June 2024 - ffmpeg-user - lists.ffmpeg.org

Big missmatch In format duration (ffmpeg V6)
by Avraham Sikirov 22 Jul '24

22 Jul '24

Hey, I am trying to upgrade from ffmpeg v5 to v6, I have noticed one video that has big increase in format duration time This is the command I use: ffprobe -v error -print_format json -show_format -show_streams too-many-packets.mp4 Link to video and outputs: https://drive.google.com/drive/folders/1BT6NMqZ2pSd-shbu-hok-2-Gaihn0Av2?us…

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Convert audio to CSV
by Michael Koch 05 Jul '24

05 Jul '24

Hi, is it possible to convert an audio waveform to a CSV list? I want to insert 2048 samples of a waveform into the C source code for a microcontroller. Michael

8 15

key frame
by Mark Filipak 30 Jun '24

30 Jun '24

Hello All, I'm considering buying professional video software to evaluate and analyze FFmpeg trims and splices and for troubleshooting. My objective is to improve my edits, and to improve FFmpeg. I'm retired, I have plenty of time, I have plenty of money. From here: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/uc_system/design/guides… "I-frames are also known as key frames because their content is independent of any other frames and they can be used as a reference for other frames." If "key frame" is simply another name for an I-frame, why are there two names? pdr0 & Balling at trac.ffmpeg.org hint that key frames are specific I-frames with specific methods but they don't elaborate and I don't want to burden them. I'd appreciate an explanation of 'key frame', or a link to an existing explanation of course. All I can find is keyframe animation, which of course is a technique, not an MPEG method. Thank you, Mark.

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Find all IDR frames of a video with respective timestamps
by Richard Bartczak 28 Jun '24

28 Jun '24

Hello, nothing I have found. Neither via ffprobe, nor via ffmpeg, I have found a solution. Gloster

2 1

Remove "DOVI configuration record" from h265 streams
by Oliver Fromme 27 Jun '24

27 Jun '24

I've got another question about HDR re-encoding. There are "hybrid" files that contain both Dolby Vision (DoVi) and HDR10 (or even HDR10+) metadata at the same time. I don't care about the DoVi metadata, so I just remove it. I only encode with the HDR10 metadata. The resulting files play fine with mpv. However, when I look at the resulting file (h265 within mkv) with ffprobe, it still displays a side_data record for the video stream that has the type "DOVI configuration record". Excerpt of ffprobe for the video stream (JSON format): 'streams': [ { [...] 'codec_long_name': 'H.265 / HEVC (High Efficiency Video Coding)' [...] 'side_data_list': [ { 'bl_present_flag': 1 'dv_bl_signal_compatibility_id': 1 'dv_level': 6 'dv_profile': 8 'dv_version_major': 1 'dv_version_minor': 0 'el_present_flag': 0 'rpu_present_flag': 1 'side_data_type': 'DOVI configuration record' } ] [...] } The video is definitely *not* Dolby Vision, it does not contain any BL or RPU data or anything else. Therefore I would like to get rid of that "DOVI configuration record" because it might confuse certain players. How to do that? During my research I noticed that ffmpeg has a multimedia filter named "sidedata". It's supposed to be able to delete side data from frames. However, the documentation (manual page) refers to the AVFrameSideDataType enum in libavutil/frame.h that conatins all AV_FRAME_DATA_* values. But that enum does not contain an entry for DoVi configuration records. So it must be something else. Best regards Oliver

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ffmpeg wav lossless to youtube mov?
by Zathras Yes 27 Jun '24

27 Jun '24

Hello, what is the command to put a wav-Sound file lossless into a mov-File in order to upload it correctly to youtube? For example, this does *not* work for youtube ffmpeg.exe -i music.wav -acodec copy upload.mov Thx

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Does atadenoise work with 10bit HDR video?
by Oliver Fromme 27 Jun '24

27 Jun '24

Hi, I'm using ffmpeg for a long time, but I've just recently started to use it with 10bit HDR (HDR10) video. So far I found out how to re-encode HDR10 video with libx265 and retain the HDR metadata. It's a bit complicated, but it seems to work fine. However, I'm unsure about video filters. In particular, I often use the atadenoise filter. It works really well for 8bit SDR video. But can it be used with HDR10 video, too? Can I simply add ''-vf atadenoise`` to the command and it'll work, or will it clip the data down to 8bit? Is there anything else that I need to take into account? Best regards, Oliver

