[FFmpeg-user] useful tools for beginners

Hello everybody, as I've said before, I am a student and I'm triyng to learn how to use ffmpeg. It is not an easy task, because there is not a lot of documents that explain it in a easy way. I would like to share with you the tools I found useful, and I ask you to reply linking the resourcies and t

Re: [FFmpeg-user] How to add 1or more black frames @ the beginning and @ the end of a film with audio, without transcoding?.

; On Feb 18, 2021, at 03:32, Marco Mircoli wrote: > > > > Hello, > > I was just asking an help, something like...a weblink to something > > similar I could adapt, an example. > > I am a student, I am learning by myself. It's not easy, because online > > ther

Re: [FFmpeg-user] How to add 1or more black frames @ the beginning and @ the end of a film with audio, without transcoding?.

o gio 18 feb 2021 alle ore 12:02 Paul B Mahol ha scritto: > On Thu, Feb 18, 2021 at 11:33 AM Marco Mircoli > wrote: > > > Hello, > >tried a lot of times, but nothingI can't do it well. > > Any advice? > > The goal is to do it with a single comman

[FFmpeg-user] mcompand: anybody knows how to use it?

Hello everibody, tried few times to use it, never succeed :-( Read on internet all the document available on this filet, but nothing. Any help? Thanks. S. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-u

[FFmpeg-user] How to add 1or more black frames @ the beginning and @ the end of a film with audio, without transcoding?.

Hello, tried a lot of times, but nothingI can't do it well. Any advice? The goal is to do it with a single command line. Thanks. S. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe

Re: [FFmpeg-user] Same output bit depth and sampling frequency as input?

I think it is not a bug. It is normal that dynaudnorm and loudnorm gives differents results, they are 2 different instruments and they have different parameters and actions. Thanks. S. Il giorno dom 14 feb 2021 alle ore 12:08 Paul B Mahol ha scritto: > On Sun, Feb 14, 2021 at 12:01 PM Ma

Re: [FFmpeg-user] Same output bit depth and sampling frequency as input?

Yes, the result Is not leveled to the target loudness value Il Ven 12 Feb 2021, 19:26 Paul B Mahol ha scritto: > On Fri, Feb 12, 2021 at 7:17 PM Marco Mircoli > wrote: > > > Il giorno ven 12 feb 2021 alle ore 10:53 Paul B Mahol > > ha > > scritto: > > >

Re: [FFmpeg-user] Same output bit depth and sampling frequency as input?

Il giorno ven 12 feb 2021 alle ore 10:53 Paul B Mahol ha scritto: > On Fri, Feb 12, 2021 at 12:48 AM Marco Mircoli > wrote: > > > Hello everybody, > > wondering how to set the same output audio specs (sample rate anche bit > > depth) as input. > > > &

[FFmpeg-user] Same output bit depth and sampling frequency as input?

Hello everybody, wondering how to set the same output audio specs (sample rate anche bit depth) as input. I tried like that ffmpeg -i FILE_FROM -af dynaudnorm,loudnorm=I=-16. 5:TP=-1.5:LRA=7 -sample_fmt s16 -ar 44100 FILE_TO if I have a 48KHZ input, the output is 44100, so doesn't work for my

[FFmpeg-user] Filter just the 1st audio channel of the input.

Hello, wandering if it is possible to process just the 1st audio channel of an input. I don't know how many channels I will have as input, but I know that I have to process just the 1st and the others I have not to considerate. INPUT from mono to multichannel filters. OUTPUT just one channe

Re: [FFmpeg-user] VOICE POST PRODUCTION IN ONE LINE

t it does not > have that specific filter. > Also note that those audio filters are not magic way to solve your problems > by putting them in filtergraph and forgetting about them next second. > > > > On Fri, Jan 29, 2021, 10:21 PM Paul B Mahol wrote: > > > > >

