[FFmpeg-user] Find all IDR frames of a video with respective timestamps
Hello, nothing I have found. Neither via ffprobe, nor via ffmpeg, I have found a solution. Gloster ___ 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] Find all IDR frames of a video with respective timestamps
On 28/06/2024 14.42, Richard Bartczak via ffmpeg-user wrote: Hello, nothing I have found. Neither via ffprobe, nor via ffmpeg, I have found a solution. A solution to what, Gloster? What are you trying to solve? I'll give my latest take on IDR frames: They don't exist, per se. What I think an IDR frame is, is an ordinary I-frame, open or closed GOP, that follows a closed GOP. closed GOP _ _ An IDR frame DTS order ..B B P I P B B P.. ^ open GOP _ _ Not an IDR frame DTS order ..B B I P B B P.. ^^^ The difference is here Now, in MPEG-2 TSes, there may be an MPEG tag that forces the previous GOP to _become_ a closed GOP, but I doubt it because that would require all decoders to buffer all B-frames up to the next P- or I-frame and to then throw them away if the next I-frame said "IDR"! That defeats the purpose of open GOP, and, besides that, what's on the screen in the meantime? Nothing? A picture repeat? No, no, no. Yesterday I read that mastering authors are recommending that open GOP be avoided so that all I-frames are automatically IDR frames. It looks to me that MPEG has produced another dog's breakfast. ___ 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] key frame
On 27/06/2024 19.27, Phil Rhodes via ffmpeg-user wrote: Mark, For the purpose of being able to look at frame sequences easily, you can probably just use something like Resolve. Thank you, Phil. I tried it on your suggestion. In 48 years of personal computing, that is most aggressive application I've ever run. I will start and end on this: It created 14 open firewall _input_ ports with 14 listeners under 4 different service names. As is always the case when I install new software, I disconnected the network before I began and checked the firewall after the install and before reconnecting the network. I have to consider Blackmagic DaVinci Resolve to be a virus hub that is probably selling access to my system through those ports to outside clients. If you are running it, I recommend you repair your computer. I will help you if you ask. --Mark. ___ 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] key frame
Mark an american, stupi.., like possible. Where a medicine, no. Gloster ___ 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] key frame
If you have unlimited funds the I recommend you get Elecard StreamEye for inspecting your ts and elementary streams. On Sat, Jun 29, 2024 at 8:27 AM Richard Bartczak via ffmpeg-user < ffmpeg-user@ffmpeg.org> wrote: > Mark an american, stupi.., like possible. > > Where a medicine, no. > > Gloster > > ___ > 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". > ___ 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] key frame
On 28/06/2024 22.57, Richard Bartczak via ffmpeg-user wrote: Mark an american, stupi.., like possible. Where a medicine, no. Gloster Oh, dear... Hey, Gloster, do you have the European sickness? I'm 3rd generation Polish-American. If I was in Poland, I'd be Marek Filipiak. Do you hate me? Do you want to conquer me? Do you want to be the Holy Roman Emperor/Kaiser/Czar/Caesar and grind me under your heel? Are y'all a bigot, Gloster? Hahaha... ___ 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] key frame
чт, 27 июн. 2024 г., 23:39 Mark Filipak : > 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. > It really hard to know what is real thing and what is just advertizement, but may be asking around this site/program will move you closer to your goal? https://www.jongbel.com/manual-analysis/mpeg-ts-utils/ > From here: > > https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/uc_system/design/guides/videodg/vidguide/basics.html > "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. > ___ > 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". > ___ 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".
