Re: [FFmpeg-user] FFmpeg Architecture

> Why you insist on 'should' is question for you, I doubt we will ever get > the answer. > My impression is he's looking for a way to use/turn a swiss army knife as/into a scalpel, if this analogy makes sense. ___ ffmpeg-user mailing list

Re: [FFmpeg-user] FFmpeg default processing(invisible processing)

> I understand that RDD-9 is necessary, but even after reading the article, I > don't know where RDD-9 is. > RDD 9 is Sony's Registered Disclosure Document for the XDCAM file format [1]. You can download the document from IEEExplore [2] if you have an account (e.g. via a SMPTE membership,

Re: [FFmpeg-user] FFmpeg default processing(invisible processing)

> > @Shuto: I'm sure you've noticed already that you will want to adjust the > frame rate (option "-r"). But I'm not sure if that does also require an > adjustment of the -bufsize . > @Bouke: and it works without explicitly specifying a GOP size of 12 (for 50Hz 15 for 60-ish Hz) and a

Re: [FFmpeg-user] FFmpeg default processing(invisible processing)

> > Trust me, this command (besides audio parsing, depending on sources) has > made thousands of broadcast compliant files over here, where XDCAM is also > mandatory. > Does that mean the issue mentioned here: https://www.mail-archive.com/ffmpeg-user@ffmpeg.org/msg26313.html (and its follow-up

Re: [FFmpeg-user] ffmpeg and use of the ildct flag in progressive encoding

Sometimes it’s wanted / needed to have all files ’the same’. > If that is interlaced, it’s interlaced. Codec should say ‘interlaced’, no > matter the actual content. > > For Avid media, that might (depending on the version of MC) be important > for a ‘fast import’, or omitting adapters you don’t

Re: [FFmpeg-user] ffmpeg and use of the ildct flag in progressive encoding

The ildct flag appears only to be making the output file "think" it is > interlaced, when it is, in fact, progressive. It does not seem to be doing > anything to change the footage (quality-wise and it's still progressive). > Since someone other than myself set the flag on this command, I am

Re: [FFmpeg-user] Concat demuxer avoid injecting additional silent packets

> > Is there a way to avoid having FFmpeg inject those additional silent > packets while concatenating? > > Here is my FFmpeg information: […] > Is your audio encoded using AAC? Your uncut console output would tell had it not been omitted… therefore, please make sure to always provide the

Re: [FFmpeg-user] How to concat two videos with same size but different source?

ANYWAY BACK ON TOPIC: > This does not really address what I am asking about here, namely how to use > ffmpeg to paste together (concatenate) videos from different sources with > the > same geometry into one seamless result video. > So far what I have tried with the two videos I have as an example

Re: [FFmpeg-user] Image to Video conversion

> > I have an .bmp Image with resolution 1600x1300x24-bit, each file size comes > around 6Mbps, I have 30 such files (Image-1 Image-30) in a directory. > I converted those images to a video @ 30fps for length of 1 second using > the below ffmpeg command, the video file size turned out to be

Re: [FFmpeg-user] ffmpeg MP4/x264 output colours change when input source is different resolution (bug?)

> > Is colorspace and color matrix not the same? If not, how can color > matrix be specified in the command line? > How can white point be specified in the command line? > No, it's not the same. Personally, I prefer to use color representation instead. But that wouldn't help in this discussion.

Re: [FFmpeg-user] ffmpeg MP4/x264 output colours change when input source is different resolution (bug?)

> I know enough to say I can't wait until everyone can unify under a single > colour space/profile, scrap YUV, scrap chroma subsampling and go with RGB. > Disk space and bandwidth is getting cheaper and cheaper after all. Unfortunately it’s not that simple, please see below. Haha, okay let's

Re: [FFmpeg-user] Size of 10-bit 4:2:2 video streams?