Re: [FFmpeg-user] VOICE POST PRODUCTION IN ONE LINE

Mahol ha scritto: > On Fri, Jan 29, 2021 at 11:25 AM Marco Mircoli > wrote: > > > Hello, > > anybody knows the reason why this command works. > > > > $ffmpegCmd = "ffmpeg -i $fileOriginale -af > > > > > adeclick,afftdn=nr=80:nf

Re: [FFmpeg-user] VOICE POST PRODUCTION IN ONE LINE

. Il giorno gio 28 gen 2021 alle ore 10:15 Michael Koch < astroelectro...@t-online.de> ha scritto: > Am 28.01.2021 um 09:44 schrieb Marco Mircoli: > > Goodmorning everyone. > > I'm new to ffmpeg and was wondering if anyone from the group could help > me > > set up

Re: [FFmpeg-user] Tool to write ffmpeg strings

or some fairly complex situations and, in the logs, provides the > ffmpeg command that it used to get there. > My need at the time was video specific. I'm unsure if it supports all the > audio filters you're looking for. > > -Jason > > > > On Thu, Jan 28,

Re: [FFmpeg-user] Tool to write ffmpeg strings

ng? Thanks. S. Il giorno gio 28 gen 2021 alle ore 10:24 Chris Miceli ha scritto: > Hi Marco, > > If you are a user of MacOS then have a look at Handbrake. I think there is > a windows version as well but as a Linux user I'm not 100% sure. > > If you hunt for "handbr

[FFmpeg-user] Tool to write ffmpeg strings

Hello, my problem is that I am not a programmer (I'm a sound designer) I would like to approach FFMPEG. It's hard for me to learn the syntax of ffmpeg. Do you know if is there a tool that let me use ffmpeg filters in a frontend environment and shows me the command line of what I'm doing? Thanks

[FFmpeg-user] VOICE POST PRODUCTION IN ONE LINE

Goodmorning everyone. I'm new to ffmpeg and was wondering if anyone from the group could help me set up a command line. My goal is to improve voice audio recordings. I would like to be able to do this starting from a command line I have in my script, modifying it to add: - 70HZ high pass filter -

Re: [FFmpeg-user] how to burn subtitles and transcode live stream

Good morning Who can I write to for help? M. *--Marco Sestan* Director *Audio-Video Production& PostProduction Manager* *Mob: +39 348 47 39 003* Il giorno sab 24 ott 2020 alle ore 01:45 Moritz Barsnick ha scritto: > Hi Daniel, > > On Wed, Oct 21, 202

Re: [FFmpeg-user] DE-REBERB

As plugin I mean LADSPA plugin Il giorno sab 3 ott 2020 alle ore 13:46 Marco Mircoli ha scritto: > Hello, >quite interested if there is a de-reverb funcion in ffmpeg or if is it > possible to implement via plugins. > Thank

[FFmpeg-user] DE-REBERB

Hello, quite interested if there is a de-reverb funcion in ffmpeg or if is it possible to implement via plugins. Thanks in advance. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, vis

Re: [FFmpeg-user] HIGHPASS FILTER AND ID£ METADATA

etadata Publisher='agency' -metadata Language=italian -b:a ".$convert_speed."k $audio_output_mp3 2>&1"); Now, I would like to insert an album artwork in the mp3. Is it possible? Thanks. S. Il giorno gio 1 ott 2020 alle ore 17:45 Marco Mircoli ha scritto: > Hello, t

Re: [FFmpeg-user] HIGHPASS FILTER AND ID£ METADATA

udio_output_mp3 2>&1"); Tried with 700 hz the result is very low in volume it seems that it normalize to -24 and after apply the highpass another point I can't fix is the metadata, they works except for the author:url. Maybe am I wrong with syntax? Thanks in advance. Il giorn

Re: [FFmpeg-user] HIGHPASS FILTER AND ID£ METADATA

Thanks a lot! Il giorno gio 1 ott 2020 alle ore 14:17 Michael Koch < astroelectro...@t-online.de> ha scritto: > Am 01.10.2020 um 14:06 schrieb Michael Koch: > > Am 01.10.2020 um 13:25 schrieb Marco Mircoli: > >> Hello', > >> I'm a newbie. &g

