Re: [FFmpeg-user] How to get he total number of frames

stream=nb_read_frames ^^^ ^^ Regard, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above

Re: [FFmpeg-user] How to get he total number of frames

Ulf Zibis (12021-03-09): > So for correctness, ffmpeg should report packets instead frames in its > progress output line, at least with -c copy ... or please correct me. Would you insist on people saying that the mailman brings envelopes instead of letters too? Regards, -- Nicolas

Re: [FFmpeg-user] How to get he total number of frames

ave already explained. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-r

Re: [FFmpeg-user] Some Questions on Time Delta between Frame Display and Frame Capture. Thoughts?

rds, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] 1080i AVC-I 100 frame rate conversion

Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org wit

Re: [FFmpeg-user] 1080i AVC-I 100 frame rate conversion

Phil Rhodes via ffmpeg-user (12021-03-29): > For the sake of being really rigorously correct, yes, 24.0 or 24000/1001. Once again, you are wrong. The 1000/1001 factor is an artifact of color TV. -- Nicolas George signature.asc Description: PGP signat

Re: [FFmpeg-user] 1080i AVC-I 100 frame rate conversion

frame"); I think > this is the only place I see things like "3/1001". Yeah, engineers are no mathematicians. Their bad. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpe

Re: [FFmpeg-user] 1080i AVC-I 100 frame rate conversion

Phil Rhodes via ffmpeg-user (12021-03-29): > What? I have nothing to add to what I have written. Get a clue. -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mail

Re: [FFmpeg-user] 1080i AVC-I 100 frame rate conversion

Phil Rhodes via ffmpeg-user (12021-03-29): > Are you contending that there is no such thing as video at 24000/1001 fps? Are you capable of understanding a simple phrase made of less ten words? -- Nicolas George ___ ffmpeg-user mailing list ffm

Re: [FFmpeg-user] Cut part of a video, crop it and blackout parts of it

do. More computing power usually means lower bitrate for same quality. The keyword is "preset". Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/l

Re: [FFmpeg-user] How to dynamically drop frames as required to keep transcoding real time?

ealize that you are wasting your time by ignoring Carl Eugen's authoritative answer, right? If you want real help with your problem, start by stopping your top-posting. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmp

Re: [FFmpeg-user] Plotting Circles and labels on individual frames of a movie

uld be plotted > X: the x-coordinate > Y: the y=coordinate > LABEL: label for the point > > Also possibly important, there are multiple (many) particles for which > circles and labels need to be plotted on each frame. This looks like something ASS subtitles can do eas

Re: [FFmpeg-user] repair missing audio header

means to completely remove a broken audio frame. Certainly not. Fixing in this case means creating a frame packet that would decode into the same PCM data while not triggering the error. Regards, -- Nicolas George signature.asc Description: PGP

Re: [FFmpeg-user] How to filter time dependent

Ulf Zibis (12021-04-23): > I already had checked that. Unfortunately, crop has no timeline support: How would that work? Enabling or disabling crop changes the output resolution, which is not supported by libavfilter. Regards, -- Nicolas Geo

Re: [FFmpeg-user] How to filter time dependent

Gyan Doshi (12021-04-23): > Strictly,  it's supported via -noautoscale (which you reviewed), but it's > not supported by (almost) any encoder. No, it is not *supported*, it is a fragile hack. *Supporting* resolution changes will require a lot more work. Regards, --

Re: [FFmpeg-user] How to filter time dependent

Michael Koch (12021-04-23): > The crop filter could be used to change the x,y coordinates, with constant > output resolution. With timeline? Please elaborate? Regards, -- Nicolas George ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org

Re: [FFmpeg-user] Credit Notes (bulk creation)

it reads the content of the CSV (video > name and credits text) and processes them in a "more or less" > automatic way? Not with FFmpeg directly. But FFmpeg is a command-line tool, it plays well with other command-line tools. You just need to learn how to use them. -- Nicolas George

Re: [FFmpeg-user] Possible to change pitch of audio in a downloaded mp4 file?

what you tell it to do, it cannot read your mind. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link

Re: [FFmpeg-user] Possible to change pitch of audio in a downloaded mp4 file?

ion: "Adjust audio tempo.". Compare to what was suggested to you: >> Yes, this is possible with a combination of asetrate, atempo and >> aresample filters. You need to start paying attention. Regards, -- Nicolas George signature.asc D

Re: [FFmpeg-user] Decklink timestamp_align, what should it do?

