[Ffmpeg-devel] [PATCH] Video generator format

[Ramiro Ribeiro Polla]

Ramiro Ribeiro Polla wrote:
> Ramiro Ribeiro Polla wrote:
>> Hello,
>>
>> Attached demuxer generates sample videos (just like what 
>> output_example does) with user supplied size, rate, and pix_fmt.
>>
>> It helps a bunch for testing, specially when different pix_fmts are 
>> needed.
>>
>> Test with command line:
>> ./ffmpeg_g -s 640x480 -pix_fmt yuyv422 -r 30 -f video_gen -i xxx 
>> output.mpg
>> (filename doesn't matter)
>>
>> Currently all planar and 2 packed yuv formats are supported.
>>
> Updated videogen.c with a few modifications:
>>     if( ap->pix_fmt == -1 )
>>     {
>>         av_log( s, AV_LOG_ERROR, "pix_fmt must be supplied\n" );
>>         return -1;
>>     }
>>
>>
>>   
> used PIX_FMT_NONE instead of -1
> [...]
>> static int video_gen_read_close( AVFormatContext *s )
>> {
>>     return 0;
>> }
>>
>> AVInputFormat video_gen_demuxer = {
>>     "video_gen",
>>     "video generator",
>>     sizeof(video_gen_ctx),
>>     NULL,
>>     video_gen_read_header,
>>     video_gen_read_packet,
>>     video_gen_read_close,
>>     .flags = AVFMT_NOFILE,
>> };
>>   
>
> removed unnecessary video_gen_read_close
>

And the different planar yuvs produced inconsistent output. Fixed.
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