[FFmpeg-user] HIGHPASS FILTER AND ID£ METADATA

Hello', I'm a newbie. Just bought a php script that use ffmpeg. it converts to mp3/96Kbps all media uploaded in a unique format. this is the line, and now it normalizes to R128 (thanks Moritz) $shell = shell_exec("$ffmpeg_b -i $audio_file_full_path -map 0:a:0 -af loudnorm -b:a 96k $audio_o

Re: [FFmpeg-user] HOW TO APPLY LOUDNESS R128 PROFILE

Thank you! Il giorno gio 24 set 2020 alle ore 09:54 Paul B Mahol ha scritto: > On Wed, Sep 23, 2020 at 03:30:25PM +0200, Marco Mircoli wrote: > > Thanks Motitz, > >this is a one pass norm. > > Is there a way to implement 2 pass? > > Yes there is a way, you ca

Re: [FFmpeg-user] HOW TO APPLY LOUDNESS R128 PROFILE

Thanks Motitz, this is a one pass norm. Is there a way to implement 2 pass? Thanks. S. Il giorno mer 23 set 2020 alle ore 14:42 Moritz Barsnick ha scritto: > On Wed, Sep 23, 2020 at 14:16:31 +0200, Marco Mircoli wrote: > > Just bought a php script that use ffmpeg. > > I hop

[FFmpeg-user] HOW TO APPLY LOUDNESS R128 PROFILE

Hello', I'm a newbie. Just bought a php script that use ffmpeg. it converts to mp3/96 all media uploaded in a unique format. this is the line $shell = shell_exec("$ffmpeg_b -i $audio_file_full_path -map 0:a:0 -b:a 96k $audio_output_mp3 2>&1"); I'm wondering if it is possible to include in

[FFmpeg-user] Multiple FFMpeg-Cuda-HLS-Transcoding Instances -> Deadlock Behavior

,agroup:audio” $SEGMENT_FILE_NAME $MEDIA_PLAYLIST_PREFIX Please help me to fix this behavior. Best regards Marco Kittel pEpkey.asc Description: application/pgp-keys ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/lis

[FFmpeg-user] Implicit Transcoding of Video/Audio Content in an TS MUX MPEG Container to HLS

options, in order to say in the last where via var_map how my content is arranged in a media playlist. Is their a way to that ffmpeg implicitly takes the video track and takes all audio content and maps it to hls? Best regards Marco Kittel pEpkey.asc Description: application/pgp-keys

[FFmpeg-user] Sending partial GOP / flushing buffers

. the whole 250 GOP is written at once. Is there any way to force buffers to be flushed more frequently without increasing the number of i-frames? I would like to start processing the data as soon as possible rather than having to wait for all 250 frames to be processed. - Marco

Re: [FFmpeg-user] Creat mosaic without loose quality

idering my target to place the four video together, do you have any idea to speed up the file creation? Regards On Sunday, November 26, 2017, 12:49:17 PM GMT+1, Carl Eugen Hoyos wrote: 2017-11-26 8:51 GMT+01:00 Marco De Angelis : > I'm analyzing the video using Quicktime since

Re: [FFmpeg-user] Cannot set ALSA buffer size (Invalid argument) during capture

Well, thank you! FFmpeg is an impressive project. -- Marco ___ 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

Re: [FFmpeg-user] Cannot set ALSA buffer size (Invalid argument) during capture

On Mon, Nov 27, 2017 at 2:43 AM, Carl Eugen Hoyos wrote: > Please double the definition of > ALSA_BUFFER_SIZE_MAX > on top of libavdevice/alsa.h until the device works for you > and report back so I can commit the new value! Doubling once from 65536 to 131072 was enou

Re: [FFmpeg-user] Cannot set ALSA buffer size (Invalid argument) during capture

million frames, which is way more than what is really needed and causes a memory allocation error on my system. :04 04 bc8ae5608ccfe6b46dc90633c535d91b4c6c0e2b 88c1baef83722b3310430a9933221876d0db6095 M libavdevice Best, Marco

