Hello, tl;dr: Q: is there a way to cut a 10 second clip from a h264 video (downloaded from youtube) to later use it in web browsers with no quality loss?
What I have tried so far: http://alpha.rawg.io/question/ Long version: My inputs are http://alpha.rawg.io/question/cook.txt <http://alpha.rawg.io/question/cook.txt> My first attempt is to opt-in for copy codecs using the following command: /usr/bin/env ffmpeg -y -ss 0:03:18 -t 0:00:10 -i cook.mp4 -c copy cook-start.mp4 &> cook-start.txt What I've got is: - Safari: audio/video sync is OK, beginning is OK, but additional 3 seconds of audio without video in the end - Chrome: audio/video is out of sync Then I tried to specify -ss as an output option: /usr/bin/env ffmpeg -y -i cook.mp4 -ss 0:03:18 -t 0:00:10 -c copy cook-end.mp4 &> cook-end.txt Safari & Chrome: first 3 seconds have no video, but audio only. Is there a clever trick to overcome this apparent keyframe location issue while not re-encoding videos? If there is no way to avoid re-encoding, what options should I use to minimise quality loss? Here is the webpage to check out my results & source files: https://alpha.rawg.io/question/ <https://alpha.rawg.io/question/> Thank you very much in advance. Samat. _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
