Re: [FFmpeg-user] 5% of audio samples missing when capturing audio on a mac

Hi, Now that I try it, it works fine for some random number of seconds, then stops. Sometimes 3, sometimes 300. Something that comes to mind is that Mojave release notes had something about a new model for security as it pertains to mic input (like to prevent a mac version of a "wiretap" type

Re: [FFmpeg-user] LUFS measurment for short length audio

> On 09 Sep 2020, at 10:33, christian.w...@4-real.com wrote: > > > > Hi list! > > > > Can somebody help to measure LUFS for audio files under 0,4 seconds??? > Cat it a couple of times first? Bouke > > > Yours sincerly > > Chris > > > > __

Re: [FFmpeg-user] rav1e encoding only using one core

On Sat, Sep 12, 2020 at 3:48 PM Carl Eugen Hoyos wrote: > Am Fr., 11. Sept. 2020 um 15:48 Uhr schrieb Robert Krüger > : > > > I'm playing around with rav1e and noticed in my first test that only one > > core is used of the 8 (16 virtual) I have. I tried with and without > > -threads setting. Sinc

Re: [FFmpeg-user] LUFS measurment for short length audio

On 14-09-2020 01:15 pm, Bouke wrote: On 09 Sep 2020, at 10:33, christian.w...@4-real.com wrote: Hi list! Can somebody help to measure LUFS for audio files under 0,4 seconds??? Cat it a couple of times first? A few more times is required. Total duration should be  >3 seconds. See http

Re: [FFmpeg-user] Errors and artefacts when decoding a .h264 file from security camera

On Sat, Sep 12, 2020 at 3:43 PM Carl Eugen Hoyos wrote: > Am Mi., 9. Sept. 2020 um 17:18 Uhr schrieb Robert Krüger > : > > > > Hi, > > > > I have a security camera file that gives me decoding errors which are > very > > likely the reason for several macroblocks being broken in the resulting > > v

Re: [FFmpeg-user] Errors and artefacts when decoding a .h264 file from security camera

On Mon, Sep 14, 2020 at 9:53 AM Robert Krüger wrote: > > > On Sat, Sep 12, 2020 at 3:43 PM Carl Eugen Hoyos > wrote: > >> Am Mi., 9. Sept. 2020 um 17:18 Uhr schrieb Robert Krüger >> : >> > >> > Hi, >> > >> > I have a security camera file that gives me decoding errors which are >> very >> > likel

Re: [FFmpeg-user] Question about -noauto_conversion_filters

Am 13.09.2020 um 20:18 schrieb Michael Koch: Hello all, I'm just testing the new -noauto_conversion_filters option. As the first step, I'm running this command line (without the new option): ffmpeg -v verbose -f lavfi -i testsrc2=s=svga:d=5,format=yuv422p10le -vf lut3d="VLog_to_V709.cube" -

Re: [FFmpeg-user] Question about -noauto_conversion_filters

On 14-09-2020 02:47 pm, Michael Koch wrote: ffmpeg -v verbose -f lavfi -i testsrc2=s=svga:d=5,format=yuv422p10le -vf format=rgb48le,lut3d="VLog_to_V709.cube",format=yuv422p10le -noauto_conversion_filters -pix_fmt yuv422p10le -c:v h264 -y out.mov Format conversion is carried out by libswscal

Re: [FFmpeg-user] Question about -noauto_conversion_filters

Am 14.09.2020 um 11:26 schrieb Gyan Doshi: On 14-09-2020 02:47 pm, Michael Koch wrote: ffmpeg -v verbose -f lavfi -i testsrc2=s=svga:d=5,format=yuv422p10le -vf format=rgb48le,lut3d="VLog_to_V709.cube",format=yuv422p10le -noauto_conversion_filters -pix_fmt yuv422p10le -c:v h264 -y out.mov F

Re: [FFmpeg-user] LUFS measurment for short length audio

To cat means to loop the file until it is longer then 0,4s? Yes we tried, there is a variation of 3db or more, so it is kind of suboptimal. We also know the loudnorm command. We use this command atm to read out values: ffmpeg -nostats -i 'filename' -filter_complex ebur128 -f null - and it is f

Re: [FFmpeg-user] Question about -noauto_conversion_filters

On 14-09-2020 03:41 pm, Michael Koch wrote: Am 14.09.2020 um 11:26 schrieb Gyan Doshi: On 14-09-2020 02:47 pm, Michael Koch wrote: ffmpeg -v verbose -f lavfi -i testsrc2=s=svga:d=5,format=yuv422p10le -vf format=rgb48le,lut3d="VLog_to_V709.cube",format=yuv422p10le -noauto_conversion_filters

Re: [FFmpeg-user] LUFS measurment for short length audio

> On 14 Sep 2020, at 13:23, christian.w...@4-real.com wrote: > > > To cat means to loop the file until it is longer then 0,4s? yes > > Yes we tried, there is a variation of 3db or more, so it is kind of > suboptimal. If it’s exact 3db, it smells like you might render the file to mono on cat

Re: [FFmpeg-user] LUFS measurment for short length audio

Its all mono we are talking about here Full command line would be ffmpeg -nostats -i '#{filename}' -filter_complex ebur128 -f null - 2>&1 (i only forward this from the IT section, but its the standard ffmpeg lufs measurment as far as i know) yes, we dont know if the customer values are correct.