Bouke (12021-05-02): > Ok, but what is ' UTC modulo’ ? An incomplete formula. Like "UTC minus": UTC minus... what? UTC modulo... "UTC modulo timestamp_align", as a whole. Then read: https://en.wikipedia.org/wiki/Modulo Regards, -- Nicolas George signature.as

Re: [FFmpeg-user] Odd video output, playing RTSP on RPI

schrotty (12021-05-02): > when i say "headless" i mean raspbian lite , without desktop. This is what people call "text mode" or "console". Headless is when there is no screen at all. Regards, -- Nicolas George signatu

Re: [FFmpeg-user] “Real Time”, “Slow Motion” and “Time Lapse”

has the same kind of difficulty than https://xkcd.com/1425/'s check whether the photo is of a bird. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mail

Re: [FFmpeg-user] Python / Qprocess misfires commands.

g, nor generic system programming. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-us

Re: [FFmpeg-user] Audio out of sync after video concatenation

filter. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.or

Re: [FFmpeg-user] 4K Way to large to stream

much smaller video, and finish much faster too. Of course, I urge you to check the result to see if it matches your expectations. And to peruse the documentation to see what these option would do before doing it. Regards, -- Nicolas George signature.asc De

Re: [FFmpeg-user] 4K Way to large to stream

top-posting is forbidden on this list. Look it up. You are unlikely to get further useful help if you do it again. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https:

Re: [FFmpeg-user] 4K Way to large to stream

to remember. Video encoding is a complex task. Your advice was sound: for archival, better keep the original. Do not recompress to gain a measly 25%. But for viewing, adapt the quality compromise to the viewing conditions. Regards, -- Nicolas George signature.asc Description: PGP signature __

Re: [FFmpeg-user] JPG/PNG images render in incorrect orientation in MP4 output file and can't be combined in same MP4 video

and PNG image files in the same input text file. That is normal: # All files must have the same streams (same codecs, same time base, # etc.). Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-u

Re: [FFmpeg-user] How to check if a youtube URL is valid before starting download?

Christian Ebert (12021-07-09): > But for writing the log into a file look into ffmpeg's -report option, that's > what it's for. You can use it that way, but it is not what it is for. My advice for this thread: don't try to run before you can walk. Regards, -- Nico

Re: [FFmpeg-user] How to check if a youtube URL is valid before starting download?

shell, file descriptors, redirections, etc., and come back to FFmpeg once this aspect of the issue is no longer a problem. For example, anybody skilled enough can tell that the reason "... 2>&1 > freezeoutput.txt" produces an empty file is that the order of the redirectio

Re: [FFmpeg-user] Click-activated Stream Recording

S. Helbig via ffmpeg-user (12021-07-12): > I'm wondering if there is a way for FFMPEG to handle click-activates > streams. I'm just experimenting at the moment. You are asking if FFmpeg contains a JavaScript engine. The answer is no. Regards, -- Nicolas George signature

Re: [FFmpeg-user] Modify i frame placement in videos

you will realize your exact need is somewhat different. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link

Re: [FFmpeg-user] Modify i frame placement in videos

On Thu, Jul 15, 2021 at 12:02 AM Nicolas George wrote: ... but learn what top-posting means, because it is forbidden here and you will not get useful help if you do it again. Regards, -- Nicolas George signature.asc Description: PGP signature ___

Re: [FFmpeg-user] Problem with concatenating converted mkv files with changed sample rate

Mike Martin (12021-07-16): > Anyone any ideas what is happening? No. But you should not be concatenating after transcoding in the first place. Use the concat filter and encode everything once. Regards, -- Nicolas George signature.asc Description: PGP signat

Re: [FFmpeg-user] -pix_fmt + pixel format conversions

le can be more suited, but I never looked at the specifics. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit

Re: [FFmpeg-user] -pix_fmt + pixel format conversions

tly to see its output. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-use

[FFmpeg-user] "proto,,option...,,:" feature

Hi. Is somebody here using the "proto,,option...,,:" feature? I am considering removing it. If you do not know what I mean, do not bother, it means you do not. Regards, -- Nicolas George signature.asc Description: PGP signature ___ f

Re: [FFmpeg-user] How to lossless crop mp4 videos

it is possible. There are tools to do it with individual images, look up jpegtran. But with video codecs that use temporal compression, a visible part of the next image can depend on a cropped part of the current image, and that makes it impossible. Regards, -- Nicolas George signature.asc De

Re: [FFmpeg-user] Decimal times to frame numbers

perty of the frame, they will be preserved or converted by filters and storage. Frame numbers are not. If you have an issue with timestamps, please be more specific about it, there is no doubt it can be solved. Regards, -- Nicolas George signature.asc Description: P

Re: [FFmpeg-user] Decimal times to frame numbers

g-list. Do not do it again if you want help. Look it up if you do not know what it means. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/f

Re: [FFmpeg-user] Decimal times to frame numbers

argue that MP4 is a crappy format designed with more concern for pleasing big investors than with concern for good design. For careful examination of the output, NUT would be the most reliable. Regards, -- Nicolas George signature.asc Description: PGP signature __

Re: [FFmpeg-user] toggle between two streams

es to protect the commas. I will grant you it is not intuitive and very annoying, but it always can be made to work. -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/

Re: [FFmpeg-user] Alternative to Dynamic Text

ap with the reading. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpe

Re: [FFmpeg-user] 5.1 + stereo

sh this? The pan filter can do that easily. https://ffmpeg.org/ffmpeg-all.html#pan-1 Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffm

Re: [FFmpeg-user] Removing parts of a video using the select filter

o get out of > sync. The select filter is very generic, and therefore not very robust. It does not update the timestamps, hence the need to update them afterwards. Furthermore, it works with whole frames, which can accumulate for audio. For your use case, consider the segment and c

Re: [FFmpeg-user] how to avoid broken pi

sh -c "dmesg" | zsh: done head -n 1 ssecem ~ $ sh -c "trap '' PIPE; dmesg" | head -n 1 [0.018123] On node 0, zone DMA32: 1580 pages in unavailable ranges dmesg: write error zsh: exit 1 sh -c "trap '' PIPE; dm

Re: [FFmpeg-user] drawtext reload=N > 1?

Gyan Doshi (12022-02-28): > This has come up before. I'll patch it to make it an interval. I do not think it is worth your effort: the cost of loading the file is negligible compared to the rest of the operations. Regards, -- Nicolas George signature.asc Description: PGP s

Re: [FFmpeg-user] Decoder output: Samples or renders?

not capable of testing this very simple question by yourself? (These are rhetorical questions.) -- Nicolas George ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above,

Re: [FFmpeg-user] Extracting forced subtitles from a DVD.

generate a concat script to access the DVD hierarchy correctly using the dvd2concat script in the tools directory. It is entirely possible that doing so would fix your issue. Also, do not re-encode the subtitles, use -c copy, it will be more reliable. Regards, --

Re: [FFmpeg-user] Extracting forced subtitles from a DVD.

concat scripts: https://ffmpeg.org/ffmpeg-all.html#concat-1 > > On 2022.0428, at 16:19, Michael Mueck wrote: Please remember that top-posting is strictly forbidden on this list. Regards, -- Nicolas George signature.asc Description: PGP signature __

Re: [FFmpeg-user] Can ffmpeg calculate the min and max bitrate of a video?

clear for you: you should not run a script you found on a random web site, it would be a huge security risk. You need to understand the script and adapt it to your needs. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ff

Re: [FFmpeg-user] Multiple parts of a video

Cecil Westerhof via ffmpeg-user (12022-05-29): > I am going to ignore you. Then I am going to ignore you. > Before I CAN USE concat I have the create the n cuts I need to put > into the concat. And it is easy to do. But do not count on my help. -- Nicolas George signature.asc De

