arte.tv format code is not unique

[Cigaes]

./youtube-dl --list-formats http://www.arte.tv/guide/fr/047910-003/top-of-the-lake-3-6
[arte.tv:+7] 047910-003: Downloading webpage
[arte.tv:+7] 047910-003: Downloading info json
[arte.tv:+7] 047910-003: Extracting information
[info] Available formats for 047910-003_PLUS7-F:
format code    extension resolution  note
220-VF-STF     flv       320x200     VF (worst)
220-VO-STF     flv       320x200     VOSTF
220-VF-STMF    flv       320x200     ST sourds/mal
400-VF-STF     mp4       640x360     VF
400-VO-STF     mp4       640x360     VOSTF
400-VF-STMF    mp4       640x360     ST sourds/mal
400-VO-STF     flv       720x406     VOSTF
400-VF-STF     flv       720x406     VF
400-VF-STF     flv       720x406     VF
400-VF-STMF    flv       720x406     ST sourds/mal
400-VF-STMF    flv       720x406     ST sourds/mal
400-VO-STF     flv       720x406     VOSTF
720-VF-STF     flv       1280x720    VF
720-VO-STF     flv       1280x720    VOSTF
720-VF-STMF    flv       1280x720    ST sourds/mal (best)

You can notice that the 400-* codes appear each three times, once for 640×360 mp4 and twice for 720×406 flv (they differ in bitrate: 800 and 1500 announced IIRC).

Suggested fix: include the bitrate in the format code:

format_id = u'%s-%s-%s' % (quality, format_info['bitrate'], format_info['versionCode'])

By the way, thanks a lot for implementing the format selection feature!

[jaimeMF]

Fixed, thanks for the report.

[Cigaes]

Thanks a lot.