I‘d rather like to start by asking the much simpler question whether the processed files can be played back at all, and if so, are they visually identical and are all other parameters identical to the source file, or are they different in any way? If they are visually identical, are there any

Re: [FFmpeg-user] remap with pixel interpolation

multiply the values in the mapping files by 16 so that > the range is 12800x9600, and use the 4 least significant bits for pixel >>> interpolation. >>> >>> >>> Very bad suggestion. >> >> Better make remap filter use float pixel format for map files. >> > > Which image format supports float

Re: [FFmpeg-user] An object oriented video notation

> >> Writing the docs took a long time and lot of work. Is there any appetite >> here for them? >> > > I'd like to read it. > +1 ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit

Re: [FFmpeg-user] Preserving PAL 720x576 resolution

> I don't like it, I definitely do not doubt the relevance (I did look into > the issue several times), I just want to point out that once the issue > is fixed (from our pov), it is possible that the requested feature > (remuxing of "interlaced" j2k) will still not work, and never will. > > Otoh,

[FFmpeg-user] Preserving PAL 720x576 resolution

> Is your input really 720x576 or is it maybe interlaced content > encoded as two separate frames with height 288? This is not > yet supported by FFmpeg at all without filter insertion, it is > possible that we will never write such atrocities. > > Carl Eugen > Like it or not, it's a SMPTE

Re: [FFmpeg-user] Drop frames during framemd5 calculation of DPX files

> > > can you explain what causes misdetected frame rates? > > The dpx files store a frame rate that is ignored by the demuxer (and > therefore unused for the default output frame rate) but used to calculate > timestamps on decoding, leading to frame drops. > > You mean it's drop-frame time code?

Re: [FFmpeg-user] No audio while plying ffplay

Coming back to the original question (using the original link posted) C:\FFMPEG>set SDL_AUDIODRIVER=directsound C:\FFMPEG>ffplay http://hindiabp-lh.akamaihd.net/i/hindiabp1new_1@192103/index_300_av-b.m3u8 works for me. Which is to say I get video and audio output.

Re: [FFmpeg-user] How to properly record sound when capturing web cam?

> I have tried this one: > > ffmpeg -y -f v4l2 -thread_queue_size 800 -video_size 800x448 -i > /dev/video0 -f alsa -thread_queue_size 1 -ac 1 -ar 14400 -i default > -q:v 5 output.webm; mplayer output.webm; ls -l output.webm > > This might not have the least to do with all of this, I just want

Re: [FFmpeg-user] h264_vaapi missing frames

> > > Are you saying I'm doing something wrong with capturing? > > I was merely suspecting your output device could be set to 60Hz, but you're only capturing every other frame when setting your ffmpeg input to 30Hz. I might be wrong. ___ ffmpeg-user

Re: [FFmpeg-user] h264_vaapi missing frames

> Unfortunately Mark's suggestion doesn't seem to have an impact. > > As you hopefully can see here: > https://s.natalian.org/2018-03-23/1521768226.mp4 > > The mouse still doesn't move smoothy across the screen. Hence I feel > it's dropping frames! > > Simple question: If you only capture a

Re: [FFmpeg-user] ProRes encoding: Question about FFmpeg docs

2018-03-11 11:50 GMT+01:00 Phil Rhodes < phil_rhodes-at-rocketmail@ffmpeg.org>: > I'm not sure what the practical difference is between the _aw and _ks > encoders is, and I'm not sure it's documented anywhere. Still, if it helps, > I've been using the _ks version for some time to produce

Re: [FFmpeg-user] Audio not playing in Quicktime Player

> > But as said, I am not convinced that QT is the ideal playback software > for mp4. > Regardless whether it is or not, there is some spec in QuickTime Player which requires .mp4 containers to have h.264 (and obviously now also h.265) video, and aac audio. OTOH I can't remember where I got this

Re: [FFmpeg-user] ffmpeg m2ts

George, please do respect the etiquette of this mailing list provided at http://ffmpeg.org/contact.html#MailingLists . Thank you. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit

Re: [FFmpeg-user] FFMPEG's MXF container support for DNxHR with Avid MC?

Hi Alan, What should I expect in terms of being able to record or playback DNxHR in > MXF containers using FFMPEG and the compatibility of those clips in major > NLEs? > My personal take: Don't rely on anything. If you absolutely require using Avid MC, and there are major contraints, let MC do

Re: [FFmpeg-user] Muxing audio-only MXF

Am Freitag, 1. Dezember 2017 schrieb Robert Krüger : > Hi Kieran, > > On Thu, Nov 30, 2017 at 5:39 PM, Kieran O Leary > > wrote: > > > On Thu, Nov 30, 2017 at 4:38 PM, Kieran O Leary > > > wrote: > > > Hi, > > > > >

Re: [FFmpeg-user] Amerge trouble

> And after that promote it to 24 bits again. > Is there a way to force the channel split to work in 24 bits? > (No idea how to squeeze pcm_s24le into the filter_complex part…) > A more knowledgeable person than myself would need to jump in here. When I use "aformat=sample_fmts=s24" at the

