1. Shantanu Kulkarni UTA ID: 1000789943
H.264 to HEVC Transcoder
Shantanu Kulkarni
UTA ID:

2. Transcoder Basic transcoder : Cascaded Transcoder
Includes complete decoding and re-encoding
High Complexity
Error due to the lossy encoding of already decoded bit sequence
Cascaded Decoder and Encoder
Transcoded HEVC
Bit stream
Input
Bit stream
H.264
Bit stream
Output
Bit stream
H.264 Encoder
H.264 Decoder
HEVC Encoder
HEVC Decoder
Reconstructed
Bit stream
Fig.1 Cascaded Encoder - Decoder

3. Simulation results of H
Simulation results of H.264 encoding, HEVC encoding and Transcoding Video Sequence: akiyo_qcif

4. Simulation results of H
Simulation results of H.264 encoding, HEVC encoding and Transcoding Video Sequence: foreman_qcif

5. Simulation results of H
Simulation results of H.264 encoding, HEVC encoding and Transcoding Video Sequence: mobile_cif

6. PSNR comparison between video sequences
PSNR (db) 
Video
Sequences 
Fig 2. PSNR. Video sequences: akiyo_qcif, foreman_qcif, mobile_cif

7. MSE comparison between video sequences
Fig 3. MSE. Video sequences: akiyo_qcif, foreman_qcif, mobile_cif

8. Bitrate comparison between video sequences
Bitrate ()kbps) 
Bitrate ()kbps) 
Video
Sequences 
Video
Sequences 
Bitrate ()kbps) 
Fig 4. Bitrate Video sequences:
akiyo_qcif, foreman_qcif, mobile_cif
Video
Sequences 

9. Computation Time comparison between video sequences
Fig 5: Computation Time akiyo_qcif,
foreman_qcif and mobile_cif

10. Mobile_cif Fig 6. Mobile_cif H.264 encoded and reconstructed
Fig 7. Mobile_cif Transcoded
Fig 8. HEVC
Encoded and reconstructed

11. Akiyo_qcif and Foreman_qcif
Fig 9. Akiyo_qcif video sequence H.264 encoded, transcoded and HEVC encoded and reconstructed
Fig 10. Foreman_qcif video sequence H.264 encoded, transcoded and HEVC encoded and reconstructed