it's hard to download this video

[thrt]

it's hard to download this video
when i use format h5/h4-0/h3

youtube-dl.exe -F http://v.youku.com/v_show/id_XMTQyNjc2NjgyOA==.html
[youku] XMTQyNjc2NjgyOA: Downloading JSON metadata
[download] Downloading playlist: 【怪咖搞笑】盘点2015各国疯狂挑战大合集
[youku] playlist 【怪咖搞笑】盘点2015各国疯狂挑战大合集: Collected 4 video ids (downloading 4 of them)
[download] Downloading video 1 of 4
[info] Available formats for XMTQyNjc2NjgyOA_part1:
format code extension resolution note
h5 mp4 512x288 26.00MiB
h4-0 flv 512x288 14.39MiB
h3 mp4 672x378 26.26MiB
h4-1 flv 1104x622 29.92MiB (best)
[download] Downloading video 2 of 4
[info] Available formats for XMTQyNjc2NjgyOA_part2:
format code extension resolution note
h4-0 flv 512x288 10.35MiB
h3 mp4 672x378 21.16MiB
h4-1 flv 1104x622 30.01MiB (best)
[download] Downloading video 3 of 4
[info] Available formats for XMTQyNjc2NjgyOA_part3:
format code extension resolution note
h4 flv 1104x622 25.22MiB
[download] Downloading video 4 of 4
[info] Available formats for XMTQyNjc2NjgyOA_part4:
format code extension resolution note
h4 flv 1104x622 18.40MiB
[download] Finished downloading playlist: 【怪咖搞笑】盘点2015各国疯狂挑战大合集

youtube-dl.exe -f h4-0 http://v.youku.com/v_show/id_XMTQyNjc2NjgyOA==.html
[youku] XMTQyNjc2NjgyOA: Downloading JSON metadata
[download] Downloading playlist: 【怪咖搞笑】盘点2015各国疯狂挑战大合集
[youku] playlist 【怪咖搞笑】盘点2015各国疯狂挑战大合集: Collected 4 video ids (downloading 4 of them)
[download] Downloading video 1 of 4
[download] Destination: 【怪咖搞笑】盘点2015各国疯狂挑战大合集-XMTQyNjc2NjgyOA_part1.flv
[download] 100% of 14.39MiB in 00:28
[download] Downloading video 2 of 4
[download] Destination: 【怪咖搞笑】盘点2015各国疯狂挑战大合集-XMTQyNjc2NjgyOA_part2.flv
[download] 100% of 10.35MiB in 00:17
[download] Downloading video 3 of 4
ERROR: requested format not available

[dstftw]

-f '[format_id^=h4]'.

[thrt]

Yup , i try it [youtube-dl.exe -f h4-0 http://v.youku.com/v_show/id_XMTQyNjc2NjgyOA==.html] correctly. but i still receive an error message => ERROR: requested format not available

[dstftw]

What is not clear in the error message?