The VideoLAN Forums

OK, I figured out what's actually going on. The reason for non-fixed length of chunks is the fact that on scene cuts, x264 could generate IDR frame before the next expected fixed position of the IDR frames governed by keyint and min-keyint. This resets the keyint and min-keyint counters and now inst...

Same here, with very similar syntax: :sout=#transcode{vcodec=h264,venc=x264{aud,profile=baseline,keyint=50,vbv-maxrate=700,vbv-bufsize=1000,fps=25},ab=64k,channels=2,samplerate=44100,audio-sync,deinterlace{deinterlace=linear},fps=25,width=640,height=480,acodec=mp4a,aenc=ffmpeg{strict=-2}}:duplicate{...

Hi, Is there a way/syntax to set secondary source (usually a static picture) that is used when there is an interruption on the primary source (input)? For instance if there is a problem with the primary udp source (no frames detected for a certain period) the secondary source will kick-in and provid...

OK, then what could be the problem with the non-monotonous DTS? Too many encodings in parallel? I used to keep the CPU < 80%, Now I'm at 60% and observing.
Could dts-delay=<delay in ms> possibly help me with the out of sync audio when played in WMP?

Thanks

Hi, I'm transcoding a bunch of RTP streams and outputing transport streams with udp module. Then I'm recording chunks of the output to a disc without altering the payload. Finally, I'm remuxing the chinks to .mp4 with ffmpeg. ffmpeg complains that the streams have non-monotonous DTS, i.e. "... ...

Hi Jean-Baptiste, Thanks for responding. To add to my previous post: - When only remuxing/saving with VLC, the timeline is there. If the elementary streams are touched, the timeline problem appears. It's interesting that ffprobe shows proper duration though. Regarding the fix, is it likely that it w...

Hi, I'm transcoding a DVB-T mpeg TS, to low resolution h264/AAC and muxing to mpeg-2 transport stream. Then I'm recording the output with any of vlc, ffmpeg, multicat without any processing on the content, i.e. the recording is a .ts file. Unfortunately, VLC and Windows media player don't show the t...

Well, my idea behind transcoding twice is that VLC has already used some muscle to transcode the high bitrate input to something more suitable for the highest bitrate output in my HLS setup. Now, just before muxing that, I duplicate, then mux the first branch and in the second branch I feed the seco...

Ok, given that a few people are interested in the same, can you help and give us instructions and sample syntax to achieve that? We need time coherent multiple resolution/bitrate streams.

Thank you!

Hi, I don't think that's possible at the moment, I've been interested in the similar (VLC transfering the chunks to remote location). Your best bet is to find a way and transfer the files to the server's directory and I recommend sharing the web server's directory and mounting it as a local mount po...

Thanks

Thanks for the info. I still haven't given up on this as I've seen a commercial OTT solution supposedly built around VLC using Erlang language to control all the instances and the bitrate switching is perfect. My last hope is to daisy chain the transcode modules so each subsequent transcode module i...

Hi, I'm trying to build a syntax that will provide coherent multiple bitrate streams so that switching among bitrates will be seamles. I'm afraid that if I separate the streams to sperate vlc instances or separate vlm items, the coherence is not ideal. Also, I want to optimize CPU utilization by cas...

Hi, I'm also interested in finding a way to synchronize the various quality chunks. At the moment only a single instance of VLC is software encoding two quality streams but they are not in sync. Mark, with your approach with different vlm instance per stream, how do you ever synchronize the outputs ...

Hi, Is it possible VLC to auto-transfer the .ts chunks and .m3u8 files to a remote location instead of local directory? Something in the style of: dst="ftp://user:pass@host/dir/name-##########.ts" In production environment, the streaming server is on a remote machine and using a separate s...