[FFmpeg-user] Extracting stills frames from a DVB-T MPEG transport stream with subtitles

2020-06-19 Thread Tom Crane
Dear All, I am attempting to extract still frames from a video stream in a multi-channel DVB-T MPEG transport stream, for example every 2 seconds, with selected accompanying subtitles but can't get it to work. This example command successfully extracts frames from video stream 0:26 to jpeg

Re: [FFmpeg-user] MPEG2 Profile Options Integer order wrong

2020-06-19 Thread lance . lmwang
On Fri, Jun 19, 2020 at 08:03:00PM +0200, Marton Balint wrote: > > > On Fri, 19 Jun 2020, Carl Eugen Hoyos wrote: > > > Am Mi., 17. Juni 2020 um 01:32 Uhr schrieb Bill Crockett > > : > > > > > > https://ffmpeg.org/ffmpeg-all.html#mpeg2 > > > > > > Who maintains the documentation on the above

Re: [FFmpeg-user] GOP Structure - XDCAM RDD9

2020-06-19 Thread Marton Balint
On Fri, 19 Jun 2020, Anthony Smith wrote: Hello everyone, I am having an issue creating an RDD9 compliant MXF using FFMPEG within FFASTrans. I am transcoding from a QT ProRes 422 HQ MOV to XDCAM MXF then re-wrapping using BMX Trans Wrap to ensure RDD9 compliance. The base issue is the GOP

Re: [FFmpeg-user] Concatenating audio files results in a file of the wrong length

2020-06-19 Thread Carl Eugen Hoyos
Am Fr., 19. Juni 2020 um 21:25 Uhr schrieb Stephanye Carrier : > > I have a project that requires me to demux audio from video files, cut > the audio up in parts, then concatenate the parts back together and > remux the audio and video together. This is often not possible because of how audio and

[FFmpeg-user] Concatenating audio files results in a file of the wrong length

2020-06-19 Thread Stephanye Carrier
I have a project that requires me to demux audio from video files, cut the audio up in parts, then concatenate the parts back together and remux the audio and video together. However, I am running into an issue where the resulting audio file is the wrong length which results in a desync.

Re: [FFmpeg-user] MPEG2 Profile Options Integer order wrong

2020-06-19 Thread Marton Balint
On Fri, 19 Jun 2020, Carl Eugen Hoyos wrote: Am Mi., 17. Juni 2020 um 01:32 Uhr schrieb Bill Crockett : https://ffmpeg.org/ffmpeg-all.html#mpeg2 Who maintains the documentation on the above and how can I contact to ask if it is wrong or correct? 16.15 mpeg2 MPEG-2 video encoder.

Re: [FFmpeg-user] MPEG2 Profile Options Integer order wrong

2020-06-19 Thread Carl Eugen Hoyos
Am Mi., 17. Juni 2020 um 01:32 Uhr schrieb Bill Crockett : > > https://ffmpeg.org/ffmpeg-all.html#mpeg2 > > Who maintains the documentation on the above and how can I contact to ask if > it is wrong or correct? > > 16.15 mpeg2 > > MPEG-2 video encoder. > > 16.15.1 Options > > profile integer > >

Re: [FFmpeg-user] Can I convert from .ram to .mp4?

2020-06-19 Thread David
Thanks for the courtesy of replying, Rodney! Turns out I'd not noticed that I was still in the bin directory when I invoked first invoked ffmpeg.exe.  When I copied the executable into the folder where only the 317.ram was, ffmpeg worked as it ought to. I'd not known about the user forum's

Re: [FFmpeg-user] Can I convert from .ram to .mp4?

2020-06-19 Thread Rodney Baker
On Thursday, 18 June 2020 2:56:24 ACST David wrote: > I've watched the video and invoked a simple command: > > ffmpeg -i 317.ram 317.mp4 > which the Windows PowerShell said I had to change to > .\ffmpeg -i 317.ram 317.mp4 > which I did. > > I have the ffmpeg.exe file in the same folder as the

[FFmpeg-user] How to terminate cleanly a recording on Windows

2020-06-19 Thread Verachten Bruno
Hi there, I'm trying to record lots of small wav files to give to PocketSphinx for adaptation. My command looks like this: ffmpeg.exe -f dshow -i audio="Microphone sur casque (2- Plant" -acodec pcm_s16le -ac 1 -ar 16000 1.wav I haven't tried this particular command under Linux, but usually

Re: [FFmpeg-user] MPEG2 Profile Options Integer order wrong

2020-06-19 Thread Bill Crockett
On Wed Jun 17 15:28:43 EEST 2020 Moritz Barsnick wrote: Hi Bill, On Wed, Jun 17, 2020 at 12:28:39 +1000, Bill Crockett wrote: Before you told me this, I did try the words "high" or "main", but I put in quotes either single or double and got errors. It would be extremely helpful if you