Re: [FFmpeg-user] Amerge trouble

or if you want a single audio stream with 5 channels: ffmpeg -i HD422.mxf -i 8ch.wav -c:v copy -c:a pcm_s24le -filter_complex \ "[1:a]channelsplit=channel_layout=7.1[a0][a1][a2][a3][a4][a5][a6][a7],\ [a1][0:a:1][a0][0:a:0][0:a:2]amerge=inputs=5[a]" \ -map 0:v -map "[a]" -timecode 01:00:00:00

Re: [FFmpeg-user] Amerge trouble

This works as intended: ffmpeg -i HD422.mxf -i 8ch.wav -c:v copy -c:a pcm_s24le -filter_complex \ "[1:a]channelsplit=channel_layout=7.1[a0][a1][a2][a3][a4][a5][a6][a7]" \ -map 0:v -map "[a1]" -map 0:a:1 -map "[a0]" -map 0:a:0 -map 0:a:2 \ -timecode 01:00:00:00 testmerge00.mxf -map "[a2]" \ -map

Re: [FFmpeg-user] Amerge trouble

2017-11-18 15:12 GMT+01:00 Bouke / VideoToolShed : > Hi guys, > Trying to do some audio patching from multiple input files, and output a > QT or MXF with a poly soundtrack. > Now this turns out to be a hell of a job, I can’t grasp the logic on how > the patching works. >

Re: [FFmpeg-user] Windows 10, ffmpeg concat/demux is slow... part 2

> > My laptop only has USB 3, and 3.1 gen 2 ports. My SSD is in a drive bay > connected to the USB 3.1 gen 2 port, and the reader unit is capable of > 10Gbps connections. > Have you tried using TeraCopy for a comparison? ___ ffmpeg-user mailing list

Re: [FFmpeg-user] Windows 10, ffmpeg concat/demux is slow... part 2

> So I feel like I am missing something. Kevin, back then you have been asked if you had turned off all security monitoring for the target folder, such as Windows Defender, to which you haven't replied. ffmpeg is per se not a signed application, which could make utilities like such suspect

Re: [FFmpeg-user] Why is concat so slow on a powerful machine?

> Back on-topic, Kevin; if you cannot even copy a file from one directory to > another at reasonable / expected speed; I too would recommend checking your > hardware, and > any likely bits of software- eg do you have some aggressive antivirus > intercepting / "quarantining" all disk writes? > >

Re: [FFmpeg-user] Conversion wav -> mp3 -> wav

Am Donnerstag, 22. Juni 2017 schrieb Rodolfo Medina : > Hi all. > > As an experiment, I converted a .wav file to mp3 format and then back into > wav > again, just to see what happens: > > $ ffmpeg -i file1.wav file1.mp3 > $ ffmpeg -i file1.mp3 file2.wav > > I've always heard and read that the

Re: [FFmpeg-user] Driver does not support the required nvenc API version

Am Samstag, 13. Mai 2017 schrieb Raymond Russell : > > > On May 12, 2017, at 4:37 PM, Daniel <5960...@gmail.com > > wrote: > > > > Hello everyone > > > > I am new to ffmpeg and i am trying to encode some video to x265 with > following command : > > ffmpeg -i video.mp4 -c:v

Re: [FFmpeg-user] Slight blur on converted video

> > > Do you see the blurring only using the Adobe decoder or also when decoding > with FFmpeg? > > Doesn't "-profile:v 3" increase the quality? > Please remove qscale from your command line, it has no effect on prores > encoding. > IIRC the quality of AME was described to be better than ffmpeg's

Re: [FFmpeg-user] Slight blur on converted video

> W dniu 2017-03-24 o 12:04, Dave pisze: > >> To answer your suggestions Chronek: >> >> I tried encoding with your suggested command line it was still pretty >> much the same. >> >> 1) I downloaded a fresh copy of ffmpeg and compiled it and still had the >> same results >> 2) I am not really in a

Re: [FFmpeg-user] Slight blur on converted video

chronek : > We still do not know what is his colorspace of input video, if it is only > yuv420p then conversion to prores_ks profile:v 1 (yuv422p10) will be losy, > not to mention that prores is itself losy, why not use native yuv420p? If > you really need change codec why not use utvideo it can

Re: [FFmpeg-user] Slight blur on converted video

2017-03-23 18:12 GMT+01:00 Erik Dobberkau <erik.dobber...@gmail.com>: > ffmpeg -y -i in.mxf -r 25 -vf settb=1/25 -flags +ilme+ildct -timecode >> 00:00:00:00 -acodec pcm_s16le -filter_complex >> "[:1:a][:2:a]amerge=inputs=2[aout]" >> -map "[aout]" -m

