Hi, I have a Samsung security system which saves video in the .sec format which no other app can play. The Samsung SmartViewer app has developed issues and is no longer updated/supported so, as a result, I cannot play saved .sec files with it, either. So- I can save video but there is no way to watch it. However, I can convert these .sec files to mp4 with ffmpeg, using this command:
ffmpeg -i (name of file).sec (name of final file).mp4 It throws errors such as: [h264 @ 000000000057fb00] Invalid NAL unit 8, skipping. [libx264 @ 0000000000516800] frame= 176 QP=25.50 NAL=2 Slice:B Poc:352 I:3 P:485 SKIP:821 size=1220 bytes but it still works well enough that I can watch the video with any app that plays mp4. However, the video is sped up quite a bit so that it appears to be in fast motion. I suppose it's the Samsung app that is doing this but since I can't watch it until I convert it, I don't know for sure. I figured out that it is about 3.3 times faster. I can convert the video and also slow it down to normal speed with the command: ffmpeg -i (name of file).sec -filter:v "setpts=3.3*PTS" (name of final file).mp4 but the video loses quality and horizontal lines appear in it. Is there a better command for converting .sec to .mp4 while correcting the speed and preserving the quality? I don't have the skills to understand the ffmpeg documentation and how to choose the best command for my purposes, it's way over my head, but I can copy commands someone gives me and use them. I realize there won't be a perfect way to do this but I'd like to get the best results possible. I am using ffmpeg-20180824-4d87cd2-win64-static with Windows 7. I hope I am posting this correctly and if not please let me know. Thank you, LH -- Sent from: http://www.ffmpeg-archive.org/ _______________________________________________ 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".
