-user] Getting x265 parameter help

On Tue, Dec 01, 2015 at 09:43:27AM -0900, Lou wrote: > On Tue, 1 Dec 2015 12:03:32 -0600 > Mike Brown wrote: > > > Sorry, I missed this response. > > > > All of the x265 static binaries that I've downloaded for my XP-64 system > > all fail with a KERNEL32.dll error.

Re: [FFmpeg-user] libx264 very bad scaling with 4 real CPU cores (no HT)

On 01 Dec 2015, at 19:17, D wrote: > Another test: this time I built ffmpeg myself according to > https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu > And here's the benchmark -- Very bad scaling: > > $ time ffmpeg -i a.mp4 -c:v libx264 -crf 23 -threads 1 -c:a libvorbis

Re: [FFmpeg-user] AVISynth use error

On Mon, Nov 23, 2015 at 03:42:01PM -0600, Mike Brown wrote: > On Mon, Nov 23, 2015 at 08:57:57AM -0900, Lou wrote: > > On Mon, 23 Nov 2015 10:06:07 -0600 > > Mike Brown wrote: > > > > > I noticed that ffmpeg can use avisynth scripts, but it didn't work for me: > > > >

Re: [FFmpeg-user] Two SAR/DAR pairs (codec and stream SAR/DAR)

On 30.11.2015 15:27, Nikita Skalkin wrote: Hello everyone! In our company, we use ffmpeg to parse video info and convert it, according parsed info. Recently we found a bug in our system. When calling ffprobe for video, we got 2 SAR/DAR pairs. Example: Stream #0:0(eng): Video: mpeg2video