Recherche avancée

Sur d’autres sites (5593)

• How to dump RTSP to raw data file without encoding

  28 juin 2020, par Yves

  I've read this link : How to dump raw RTSP stream to file ?

  


  In this link, it seems that dumping RTSP stream to some formatted file, such as mp4, is normal.

  


  But I want to store the RTSP stream into the raw data files, instead of files like mp4, avi etc. And I should be able to extract data from the raw data files and send it out as RTSP stream too.

  


  In a word, this is what I need :

  


  

  1. receiving RTSP stream ---> 2. store RTSP data into raw data files ---> 3. read raw data files and send data as RTSP stream

  


  


  Why do I need this ?

  


  Because as my understanding, storing RTSP strema into some formatted file, such as mp4, needs to do an action of encoding (encode RTSP to mp4). But for me, I don't need this action, I simply need to store RTSP data and re-send it as RTSP stream. So if I can store RTSP into the raw-data file, instead of mp4, I don't need to spend computer resources on the action of encoding.

  


• bash : find truncates some paths [duplicate]

  17 novembre 2023, par fweber

  I'm using MacOS 13.0.1 and try to find + loop over .mov files to convert them to MP4 using FFMPEG. Many of my path contain spaces and special characters. I found a way of putting things together thanks to this post :

  


  function convert_to_mp4_then_rm() {
    while IFS= read -r -d '' file
    do
        ffmpeg -i "$file" "${file%.mov}.mp4"
    done < <(find /Users/f.weber/Downloads -type f -name "*.mov" -print0)
}


  


  This runs but I found a (random ?) error : it looks like some of the paths are truncated when they arrive to the ffmpeg CLI.

  


  Example to reproduce with a basic content :

  


  ll Downloads/
total 9472
-rw-r--r--  1 f.weber  staff   2,3M 26 sep 08:56 23-09-26 08-56-50-2538.mov
-rw-r--r--  1 f.weber  staff   2,3M 26 sep 08:56 23-09-26 08-56-50-2539.mov


  


  When I call convert_to_mp4_then_rm in a terminal, the first MOV file is properly processed then I have the following error from FFMPEG : /Downloads/23-09-26 08-56-50-2539.mov: No such file or directory. In some conditions (e.g. when the path is longer) the truncation is more obvious and can occur in the middle of a word.

  


  What is the explanation for this ? How to forward untruncated paths to my function's core ?

  


  Thanks !

  


• Lego Mindstorms RSO Format

  14 juillet 2010, par Multimedia Mike — General

  I recently read a magazine article about Lego Mindstorms. Naturally, the item that caught my eye was the mention of a bit of Lego software that converts various audio file formats to a custom format called RSO that can be downloaded into a Mindstorms project to make the creation output audio. To read different sources, one might be left with the impression that there is something super-duper top secret proprietary about the format. Such impressions do not hold up under casual analysis of a sample file.

  A Google search for "filetype:rso" yielded a few pre-made sample that I have mirrored into the samples archive. The format appears to be an 8-byte header followed by unsigned, 8-bit PCM. More on the wiki. If FFmpeg could gain an RSO file muxer, that would presumably be a heroic feat to the Lego hacking community.