Re: [FFmpeg-user] Slight blur on converted video

> > ffmpeg -y -i in.mxf -r 25 -vf settb=1/25 -flags +ilme+ildct -timecode > 00:00:00:00 -acodec pcm_s16le -filter_complex > "[:1:a][:2:a]amerge=inputs=2[aout]" > -map "[aout]" -map 0:0 -qscale:v 6 -vcodec prores_ks -profile:v 1 > -video_track_timescale 25 -copytb -1 out.mov > > This will give you

Re: [FFmpeg-user] movement on ffmpeg .R3D v4 support?

Hi Rob, don't you think it'd be much more effective to get a H.264 recorder to capture proxies while shooting? Or something that creates DNx or ProRes with a baked LUT that can be easily transcoded to proxies? Erik ___ ffmpeg-user mailing list

Re: [FFmpeg-user] mp4 concatenation (muxer) problems -- invalid output?

Hi John, just to make sure I get this right, are you trying to build an advanced version of Vantage Camera Ingest? Have fun then... ;-) Let's go trough this step by step to find out if your approach makes sense: Obviously you're trying to concat recordings from a DSLR. -> Why are there gaps in

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,

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

Re: [FFmpeg-user] EVS compatible AVC Intra 100

> > That generates a mxf which seems to be correct with most software but I > contacted EVS and the problem is they require an mxf with just one body > partition in order to work. > > It would be nice if somebody who understands this sentence could > open a (complete!) enhancement request on trac.

Re: [FFmpeg-user] EVS compatible AVC Intra 100

Am Mittwoch, 25. Januar 2017 schrieb Victor Diez : > > Thanks for the answers. > > > I didn't paste the output because I did not get any error. I already > checked with EVS and just wanted to make sure I got the "standard"AVC Intra > 100 parameters right and that I was not making any mistake

Re: [FFmpeg-user] Writing EXIF metadata

Am Dienstag, 25. Oktober 2016 schrieb Robert Krüger : > Hi, > > is it possible to add EXIF metadata like title or description to a JPG or > PNG image using ffmpeg on the command line (or via api but that's probably > for the other list)? > Hi Robert, if not, maybe exiftool is a viable

Re: [FFmpeg-user] when to use 10bit

Am Donnerstag, 20. Oktober 2016 schrieb George Nistor : > Hello Ffmpeg-users, > > I have a general question. > When makes sense to use 10 bit for video encoding? > > Does it make any difference at high kbps? For more than 3000 kbps it is > seen a difference > in more quality (acuracy) of the

Re: [FFmpeg-user] DeckLink Output Controls

Am Dienstag, 11. Oktober 2016 schrieb Reuben Martin : > > > I’m not sure there is a difference between 20 and 24 bit audio (in > reguards to > the bit allocation within the signal) since 20 bit is usually padded > inside of > a 24 or 32 bit word size. > > Both SD and HD SDI video use AES-3 audio

Re: [FFmpeg-user] Selecting/dropping frames without re-encoding

> Hello, > > I have a camera recording which is an MXF file and the codec is DNxHD > I suppose it is a single-frame codec so literally it is a container of > images which are independently stored in the file. > Recordings are taken at 50 fps progressive. Hi Michail, this is a TV standard,

Re: [FFmpeg-user] MXF file from ikegami gfpack

> > > You can import the spanned OP-Atom files (A1) to Premiere > > Can you import just A2 (and not A1)? > > Carl Eugen > Absolutely. Erik ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To

Re: [FFmpeg-user] MXF file from ikegami gfpack

Am Montag, 19. September 2016 schrieb Carl Eugen Hoyos : > 2016-09-18 23:54 GMT+02:00 Erik Dobberkau <erik.dobber...@gmail.com > <javascript:;>>: > > Am Sonntag, 18. September 2016 schrieb Carl Eugen Hoyos : > > > >> 2016-09-18 5:58 GMT+02:00 afellah

Re: [FFmpeg-user] MXF file from ikegami gfpack

Am Sonntag, 18. September 2016 schrieb Carl Eugen Hoyos : > 2016-09-18 5:58 GMT+02:00 afellah > >: > > > I have an Audio file from ikegami gfpack disk, below are the media info > > > > >