Re: [FFmpeg-user] ffprobe does not render sdes tag field properly

utputs. It seems your problem is that your terminal does not work in UTF-8. But you did not say which terminal you use, so I cannot help further. Regards, -- Nicolas George ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/m

Re: [FFmpeg-user] ffprobe does not render sdes tag field properly

han the issue of international characters. But you did not tell how exactly you get this output, so I cannot say more. I suspect you are missing a lot of theoretical background necessary to achieve your goals. > Am 2022-06-03 11:36, schrieb Nicolas George: Top-posting is forbidden on this mail

Re: [FFmpeg-user] concat audio files

Michael Koch (12022-06-11): > I always get this error message: > Stream specifier '' in filtergraph description [0][1]concat=n=2:a=1 matches > no streams. Where did you find this "[number]" syntax, and has it ever worked for you? Regards, -- Nicolas George s

Re: [FFmpeg-user] concat, "Too many invisible frames"

x27;t that, then why? I suspect some formats just have too complex features to allow for simple concatenation. concat is not guaranteed to work with streams that have different parameters. There is no way around that without transcoding. To normalize, use the concat filter and transcode. Sorry

Re: [FFmpeg-user] concat, "Too many invisible frames"

n't work on these > files what I can see/implement ... (?) > > $ ffmpeg -y -i $src1 -c copy -bsf:v h264_mp4toannexb -f mpegts $dst1 > > [h264_mp4toannexb @ 0x55c9452bcc80] Codec 'vp9' (167) is not > supported by the bitstream filter 'h264_mp4toannexb'. > Suppor

Re: [FFmpeg-user] encode to RAW video

cles, what you describe is not possible on top of being useless. What happens is just that the second -c:v option will override the first one. Regards, -- Nicolas George ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailma

Re: [FFmpeg-user] ffserver

rds people around you.) I would also suggest you use a mail software that does not break threads, but it will not matter much anyway. -- Nicolas George ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user

Re: [FFmpeg-user] Piping from FFmpeg to FFplay

Michael Koch (12022-11-13): > I can't find - without any following characters in the FFmpeg or FFplay > documentation. This is not specific to FFmpeg: https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap12.html#tag_12_02 Regards, -- Nicolas George signature.asc

Re: [FFmpeg-user] Resizing ffplay window with fixed aspect ratio

art. -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] Write audio volume info to file

FFmpeg. > On Thu, Feb 16, 2023 at 1:44 PM Michael Koch > wrote: Top-posting is forbidden on FFmpeg lists; if you do not know what it means, look it up. Regards, -- Nicolas George ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffm

Re: [FFmpeg-user] No compiled with -fPIC for libavcodec/aarch64/vp9mc_16bpp_neon.S

file, for which C compilation do not apply. > On Tue, Sep 12, 2023 at 5:22 PM Reindl Harald > wrote: Top-posting is forbidden on these lists. If you want help, stop doing it; look it up if you need. Regards, -- Nicolas George ___ ffmpeg-user m

Re: [FFmpeg-user] missing meta data in ffprobe output from mp4 format

Greg Oliver (12023-10-20): > I have never used ffprobe before, but I have seen countless messages > on this left with regards to it not being closely maintained and > recommendations to use other software to query media information. It is the other way around. Regards, -- Nicol

Re: [FFmpeg-user] Requesting colormatrix advice

ly, both Phil and Mark have repeatedly shown they had no intention of making any effort themselves, their policy is to expect somebody to do the job for them gratis and insult the project when that does not happen. Regards, -- Nicolas George signature.asc Descripti

Re: [FFmpeg-user] Seeking Efficient Video Redaction Using FFMPEG with Limited Memory Usage

lot more, because larger graphs tend to be deeper too. This is not unavoidable, this part would be rather easy to optimize. -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.

