Re: [FFmpeg-user] Media Express vs FFmpeg CPU use

2021-04-29 Thread Bouke
> On 29 Apr 2021, at 08:37, Carl Zwanzig wrote: > > On 4/28/2021 11:15 PM, Bouke wrote: >>> Can you capture into something else and then transcode? >> Nah, the whole idea is to be done as fast as possible, so not to transcode… > > You _have_ to encode (not transcode), the SDI input is raw uncom

[FFmpeg-user] Can be done with FFMPEG?

2021-04-29 Thread Adrian Perello Marin
Hello I have used the FFMPEG and “manually” Works perfect, but I don’t know if can be done from a CSV get some info to process some tasks: 1 Insert a JPG frontend (allways the same) 2 Create a Blank page with a border and include text (Different size and formats, Title, Subtitle, etc.) 3 Insert

Re: [FFmpeg-user] How do I determine quantization of an mp4 file?

2021-04-29 Thread David Niklas
On Thu, 29 Apr 2021 09:21:52 +0200 Tobias Rapp wrote: > On 27.04.2021 20:38, David Niklas wrote: > > Hello, > > If I ffprobe an mp4 file I can see things like its bitrate and its > > resolution. But, I can't find what the quantization of the video is. > > > > How can I determine that? > > You can

Re: [FFmpeg-user] convert a video to some format and than bring it back exactly the same

2021-04-29 Thread Julien Dotsev
Thank you Moritz for your reply. Have a nice day too. Julian On Thu, 29 Apr 2021, 11:46 Moritz Barsnick, wrote: > Hi Julien, > > On Thu, Apr 29, 2021 at 04:17:20 +0200, Julien Dotsev wrote: > > I see there is a difference in the file size. The first avi is *1462KB* > and > > after the reconvers

Re: [FFmpeg-user] convert a video to some format and than bring it back exactly the same

2021-04-29 Thread Moritz Barsnick
Hi Julien, On Thu, Apr 29, 2021 at 04:17:20 +0200, Julien Dotsev wrote: > I see there is a difference in the file size. The first avi is *1462KB* and > after the reconversion is *1474KB*. > > My question is is there a way to take a video file from a client, convert > it to some readable by HTML

Re: [FFmpeg-user] Possible to change pitch of audio in a downloaded mp4 file?

2021-04-29 Thread Jim DeLaHunt
Bo, I don't have expertise in using FFmpeg with audio. But I do want to point out that what you say you want appears to be different in different parts of your message. Maybe some of these sentences were not quite worded correctly? On 2021-04-28 23:40, Bo Berglund wrote: What I wanted was to

Re: [FFmpeg-user] Possible to change pitch of audio in a downloaded mp4 file?

2021-04-29 Thread Nicolas George
Bo Berglund (12021-04-29): > I did NOT want to change the *speed* of neither the audio nor the video! Maybe that was not what you WANTED to do, but that is what you did. You used atempo, the name is quite clear, it changes the tempo. And if you do not trust the name, trust the documentation: "Adju

Re: [FFmpeg-user] How do I determine quantization of an mp4 file?

2021-04-29 Thread Tobias Rapp
On 27.04.2021 20:38, David Niklas wrote: Hello, If I ffprobe an mp4 file I can see things like its bitrate and its resolution. But, I can't find what the quantization of the video is. How can I determine that? You can take a look at the pixel format (pix_fmt) value of the video stream. To map