Re: [FFmpeg-user] Cannot set ALSA buffer size (Invalid argument) during capture

On Sun, Nov 26, 2017 at 8:02 PM, Carl Eugen Hoyos wrote: > > Then please use git bisect to find the change > introducing the regression. I'm trying, but many commits do not compile properly. Specifically, I'm stuck with: make: *** No rule to make target 'libavutil/macros.h', needed by 'libswscal

Re: [FFmpeg-user] Cannot set ALSA buffer size (Invalid argument) during capture

> > > Thanks! With this, 0.6.7 runs > > Sorry, I don't understand this sentence. ​Using the option '-ac 2', ffmpeg 0.6.7 works. But, using the same option, the current version from the master git branch doesn't work. -- Marco ​

Re: [FFmpeg-user] Cannot set ALSA buffer size (Invalid argument) during capture

> $ ffmpeg -f alsa -ac 2 -i hw:1,0 -t 30 out.wav Thanks! With this, 0.6.7 runs but newer versions still complain about: [alsa @ 0x55eb8e2a6780] cannot set ALSA buffer size (Invalid argument) hw:1,0: Input/output error Any idea? -- Marco ___ ffm

Re: [FFmpeg-user] Cannot set ALSA buffer size (Invalid argument) during capture

0 configuration: --disable-vaapi --disable-ffserver --prefix=/home/marco/ffmpeg_build --extra-cflags=-I/home/marco/ffmpeg_build/include --bindir=/home/marco/bin libavutil 50.15. 1 / 50.15. 1 libavcodec52.72. 2 / 52.72. 2 libavformat 52.64. 2 / 52.64. 2 libavdevice 5

Re: [FFmpeg-user] Cannot set ALSA buffer size (Invalid argument) during capture

: --prefix=/home/marco/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/marco/ffmpeg_build/include --extra-ldflags=-L/home/marco/ffmpeg_build/ lib --extra-libs='-lpthread -lm' --bindir=/home/marco/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetyp

[FFmpeg-user] Cannot set ALSA buffer size (Invalid argument) during capture

: subdevice #0 card 1: Em28xxAudio [Em28xx Audio], device 0: Em28xx Audio [Empia 28xx Capture] Subdevices: 1/1 Subdevice #0: subdevice #0 and I can capture audio/video without problems using the `qv4l2` test bench. Thanks! Marco ___ ffmpeg-user mailing

Re: [FFmpeg-user] Creat mosaic without loose quality

30991.07[aac @ 01df09e10740] Qavg: 1909.973   On Thursday, November 23, 2017, 1:24:27 PM GMT+1, Carl Eugen Hoyos wrote: 2017-11-23 12:52 GMT+01:00 Marco De Angelis : > C:\S7\ffmpeg\bin\ffmpeg -i C:\S7\FTP_video\1.mp4 -i C:\S7\FTP_video\2.mp4 > -i C:\S7\FTP_video\3.mp4 -i C:\S7\

Re: [FFmpeg-user] Creat mosaic without loose quality

This is the command C:\S7\ffmpeg\bin\ffmpeg -i C:\S7\FTP_video\1.mp4 -i C:\S7\FTP_video\2.mp4 -i C:\S7\FTP_video\3.mp4 -i C:\S7\FTP_video\4.mp4 -filter_complex "nullsrc=size=1920x1080 [base]; [0:v] setpts=PTS-STARTPTS, scale=960x540 [upperleft]; [1:v] setpts=PTS-STARTPTS, scale=960x540 [upperrig

[FFmpeg-user] Creat mosaic without loose quality

Hello, I'm pretty new to video processing and I came across this usuful tool. Using the info I found on the following page I created a mosaic using four mp4 files (original frame rate is 60 fps). Create a mosaic out of several input videos – FFmpeg | | | | | | | | | | | Create a mosa

Re: [FFmpeg-user] Segmentation fault in Ubuntu 17.04 using NVENC

Found the problem. SOLVED. Ignore last thread, was a misconfiguration. Il giorno ven, 14/04/2017 alle 02.56 +0200, Marco ha scritto: > Hello, > > i updated my Ubuntu to 17.04 > > I have a self-compiled FFMPEG with this script: > https://pastebin.com/hQekxBsN > > I hav

[FFmpeg-user] Segmentation fault in Ubuntu 17.04 using NVENC

advance. Sorry for bad english Marco. ___ 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".

