ffmpeg speed pts
Simply multiply by the reciprocal of the speed factor. ffmpeg -i input.mkv -filter:v setpts=PTS/60 output.mkv. This does not affect the audio speed. ,2019年4月8日 — You can use complex filters ffmpeg -i input.mkv -filter_complex [0:v]setpts=0.5*PTS[v];[0:a]atempo=2.0[a] -map [v] -map [a] output.mkv. ,Use atempo + atempo: ffmpeg -y -i video.mp4 -vf setpts=PTS/0.3 -r 50 -c:v mpeg4 -b:v 1500k -af atempo=0.6,atempo=0.5 output.mp4. ,2021年2月11日 — Speeding up/slowing down video. The speed of a video stream can be changed by changing the presentation timestamp (PTS) of each video frame. ,2017年1月10日 — Slower Video Speed. ffmpeg -i input.mp4 -filter:v setpts=2*PTS output.mp4. The lower the PTS value, the faster the time-lapse video is ... ,2020年7月6日 — The filter PTS drops frames to achieve speed change and this change only applies to video not the audio. To change the speed of audio atempo is ... ,Example : I want to speed up the first 4 seconds of my video. ... ffmpeg -i slow.mp4 -filter:v setpts=0.5*PTS part-1.mp4 ... ,在前面提到了PTS/DTS/Timestamp的关系，播放器在渲染视频时就是根据PTS来确定渲染和展示时间点的。 根据这个原理，我们就可以通过调整帧的PTS时间来实现视频加速/降速 ... ,If your file contains standard PTS reference information, I think the best way to change back playback speed will be using the setpts filter ...
| 相關軟體 FFmpeg 資訊 | |
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 ffmpeg speed pts 相關參考資料
How do I speed up a video by 60X in ffmpeg? - Super User
Simply multiply by the reciprocal of the speed factor. ffmpeg -i input.mkv -filter:v setpts=PTS/60 output.mkv. This does not affect the audio speed. https://superuser.com How to change video speed with ffmpeg? - Stack Overflow
2019年4月8日 — You can use complex filters ffmpeg -i input.mkv -filter_complex [0:v]setpts=0.5*PTS[v];[0:a]atempo=2.0[a] -map [v] -map [a] output.mkv. https://stackoverflow.com How to set audio speed to 0.3 in Ffmpeg? - Stack Overflow
Use atempo + atempo: ffmpeg -y -i video.mp4 -vf setpts=PTS/0.3 -r 50 -c:v mpeg4 -b:v 1500k -af atempo=0.6,atempo=0.5 output.mp4. https://stackoverflow.com How to speed up slow down a video – FFmpeg
2021年2月11日 — Speeding up/slowing down video. The speed of a video stream can be changed by changing the presentation timestamp (PTS) of each video frame. http://trac.ffmpeg.org Modify Video Speed with ffmpeg - David Walsh Blog
2017年1月10日 — Slower Video Speed. ffmpeg -i input.mp4 -filter:v setpts=2*PTS output.mp4. The lower the PTS value, the faster the time-lapse video is ... https://davidwalsh.name Speed up and slow down video with FFmpeg - corbpie
2020年7月6日 — The filter PTS drops frames to achieve speed change and this change only applies to video not the audio. To change the speed of audio atempo is ... https://write.corbpie.com Speed up part of video using ffmpeg - Stack Overflow
Example : I want to speed up the first 4 seconds of my video. ... ffmpeg -i slow.mp4 -filter:v setpts=0.5*PTS part-1.mp4 ... https://stackoverflow.com Speed UpDown Part Of Video Via Setpts | ffmpeg-examples
在前面提到了PTS/DTS/Timestamp的关系，播放器在渲染视频时就是根据PTS来确定渲染和展示时间点的。 根据这个原理，我们就可以通过调整帧的PTS时间来实现视频加速/降速 ... https://andy-zhangtao.github.i What's right way to change playback speed with ffmpeg ...
If your file contains standard PTS reference information, I think the best way to change back playback speed will be using the setpts filter ... https://stackoverflow.com |