The Boys S04e01 - Openh264 ((new))
ffmpeg -ss 00:10:00 -i "The.Boys.S04E01.mkv" -t 10 -c:v copy -c:a copy sample.mkv Re-encode with OpenH264:
ffmpeg -i input_s04e01.mp4 -c:v libopenh264 -b:v 1M -c:a copy output_s04e01.mp4 To an H.264 stream to raw YUV: the boys s04e01 openh264
encoder->Initialize(¶m); // Feed frame data and encode // ... (see OpenH264 sample for full frame loop) ISVCDecoder* decoder = nullptr; WelsCreateDecoder(&decoder); SDecodingParam decParam = 0; decParam.eEcActiveIdc = ERROR_CON_SLICE_COPY; decParam.sVideoProperty.eVideoBsType = VIDEO_BITSTREAM_AVC; ffmpeg -ss 00:10:00 -i "The
decoder->Initialize(&decParam); // Feed NAL units from The Boys S04E01 decoder->DecodeFrameNoDelay(pData, iLen, pYUV, &dstInfo); | Feature | OpenH264 | x264 | |---------|----------|------| | Encoding speed | Fast, single-thread by default | Highly optimized, multithreaded | | Compression efficiency | Moderate | Excellent | | B-frames | Yes (up to 3) | Yes | | 4:4:4 support | No | Yes | | 10-bit color | No | Yes | | Per-title adaptation | Basic | Advanced (2-pass, CRF) | ✅ Use OpenH264 if patent licensing is a concern or you need a simple BSD-licensed decoder. ❌ Avoid if you need high compression ratios or 10-bit/HDR (S04E01 may have HDR variants). 7. Testing with S04E01 sample To extract a 10-second clip: SDecodingParam decParam = 0