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I found the bugs
by Mark Filipak 26 Jun '24

26 Jun '24

This is a spliced video. The Good: VLC and PowerDVD play it flawlessly. The splice is technically perfect. An MPEG-2 TS packet analyser says so. I trust what it says because what it says matches my cuts and it matches what '-f framecrc' says. The commands that made the segments and the splice are at the bottom of this message but you probably don't need to look at them. I include them for completeness. When the cuts were made, FFmpeg had no complaints whatsoever. When the concatenation was made, FFmpeg had no complaints whatsoever. The Bad: Below is proof that some common code has bugs that's affecting showinfo and show_frames. MPV must also use the bad code that showinfo uses because MPV screws up at the same place. I expect that '-ss' & '-to' also use the bad code, and that the checker that is responsible for the commonly seen discontinuous DTS error messages also uses the bad code. The show_frames and showinfo PTSes are wrong, all of them are wrong. And show_frames and showinfo are dropping 44 frames as shown below. MPV shows by a dip in its estimated FPS that it's also dropping frames even though its decoder is not dropping frames. '-f framecrc' apparently does not use the bad code. Request: I need someone (Paul? Gyan?) to look at the video and at my work in order to confirm what I've found. I've attached a copy of this message in case your email client buggers line lengths and makes a mess of it. MPEG-2_TS_packet_analyser_says framecrc_says ______show_frames_says_______ showinfo_says_[note] TS_packet ___DTS___ ___PTS___ _DTS__ _PTS__ __N___ ___DTS___ ___PTS___ __N___ ___PTS____ 75957480 504148657 504156165 same same I 133542 504148657 504137396 I 133542 504137396 75958088 504152411 same same B 133543 504152411 504141150 B 133543 504141150 75958829 504156165 504167426 same same B 133544 504156165 504144903 B 133544 504144903 75959524 504159918 same same P 133545 504159918 504148657 P 133545 504148657 75960201 504163672 same same B 133546 504163672 504152411 B 133546 504152411 75961071 504167426 504174933 same same P 133547 504167426 504156165 P 133547 504156165 75961601 504171180 same same B 133548 504171180 504159918 B 133548 504159918 75962207 504174933 504186195 same same B 133549 504174933 504163672 B 133549 504163672 75962686 504178687 same same P 133550 504178687 504167426 P 133550 504167426 75963061 504182441 same same B 133551 504182441 504171180 B 133551 504171180 75963489 504186195 504197456 same same P 133552 504186195 504174933 P 133552 504174933 75963537 504189948 same same B 133553 504189948 504178687 B 133553 504178687 75963974 504193702 same same B 133554 504193702 504182441 B 133554 504182441 75964428 504197456 504204963 same same P 133555 504197456 504186195 P 133555 504186195 75964466 504201210 same same B 133556 504201210 504189948 B 133556 504189948 75964504 504204963 504216225 same same B 133557 504204963 504193702 B 133557 504193702 75964540 504208717 same same P 133558 504208717 504197456 P 133558 504197456 75964578 504212471 same same B 133559 504212471 504201210 B 133559 504201210 75964608 504216225 504223732 same same P 133560 504216225 504204963 P 133560 504204963 75968122 504219978 same same B 133561 504219978 504208717 B 133561 504208717 ======================================= splice is here ======================================== 75971638 504223731 504227485 same same 75972614 504227485 504234993 same same 75973360 504231239 same same 75973927 504234993 504246254 same same 75974464 504238746 same same 75975245 504242500 same same 75976029 504246254 504257515 same same 75976791 504250008 same same 75977574 504253761 same same 75978134 504257515 504265023 same same 75978886 504261269 same same 75979456 504265023 504276284 same same 75979999 504268776 same same 75980791 504272530 same same 75981589 504276284 504287545 same same 75982373 504280038 same same 75983175 504283791 same same 75983764 504287545 504295053 same same 75984557 504291299 same same 75985154 504295053 504306314 same same 75985935 504298806 