[FFmpeg-devel] flv decoder question
Sun Jul 26 19:11:20 CEST 2009
On Sat, Jul 25, 2009 at 06:43:02PM -0700, Baptiste Coudurier wrote:
> On 07/25/2009 05:41 PM, Justin Ruggles wrote:
>> Can someone who knows about the FLV decoder explain these lines in
>> if((flags& (FLV_HEADER_FLAG_HASVIDEO|FLV_HEADER_FLAG_HASAUDIO))
>> != (FLV_HEADER_FLAG_HASVIDEO|FLV_HEADER_FLAG_HASAUDIO))
>> s->ctx_flags |= AVFMTCTX_NOHEADER;
>> I ask because it is causing av_find_stream_info() to read way more data
>> than necessary for audio-only FLV files containing Speex.
> The idea is to read packets to create streams if flags is wrongly set,
> but the check will cause NOHEADER to be always be set audio only or
> video only files.
I think this is intentional, since IIRC there are files with audio and video
where the header still indicates only one of them.
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