Better error handling for FFmpegDemuxer seeking

Better error handling for FFmpegDemuxer seeking

BUG=23447, 709302

[servolk, 2017-04-29 00:09:21]

The CQ bit was checked by servolk@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2017-04-29 00:10:01]

Dry run: CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[servolk, 2017-04-29 00:11:22]

Description was changed from

==========
Better error handling for FFmpegDemuxer seeking

BUG=709302
==========

to

==========
Better error handling for FFmpegDemuxer seeking

BUG=23447,709302
==========

[servolk, 2017-04-29 00:14:13]

On 2017/04/29 00:11:22, servolk wrote:
> Description was changed from
> 
> ==========
> Better error handling for FFmpegDemuxer seeking
> 
> BUG=709302
> ==========
> 
> to
> 
> ==========
> Better error handling for FFmpegDemuxer seeking
> 
> BUG=23447,709302
> ==========

I read comments from crbug.com/23447, and it's not clear if we ever found a
stream which consistently reproduced this. Also the most recent meaningful
comments on that bug are ~6 years old, so perhaps ffmpeg does work better now?

[commit-bot: I haz the power, 2017-04-29 00:42:02]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-04-29 00:42:03]

Dry run: Try jobs failed on following builders:
  cast_shell_linux on master.tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/cast_shell_linu...)

[DaleCurtis, 2017-05-01 22:58:42]

dalecurtis@chromium.org changed reviewers:
+ dalecurtis@chromium.org

[DaleCurtis, 2017-05-01 22:58:42]

Looks like bots are failing, so we have  test clip after all?? :)

[servolk, 2017-05-01 23:02:13]

On 2017/05/01 22:58:42, DaleCurtis wrote:
> Looks like bots are failing, so we have  test clip after all?? :)

Yes, although it looks like failures are only in AudioBearFlac test, which was
added only recently. That TODO about seeking errors not being handled properly
is way older than FLAC support. Anyway, I'll try to debug to understand why the
seeking fails in those FLAC streams.