[Ffmpeg-devel] [PATCH] Video generator format
Ramiro Ribeiro Polla
ramiro
Thu Apr 26 19:48:51 CEST 2007
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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