same same 75986543 504302560 same same 75987370 504306314 504317575 same same 75990770 504310068 same same 75991073 504313821 same same 75991289 504317575 504325083 same same 75991646 504321329 same same 75991899 504325083 504332590 same same 75992305 504328836 same same 75992602 504332590 504340098 same same 75993103 504336344 same same 75993466 504340098 504347605 same same 75994062 504343851 same same 75994518 504347605 504355113 same same 75995169 504351359 same same 75995706 504355113 504362620 same same 75996401 504358866 same same 75996985 504362620 504370128 same same 75997736 504366374 same same 75998352 504370128 504377635 same same 75999178 504373881 same same 75999828 504377635 504385143 same same 76000803 504381389 same same 76001612 504385143 504396404 same same B 133562 504385143 504212471 B 133562 504212471 76002590 504388896 same same 76003513 504392650 same same B 133563 504392650 504392650 B 133563 504392650 76004477 504396404 504407665 same same P 133564 504396404 504216225 P 133564 504396404 76005257 504400158 same same P 133565 504400158 504396404 P 133565 504400158 76005921 504403911 same same B 133566 504403911 504219978 B 133566 504403911 76006590 504407665 504418926 same same B 133567 504407665 504400158 B 133567 504407665 76007287 504411419 same same I 133568 504411419 504223732 I 133568 504411419 76007972 504415173 same same B 133569 504415173 504403911 B 133569 504415173 76008665 504418926 504426434 same same I 133570 504418926 504407665 I 133570 504418926 Comment regarding what showinfo says: framecrc is in DTS-order and doesn't show frame numbers. showinfo is in PTS-order and doesn't show DTSes. Those deficiencies greatly complicate this sort of work and makes correlations impossible when showinfo's PTSes are wrong. The 'N' frame numbers are actual. The PTSes are actual. The correlations (i.e., the frame ordering) of the starred Ns & PTSes are best guesses. ===== here is '00305+00306.cmd' ===== set SEGMENT1=00305 cut preserving ending open GOP set SEGMENT2=00306 cut call "%SEGMENT1%.cmd" call "%SEGMENT2%.cmd" ffmpeg -copyts -i "concat:g:\%SEGMENT1%.m2ts|g:\%SEGMENT2%.m2ts" -map 0 -c copy -muxdelay 0 "g:\00305+00306.m2ts" pause ===== here is '00305 cut preserving ending open GOP.cmd' ===== : This cuts 00305.m2ts and makes : '00305 cut preserving ending open GOP.m2ts'. : : The beginning is at 0:20.062, which is the "Svensk Filmindustri" logo. : 0:20.062 is N = seconds*ticks-per-second/ticks-per-frame : = 20.062*90000/3753.75 = 481. : check '00305 showinfo.txt' to confirm that N = 481 is an I-frame. : It is, and it has PTS = 481*90090/24+1048560 = 2854113.75 = 2854113. : : FFmpeg's '-f framecrc' reports: : ________00305.m2ts________ 00305 cut preserving ending open GOP.m2ts : DTS PTS : 0, 2835345, 2846606, [P] : 0, 2839098, 2839098, [B] : 0, 2842852, 2842852, [B] : 0, 2846606, 2854113, 0, 2850360, 2854113, [I] <<---+ : 0, 2850360, 2850360, [B] ¦ : ¦ : Here's a PTS- DTS-ordered diagram of the report [note]: ¦ : open GOP ———————————————————————————>: ¦ : 2839098 2842852 2846606 : 2854113 ¦ : / / / : / ¦ : PTS P B B P B I.. ¦ : _______¦________¦_______/ _______¦_______/ ¦ : / ¦ ¦ / ¦ ¦ : DTS P B B I B P.. ¦ : \ \ \ ¦ : 2835345 2846606 2850360 ¦ : ¦ : I.. ¦ : _______________/ ¦ : / ¦ : I P.. ¦ : ¦ : I.. <<---------+ : ______/ ¦ : / ¦ : I —————> I P.. <<---------+ : \ : 2850360 : : [note] The group of pictures (GOP) is shown as though it has PTS & DTS : streams, but that's just to make time and physical frame order easier : to visualize. It is actually one stream of course, and PTSes and DTSes : are actually just numbers. set CUT1=lt(pts\,2854113) set FIX1=if(eq(DTS\,2846606)\,2850360\,DTS) : The ending cut is at 1:33:10.835, which is a few black frames after : fadeout & just before the credits. : 1:33:10.835 is N = (3600+33*60+10.835)*90000/3753.75 = 134046. : Check '-vf showinfo' to confirm that N = 134046 is an I-frame. It is, : and it has PTS = 134046*90090/24+1048560 = 504223732.5 = 504223732. : : FFmpeg's '-f framecrc' reports: : ________00305.m2ts________ 00305 cut preserving ending open GOP.m2ts : DTS PTS DTS PTS : 0, 504204963, 504216225, 0, 504204963, 504216225, [P] : 0, 504208717, 504208717, 0, 504208717, 504208717, [B] : 0, 504212471, 504212471, 0, 504212471, 504212471, [B] : 0, 504216225, 504223732, 0, 504216225, 504223732, [I] : 0, 504219978, 504219978, 0, 504219978, 504219978, [B] : : Here's a PTS- DTS-ordered diagram of the report: : open GOP ————————————————————————————————>: : 504208717 504212471 504216225 : 504223732 : / / / : / : ..P B B P B I : ________¦_________¦_________/ ________¦________/ : / ¦ ¦ / ¦ : ..P B B I B : \ \ \ : 504204963 504216225 504219978 set CUT2=gte(dts\,504223732) : Because there's only one open B, discarding it would change the open : GOP to a closed GOP. But FFmpeg provides no way to set 'closed_gop' : to '1'. So, this procedure must add one frame to what would otherwise : be perfect length. ffmpeg -copyts -i "g:\00305.m2ts" -map 0 -bsf noise=drop='%CUT1%+%CUT2%',setts=dts='%FIX1%':pts=PTS -c copy -sn -dn -muxdelay 0 "g:\00305 cut preserving ending open GOP.m2ts" pause ===== here is '00306 cut.cmd' ===== : This cuts 00306.m2ts and makes '00306 cut.m2ts'. : : '00305 cut preserving ending open GOP.m2ts' ends on PTS = 504223732. : '00306.m2ts' begins on PTS = 2317327. : '00306 cut.m2ts' needs to begin on PTS = 504227485. set ADD=501910158 : The beginning is at 0:14.097 following the "Svensk Filmindustri" logo. : 0:14.097 is N = seconds*ticks-per-second/ticks-per-frame : = 14.097*90000/3753.75 = 338. : check '-vf showinfo' to confirm that N = 338 is an I-frame. It is, : and it has PTS = 338*90090/24+1048560 = 2317327.5 = 2317327. : : FFmpeg's '-f framecrc' reports: : ________00306.m2ts________ ______00306 cut.m2ts______ : DTS PTS : 0, 2294805, 2306066, [P] : 0, 2298558, 2298558, [B] : 0, 2302312, 2302312, [B] : 0, 2306066, 2317327, 0, 504223731, 504227485, [I] <<---+ : 0, 2309820, 2309820, [B] ¦ : 0, 2313573, 2313573, [B] ¦ : ¦ : Here's a PTS- DTS-ordered diagram of 00306.m2ts [note]: ¦ : open GOP ———————————————————————————————>: ¦ : 2298558 2302312 2306066 : 2317327 ¦ : / / / : / ¦ : PTS B B P B B I.. ¦ : ______¦_______¦______/ ______¦_______¦______/ ¦ : / ¦ ¦ / ¦ ¦ ¦ : DTS P B B I B B P.. ¦ : \ \ \ \ ¦ : 2294805 2306066 2309820 2313573 ¦ : ¦ : I.. ¦ : _____________________/ ¦ : / ¦ : I P.. ¦ : ¦ : I.. <<--------+ : _____/ ¦ : / ¦ : I —————————————>I P.. <<--------+ : \ \ : 2306066 2313573 set CUT1=lt(pts\,2317327) set FIX1=if(eq(DTS\,2306066)\,2313573+%ADD%\,DTS+%ADD%) : [note] The group of pictures (GOP) is shown as though it has PTS & DTS : streams, but that's just to make time and physical frame order easier : to visualize. It is actually one stream of course, and PTSes and DTSes : are actually just numbers. : : The ending is at 1:15:17.471, which is a few black frames after : fadeout & before the credits. : 1:15:17.471 is N = (3600+15*60+17.471)*90000/3753.75 = 108311. : Check '00306 showinfo.txt' to confirm that N = 108311 is an I-frame. : It is, and it has PTS = 108311*90090/24+1048560 = 407620976.25 = 407620976. : : FFmpeg's '-f framecrc' reports: : ________00306.m2ts________ ______00306 cut.m2ts______ : DTS PTS DTS PTS : 0, 407602207, 407602207, 0, 909512365, 909512365, [B] : 0, 407605961, 407605961, 0, 909516119, 909516119, [B] : 0, 407609715, 407620976, 0, 909519873, 909531134, [I] <<---+ : 0, 407613468, 407613468, 0, 909523626, 909523626, [B] ¦ : 0, 407617222, 407617222, 0, 909527380, 909527380, [B] ¦ : ¦ : Here's a PTS- DTS-ordered diagram of 00306.m2ts: ¦ : open GOP —————————————————————————————————————————>: ¦ : 407602207 407605961 407609715 : 407620976 ¦ : / / / : / ¦ : ..B B P B B I ¦ : _¦_________¦________/ ________¦_________¦________/ ¦ : ¦ ¦ / ¦ ¦ ¦ : ..B B I B B ¦ : \ \ \ ¦ : 407609715 407613468 407617222 ¦ : ¦ : 407617222 407620976 ¦ : / / ¦ : ..B B P B I<————————I <<--------+ : _¦_________¦________/ ________¦________/ ¦ : ¦ ¦ / ¦ ¦ : ..B B I B <<--------+ set CUT2=gte(dts\,407617222) set FIX2=if(eq(PTS\,407620976)\,407617222+%ADD%\,PTS+%ADD%) ffmpeg -copyts -i "g:\00306.m2ts" -map 0 -bsf noise=drop='%CUT1%+%CUT2%',setts=dts='%FIX1%':pts='%FIX2%' -c copy -sn -dn -muxdelay 0 "g:\00306 cut.m2ts" pause

