mp4

来源： https://stackoverflow.com/questions/64433422/how-to-play-and-seek-fragmented-mp4-audio-using-mse-sourcebuffer

来源： https://stackoverflow.com/questions/50692120/how-to-correctly-estimate-mp4-h-264-video-size

来源： https://stackoverflow.com/questions/50692120/how-to-correctly-estimate-mp4-h-264-video-size

问题 I am investigating a possibility to store video streams which are coming from few sources already coded in h264 without video transcoding as the device I would like to use for this project won't be capable of transcoding combined video on the fly. What I am looking for is two or more pictures side to side (not video concatenation) packed into mp4/avi/mkv. I believe mkv container supports such kind of packaging but I've not been able to find appropriate options for ffmpeg or other tool to

问题 I am investigating a possibility to store video streams which are coming from few sources already coded in h264 without video transcoding as the device I would like to use for this project won't be capable of transcoding combined video on the fly. What I am looking for is two or more pictures side to side (not video concatenation) packed into mp4/avi/mkv. I believe mkv container supports such kind of packaging but I've not been able to find appropriate options for ffmpeg or other tool to

问题 We have an encoding process in place using ffmpeg on Mac OS X. This process will take a source video and a couple files from that: .m3u8 video, .mp4 video and .mp3 audio file. By default we've used the video from our m3u8 process which is a h264 (via libx264 ) video with AAC (via libfaac ) audio. We are mostly using these videos on mobile devices (hence the m3u8 files) but we also use the .mp4 files for Android, Windows Phone, etc. More and more we also need to offer these same videos on the

问题 We have an encoding process in place using ffmpeg on Mac OS X. This process will take a source video and a couple files from that: .m3u8 video, .mp4 video and .mp3 audio file. By default we've used the video from our m3u8 process which is a h264 (via libx264 ) video with AAC (via libfaac ) audio. We are mostly using these videos on mobile devices (hence the m3u8 files) but we also use the .mp4 files for Android, Windows Phone, etc. More and more we also need to offer these same videos on the

问题 We have an encoding process in place using ffmpeg on Mac OS X. This process will take a source video and a couple files from that: .m3u8 video, .mp4 video and .mp3 audio file. By default we've used the video from our m3u8 process which is a h264 (via libx264 ) video with AAC (via libfaac ) audio. We are mostly using these videos on mobile devices (hence the m3u8 files) but we also use the .mp4 files for Android, Windows Phone, etc. More and more we also need to offer these same videos on the

问题 I'm developing with puppeteer in node on windows 10. The problem is that when I open a site playing an mp4 file the browser says me that it is not supported. I found this package: chromium-codecs-ffmpeg-nonfree; but it is for linux! How can I play .mp4 in Chromium with puppeteer on windows? 回答1: The Puppeteer Documentation has an answer for this: Q: What features does Puppeteer not support? You may find that Puppeteer does not behave as expected when controlling pages that incorporate audio

问题 I need to add an image for one second at the end of a .mp4 video file using FFMPEG. My video size is WxH and my image size is MxM, so video and image sizes are different. I have tried different options in order to add the image at the end of the video as: ffmpeg -i "concat: videoIn.mp4|image.jpg" -c copy videoOut.mp4 or ffmpeg -i videoIn.mp4 -loop 1 -t 1 -i image.jpg -f lavfi -t 2 -i anullsrc -filter_complex "[0:v][0:a][1:v][2:a] concat = n=2:v=1:a=1[v][a] -c:v libx264 -c:a aac -strict -2