Build of CEF With media codecs doesn't render MPEG4 files

[callum]

I built CEF (2526 Win32 branch) with the media codecs turned on using this command:

Code: Select all

set GYP_MSVS_VERSION=2013
set GYP_DEFINES=proprietary_codecs=1 ffmpeg_branding=Chrome buildtype=Official
python automate-git.py --download-dir=C:\work\cef-2526.win.32.media --branch=2526


The build completes successfully but when I link my application to this build and navigate to an MP4 URL, I see a red screen with the message:

Loading error!
Message:
Code: -3

The cefclient.exe app that gets built renders the movie correctly.

I'm positive this has worked for me previously - any ideas what I may have done to break it?

[Czarek]

Chromium error code:

// An operation was aborted (due to user action).
NET_ERROR(ABORTED, -3)

[callum]

Thanks for tracking that down.

I don't trigger any user action - it's a link in a page that resolved to an MPEG4 movie trailer.

Will keep digging.

[Czarek]

Check LoadHandler/RequestHandler/DownloadHandler in cefclient and see if there are any differencies in your app.

[callum]

Hi Czarek - sorry for the delayed reply - took my tired old machine a while to rebuild everything.

I checked all those overrides you mentioned and whilst I some things there (notify the main app in variouis places for example), if I remove them, the problem persists.

I don't see anything in cefsimple (works there too as well as cefclient) that I'm not doing.

Will continue to poke - thank you!

[Czarek]

I don't see anything in cefsimple (works there too as well as cefclient) that I'm not doing.

So if the issue doesn't seem to be in code then make sure your binaries are correct - old files overwritten and new copied, check if any new appeared.

[callum]

Yep - I have scripts that make sure the binaries are all correct.

Only other thing I can think of is that I added "buildtype=Official" in the GYP_DEFINES to pick up what I read were some optimizations.

I *think* I omitted that several weeks when this worked - will kick off another build tonight and see if that makes a difference.

[Czarek]

Check binaries manually. Copy cefclient/cefsimple executables to your app's directory and run from there.

[Czarek]

I can't find any occurence of the "Loading error!" string neither in Chromium nor in CEF. Is this your code displaying that message? Looks like you have implemented CefLoadHandler::OnLoadError wrongly. See in cefclient that you should ignore the ERR_ABORTED code (-3):

Code: Select all

void ClientHandler::OnLoadError(CefRefPtr<CefBrowser> browser,
                                CefRefPtr<CefFrame> frame,
                                ErrorCode errorCode,
                                const CefString& errorText,
                                const CefString& failedUrl) {
  CEF_REQUIRE_UI_THREAD();

  // Don't display an error for downloaded files.
  if (errorCode == ERR_ABORTED)
    return;
   
  ...


[callum]

You're right! That was it which also means that I could never have seen this working.

Behaves as expected now - thank you so much for finding that - much appreciated.