On 2018/3/24 8:14, Michael Niedermayer wrote:
> On Wed, Mar 14, 2018 at 04:26:54PM +0800, Jun Zhao wrote:
>> ffmpeg_filter.c | 4 +++-
>> 1 file changed, 3 insertions(+), 1 deletion(-)
>> 170327a7137d3ce26124c86525566d32c523a948
>> 0001-ffmpeg_filter-enable-stream_loop-in-HWAccel-transcod.patch
>> From 731b6cb1f3a13fa18cfe39c1ddba92050b999668 Mon Sep 17 00:00:00 2001
>> From: Jun Zhao <mypopy...@gmail.com>
>> Date: Wed, 14 Mar 2018 16:13:39 +0800
>> Subject: [PATCH] ffmpeg_filter: enable stream_loop in HWAccel transcoding.
>>
>> use the cmd: ffmpeg -y -stream_loop 1 -hwaccel vaapi -hwaccel_device
>> /dev/dri/renderD128 -hwaccel_output_format vaapi -i
>> input.mp4 -c:v h264_vaapi output.mp4 can get the error like:
>>
>> Error while decoding stream #0:1: Invalid data found when processing
>> input
>> Impossible to convert between the formats supported by the filter
>> 'Parsed_null_0' and the filter 'auto_scaler_0'
>> Error reinitializing filters!
>> Failed to inject frame into filter network: Function not implemented
>>
>> the root cause is can't insert software scale filter in the hwaccel
>> transcoding pipeline.
>>
>> Signed-off-by: Jun Zhao <mypopy...@gmail.com>
>> ---
>> fftools/ffmpeg_filter.c | 4 +++-
>> 1 file changed, 3 insertions(+), 1 deletion(-)
>>
>> diff --git a/fftools/ffmpeg_filter.c b/fftools/ffmpeg_filter.c
>> index 877fd670e6..c85dd7ae8d 100644
>> --- a/fftools/ffmpeg_filter.c
>> +++ b/fftools/ffmpeg_filter.c
>> @@ -452,6 +452,7 @@ static int configure_output_video_filter(FilterGraph
>> *fg, OutputFilter *ofilter,
>> int pad_idx = out->pad_idx;
>> int ret;
>> char name[255];
>> + const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(ofilter->format);
>>
>> snprintf(name, sizeof(name), "out_%d_%d", ost->file_index, ost->index);
>> ret = avfilter_graph_create_filter(&ofilter->filter,
>> @@ -461,7 +462,8 @@ static int configure_output_video_filter(FilterGraph
>> *fg, OutputFilter *ofilter,
>> if (ret < 0)
>> return ret;
>>
>> - if (ofilter->width || ofilter->height) {
>> + if ((ofilter->width || ofilter->height) &&
>> + (!desc || (desc && !(desc->flags & AV_PIX_FMT_FLAG_HWACCEL)))) {
> this can be simplified because after "!desc ||" desc is not NULL
>
> about the patch itself, ill leave this to the people activly working on
> hwaccel
Yes, local have simplified the logic, will submit V2, Tks.
>
> [...]
>
>
>
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