Re: How to reuse pipeline to read different mp4 files. Few questions.
cfd new via gstreamer-devel <[email protected]>
| Newsgroups | gmane.comp.video.gstreamer.devel |
|---|---|
| Message-ID | <[email protected]> |
for question 1:
Steps:1. set pipeline state to null
2. disconnect decodebin ! appsink from filesrc3. set new location to filesrc4. reconnect decodebin ! appsink to filesrc5. set pipeline state to play
On Monday, August 7, 2023, 08:45:50 a.m. EDT, Антон Шаров via gstreamer-devel <[email protected]> wrote:
Hi. I have following pipeline filesrc ! decodebin ! appsinkBy some condition I need to exctract some frame (cond. for now is exact frame number):(here is code sample on C#) var fileSrc = readerPipe.GetByName("filesrc"); fileSrc["location"] = videoFile; // new file to read from var appSink = (AppSink) readerPipe.GetByName("my_appsink"); readerPipe.SetName($"file {videoFile} frame_stepper"); var q = readerPipe.SetState(State.Playing); var step = 1; while (step < frameNumber) { appSink.PullSample(); step++; } The questions:
- It seems that it doesn’t matter what video file is set, it will always read from first setuped file. How to reset pipeline to read from new file? Should I create new pipeline or can I reset given pipeline so it can read from given file?
- What is the best and fastest pipeline to read frame-by-frame from file ? Maybe the one above is not goot, maybe playbin + appsink is better?
Thanks in advance.