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Re: [FFmpeg-user] I found the bugs
by MacFH - C E Macfarlane - News 25 Jun '24

25 Jun '24

On 26/06/2024 00:10, MacFH - C E Macfarlane - News wrote: > On 25/06/2024 20:17, Paul B Mahol wrote: >> On Tue, Jun 25, 2024 at 7:55 PM MacFH - C E Macfarlane - News < >> news(a)macfh.co.uk> wrote: >> >>> On 25/06/2024 18:28, Paul B Mahol wrote: >>>> >>>> On Tue, Jun 25, 2024 at 6:57 PM Mark Filipak >>>> <markfilipak.imdb(a)gmail.com >>>> >>>>> >>>>> VirusTotal reports that Google, Sophos, and Ikarus all say that the >>>>> MSI >>>>> contains a virus trojan. The >>>>> other virus scanners _may_ be reporting on the payload, _not_ the MSI. >>>> >>>> Its not virus, its just their silly broken heuristic detection >>> malfunction. >>>> >>>> Feel free to try installer in isolated virtual environment, maybe it >>>> even >>>> does not need internet access to install files. >>> >>> It's not Mark or anyone else here's job to investigate possibly false >>> possibly genuine virus reports just because you've been irresponsible >>> enough to recommend a product that gives rise to them. If you're so >>> keen that the sample should be put through that particular analyser, do >>> it yourself and report back here with a full log of what it reports. >> >> Not my "bug", not my interest, not my project, not my organization, >> you or >> Mark are not my friends. > > Clearly, otherwise you'd be trying to be helpful rather than > obstructive. But then one wonders why you waste your own and others' > time by bothering to post at all. > >> If you do not value my inputs, its your ultimate fail and downfall. > > I do not value your inputs because, so far at least, they've been > valueless.

1 0

visualize an audio waveform
by Michael Koch 25 Jun '24

25 Jun '24

Are there any alternatives for visualizing an audio waveform, like on an oscilloscope? The "showwaves" filter seems to be broken at the moment (ticket 11070). "showwavespic" has a different output where you can't see the sign of the signal, that's not what I want. Michael

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