27 juillet

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 07:49
  ffmpeg fast seek not working for MP4 over HTTP - Gmanicus Newest 'ffmpeg' Questions - Stack Overflow
  I'm attempting to download snapshots from a video provided by the U.S House of Representatives: https://houseliveprod-f9h4cpb9dyb8gegg.a01.azurefd.net/east/2024-04-11T08-55-12_Download/video_3000000_1.mp4 I am using this command to do so: ffmpeg -ss 03:33:33 -i -y -vframes 1 test.png My intention is to fast-seek to the desired timestamp and take a snapshot over HTTP. However, when doing so, the performance is not great. A snapshot takes about 10s per 3hrs of video and seems to increase fairly linearly at that rate. However, when using ffmpeg on the (...)

26 juillet

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 22:08
  FFmpeg not copying all audio streams [closed] - Dotl Newest 'ffmpeg' Questions - Stack Overflow
  I'm having trouble getting ffmpeg to copy all audio streams from a .mp4 file. After hours of searching online, it appears this should copy all streams (as shown in example 4 here): ffmpeg -i in.mp4 -map 0 -c copy out.mp4 in.mp4 contains 3 streams: Video Audio track 1 Audio track 2 out.mp4 (which should be identical to in.mp4) contains only 2 streams: Video Audio track 1 FFmpeg does appear to correctly identify all 3 streams, but doesn't copy all of them over. Output from (...) -- as shown in example 4 here, this ticket

ginger’s thoughts http://blog.gingertech.net/

• 21:48
  SWAY at RFWS using Coviu - silvia ginger’s thoughts
  A SWAY session by Joanne of Royal Far West School. http://sway.org.au/ via https://coviu.com/ SWAY is an oral language and literacy program based on Aboriginal knowledge, culture and stories. It has been developed by Educators, Aboriginal Education Officers and Speech Pathologists at the Royal Far West School in Manly, NSW. Category: Array Uploaded by: Silvia Pfeiffer Hosted: youtubeThe post SWAY at RFWS using Coviu first appeared on ginger's thoughts.
• 21:48
  PARADISEC catalog for Users - silvia ginger’s thoughts
  This screencast shows how a user of the PARADISEC catalog logs in and explores the collections, items and files that the archive contains. Category: 2 Uploaded by: Silvia Pfeiffer Hosted: youtubeThe post PARADISEC catalog for Users first appeared on ginger's thoughts.
• 21:48
  PARADISEC catalog for Collectors - silvia ginger’s thoughts
  Screencast of how to use the PARADISEC catalog for managing and publishing collections. Category: 2 Uploaded by: Silvia Pfeiffer Hosted: youtubeThe post PARADISEC catalog for Collectors first appeared on ginger's thoughts.
• 21:48
  PARADISEC catalog for Administrators - silvia ginger’s thoughts
  Screencast of how a PARADISEC administrator uses the PARADISEC catalog for managing the consistency of metadata and staying on top of uploaded files. Category: 2 Uploaded by: Silvia Pfeiffer Hosted: youtubeThe post PARADISEC catalog for Administrators first appeared on ginger's thoughts.
• 21:48
  Silvia Pfeiffer Live Stream - silvia ginger’s thoughts
  Category: 2 Uploaded by: Silvia Pfeiffer Hosted: youtubeThe post Silvia Pfeiffer Live Stream first appeared on ginger's thoughts.

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:24
  Trying to capture display output for real-time analysis with OpenCV; I need help with interfacing with the OS for input - mirari Newest 'ffmpeg' Questions - Stack Overflow
  I want to apply operations from the OpenCV computer vision library, in real time, to video captured from my computer display. The idea in this particular case is to detect interesting features during gameplay in a popular game and provide the user with an enhanced experience; but I could think of several other scenarios where one would want to have live access to this data as well. At any rate, for the development phase it might be acceptable using canned video, but for the final application performance and responsiveness are obviously critical. I am trying to do this (...)
• 13:06
  FFMPEG C++/Kotlin Encode data from ByteArray (ByteBuffer) to subtitles and mux it with video - Алексей Красноноженко Newest 'ffmpeg' Questions - Stack Overflow
  I need to mux some byte data encoded to base64 String to mpeg-ts container. Can't find any solution to somehow encode this data to AVPacket. Using of "avcodec_encode_subtitle" supposes to have AVSubtitle with proper data. But how can I create/allocate AVSubtitle with my data? Upd. The only variant I managed to create (in Kotlin, as my app is KMP) is that, but it gives error "Invalid data found when processing input" when encoding val data = AVSubtitleRect() data.type(SUBTITLE_ASS) data.ass(BytePointer(buffer)) val subtitle = AVSubtitle() val pointerPointer = (...)
• 12:51
  How do I include FFMpeg for development in a windows program? - Lama Mao Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to follow a tutorial about using the FFMpeg libraries to extract frames from videos in C++ (by Bartholomew). In order to include the libraries, according to the tutorial, it is advised to use pkg-config to find the libraries and put them together so that CMake can include them. In the video he uses homebrew to install ffmpeg and somehow pkg-config is able to find the header files for ffmpeg (libavcodec, libavformat, libavdevice ...) The problem is I don't know how to get the ffmpeg libraries installed so that pkg-config can find them. On (...) -- by Bartholomew
• 12:01
  Seeking by bytes in FFmpeg - Yury Newest 'ffmpeg' Questions - Stack Overflow
  I'am developing a video converter which based on FFmpeg's libavformat, and I need to implement an accurate seeking API. First of all, I developed an indexer of video stream which just saves a presentation timestamps(PTS) of every packet. And then my encoder uses this index to seek the video file. Before this operations, I remux file to mp4 container, for example. Remux is needed for videos which have no correct index inside, or video has no index at all. I need to implement seeking by bytes, of course with previously built index. I tried many ways to implement this, but without (...)
• 10:23
  obtain RTSP Describe info and screenshot - Charlie Bronson Newest 'ffmpeg' Questions - Stack Overflow
  good morning, given an rtsp streaming that responds 200 to a request and has both PLAY and DESCRIBE options, how can I capture a screenshot in jpg without running into errors like 400 Bed Request, using a command line tool like ffmpeg? there are other answers on the site but without knowing the nature of streaming how can this operation be best carried out? I found very little documentation online I tried with ffprobe and ffmpeg, in tcp and udp, but each camera has its own options and before using ffmpeg I should understand what the streaming settings (...)