Re: [FFmpeg-user] Question about -noauto_conversion_filters

Am 14.09.2020 um 13:24 schrieb Gyan Doshi: On 14-09-2020 03:41 pm, Michael Koch wrote: Am 14.09.2020 um 11:26 schrieb Gyan Doshi: On 14-09-2020 02:47 pm, Michael Koch wrote: ffmpeg -v verbose -f lavfi -i testsrc2=s=svga:d=5,format=yuv422p10le -vf format=rgb48le,lut3d="VLog_to_V709.cube",f

Re: [FFmpeg-user] Question about -noauto_conversion_filters

On 14-09-2020 04:54 pm, Gyan Doshi wrote: On 14-09-2020 03:41 pm, Michael Koch wrote: Am 14.09.2020 um 11:26 schrieb Gyan Doshi: On 14-09-2020 02:47 pm, Michael Koch wrote: ffmpeg -v verbose -f lavfi -i testsrc2=s=svga:d=5,format=yuv422p10le -vf format=rgb48le,lut3d="VLog_to_V709.cube",

Re: [FFmpeg-user] LUFS measurment for short length audio

> On 14 Sep 2020, at 13:54, > wrote: > > Its all mono we are talking about here > > Full command line would be > ffmpeg -nostats -i '#{filename}' -filter_complex ebur128 -f null - 2>&1 > (i only forward this from the IT section, but its the standard ffmpeg lufs > measurment as far as i know)

Re: [FFmpeg-user] LUFS measurment for short length audio

Thanks for measuring Bouke! Guess momentary isnt working with <0,4s too. I tried my example with adding silence before and after and i get both times -23.3db LUFS for i & m. Which is a 1db variation to the customers value. If all files are coming with a 1db difference, that would be something w

Re: [FFmpeg-user] LUFS measurment for short length audio

> On 14 Sep 2020, at 14:27, christian.w...@4-real.com wrote: > > Thanks for measuring Bouke! > Guess momentary isnt working with <0,4s too. Of course not, for both Momentary and Short, there is not enough media to measure it, take it it will be the same as Integrated. (And meaningless for suc

Re: [FFmpeg-user] LUFS measurment for short length audio

> On 14 Sep 2020, at 14:27, christian.w...@4-real.com wrote: > > I tried my example with adding silence before and after and i get both times > -23.3db LUFS for i & m. >>What happens when you use -ss and -t besides the silence (to crop the silence >>start / end, work here…) How does this w

[FFmpeg-user] Fwd: Yadif_cuda and Pix_fmt

I sent this message a couple times with zero response. Is there anyone that can help with using NVDEC for decoding, converting 8bit to 10bit on the GPU, then using NVENC to encode the video? If I understand correctly, you want to first convert to 10 bit and then > upload > to cuda (and nvenc).

[FFmpeg-user] bwdif filter question

Is the input to the bwdif filter fields or frames? Since, according to previous threads, ffmpeg decoders solely produce frames, Based on this: https://ffmpeg.org/ffprobe-all.html#bwdif I honestly can't figure out which it is: fields or frames. Thanks! Note: I'm experimenting with virtual ident

Re: [FFmpeg-user] Question about -noauto_conversion_filters

On 9/14/2020 4:57 AM, Michael Koch wrote: On 14-09-2020 04:54 pm, Gyan Doshi wrote: >> Each filter presents a list of input formats they can work with and a list of output formats they can directly generate. [...] Thanks for good explanation! Yes, that makes sense. Could that be included i

Re: [FFmpeg-user] bwdif filter question

> > Note: I'm experimenting with virtual identities in my Thunderbird email > client because the ffmpeg archives publish email addresses and I wish to > spoof in order to avoid spamming harvesters. And the fact that you are a troll has nothing to do with it? _

Re: [FFmpeg-user] LUFS measurment for short length audio

> On 14 Sep 2020, at 15:56, christian.w...@4-real.com wrote: > > > >> On 14 Sep 2020, at 14:27, christian.w...@4-real.com >> wrote: > >> >> I tried my example with adding silence before and after and i get both times >> -23.3db LUFS for i & m. > >>> Wha

Re: [FFmpeg-user] bwdif filter question

> Am 14.09.2020 um 16:39 schrieb Mark Filipak (ffmpeg) : > > Is the input to the bwdif filter fields or frames? In general, FFmpeg’s filter system doesn’t know about fields, only frames that may contain progressive content or interlaced content that you may want to de-interlace. Carl Eugen _

Re: [FFmpeg-user] bwdif filter question

On 09/14/2020 03:23 PM, Bouke wrote: Note: I'm experimenting with virtual identities in my Thunderbird email client because the ffmpeg archives publish email addresses and I wish to spoof in order to avoid spamming harvesters. And the fact that you are a troll has nothing to do with it? Ho

Re: [FFmpeg-user] USB Camera ffplay real-time and save to file

On Sat, 12 Sep 2020, Hans Carlson wrote: On Sat, 12 Sep 2020, Carl Eugen Hoyos wrote: Please provide the sample produced with the following command line: $ ffmpeg -f v4l2 -input_format mjpeg -framerate 30 -video_size 1280x720 -i /dev/video2 -c copy -f rawvideo -t 5 invalidapp.mjpg I have a