h264parse currently has a bug where it will send an avc caps without codec_data when it has received an SPS but not PPS. This bug currently causes avdec_h264 to fail when a drain request is made during caps neg. As a workaround, a capsfilter was added to force a stream-format of byte-stream for all h.264 decoders. However, this introduced a new issue with the vtdec element, as it only supports the avc stream-format. Therefore, this patch looks to address both problems by only introducing the capsfilter when the avdec_h264 element is used. It also removes the stream-format and alignment requirements from the parsed caps, applying them only to the capsfilter. -- v4: winegstreamer: Only add the capsfilter for avdec_h264. https://gitlab.winehq.org/wine/wine/-/merge_requests/8719