[FFmpeg-user] Missing bitrate information on AAC encoded videos

Hello, i use to encode the audio of my movie using libfdk_aac, but in the result file doesn't appear the used bitrate (with mediainfo, ffprobe, etc.). I encode using CBR mode, in general matroska container. I have the same problem with Handbrake. I've written to the FDK site, this is the respons

[FFmpeg-user] 2 pass encoding with hevc_nvenc

bad english. Thanks for your attention. -- Marco Diletti ___ 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

Re: [FFmpeg-user] Configure error with Android NDK clang compiler

actually an issue related to the configure script. > Note that since compilation does not succeed for all files, I > suggest you use gcc for the time being. I manually patched the configure script to bypass "check_as" and I also realized the compilation fails. That's the

[FFmpeg-user] Configure error with Android NDK clang compiler

o /var/folders/zn/45tzvzd15tnfvp4g5847x2dmgn/Tffconf.Ct6YZsBn.o /var/folders/zn/45tzvzd15tnfvp4g5847x2dmgn/Tffconf.a7i3f9zc.S /var/folders/zn/45tzvzd15tnfvp4g5847x2dmgn/Tffconf.a7i3f9zc.S:1:1: error: unknown directive .altmacro GNU assembler not found, install/update gas-preprocessor The weird thing is that *if I create a file containing .altmacro and run the same exact command it actually works*. For example: $ echo ".altmacro" > test.as $ /tmp/toolchain/bin/arm-linux-androideabi-clang --sysroot=/tmp/toolchain/sysroot -isysroot /tmp/toolchain/sysroot -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Dstrtod=avpriv_strtod -DPIC -I/sysroot/usr/include -ffast-math -funroll-loops -march=armv7-a -mfloat-abi=softfp -mfpu=vfpv3-d16 -march=armv7-a -fPIC -c -o /tmp/test.o test.as $ echo $? 0 After digging for an hour in the configure script I can't actually realize why it fails. Do you have any hint? Thank you, Marco ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user

[FFmpeg-user] rtsp_option issue

sp "rtmp://localhost:1935/live/132646"* All works well!!! Why if I specify the rtsp_transport works well and why in the first case doesn't work? Thanks, Marco ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user

[FFmpeg-user] h264 lossless grayscale

rawvideo -c:v rawvideo -pix_fmt gray16le -y out16_decoded.yuv the resulting files are not identical. Any explanation for this behavior? Am I doing something wrong? Best regards, --Marco D:\Users\Porsch\Develop\LoggingApp\tools\build\vs12\dl4log_mux>d:\Tools\ffmpeg-20150109-git-d1c6b7b-wi

Re: [FFmpeg-user] Continuation problem after video concatenation

On 20/08/14 17:59, Marco Baumgartl wrote: The video stream (duration=3176.106267) is shorter than the audio stream (duration=3221.490068). While the source video is in sync, the synchronization is lost during concatenation. I "solved" the problem by adjusting stream durations using

Re: [FFmpeg-user] Continuation problem after video concatenation

Am 20.08.2014 05:49, schrieb Qianliang Zhang: You must scale to the same size before you concat Yes, I know. The videos have the same resolution before concatenation. Marco ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org

Re: [FFmpeg-user] Continuation problem after video concatenation

11:44 TAG:language=und [/STREAM] Cheers, Marco ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user

Re: [FFmpeg-user] Continuation problem after video concatenation

, Marco ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user

[FFmpeg-user] Continuation problem after video concatenation

Hi! I need to concat screencast recordings with an intro and an outro video. Unfortunately the final video doesn't play nicely because the outro is visible before the original video is finished (while the audio of the screencast recording continues). These are my commandline options: ffmpeg