Re: [FFmpeg-user] HEVC Video Transcode Transfer VUI, SEI Information

2017-02-17 1:04 GMT+01:00 Ben Chang : >> I suspect no hevc encoder supported by FFmpeg supports it. > > Is there plan to support this? I don't know, you have to ask them. > This is more relevant to decode ctx being able to pass > information to encode ctx in a transcode session. > > If there is

Re: [FFmpeg-user] Scaling legal video levels

2017-02-17 2:39 GMT+01:00 Elliott Balsley : > I am trying to convert a single-frame H.264 MKV to a JPEG image. > Unfortunately the output is always clipped at 235. > The source video is full-range FFmpeg does not detect full-range video (video_signal_type_present_flag is 0, the default is limited

[FFmpeg-user] Bug in FFMPEG Alsa?

Hello, I have two alsa commands: 1. ffmpeg -f alsa -acodec pcm_s32le -i mic_sv temp.wav 2. arecord -Dmic_sv -c2 -r48000 -fS32_LE -twav temp.wav Command 1 takes 95% CPU and produces stuttery, clicky unusable audio. Command 2 takes 5% CPU and produces perfect audio. I'm on a Pi Zero. I compiled

Re: [FFmpeg-user] Bug in FFMPEG Alsa?

2017-02-17 11:59 GMT+01:00 christina zou : > 1. ffmpeg -f alsa -acodec pcm_s32le -i mic_sv temp.wav I don't understand this command line: What is "-acodec pcm_s32le" supposed to do (except forcing stuttery, unusable audio)? Carl Eugen ___ ffmpeg-user m

Re: [FFmpeg-user] Audio cut when using select filter

We changed out script to extract thumbnail in the second step. Still this looks like a ffmpeg bug. Feel free to report it ;-) -- Martin Ždila ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubsc

Re: [FFmpeg-user] Bug in FFMPEG Alsa?

Le nonidi 29 pluviôse, an CCXXV, christina zou a écrit : > 1. ffmpeg -f alsa -acodec pcm_s32le -i mic_sv temp.wav > > 2. arecord -Dmic_sv -c2 -r48000 -fS32_LE -twav temp.wav > > Command 1 takes 95% CPU and produces stuttery, clicky unusable audio. > > Command 2 takes 5% CPU and produces perfect

Re: [FFmpeg-user] Bug in FFMPEG Alsa?

2017-02-17 12:11 GMT+01:00 Carl Eugen Hoyos : > 2017-02-17 11:59 GMT+01:00 christina zou : > > > 1. ffmpeg -f alsa -acodec pcm_s32le -i mic_sv temp.wav > > I don't understand this command line: What is "-acodec pcm_s32le" > supposed to do (except forcing stuttery, unusable audio)? > > Carl Eugen >

Re: [FFmpeg-user] Bug in FFMPEG Alsa?

2017-02-17 12:19 GMT+01:00 Erik Dobberkau : > 2017-02-17 12:11 GMT+01:00 Carl Eugen Hoyos : > >> 2017-02-17 11:59 GMT+01:00 christina zou : >> >> > 1. ffmpeg -f alsa -acodec pcm_s32le -i mic_sv temp.wav >> >> I don't understand this command line: What is "-acodec pcm_s32le" >> supposed to do (excep

Re: [FFmpeg-user] Bug in FFMPEG Alsa?

Hi Carl, Thanks for the quick reply!! My mic natively records in 32bit LE format. I thought -acodec pcm_s32le was merely supplying the input format? On Fri, Feb 17, 2017 at 3:11 AM, Carl Eugen Hoyos wrote: > 2017-02-17 11:59 GMT+01:00 christina zou : > > > 1. ffmpeg -f alsa -acodec pcm_s32le -

Re: [FFmpeg-user] Bug in FFMPEG Alsa?

2017-02-17 12:19 GMT+01:00 christina zou : > My mic natively records in 32bit LE format. I thought -acodec pcm_s32le was > merely supplying the input format? No, it overwrites the decoder to produce stuttery, unusable audio. Please do not top-post here, Carl Eugen ___

Re: [FFmpeg-user] Bug in FFMPEG Alsa?

Carl, thanks again for the help. I'm really sorry about top-posting, but I have no idea what it means? I'm replying to this email thread that I've started to ffmpeg-users from gmail. Please advise me how else I should continue replying to this thread? Thanks again. On Fri, Feb 17, 2017 at 3:26 A

Re: [FFmpeg-user] Bug in FFMPEG Alsa?

2017-02-17 12:19 GMT+01:00 christina zou : > Hi Carl, > > Thanks for the quick reply!! > > My mic natively records in 32bit LE format. I thought -acodec > pcm_s32le was merely supplying the input format? You are right and it seems to work here but since you are reporting an issue I would suggest t

Re: [FFmpeg-user] Bug in FFMPEG Alsa?

> I'm really sorry about top-posting, but I have no idea what it means? Don't worry about it - it isn't very important, and Carl has no formal authority to tell you what to do. P ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailm

Re: [FFmpeg-user] Bug in FFMPEG Alsa?

> > I would also suggest using -acodec pcm_s16le (and maybe -ac 1 when using > a > > mono microphone) as well as -ar 48000 (or 44100) and checking the results > > thereof. > > Please don't! > Using -acodec pcm_s16le is not doing what you expect, just remove > all options. > > Carl Eugen > Oh, good

Re: [FFmpeg-user] Bug in FFMPEG Alsa?

