Re: [FFmpeg-user] How to create good video from low quality jpeg

2020-07-28 Thread Carl Zwanzig
On 7/28/2020 2:17 PM, Kawada Tsuyoshi wrote: I executed same command on Ubuntu 20.04 again. I got good quality video. Note that the linux disrto version doesn't matter at all, only the ffmpeg version. And please do not "top-post" on this mailing list. z!

Re: [FFmpeg-user] How to create good video from low quality jpeg

2020-07-28 Thread Kawada Tsuyoshi
Hi there. I executed same command on Ubuntu 20.04 again. I got good quality video. Thanks, Tsuyoshi On 2020/07/28 15:22, Carl Eugen Hoyos wrote: Am Di., 28. Juli 2020 um 02:26 Uhr schrieb Kawada Tsuyoshi : this is not good. https://mekou.com/ng.jpg Please test current FFmpeg git head

[FFmpeg-user] Inquiry about VP8 and rotation tag

2020-07-28 Thread linecorp baek
Hi guys, I'm looking for how to use a rotation tag for VP8 codec. (A rotation tag means a value of a video frame rotated some direction.) As you know, generally VP8 is combined with WebM container, that container can't put a rotation tag in the format officially. (Please let me know if it's

[FFmpeg-user] is there any way to abort ffmpeg if source bitrate gets too low

2020-07-28 Thread andrei ka
hi all i have multicast sources that sometimes actually switch to just static images encoded at very low bitrates, bitrate drops from 2Mbps when it's a decent signal to 500kbps when it's static. so, I don't know how to detect it on a fly, ffmpeg keeps happily encoding. Wish we had some input

Re: [FFmpeg-user] Rescuing inconsistent frame rate screen capture file?

2020-07-28 Thread Simon Roberts
I'm topposting here because I think this is in some sense another question, but since the problem I'm trying to solve remains the same, I figure the earlier question should be here for context. Do individual frames in a libx264 stream (in an mp4 container) carry timestamps, as distinct from

[FFmpeg-user] Embedding RTSP Stream (h264) with metadata

2020-07-28 Thread HAN Hao
Hi Sir/Madam, Currently, I have a RTSP stream that will be streamed to a computer for data processing(live) before the processed data is passed down to another computer to overlay on the original video stream for display. Without any reference point, I am unable to match the processed data

Re: [FFmpeg-user] Embedding RTSP Stream (h264) with metadata

2020-07-28 Thread Bryce McLeod
Hi Han, You could try -copyts and using timestamp metadata as your reference point Regards Bryce ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email

Re: [FFmpeg-user] How to create good video from low quality jpeg

2020-07-28 Thread Carl Eugen Hoyos
Am Di., 28. Juli 2020 um 02:26 Uhr schrieb Kawada Tsuyoshi : > this is not good. > https://mekou.com/ng.jpg Please test current FFmpeg git head before asking for support here. (The file is not low quality and your issue has nothing to do with "good video from low quality jpeg") Carl Eugen