Recherche avancée

Sur d’autres sites (13139)

• Docker alpine : ffprobe not found, despite installing ffmpeg with apk in Dockerfile

  5 mars 2023, par Harun Sasmaz

  I have a Go program that executes ffmpeg and ffprobe commands, so I need to install them in my Docker container.

  


  Here is my Dockerfile :

  


  FROM golang:1.17.7-alpine

WORKDIR /src
COPY go.mod go.sum ./
RUN go mod download
COPY . .
RUN go build -o ./server cmd/service/main.go

RUN apk update
RUN apk upgrade
RUN apk add --no-cache ffmpeg

FROM alpine
COPY --from=0 /src/server /usr/bin/server
CMD ["server"]


  


  However, when I run container, it says :

  


  exec: "ffprobe": executable file not found in $PATH


  


  How can I fix it ?

  


• FFMPEG & JNI : How to decode from URL

  24 avril 2013, par Hafedh Haouala

  I'm trying to make an android application that uses the FFMPEG for decoding videos that are not supported by Android ( not on all the devices at least ) : MPEG-TS & h264 Main Profile.
  So, until now, I was able to use FFMPEG from JNI to decode some local video with the above specs, but my goal is to make the FFMPEG decode data from a streaming URL (http://127.0.0.1:1666/) on which I will send buffers from an android service (for certain reasons)

  So, basically, I have two questions :

  • how I will be able to do the decoding from a streaming URL as I couldn't find any good example ?

  • when decoding my local MPEG-TS video, I've noticed that the playback speed is quite slow, and it happen that the video freezes for a while, even the Dolphin Player (based on FFMPEG) has the same behavior, and I don't know if is there some solution for this. Any suggestion ?

  I appreciate your help.

• lavc : Deprecate AVPicture structure and related functions

  14 octobre 2015, par Vittorio Giovara

  lavc : Deprecate AVPicture structure and related functions
  This structure served as a bridge between data pointers and frames,
  
  but it suffers from several limitations :
  
   it is not refcounted and data must be copied to every time
  
   it cannot be expanded without ABI break due to being used on the stack
  
   its functions are just wrappers to imgutils which add a layer of
  
    unneeded indirection, and maintenance burden
  
   it allows hacks like embedding uncompressed data in packets
  
   its use is often confusing to our users
  AVFrame provides a much better API, and, if a full blown frame is not
  
  needed, it is just as simple and more straightfoward to use data and
  
  linesize arrays directly.
  Signed-off-by : Vittorio Giovara <vittorio.giovara@gmail.com>
  

  • [DBH] libavcodec/avcodec.h
  • [DBH] libavcodec/avpicture.c
  • [DBH] libavcodec/imgconvert.c