[vlc-devel] [vlc-commits] hls: Don't download the same segment twice when prefetching.

[Hugo Beauzée-Luyssen]

On Tue, Feb 7, 2012 at 1:45 PM, Frederic YHUEL <fyhuel at viotech.net> wrote:
>>
>> Hello,
>>
>> This commit seems to have introduced a bug or revealed a libav one:
>>
>> If I don't revert it, I'm flooded with libavcodec errors:
>>
>> [0x8457908] avcodec decoder warning: cannot decode one frame (30836 bytes)
>> [h264 @ 0x845df80] allocate_progress() overflow
>> [h264 @ 0x845df80] get_buffer() failed (-1 0 0 (nil))
>> [h264 @ 0x845df80] decode_slice_header error
>>
>> But the sound is fine.
>>
>> I did the test with the following m3u8:
>> http://qthttp.apple.com.edgesuite.net/11piubpwiqubf06c/sl_vod.m3u8
>>
>> Best Regards,
>>
>> --
>> Frédéric
>
> The relevant error message was:
>
> [h264 @ 0xb1ee1120] Width/height changing with frame threads is not
> implemented. Update your Libav version to the newest one from Git. If
> the problem still occurs, it means that your file has a feature which
> has not been implemented.
>
> Sorry for the noise!
>

Well that makes sense since this patch has quite a good chance of
triggering a stream change, thus (probably) changing the resolution.
However, that's the point of adaptive streaming...
After some tests, the same problem is triggered when changing
bandwidth, though I don't remember seeing this earlier...

Regards,

-- 
Hugo Beauzée-Luyssen