Re: [FFmpeg-user] framecrc

Mark Filipak (12023-11-13): > If input PTSs & DTSs shouldn't be changed, then what use is > '-bsf:v setts=pts=:dts='? They are for people who know what they are doing. -- Nicolas George ___ ffmpeg-user mailing li

Re: [FFmpeg-user] Which file formats can hold image subtitles (dvdsub) without other streams

bbb (12023-12-04): > When I try to use mkv it insists on having a > video stream (... figures). Hi. I do not observe that. Please show your command line. Regards, -- Nicolas George ___ ffmpeg-user mailing list

Re: [FFmpeg-user] kmsgrab and audio problem

ratis and without any warranty? You are owed nothing here, you are asking for help, so please keep it civil. And do not top post. -- Nicolas George ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To un

Re: [FFmpeg-user] FFMPEG filter_complex overlays work well on windows but generates error on Linux and OSX

onsole output. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-use

Re: [FFmpeg-user] Could not find codec parameters for stream 1 (Audio: pcm_mulaw, 8000 Hz, mono, 64 kb/s): unspecified sample format

Mark Filipak (12020-04-08): > Try this, Ben: > > ffmpeg -loglevel warning Ben, do not follow that advice: you will not get help with reduced log level. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-use

Re: [FFmpeg-user] Preparing to compile ffmpeg from git source -- stuck

d when they are wrong. It's amazing how some people want help but don't respect the expertise of the people they want help from. -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http

Re: [FFmpeg-user] Stuck preparing to compile ffmpeg from git source

.ffmpeg.org/ticket/8612 and we can see that Richard made considerable efforts in trying to reproduce the bug, without success, with an up-to-date version. And this is the real reason the bug was closed. Regards, -- Nicolas George signature.asc Description: PG

Re: [FFmpeg-user] How to extract the very starting frame for every second on a live videi input?

setpts to finely adjust the phase. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-

Re: [FFmpeg-user] How to extract the very starting frame for every second on a live videi input?

ple would be fine. Have you read the doc? What did you try? -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link abo

Re: [FFmpeg-user] How to extract the very starting frame for every second on a live videi input?

emb-pro (12020-04-13): > This is also one of my trials to get the output. That's not the fps filter. What have you tried to get the fps filter to work? Have you read the its documentation and that of setpts? Regards, -- Nicolas George signature.asc Description: PGP s

Re: [FFmpeg-user] How to extract the very starting frame for every second on a live videi input?

emb-pro (12020-04-14): > Hi Nicolas, If you want help, start by helping yourself. Use the advice I gave you in the previous mails or don't, but it is there. -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mail

Re: [FFmpeg-user] Muxing multiple files and concatenating those outputs

uot; out_3.wav > > ffmpeg out_1.wav out_2.wav out_3.wav final.wav > > My goal is to syntactically accomplish this with one ffmpeg string (not > pipes, ; or && bash syntax). > > I would appreciate any insight - I have tried everything I can find / think > of

Re: [FFmpeg-user] ffmpeg architecture question

f you want to overlay a clock on a 24000/1001 fps video, you could have a frame at t =~ 0.918, 0.959, 1.001, but we do not want a frame at t = 1 for the change of the clock. Unfortunately, this is not yet exposed to users as options. Regards, -- Nicolas George signature.asc Descr

Re: [FFmpeg-user] [MPlayer-users] Windows command line & log

Mark Filipak (12020-04-29): > By the way, I had not "already been told" He has indeed already been told, by me, twice. > I'm sorry you feel that way. He is not sorry enough to change. -- Nicolas George signature.asc Descr

Re: [FFmpeg-user] v360 in_pad

t, where it can be discussed. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpe

Re: [FFmpeg-user] [ffmpeg] preserving metadata from .mp4 to .jpg/.png frames

e > Aren't some of those just file system metadata, not in the actual JPG > itself? The "File" fields, obviously. But I very much doubt that a file system would store both a "File Modification Date/Time" and a "Modify Date", do

Re: [FFmpeg-user] [ffmpeg] preserving metadata from .mp4 to .jpg/.png frames

ile Inode Change Date/Time : 2020:05:22 11:51:00+02:00 Spot the difference with your version? Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listin

Re: [FFmpeg-user] 'key' frame only decoding

frame rate, but keyframes are not guaranteed to be constant frame rate. Therefore, ffmpeg will duplicate frame as needed to meet the constant frame rate, by default the same as the input. -vsync 0 disables that: it tells ffmpeg to not bother about timestamps. Regards, -- Nicolas George signature