Re: [FFmpeg-user] ikegami MXF issue while using ffmpeg

2016-09-03 22:05 GMT+02:00 afellah : > > Guessed Channel Layout for Input Stream #2.0 : stereo > Input #2, mxf, from 'A1.MXF': > Metadata: > uid : 0fdc43a0-eff5-f5e4-dd34-b16f3f89bfa0 > generation_uid : ed27396c-fb10-cdf0-d46f-555b17013117 >

Re: [FFmpeg-user] ikegami MXF issue while using ffmpeg

> > Just repeat what you did with the video for the audio... just make sure > your filterchain order matches your input file order, like: > > ffmpeg.exe -i V1.MXF -i V2.MXF -i A1.MXF -i B1.MXF -i A2.mxf -i B2.MXF > -filter_complex "[0:v:0][2:a:0][4:a:0][1:v:0][ >

Re: [FFmpeg-user] ikegami MXF issue while using ffmpeg

Hi! 2016-09-03 17:31 GMT+02:00 afellah : > > i succeeded to join the 2 video with the following command. > *ffmpeg.exe -i V1.MXF -y -f mpegvideo -i V2.MXF -filter_complex > "[0:0][1:0]concat=n=2:v=1[out]" -map "[out]" -top 1 -vcodec dnxhd -b:v > 120M > out.MXF* > > i

Re: [FFmpeg-user] ffprobe frame rate / time base

Hi! 2016-08-24 9:59 GMT+02:00 Carl Eugen Hoyos : > > Which information do you think is missing? > Like, the encoder used to generate the sample I have provided? Not necessary because all paffs are created equal? Do you think/know it's a general issue with paff-encoded video?

Re: [FFmpeg-user] ffprobe frame rate / time base

Hi! 2016-08-24 8:04 GMT+02:00 Carl Eugen Hoyos : > > I believe there is an issue, I opened ticket #5794. > Okay. Should we continue the discussion on the ticket then, or here? I will try to supply you with as much information as I can get hold of. > There are at least two

Re: [FFmpeg-user] Piping output of ffmpeg into ffmbc

2016-08-22 23:39 GMT+02:00 Keith Reilly <krei...@retroreport.com>: > On Sat, Aug 20, 2016 at 7:41 AM, Erik Dobberkau <erik.dobber...@gmail.com> > wrote: > > > 2016-08-19 22:43 GMT+02:00 Keith Reilly <krei...@retroreport.com>: > > > > > wrote: >

Re: [FFmpeg-user] Piping output of ffmpeg into ffmbc

480p, PAR 1:1 > > DAR > > > > > 4:3, > > > > > > 29.97 fps > > > > > > > > > > > > Stream #0.1(und): Audio: pcm_s16le, 44100 Hz, 2 channels, > s16, > > > 1411 > > > > > kb/s > > > &g

Re: [FFmpeg-user] ffprobe frame rate / time base

2016-08-19 10:35 GMT+02:00 Carl Eugen Hoyos <ceffm...@gmail.com>: > Hi! > > > Am 18.08.2016 um 11:06 schrieb Erik Dobberkau <erik.dobber...@gmail.com > >: > > > > It seems for H.264 encoded *interlaced* video the frame rate displayed by > > ffprobe -s

Re: [FFmpeg-user] Piping output of ffmpeg into ffmbc

t; > > [pad @ 0x7fde69c03cc0] w:720 h:486 -> w:720 h:512 x:0 y:26 > > > > color:0x108080FF[yuva] > > > > > > > > Output #0, mxf_d10, to '/Volumes/RR295-KENNEDY_1/_Youtube.mxf': > > > > > > > > Metadata: > > > > > > >

Re: [FFmpeg-user] Piping output of ffmpeg into ffmbc

Hi Keith, you don't need ffmbc to create IMX MXF OP1a that can be read by Avid, you can do this with ffmpeg alone. I guess you also mean AMA linking, not fast importing, right? (I'm testing on MC 7.0.5 here and the only way to get an MXF file into the project is AMA linking) What ffmpeg can't do

[FFmpeg-user] ffprobe frame rate / time base

Sorry for bringing this up again, but the information on the Web is way to ambiguous... It seems for H.264 encoded *interlaced* video the frame rate displayed by ffprobe -show_streams -i [inputfile] is still twice the actual frame rate, is this correct (i.e. 1080i25 video is displayed as having

Re: [FFmpeg-user] Best way to scale interlaced video

Mark, thank you for sharing your insight here. Does the same method (only vice-versa) also apply for upscaling SD footage to HD? Best, Erik ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To