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video - DirectShow Record Problem - fps
    I just create simple graph to record video from a source Filter: SourceFilter ---> Muxer ---> FileWriter I can ... format) ---> File writer See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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video encoding - ffmpeg: RGB to YUV conversion loses color and scale
    I am trying to convert RGB frames to YUV420P format in ffmpeg/libav. Following is the code for conversion and ... ); av_free(pFrameYUV); } See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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video - ffmpeg - how does moving overlay / text command work?
    In Ffmpeg you can create moving text: ffmpeg -y -t 10 -s qcif -f rawvideo -pix_fmt rgb24 -s 1280x720 -i / ... stop at the middle of the screen? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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video - How to keep android from inverting the image from the front facing camera?
    My video Camera app does record in the landscape mode, but the front facing camera previews the regular image, but ... help a lot. Thank you. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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video - How can we play YouTube embeded code in an Android application using webview?
    How can we play YouTube embeded code in an Android application using webview? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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video - Combine MPEG-DASH segments (ex, init.mp4 + segments.m4s) back to a full source.mp4?
    GPAC, http://gpac.wp.mines-telecom.fr/, can be used to do video segmentation along with MPEG-DASH spec. One ... use GPAC or ffmpeg for this? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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video - Anyone familiar with mp4 data structure?
    Where in the mp4 file structure is the duration of it? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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video - How to embed a YouTube channel into a webpage
    Can anyone suggest how I embed a youtube channel into a webpage - I am getting conflicting information from ... player if possible? thanks See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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video streaming - Installing a TURN Server on Ubuntu for WebRTC
    How can I install a TURN server on my ubuntu 12.04? Can you share tutorial? I read this tutorial: ... -server-installation-guide.html tutorial. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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video - ffmpeg: add subtitles to mp4 with out creating a new file
    ffmpeg -i infile.mp4 -i infile.srt -c copy -c:s mov_text outfile.mp4 adds subtitles to mp4 video but it ... in a second, so should ffmpeg. See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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video - How to set content disposition on individual azure blob requests?
    I have an application that hosts videos, and we recently migrated to Azure. On our old application we gave the ... pay double the storage cost. See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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video streaming - GOP setting is not honored by Intel H264 hardware MFT
    Problem statement: Intel hardware MFT is not honoring the GOP setting, resulting in more bandwidth consumption in ... no screen content change? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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629 views
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video streaming - Flush & Latency Issue with Fragmented MP4 Creation in FFMPEG
    I'm creating a fragmented mp4 for html5 streaming, using the following command: -i rtsp://172.20.28. ... streaming dash content using mp4box See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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video - Fastest way to extract frames using ffmpeg?
    Hi I need to extract frames from videos using ffmpeg.. Is there a faster way to do it than this: ffmpeg -i file.mpg -r 1/1 $filename%03d.jpg ? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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724 views
1 answer
video - Convert mov with Alpha to VP9 Webm with Alpha Using ffmpeg
    I am trying to convert a mov with alpha transparency to webm with alpha transparency, as seen here. I followed the ... .5 is the latest version. See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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671 views
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video captured from iphone gets rotated when converted to .mp4 using ffmpeg
    When I try to upload videos captured from my iPhone in my app, the server performs a conversion from .mov to . ... to be rotated. Any idea? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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647 views
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video - How to embed VLC media player to my Android App
    Is there a way to embed VLC media player to Android Application? I have several issues: 1) I have a video ... past time, even in stackoverflow). See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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817 views
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video - Sendcmd in ffmpeg
    Why sendcmd in ffmpeg works with drawtext, but does not work with scale, rotation and other filters? Example (this code ... =40:w=400:h=400'; See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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631 views
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video streaming - Encoding H.264 from camera with Android MediaCodec
    I'm trying to get this to work on Android 4.1 (using an upgraded Asus Transformer tablet). Thanks to Alex ... API correctly? Thanks in advance. See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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732 views
1 answer
video - Creating AVI files in OpenCV
    I have been trying to create an application using OpenCV and Visual Studio 2008, to capture images from a webcam, ... 0kb file on the disk. See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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487 views
1 answer
video processing - Is there a way to use ffmpeg to determine the encoding of a file before transcoding?
    I am planning to use ffmpeg to ensure all video files uploaded to my website are encoded as mp4 h264. ... with another command line utility? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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795 views
1 answer
video - Using FFMPEG: How to do a Scene Change Detection? with timecode?
    Based on this article it seems that it is possible to use FFMPEG to detect scene change in videos: http://www. ... do this? Thank you very much! See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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