Re: [FFmpeg-user] ffprobe different outputs for file input and binary data input

Ming Tu (12020-06-09): > cat Y001BAQ9k3SU-140.mp4 | A lot of MP4 files require reading something at the end first. It cannot work if the file is not seekable. Try to apply qt-faststart to see if it helps. Regards, -- Nicolas George signature.asc Description: PGP signat

Re: [FFmpeg-user] Concatenate multiple (<10) movies with xfade filter

Paul B Mahol (12020-06-10): > xfade filter can not work with concat demuxer output. That would be a bug. Please report it properly. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-u

Re: [FFmpeg-user] Concatenate multiple (<10) movies with xfade filter

Paul B Mahol (12020-06-10): > How so it is a bug? xfade needs 2 inputs. > concat demuxer gives single output. A filter that "can not work with" the output of another filter, your words, is a bug. Filters should all work together seamlessly. Regards, -- Nicolas George

Re: [FFmpeg-user] Concatenate multiple (<10) movies with xfade filter

Paul B Mahol (12020-06-10): > It can work with its output just fine, just not in way user imagined. So your statement: | xfade filter can not work with concat demuxer output. was actually wrong? -- Nicolas George signature.asc Description: PGP signat

Re: [FFmpeg-user] Tracking ffmpeg instance by its logs

need. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".

Re: [FFmpeg-user] combining concat filter with closed caption extraction

x27; is just another input, like B.ts. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above,

Re: [FFmpeg-user] combining concat filter with closed caption extraction

ating the file C.mkv in the first pass, can the lavfi > filter use the video output stream of the concat filter directly? My answer is the same: 'movie=C.mkv[out0+subcc]' is just another input, like B.ts. You can see that because they both have -i in from of them: they are the same. R

Re: [FFmpeg-user] combining concat filter with closed caption extraction

Leo Butler via ffmpeg-user (12020-06-12): > Nicolas George writes: > > >> Rather than creating the file C.mkv in the first pass, can the lavfi > >> filter use the video output stream of the concat filter directly? > > > > My answer is the same: 'movie

Re: [FFmpeg-user] No rule existing for libavfilter/all_channel_layouts.inc

Ulf Zibis (12020-06-17): > Would it make sense, that configure would do that job automatically? No. The dependencies do not change like that when configure is called, and doing so would waste an enormous amount of time for people who reconfigure and rebuild the same tree. Regards, -- Nico

Re: [FFmpeg-user] Sound level measuring on the 2nd audio stream

ch in its own volume detection filters, (3) add the necessary to get the result in ffprobe's output. http://ffmpeg.org/ffmpeg-all.html#amovie http://ffmpeg.org/ffmpeg-all.html#Filtergraph-description Regards, -- Nicolas George signature.asc Description: PGP signature

Re: [FFmpeg-user] Audio sample format in alsa?

then, when it works, transpose this into ffmpeg options. Or you could let ALSA make automatic conversions by using plughw instead of hw. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-use

Re: [FFmpeg-user] Audio sample format in alsa?

lughw, you tell ALSA to insert the "plug" plugin before the actual device, to do automatic conversion. Therefore, it accepts any format, number of channels, sample rate, but there is a conversion happening and you do not know what it is. Regards, -- Nicolas George

Re: [FFmpeg-user] 'ALSA buffer xrun' errors only when running as systemd

x giving different priorities to processes detected as interactive and processes detected as background. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailm

Re: [FFmpeg-user] Virtual camera

eo driver: https://www.kernel.org/doc/html/v4.12/media/v4l-drivers/vivid.html and use ffmpeg to feed it, but I have not managed to get it to work. Not a FFmpeg issue. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mai

Re: [FFmpeg-user] Remote path of source files

e URL. I strongly suggest you search how to show the real URL with your browser of choice and enable that option. You'll discover the URL is probably http://www.mysite.it/myfolder/, or possibly https://. Regards, -- Nicolas George signature.asc Description:

Re: [FFmpeg-user] Remote path of source files

e could do except unreliable hacks. Printf patterns, %d and such, are supported. Regards, -- Nicolas George signature.asc Description: PGP signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To uns

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