2017-02-17 12:50 GMT+01:00 Erik Dobberkau : >> > I would also suggest using -acodec pcm_s16le (and maybe -ac 1 when using >> a >> > mono microphone) as well as -ar 48000 (or 44100) and checking the results >> > thereof. >> >> Please don't! >> Using -acodec pcm_s16le is not doing what you expect, ju

Re: [FFmpeg-user] Bug in FFMPEG Alsa?

> I'm really sorry about top-posting, but I have no idea what it means? I'm > replying to this email thread that I've started to ffmpeg-users from gmail. > Please advise me how else I should continue replying to this thread? > > Thanks again. > It means to answer below the message body and to remo

Re: [FFmpeg-user] Bug in FFMPEG Alsa?

Am 17.02.2017 um 12:46 schrieb Phil Rhodes: I'm really sorry about top-posting, but I have no idea what it means? Don't worry about it - it isn't very important, and Carl has no formal authority to tell you what to do and you have? a thread which get mixed with top posting, full quote and

Re: [FFmpeg-user] QSV Hevc to HLS not segmenting?

2017-02-16 17:23 GMT+08:00 Markku Vainio : > > > > -Original Message- > From: ffmpeg-user [mailto:ffmpeg-user-boun...@ffmpeg.org] On Behalf Of > Steven Liu > Sent: 16. helmikuutata 2017 8:53 > To: FFmpeg user questions > Subject: Re: [FFmpeg-user] QSV Hevc to HLS not segmenting? > > 2017-

Re: [FFmpeg-user] Demultiplex UDP live stream to multiple single live stream outputs using FFMPEG & FFSERVE

can anyone help me with issue am facing. On Thu, Feb 16, 2017 at 1:44 PM, Tiras Kubu Muturi < tiras.mut...@radioafricagroup.co.ke> wrote: > hey guys, > i have a problem with ffmpeg. i have an input live stream that has 8 > inputs and i want to use ffmpeg to convert it from udp live steram to tcp

Re: [FFmpeg-user] Scaling legal video levels

The source was ripped from a BluRay using MakeMKV, which does not re-encode, it just rewraps the stream. I don't know how the BluRay was originally encoded. If I convert this MKV to MOV using ffmpeg (without re-encoding), I can then open it in DaVinci Resolve and measure the levels as full range.

Re: [FFmpeg-user] QSV Hevc to HLS not segmenting?

> > > -Original Message- > From: ffmpeg-user [mailto:ffmpeg-user-boun...@ffmpeg.org] On Behalf Of > Steven Liu > Sent: 16. helmikuutata 2017 8:53 > To: FFmpeg user questions > Subject: Re: [FFmpeg-user] QSV Hevc to HLS not segmenting? > > 2017-02-15 18:42 GMT+08:00 Markku Vainio : > > >

Re: [FFmpeg-user] HEVC Video Transcode Transfer VUI, SEI Information

>>> I suspect no hevc encoder supported by FFmpeg supports it. >> >> Is there plan to support this? > >I don't know, you have to ask them. I should post in ffmpeg-devel I guess? >Which encoder supports encoding HDR? Any encoder that supports encoding HEVC 10bits and including metada in VUI & SE

Re: [FFmpeg-user] Bug in FFMPEG Alsa?

Hi Nicolas, Here is the result of your two commands: 1. time ffmpeg -i temp_arecord.wav temp_ffmpeg.wav Full output: http://pastebin.com/HU8qeggq real 0m3.154s user 0m1.230s sys 0m0.370s 2. time ffmpeg -i temp_arecord.wav -c copy temp_ffmpeg2.wav Full output

Re: [FFmpeg-user] Bug in FFMPEG Alsa?

Hi Carl (and all), Well, I can't remove the -acodec pcm_s32le option. If I just run: ffmpeg -f alsa -i mic_sv temp.wav '[alsa @ 0x243b3f0] cannot set sample format 0x1 2 (Invalid argument) mic_sv: Input/output error' > Next step will be to copy the options used for arecord. I already made s

Re: [FFmpeg-user] QSV Hevc to HLS not segmenting?

2017-02-17 23:22 GMT+08:00 Markku Vainio : > > > > > > > -Original Message- > > From: ffmpeg-user [mailto:ffmpeg-user-boun...@ffmpeg.org] On Behalf Of > > Steven Liu > > Sent: 16. helmikuutata 2017 8:53 > > To: FFmpeg user questions > > Subject: Re: [FFmpeg-user] QSV Hevc to HLS not segme

Re: [FFmpeg-user] QSV Hevc to HLS not segmenting?

2017-02-18 10:43 GMT+08:00 Steven Liu : > > > 2017-02-17 23:22 GMT+08:00 Markku Vainio : > >> >> > >> > >> > -Original Message- >> > From: ffmpeg-user [mailto:ffmpeg-user-boun...@ffmpeg.org] On Behalf Of >> > Steven Liu >> > Sent: 16. helmikuutata 2017 8:53 >> > To: FFmpeg user questions

Re: [FFmpeg-user] Bug in FFMPEG Alsa?

I also wanted to share my full debug-level log from FFMPEG when I try to record ALSA audio, below. I have a few questions: 1. Why is my ALSA duration a *negative* value? 2. My ALSA bitrate is shown as 3072 kbps. This seems high - I only have a Pi Zero. Is this a value I can manually set? $ ALSA_C