Search found 62 matches
- Wed Jan 23, 2019 10:16 pm
- Forum: Usage
- Topic: How to preserve an mp4's audio start_time when passing through an audio filter?
- Replies: 1
- Views: 446
Re: How to preserve an mp4's audio start_time when passing through an audio filter?
I'm not sure how one would preserve this automatically but you could easily insert delay with asetpts or adelay: https://www.ffmpeg.org/ffmpeg-all.html#setpts_002c-asetpts https://www.ffmpeg.org/ffmpeg-all.html#adelay I suppose you could write a command that probes the file, assigns the original sta...
- Wed Jan 23, 2019 10:11 pm
- Forum: Usage
- Topic: Can ffmpeg create a (fancy) slideshow video?
- Replies: 1
- Views: 455
Re: Can ffmpeg create a (fancy) slideshow video?
FFmpeg in conjunction with a good console could definitely do something like this.
However... at least in my case, it would take probably just as long to write the command as it would to simply use a video editor. But then again the command would be reusable in the future...
However... at least in my case, it would take probably just as long to write the command as it would to simply use a video editor. But then again the command would be reusable in the future...
- Wed Jan 23, 2019 9:57 pm
- Forum: Usage
- Topic: audio video not syncing
- Replies: 7
- Views: 1132
Re: audio video not syncing
You should be able to use -map_metadata:

All documentation can be found via this link:
https://www.ffmpeg.org/ffmpeg-all.html

All documentation can be found via this link:
https://www.ffmpeg.org/ffmpeg-all.html
- Fri Jan 18, 2019 10:16 pm
- Forum: Usage
- Topic: audio video not syncing
- Replies: 7
- Views: 1132
- Mon Jan 14, 2019 6:00 pm
- Forum: Usage
- Topic: audio video not syncing
- Replies: 7
- Views: 1132
Re: audio video not syncing
You'll probably just have to go with using adelay: ffmpeg -re -i udp://224.2.2.8:1008 -map 0:p:40 -vcodec mpeg2video -s 720x576 -r 25 -flags cgop+ilme -sc_threshold 1000000000 -b:v 2M -minrate:v 2M -maxrate:v 2M -bufsize:v 1.4M -acodec mp2 -ac 2 -b:a 192k -af "adelay=0|0"-f mpegts udp://230.0.0.5:10...
- Fri Jan 11, 2019 1:08 am
- Forum: Usage
- Topic: Lossless HDR Capture
- Replies: 5
- Views: 1203
Re: Lossless HDR Capture
I actually own both the Magewell Pro Capture HDMI 4k Plus and the Avermedia Live Gamer 4k, however I haven't attempted to record lossless with either as I don't feel there will be much benefit in quality once uploaded to a streaming service. While I haven't tested lossless capture, I know that someo...
- Thu Jan 10, 2019 9:58 pm
- Forum: Usage
- Topic: Lossless HDR Capture
- Replies: 5
- Views: 1203
Re: Lossless HDR Capture
I'm looking to hopefully change the container they store rtbufsize in, if it was stored in 64bit container you could greatly increase buffer size, I'll let you know if I figure anything out. That being said, it's possible that your GPU, CPU, or hard drive isn't keeping up. So regardless of how large...
- Wed Jan 09, 2019 9:56 pm
- Forum: Usage
- Topic: audio video not syncing
- Replies: 7
- Views: 1132
Re: audio video not syncing
Is the audio ahead or behind the video?
- Wed Jan 09, 2019 9:54 pm
- Forum: Usage
- Topic: Lossless HDR Capture
- Replies: 5
- Views: 1203
Re: Lossless HDR Capture
The amount of threads used is based on the codec, -threads doesn't really work based on everything I've read about it. -rtbufsize is limited by it's container, they're using an INT32 to store the value that caps at 2,147,483,647, been trying to get them to fix this for a while now. You show output f...
- Thu Oct 25, 2018 7:07 pm
- Forum: Usage
- Topic: Outputting interlaced video
- Replies: 2
- Views: 3997
Re: Outputting interlaced video
Give this a try:
Code: Select all
ffmpeg -i input.mxf -pix_fmt yuv420p -c:v libx264 -b:v 10M -c:a copy -flags +ilme+ildct -x264opts tff=1 output.mxf