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• How can I efficient process a video on a per-request basis ?

  18 décembre 2015, par mipadi

  I’m working on a web application in which a watermark must be applied to a video before it is sent to the user. Currently this watermark is static, and is created using ffmpeg when a video is updated. However, the application is changing so that a unique watermark will be added to the video for every request made for the video. This prevents a problem, as the video files may be fairly large and adding a watermark may be time-consuming (e.g., in some cases it may take over a minute to add a watermark), but the watermarks cannot be added on upload.

  I figured that streaming video could be a solution and implemented a solution using the nginx-rtmp-module, but several problems cropped up :

  1. RTMP solutions are a no-go as they appear to require Flash. This application must be supported on devices that don’t support Flash at all, or don’t (and won’t) have it installed.
  2. I have considered using MPEG-DASH, but that enjoys only limited support. Namely, it is not supported on versions of Firefox targeted by the application, nor is it supported on iOS or some versions of Safari.
  3. I have considered HLS, but that enjoys even more limited support than MPEG-DASH.
  4. Regardless, I haven’t actually been able to get Dash.js (the reference player for MPEG-DASH streams) to work, although that may be due to an encoding issue, I’m not sure.

  I wondered if there is a better (perhaps simpler) solution to this problem ; perhaps streaming video isn’t the way to go at all ? Is there an efficient way to transcode a video file on-the-fly and start sending it to the browser quickly ?

  I am not against using solutions like node.js or other platforms/frameworks, and solutions can use HTML5 <video></video> if necessary.

• Video not playing on all browsers (FFMPEG)

  12 février 2021, par Mithradantor

  For days I have been struggeling with ffmpeg (PHP).

  


  I have a website where users can upload video's. Obviously people use .mov, .mp4 and .mpeg created by various devices such as cameras, mobile telephones, tablets and many more devices. The problem I have is that those movies either work on Firefox or Chrome, but almost never on both. No clue why, I guess it has to do with codecs and browser support.

  


  I am using FFMpeg to turn them into webm files. This works 95% of the time. In all browsers I have a working video and the sound works too. But sometimes there is no sound at all.

  


  When I open the movie in a other browser (or Windows media player for example) I do hear sound. It is so random to in what browser or software it works or does not work.

  


  Does anyone know of a way to make sure that your movies work in every browsers i.e. Chrome, FireFox and Safari with both video and audio ? and if so, how can I transform them and into what format (codecs ?)

  


  I dont mind converting a movie into three different formats, as long as both video and audio works.

  


  I hope someone can give me some advice. I have tried many ways but none work cross-browser so far.

  


  An example of the code that I use :

  


  $video->save(new FFMpeg\Format\Video\WebM(), 'export-webm.webm');


  


  Does anyone know how I can make it work on every browser ?

  


  What I already tried is (amongst others) :

  


  using an original mp3 or mov and convert it into webm with this code :

  


  ffmpeg -i origin.mov -c:a libvorbis -strict -2 -c:v libvpx-vp9 output.webm

  


  Unfortunately in FireFox i have visual and audio but in Chrome I have nothing, just a blank screen.

  


• Need to Download Videos From (Ap.lk) This site [closed]

  20 mars 2024, par Seamon

  Getting this error when using the URL with FFmpeg

  


  [https @ 00000191353bfc00] No trailing CRLF found in HTTP header. Adding it
[ in#0 @ 00000191353aa580] Error opening input: Invalid data found when processing input

Error opening input file https://video.ap.lk/stream/ad470e41-5a62-43da-b8ab-6a0e9d0a7316 

Error opening input files: Invalid data found when processing input


  


  This is the regular URL that I use to get the video :

  


  https://video.ap.lk/stream/ad470e41-5a62-43da-b8ab-6a0e9d0a7316

  


  Using this FFmpeg command :

  


  ffmpeg -user_agent "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36 OPR/107.0.0.0" -headers "Cookie: google-analyze=2f506b9c-9387-4727-ab57-821718fedb38; Path=/" -referer "https://ap.lk" -i "https://video.ap.lk/stream/ad470e41-5a62-43da-b8ab-6a0e9d0a7316" -c copy "ad470e41-5a62-43da-b8ab-6a0e9d0a7316.mp4"


  


  What should I do ? Is there anything wrong with URL or what else ?